 
    Exhibit 10.2  ENTRADA THERAPEUTICS, INC.  2021 STOCK OPTION AND INCENTIVE PLAN  SECTION 1.  GENERAL PURPOSE OF THE PLAN; DEFINITIONS  The name of the plan is the Entrada Therapeutics, Inc. 2021 Stock Option and Incentive  Plan (the “Plan”).  The purpose of the Plan is to encourage and enable the officers, employees,  Non-Employee Directors and Consultants of Entrada Therapeutics, Inc. (the “Company”) and its  Affiliates upon whose judgment, initiative and efforts the Company largely depends for the  successful conduct of its business to acquire a proprietary interest in the Company.  It is anticipated  that providing such persons with a direct stake in the Company’s welfare will assure a closer  identification of their interests with those of the Company and its stockholders, thereby stimulating  their efforts on the Company’s behalf and strengthening their desire to remain with the Company.  The following terms shall be defined as set forth below:  “Act” means the Securities Act of 1933, as amended, and the rules and regulations  thereunder.  “Administrator” means either the Board or the compensation committee of the Board or a  similar committee performing the functions of the compensation committee and which is  comprised of not less than two Non-Employee Directors who are independent.  “Affiliate” means, at the time of determination, any “parent” or “subsidiary” of the  Company as such terms are defined in Rule 405 of the Act. The Board will have the authority to  determine the time or times at which “parent” or “subsidiary” status is determined within the  foregoing definition.   “Award” or “Awards,” except where referring to a particular category of grant under the  Plan, shall include Incentive Stock Options, Non-Qualified Stock Options, Stock Appreciation  Rights, Restricted Stock Units, Restricted Stock Awards, Unrestricted Stock Awards, Cash-Based  Awards, and Dividend Equivalent Rights.  “Award Certificate” means a written or electronic document setting forth the terms and  provisions applicable to an Award granted under the Plan.  Each Award Certificate is subject to  the terms and conditions of the Plan.  “Board” means the Board of Directors of the Company.  “Cash-Based Award” means an Award entitling the recipient to receive a cash- denominated payment.  “Cause” means, unless otherwise provided in an employment agreement or other service  agreement between the Company and the grantee, in a severance plan or policy applicable to the  
 
 
 
   2    grantee, or in the Award Certificate, (i) the grantee’s dishonest statements or acts with respect to  the Company or any Affiliate of the Company, or any current or prospective customers, suppliers  vendors or other third parties with which such entity does business; (ii) the grantee’s commission  of (A) a felony or (B) any misdemeanor involving moral turpitude, deceit, dishonesty or fraud;  (iii) the grantee’s failure to perform his assigned duties and responsibilities to the reasonable  satisfaction of the Company which failure continues, in the reasonable judgment of the  Company, after written notice given to the grantee by the Company; (iv) the grantee’s gross  negligence, willful misconduct or insubordination with respect to the Company or any Affiliate  of the Company; or (v) the grantee’s material violation of any provision of any agreement(s)  between the grantee and the Company relating to noncompetition, nonsolicitation, nondisclosure  and/or assignment of inventions.    “Code” means the Internal Revenue Code of 1986, as amended, and any successor Code,  and related rules, regulations and interpretations.  “Consultant” means a consultant or adviser who provides bona fide services to the  Company or an Affiliate as an independent contractor and who qualifies as a consultant or advisor  under Instruction A.1.(a)(1) of Form S-8 under the Act.    “Dividend Equivalent Right” means an Award entitling the grantee to receive credits  based on ordinary cash dividends that would have been paid on the shares of Stock specified in  the Dividend Equivalent Right (or other award to which it relates) if such shares had been issued  to and held by the grantee.  “Effective Date” means the date on which the Plan becomes effective as set forth in  Section 19.  “Exchange Act” means the Securities Exchange Act of 1934, as amended, and the rules  and regulations thereunder.  “Fair Market Value” of the Stock on any given date means the fair market value of the  Stock determined in good faith by the Administrator; provided, however, that if the Stock is listed  on the National Association of Securities Dealers Automated Quotation System (“NASDAQ”),  NASDAQ Global Market, The New York Stock Exchange or another national securities exchange  or traded on any established market, the determination shall be made by reference to market  quotations.  If there are no market quotations for such date, the determination shall be made by  reference to the last date preceding such date for which there are market quotations; provided  further, however, that if the date for which Fair Market Value is determined is the Registration  Date, the Fair Market Value shall be the “Price to the Public” (or equivalent) set forth on the cover  page for the final prospectus relating to the Company’s initial public offering.  “Good Reason” means, unless otherwise provided in an employment agreement or other  service agreement between the Company and the grantee, in a severance plan or policy applicable  to the grantee, or in the Award Certificate, (i) a material diminution in the grantee’s base salary  except for across-the-board salary reductions similarly affecting all or substantially all similarly  situated employees of the Company or (ii) a material change of at least thirty (30) miles of driving  distance in the geographic location of the principal Company location to which the grantee is  
 
 
 
   3    currently assigned by the Company, so long as the grantee provides at least 90 days’ notice to the  Company following the initial occurrence of any such event and the Company fails to cure such  event within 30 days thereafter.  “Incentive Stock Option” means any Stock Option designated and qualified as an  “incentive stock option” as defined in Section 422 of the Code.  “Non-Employee Director” means a member of the Board who is not also an employee of  the Company or any Subsidiary.  “Non-Qualified Stock Option” means any Stock Option that is not an Incentive Stock  Option.  “Option” or “Stock Option” means any option to purchase shares of Stock granted  pursuant to Section 5.  “Registration Date” means the date upon which the registration statement on Form S-1  that is filed by the Company with respect to its initial public offering is declared effective by the  Securities and Exchange Commission.  “Restricted Shares” means the shares of Stock underlying a Restricted Stock Award that  remain subject to a risk of forfeiture or the Company’s right of repurchase.  “Restricted Stock Award” means an Award of Restricted Shares subject to such restrictions  and conditions as the Administrator may determine at the time of grant.  “Restricted Stock Units” means an Award of stock units subject to such restrictions and  conditions as the Administrator may determine at the time of grant.  “Sale Event” shall mean (i) the sale of all or substantially all of the assets of the Company  on a consolidated basis to an unrelated person or entity, (ii) a merger, reorganization or  consolidation pursuant to which the holders of the Company’s outstanding voting power and  outstanding stock immediately prior to such transaction do not own a majority of the outstanding  voting power and outstanding stock or other equity interests of the resulting or successor entity (or  its ultimate parent, if applicable) immediately upon completion of such transaction, (iii) the sale  of all of the Stock of the Company to an unrelated person, entity or group thereof acting in concert,  or (iv) any other transaction in which the owners of the Company’s outstanding voting power  immediately prior to such transaction do not own at least a majority of the outstanding voting  power of the Company or any successor entity immediately upon completion of the transaction  other than as a result of the acquisition of securities directly from the Company.  “Sale Price” means the value as determined by the Administrator of the consideration  payable, or otherwise to be received by stockholders, per share of Stock pursuant to a Sale Event.  “Section 409A” means Section 409A of the Code and the regulations and other guidance  promulgated thereunder.  
 
 
 
   4    “Service Relationship” means any relationship as an employee, director or Consultant of  the Company or any Affiliate (e.g., a Service Relationship shall be deemed to continue without  interruption in the event an individual’s status changes from full-time employee to part-time  employee or Consultant).  “Stock” means the Common Stock, par value $0.0001 per share, of the Company, subject  to adjustments pursuant to Section 3.  “Stock Appreciation Right” means an Award entitling the recipient to receive shares of  Stock (or cash, to the extent explicitly provided for in the applicable Award Certificate) having a  value equal to the excess of the Fair Market Value of the Stock on the date of exercise over the  exercise price of the Stock Appreciation Right multiplied by the number of shares of Stock with  respect to which the Stock Appreciation Right shall have been exercised.  “Subsidiary” means any corporation or other entity (other than the Company) in which the  Company has at least a 50 percent interest, either directly or indirectly.  “Ten Percent Owner” means an employee who owns or is deemed to own (by reason of  the attribution rules of Section 424(d) of the Code) more than 10 percent of the combined voting  power of all classes of stock of the Company or any parent or subsidiary corporation.   “Unrestricted Stock Award” means an Award of shares of Stock free of any restrictions.  SECTION 2.  ADMINISTRATION OF PLAN; ADMINISTRATOR AUTHORITY TO SELECT  GRANTEES AND DETERMINE AWARDS  (a) Administration of Plan.  The Plan shall be administered by the Administrator.  (b) Powers of Administrator.  The Administrator shall have the power and authority to  grant Awards consistent with the terms of the Plan, including the power and authority:  (i) to select the individuals to whom Awards may from time to time be granted;  (ii) to determine the time or times of grant, and the extent, if any, of Incentive  Stock Options, Non-Qualified Stock Options, Stock Appreciation Rights, Restricted Stock  Awards, Restricted Stock Units, Unrestricted Stock Awards, Cash-Based Awards, and Dividend  Equivalent Rights, or any combination of the foregoing, granted to any one or more grantees;  (iii) to determine the number of shares of Stock to be covered by any Award;  (iv) to determine and modify from time to time the terms and conditions,  including restrictions, not inconsistent with the terms of the Plan, of any Award, which terms and  conditions may differ among individual Awards and grantees, and to approve the forms of Award  Certificates;  (v) to accelerate at any time the exercisability or vesting of all or any portion of  any Award;  
 
 
 
   5    (vi) subject to the provisions of Sections 5(c) or 6(d), to extend at any time the  period in which Stock Options may be exercised or Stock Appreciation Rights, respectively; and  (vii) at any time to adopt, alter and repeal such rules, guidelines and practices for  administration of the Plan and for its own acts and proceedings as it shall deem advisable; to  interpret the terms and provisions of the Plan and any Award (including related written  instruments); to make all determinations it deems advisable for the administration of the Plan; to  decide all disputes arising in connection with the Plan; and to otherwise supervise the  administration of the Plan.  All decisions and interpretations of the Administrator shall be binding on all persons,  including the Company and Plan grantees.  (c) Delegation of Authority to Grant Awards.  Subject to applicable law, the  Administrator, in its discretion, may delegate to a committee consisting of one or more officers of  the Company including the Chief Executive Officer of the Company all or part of the  Administrator’s authority and duties with respect to the granting of Awards to individuals who are  (i) not subject to the reporting and other provisions of Section 16 of the Exchange Act and (ii) not  members of the delegated committee.  Any such delegation by the Administrator shall include a  limitation as to the amount of Stock underlying Awards that may be granted during the period of  the delegation and shall contain guidelines as to the determination of the exercise price and the  vesting criteria.  The Administrator may revoke or amend the terms of a delegation at any time but  such action shall not invalidate any prior actions of the Administrator’s delegate or delegates that  were consistent with the terms of the Plan.  (d) Award Certificate.  Awards under the Plan shall be evidenced by Award  Certificates that set forth the terms, conditions and limitations for each Award which may include,  without limitation, the term of an Award and the provisions applicable in the event employment  or service terminates.  (e) Indemnification.  Neither the Board nor the Administrator, nor any member of  either or any delegate thereof, shall be liable for any act, omission, interpretation, construction or  determination made in good faith in connection with the Plan, and the members of the Board and  the Administrator (and any delegate thereof) shall be entitled in all cases to indemnification and  reimbursement by the Company in respect of any claim, loss, damage or expense (including,  without limitation, reasonable attorneys’ fees) arising or resulting therefrom to the fullest extent  permitted by law and/or under the Company’s articles or bylaws or any directors’ and officers’  liability insurance coverage which may be in effect from time to time and/or any indemnification  agreement between such individual and the Company.  (f) Foreign Award Recipients.  Notwithstanding any provision of the Plan to the  contrary, in order to comply with the laws in other countries in which the Company and its  Subsidiaries operate or have employees or other individuals eligible for Awards, the  Administrator, in its sole discretion, shall have the power and authority to:  (i) determine which  Subsidiaries shall be covered by the Plan; (ii) determine which individuals outside the United  States are eligible to participate in the Plan; (iii) modify the terms and conditions of any Award  granted to individuals outside the United States to comply with applicable foreign laws; (iv)  
 
 
 
   6    establish subplans and modify exercise procedures and other terms and procedures, to the extent  the Administrator determines such actions to be necessary or advisable (and such subplans and/or  modifications shall be attached to this Plan as appendices); provided, however, that no such  subplans and/or modifications shall increase the share limitations contained in Section 3(a) hereof;  and (v) take any action, before or after an Award is made, that the Administrator determines to be  necessary or advisable to obtain approval or comply with any local governmental regulatory  exemptions or approvals.  Notwithstanding the foregoing, the Administrator may not take any  actions hereunder, and no Awards shall be granted, that would violate the Exchange Act or any  other applicable United States securities law, the Code, or any other applicable United States  governing statute or law.  SECTION 3.  STOCK ISSUABLE UNDER THE PLAN; MERGERS; SUBSTITUTION  (a) Stock Issuable.  The maximum number of shares of Stock reserved and available  for issuance under the Plan shall be 3,902,672 shares (the “Initial Limit”), subject to adjustment  as provided in this Section 3, plus on January 1, 2022 and each January 1 thereafter, the number  of shares of Stock reserved and available for issuance under the Plan shall be cumulatively  increased by four percent of the number of shares of Stock issued and outstanding on the  immediately preceding December 31 or such lesser amount as determined by the Administrator  (the “Annual Increase”).  Subject to such overall limitation, the maximum aggregate number of  shares of Stock that may be issued in the form of Incentive Stock Options shall not exceed the  Initial Limit cumulatively increased on January 1, 2022 and on each January 1 thereafter by the  lesser of the Annual Increase for such year or 3,902,672 shares of Stock, subject in all cases to  adjustment as provided in this Section 3. For purposes of this limitation, the shares of Stock  underlying any awards under the Plan and under the Company’s 2016 Stock Incentive Plan that  are forfeited, canceled, held back upon exercise of an Option or settlement of an Award to cover  the exercise price or tax withholding, reacquired by the Company prior to vesting, satisfied without  the issuance of Stock or otherwise terminated (other than by exercise) shall be added back to the  shares of Stock available for issuance under the Plan and, to the extent permitted under Section  422 of the Code and the regulations promulgated thereunder, the shares of Stock that may be issued  as Incentive Stock Options. In the event the Company repurchases shares of Stock on the open  market, such shares shall not be added to the shares of Stock available for issuance under the Plan.   Subject to such overall limitations, shares of Stock may be issued up to such maximum number  pursuant to any type or types of Award. The shares available for issuance under the Plan may be  authorized but unissued shares of Stock or shares of Stock reacquired by the Company.  Awards  that may be settled solely in cash shall not be counted against the share reserve.  (b) Changes in Stock.  Subject to Section 3(c) hereof, if, as a result of any  reorganization, recapitalization, reclassification, stock dividend, stock split, reverse stock split or  other similar change in the Company’s capital stock, the outstanding shares of Stock are increased  or decreased or are exchanged for a different number or kind of shares or other securities of the  Company, or additional shares or new or different shares or other securities of the Company or  other non-cash assets are distributed with respect to such shares of Stock or other securities, or, if,  as a result of any merger or consolidation, sale of all or substantially all of the assets of the  Company, the outstanding shares of Stock are converted into or exchanged for securities of the  Company or any successor entity (or a parent or subsidiary thereof), the Administrator shall make  an appropriate or proportionate adjustment in (i) the maximum number of shares reserved for  
 
 
 
   7    issuance under the Plan, including the maximum number of shares that may be issued in the form  of Incentive Stock Options, (ii) the number and kind of shares or other securities subject to any  then outstanding Awards under the Plan, (iii) the repurchase price, if any, per share subject to each  outstanding Restricted Stock Award, and (iv) the exercise price for each share subject to any then  outstanding Stock Options and Stock Appreciation Rights under the Plan, without changing the  aggregate exercise price (i.e., the exercise price multiplied by the number of shares subject to Stock  Options and Stock Appreciation Rights) as to which such Stock Options and Stock Appreciation  Rights remain exercisable.  The Administrator shall also make equitable or proportionate  adjustments in the number of shares subject to outstanding Awards and the exercise price and the  terms of outstanding Awards to take into consideration cash dividends paid other than in the  ordinary course or any other extraordinary corporate event.  The adjustment by the Administrator  shall be final, binding and conclusive.  No fractional shares of Stock shall be issued under the Plan  resulting from any such adjustment, but the Administrator in its discretion may make a cash  payment in lieu of fractional shares.  (c) Mergers and Other Transactions.  In the case of and subject to the consummation  of a Sale Event, the parties thereto may cause the assumption or continuation of Awards theretofore  granted by the successor entity, or the substitution of such Awards with new Awards of the  successor entity or parent thereof, with appropriate adjustment as to the number and kind of shares  and, if appropriate, the per share exercise prices, as such parties shall agree.  To the extent the  parties to such Sale Event do not provide for the assumption, continuation or substitution of  Awards, upon the effective time of the Sale Event, the Plan and all outstanding Awards granted  hereunder shall terminate.  In such case, except as may be otherwise provided in the relevant  Award Certificate, all Options and Stock Appreciation Rights with time-based vesting conditions  or restrictions that are not vested and/or exercisable immediately prior to the effective time of the  Sale Event shall become fully vested and exercisable as of the effective time of the Sale Event, all  other Awards with time-based vesting, conditions or restrictions shall become fully vested and  nonforfeitable as of the effective time of the Sale Event, and all Awards with conditions and  restrictions relating to the attainment of performance goals may become vested and nonforfeitable  in connection with a Sale Event in the Administrator’s discretion or to the extent specified in the  relevant Award Certificate. In the event of such termination, (i) the Company shall have the option  (in its sole discretion) to make or provide for a payment, in cash or in kind, to the grantees holding  Options and Stock Appreciation Rights, in exchange for the cancellation thereof, in an amount  equal to the difference between (A) the Sale Price multiplied by the number of shares of Stock  subject to outstanding Options and Stock Appreciation Rights (to the extent then exercisable at  prices not in excess of the Sale Price) and (B) the aggregate exercise price of all such outstanding  Options and Stock Appreciation Rights (provided that, in the case of an Option or Stock  Appreciation Right with an exercise price equal to or greater than the Sale Price, such Option or  Stock Appreciation Right shall be cancelled for no consideration); or (ii) each grantee shall be  permitted, within a specified period of time prior to the consummation of the Sale Event as  determined by the Administrator, to exercise all outstanding Options and Stock Appreciation  Rights (to the extent then exercisable) held by such grantee.  The Company shall also have the  option (in its sole discretion) to make or provide for a payment, in cash or in kind, to the grantees  holding other Awards in an amount equal to the Sale Price multiplied by the number of vested  shares of Stock under such Awards.  
 
 
 
   8    To the extent that the parties to such Sale Event provide for the assumption, continuation  or substitution of Awards, and in the event a grantee’s Service Relationship is terminated by the  Company or any successor other than for Cause or the grantee resigns for Good Reason, in either  case upon or during the 12-month period following the Sale Event, except as may be otherwise  provided in the relevant Award Certificate, any such Awards so assumed, continued or substituted  in a Sale Event shall become fully vested, exercisable and nonforfeitable as of the date of such  termination.  (d) Maximum Awards to Non-Employee Directors.  Notwithstanding anything to the  contrary in this Plan, the value of all Awards awarded under this Plan and all other cash  compensation paid by the Company to any Non-Employee Director for service as a Non-Employee  Director in any calendar year shall not exceed: (i) $1,200,000 in the first calendar year an  individual becomes a Non-Employee Director and (ii) $750,000 in any other calendar year.  For  the purpose of this limitation, the value of any Award shall be its grant date fair value, as  determined in accordance with ASC 718 or successor provision but excluding the impact of  estimated forfeitures related to service-based vesting provisions.  SECTION 4.  ELIGIBILITY  Grantees under the Plan will be such employees, Non-Employee Directors or Consultants  of the Company and its Affiliates as are selected from time to time by the Administrator in its sole  discretion; provided that Awards may not be granted to employees, Directors or Consultants who  are providing services only to any “parent” of the Company, as such term is defined in Rule 405  of the Act, unless (i) the stock underlying the Awards is treated as “service recipient stock” under  Section 409A or (ii) the Company has determined that such Awards are exempt from or otherwise  comply with Section 409A.    SECTION 5.  STOCK OPTIONS  (a) Award of Stock Options.  The Administrator may grant Stock Options under the  Plan.  Any Stock Option granted under the Plan shall be in such form as the Administrator may  from time to time approve.  Stock Options granted under the Plan may be either Incentive Stock Options or Non- Qualified Stock Options.  Incentive Stock Options may be granted only to employees of the  Company or any Subsidiary that is a “subsidiary corporation” within the meaning of Section 424(f)  of the Code.  To the extent that any Option does not qualify as an Incentive Stock Option, it shall  be deemed a Non-Qualified Stock Option.  Stock Options granted pursuant to this Section 5 shall be subject to the following terms and  conditions and shall contain such additional terms and conditions, not inconsistent with the terms  of the Plan, as the Administrator shall deem desirable.  If the Administrator so determines, Stock  Options may be granted in lieu of cash compensation at the optionee’s election, subject to such  terms and conditions as the Administrator may establish.  (b) Exercise Price.  The exercise price per share for the Stock covered by a Stock  Option granted pursuant to this Section 5 shall be determined by the Administrator at the time of  grant but shall not be less than 100 percent of the Fair Market Value on the date of grant.  In the  
 
 
 
   9    case of an Incentive Stock Option that is granted to a Ten Percent Owner, the exercise price of  such Incentive Stock Option shall be not less than 110 percent of the Fair Market Value on the  grant date.  Notwithstanding the foregoing, Stock Options may be granted with an exercise price  per share that is less than 100 percent of the Fair Market Value on the date of grant (i) pursuant to  a transaction described in, and in a manner consistent with, Section 424(a) of the Code, (ii) to  individuals who are not subject to U.S. income tax on the date of grant or (iii) the Stock Option is  otherwise compliant with Section 409A.  (c) Option Term.  The term of each Stock Option shall be fixed by the Administrator,  but no Stock Option shall be exercisable more than ten years after the date the Stock Option is  granted.  In the case of an Incentive Stock Option that is granted to a Ten Percent Owner, the term  of such Stock Option shall be no more than five years from the date of grant.  (d) Exercisability; Rights of a Stockholder.  Stock Options shall become exercisable at  such time or times, whether or not in installments, as shall be determined by the Administrator at  or after the grant date.  The Administrator may at any time accelerate the exercisability of all or  any portion of any Stock Option.  An optionee shall have the rights of a stockholder only as to  shares acquired upon the exercise of a Stock Option and not as to unexercised Stock Options.  (e) Method of Exercise.  Stock Options may be exercised in whole or in part, by giving  written or electronic notice of exercise to the Company, specifying the number of shares to be  purchased.  Payment of the purchase price may be made by one or more of the following methods  except to the extent otherwise provided in the Award Certificate:  (i) In cash, by certified or bank check or other instrument acceptable to the  Administrator;  (ii) Through the delivery (or attestation to the ownership following such  procedures as the Company may prescribe) of shares of Stock that are not then subject to  restrictions under any Company plan.  Such surrendered shares shall be valued at Fair Market  Value on the exercise date;   (iii) By the optionee delivering to the Company a properly executed exercise  notice together with irrevocable instructions to a broker to promptly deliver to the Company cash  or a check payable and acceptable to the Company for the purchase price; provided that in the  event the optionee chooses to pay the purchase price as so provided, the optionee and the broker  shall comply with such procedures and enter into such agreements of indemnity and other  agreements as the Company shall prescribe as a condition of such payment procedure; or   With respect to Stock Options that are not Incentive Stock Options, by a “net exercise”  arrangement pursuant to which the Company will reduce the number of shares of Stock issuable  upon exercise by the largest whole number of shares with a Fair Market Value that does not  exceed the aggregate exercise price.    (iv)   Payment instruments will be received subject to collection.  The transfer  to the optionee on the records of the Company or of the transfer agent of the shares of Stock to be  purchased pursuant to the exercise of a Stock Option will be contingent upon receipt from the  
 
 
 
   10    optionee (or a purchaser acting in his stead in accordance with the provisions of the Stock Option)  by the Company of the full purchase price for such shares and the fulfillment of any other  requirements contained in the Award Certificate or applicable provisions of laws (including the  satisfaction of any withholding taxes that the Company is obligated to withhold with respect to the  optionee).  In the event an optionee chooses to pay the purchase price by previously-owned shares  of Stock through the attestation method, the number of shares of Stock transferred to the optionee  upon the exercise of the Stock Option shall be net of the number of attested shares.  In the event  that the Company establishes, for itself or using the services of a third party, an automated system  for the exercise of Stock Options, such as a system using an internet website or interactive voice  response, then the paperless exercise of Stock Options may be permitted through the use of such  an automated system.  (f) Annual Limit on Incentive Stock Options.  To the extent required for “incentive  stock option” treatment under Section 422 of the Code, the aggregate Fair Market Value  (determined as of the time of grant) of the shares of Stock with respect to which Incentive Stock  Options granted under this Plan and any other plan of the Company or its parent and subsidiary  corporations become exercisable for the first time by an optionee during any calendar year shall  not exceed $100,000.  To the extent that any Stock Option exceeds this limit, it shall constitute a  Non-Qualified Stock Option.  SECTION 6.  STOCK APPRECIATION RIGHTS  (a) Award of Stock Appreciation Rights.  The Administrator may grant Stock  Appreciation Rights under the Plan.  A Stock Appreciation Right is an Award entitling the recipient  to receive shares of Stock (or cash, to the extent explicitly provided for in the applicable Award  Certificate) having a value equal to the excess of the Fair Market Value of a share of Stock on the  date of exercise over the exercise price of the Stock Appreciation Right multiplied by the number  of shares of Stock with respect to which the Stock Appreciation Right shall have been exercised.  (b) Exercise Price of Stock Appreciation Rights.  The exercise price of a Stock  Appreciation Right shall not be less than 100 percent of the Fair Market Value of the Stock on the  date of grant.  Notwithstanding the foregoing, Stock Appreciation Rights may be granted with an  exercise price per share that is less than 100 percent of the Fair Market Value on the date of grant  (i) pursuant to a transaction described in, and in a manner consistent with, Section 424(a) of the  Code, (ii) to individuals who are not subject to U.S. income tax on the date of grant or (iii) the  Stock Appreciation Right is otherwise compliant with Section 409A.  (c) Grant and Exercise of Stock Appreciation Rights.  Stock Appreciation Rights may  be granted by the Administrator independently of any Stock Option granted pursuant to Section 5  of the Plan.  (d) Terms and Conditions of Stock Appreciation Rights.  Stock Appreciation Rights  shall be subject to such terms and conditions as shall be determined on the date of grant by the  Administrator.  The term of a Stock Appreciation Right may not exceed ten years.  The terms and  conditions of each such Award shall be determined by the Administrator, and such terms and  conditions may differ among individual Awards and grantees.  
 
 
 
   11    SECTION 7.  RESTRICTED STOCK AWARDS  (a) Nature of Restricted Stock Awards.  The Administrator may grant Restricted Stock  Awards under the Plan.  A Restricted Stock Award is any Award of Restricted Shares subject to  such restrictions and conditions as the Administrator may determine at the time of grant.   Conditions may be based on continuing employment (or other Service Relationship) and/or  achievement of pre-established performance goals and objectives.  (b) Rights as a Stockholder.  Upon the grant of the Restricted Stock Award and  payment of any applicable purchase price, a grantee shall have the rights of a stockholder with  respect to the voting of the Restricted Shares and receipt of dividends; provided that if the lapse of  restrictions with respect to the Restricted Stock Award is tied to the attainment of performance  goals, any dividends paid by the Company during the performance period shall accrue and shall  not be paid to the grantee until and to the extent the performance goals are met with respect to the  Restricted Stock Award.  Unless the Administrator shall otherwise determine, (i) uncertificated  Restricted Shares shall be accompanied by a notation on the records of the Company or the transfer  agent to the effect that they are subject to forfeiture until such Restricted Shares are vested as  provided in Section 7(d) below, and (ii) certificated Restricted Shares shall remain in the  possession of the Company until such Restricted Shares are vested as provided in Section 7(d)  below, and the grantee shall be required, as a condition of the grant, to deliver to the Company  such instruments of transfer as the Administrator may prescribe.  (c) Restrictions.  Restricted Shares may not be sold, assigned, transferred, pledged or  otherwise encumbered or disposed of except as specifically provided herein or in the Restricted  Stock Award Certificate.  Except as may otherwise be provided by the Administrator either in the  Award Certificate or, subject to Section 16 below, in writing after the Award is issued, if a  grantee’s employment (or other Service Relationship) with the Company and its Subsidiaries  terminates for any reason, any Restricted Shares that have not vested at the time of termination  shall automatically and without any requirement of notice to such grantee from or other action by  or on behalf of, the Company be deemed to have been reacquired by the Company at its original  purchase price (if any) from such grantee or such grantee’s legal representative simultaneously  with such termination of employment (or other Service Relationship), and thereafter shall cease to  represent any ownership of the Company by the grantee or rights of the grantee as a stockholder.   Following such deemed reacquisition of Restricted Shares that are represented by physical  certificates, a grantee shall surrender such certificates to the Company upon request without  consideration.  (d) Vesting of Restricted Shares.  The Administrator at the time of grant shall specify  the date or dates and/or the attainment of pre-established performance goals, objectives and other  conditions on which the non-transferability of the Restricted Shares and the Company’s right of  repurchase or forfeiture shall lapse.  Subsequent to such date or dates and/or the attainment of such  pre-established performance goals, objectives and other conditions, the shares on which all  restrictions have lapsed shall no longer be Restricted Shares and shall be deemed “vested.”  
 
 
 
   12    SECTION 8.  RESTRICTED STOCK UNITS  (a) Nature of Restricted Stock Units.  The Administrator may grant Restricted Stock  Units under the Plan.  A Restricted Stock Unit is an Award of stock units that may be settled in  shares of Stock (or cash, to the extent explicitly provided for in the Award Certificate) upon the  satisfaction of such restrictions and conditions at the time of grant.  Conditions may be based on  continuing employment (or other Service Relationship) and/or achievement of pre-established  performance goals and objectives.  The terms and conditions of each such Award shall be  determined by the Administrator, and such terms and conditions may differ among individual  Awards and grantees.  Except in the case of Restricted Stock Units with a deferred settlement date  that complies with Section 409A, at the end of the vesting period, the Restricted Stock Units, to  the extent vested, shall be settled in the form of shares of Stock.  Restricted Stock Units with  deferred settlement dates are subject to Section 409A and shall contain such additional terms and  conditions as the Administrator shall determine in its sole discretion in order to comply with the  requirements of Section 409A.  (b) Election to Receive Restricted Stock Units in Lieu of Compensation.  The  Administrator may, in its sole discretion, permit a grantee to elect to receive a portion of future  cash compensation otherwise due to such grantee in the form of an award of Restricted Stock  Units.  Any such election shall be made in writing and shall be delivered to the Company no later  than the date specified by the Administrator and in accordance with Section 409A and such other  rules and procedures established by the Administrator.  Any such future cash compensation that  the grantee elects to defer shall be converted to a fixed number of Restricted Stock Units based on  the Fair Market Value of Stock on the date the compensation would otherwise have been paid to  the grantee if such payment had not been deferred as provided herein.  The Administrator shall  have the sole right to determine whether and under what circumstances to permit such elections  and to impose such limitations and other terms and conditions thereon as the Administrator deems  appropriate.  Any Restricted Stock Units that are elected to be received in lieu of cash  compensation shall be fully vested, unless otherwise provided in the Award Certificate.  (c) Rights as a Stockholder.  A grantee shall have the rights as a stockholder only as to  shares of Stock acquired by the grantee upon settlement of Restricted Stock Units; provided,  however, that the grantee may be credited with Dividend Equivalent Rights with respect to the  stock units underlying his Restricted Stock Units, subject to the provisions of Section 11 and such  terms and conditions as the Administrator may determine.    (d) Termination.  Except as may otherwise be provided by the Administrator either in  the Award Certificate or, subject to Section 16 below, in writing after the Award is issued, a  grantee’s right in all Restricted Stock Units that have not vested shall automatically terminate upon  the grantee’s termination of employment (or cessation of Service Relationship) with the Company  and its Subsidiaries for any reason.  SECTION 9.  UNRESTRICTED STOCK AWARDS  Grant or Sale of Unrestricted Stock.  The Administrator may grant (or sell at par value or  such higher purchase price determined by the Administrator) an Unrestricted Stock Award under  the Plan.  An Unrestricted Stock Award is an Award pursuant to which the grantee may receive  
 
 
 
   13    shares of Stock free of any restrictions under the Plan.  Unrestricted Stock Awards may be granted  in respect of past services or other valid consideration, or in lieu of cash compensation due to such  grantee.  SECTION 10.  CASH-BASED AWARDS  Grant of Cash-Based Awards.  The Administrator may grant Cash-Based Awards under  the Plan.  A Cash-Based Award is an Award that entitles the grantee to a payment in cash upon  the attainment of specified performance goals.  The Administrator shall determine the maximum  duration of the Cash-Based Award, the amount of cash to which the Cash-Based Award pertains,  the conditions upon which the Cash-Based Award shall become vested or payable, and such other  provisions as the Administrator shall determine.  Each Cash-Based Award shall specify a cash- denominated payment amount, formula or payment ranges as determined by the Administrator.   Payment, if any, with respect to a Cash-Based Award shall be made in accordance with the terms  of the Award and may be made in cash.    SECTION 11.  DIVIDEND EQUIVALENT RIGHTS  (a) Dividend Equivalent Rights.  The Administrator may grant Dividend Equivalent  Rights under the Plan.  A Dividend Equivalent Right is an Award entitling the grantee to receive  credits based on cash dividends that would have been paid on the shares of Stock specified in the  Dividend Equivalent Right (or other Award to which it relates) if such shares had been issued to  the grantee.  A Dividend Equivalent Right may be granted hereunder to any grantee as a component  of an award of Restricted Stock Units or as a freestanding award.  The terms and conditions of  Dividend Equivalent Rights shall be specified in the Award Certificate.  Dividend equivalents  credited to the holder of a Dividend Equivalent Right may be paid currently or may be deemed to  be reinvested in additional shares of Stock, which may thereafter accrue additional equivalents.   Any such reinvestment shall be at Fair Market Value on the date of reinvestment or such other  price as may then apply under a dividend reinvestment plan sponsored by the Company, if any.   Dividend Equivalent Rights may be settled in cash or shares of Stock or a combination thereof, in  a single installment or installments.  A Dividend Equivalent Right granted as a component of an  Award of Restricted Stock Units shall provide that such Dividend Equivalent Right shall be settled  only upon settlement or payment of, or lapse of restrictions on, such other Award, and that such  Dividend Equivalent Right shall expire or be forfeited or annulled under the same conditions as  such other Award.  (b) Termination.  Except as may otherwise be provided by the Administrator either in  the Award Certificate or, subject to Section 16 below, in writing after the Award is issued, a  grantee’s rights in all Dividend Equivalent Rights shall automatically terminate upon the grantee’s  termination of employment (or cessation of Service Relationship) with the Company and its  Subsidiaries for any reason.  SECTION 12.  TRANSFERABILITY OF AWARDS  (a) Transferability.  Except as provided in Section 12(b) below, during a grantee’s  lifetime, his or her Awards shall be exercisable only by the grantee, or by the grantee’s legal  representative or guardian in the event of the grantee’s incapacity.  No Awards shall be sold,  
 
 
 
   14    assigned, transferred or otherwise encumbered or disposed of by a grantee other than by will or by  the laws of descent and distribution or pursuant to a domestic relations order.  No Awards shall be  subject, in whole or in part, to attachment, execution, or levy of any kind, and any purported  transfer in violation hereof shall be null and void.  (b) Administrator Action.  Notwithstanding Section 12(a), the Administrator, in its  discretion, may provide either in the Award Certificate regarding a given Award or by subsequent  written approval that the grantee (who is an employee or director) may transfer his or her Non- Qualified Stock Options to his or her immediate family members, to trusts for the benefit of such  family members, or to partnerships in which such family members are the only partners, provided  that the transferee agrees in writing with the Company to be bound by all of the terms and  conditions of this Plan and the applicable Award.  In no event may an Award be transferred by a  grantee for value.  (c) Family Member.  For purposes of Section 12(b), “family member” shall mean a  grantee’s child, stepchild, grandchild, parent, stepparent, grandparent, spouse, former spouse,  sibling, niece, nephew, mother-in-law, father-in-law, son-in-law, daughter-in-law, brother-in-law,  or sister-in-law, including adoptive relationships, any person sharing the grantee’s household  (other than a tenant of the grantee), a trust in which these persons (or the grantee) have more than  50 percent of the beneficial interest, a foundation in which these persons (or the grantee) control  the management of assets, and any other entity in which these persons (or the grantee) own more  than 50 percent of the voting interests.  (d) Designation of Beneficiary.  To the extent permitted by the Company, each grantee  to whom an Award has been made under the Plan may designate a beneficiary or beneficiaries to  exercise any Award or receive any payment under any Award payable on or after the grantee’s  death.  Any such designation shall be on a form provided for that purpose by the Administrator  and shall not be effective until received by the Administrator.  If no beneficiary has been  designated by a deceased grantee, or if the designated beneficiaries have predeceased the grantee,  the beneficiary shall be the grantee’s estate.  SECTION 13.  TAX WITHHOLDING  (a) Payment by Grantee.  Each grantee shall, no later than the date as of which the  value of an Award or of any Stock or other amounts received thereunder first becomes includable  in the gross income of the grantee for Federal income tax purposes, pay to the Company, or make  arrangements satisfactory to the Administrator regarding payment of, any Federal, state, or local  taxes of any kind required by law to be withheld by the Company with respect to such income.   The Company and its Subsidiaries shall, to the extent permitted by law, have the right to deduct  any such taxes from any payment of any kind otherwise due to the grantee.  The Company’s  obligation to deliver evidence of book entry (or stock certificates) to any grantee is subject to and  conditioned on tax withholding obligations being satisfied by the grantee.  (b) Payment in Stock.  The Administrator may require the Company’s tax withholding  obligation to be satisfied, in whole or in part, by the Company withholding from shares of Stock  to be issued pursuant to any Award a number of shares with an aggregate Fair Market Value (as  of the date the withholding is effected) that would satisfy the withholding amount due; provided,  
 
 
 
   15    however, that the amount withheld does not exceed the maximum statutory tax rate or such lesser  amount as is necessary to avoid liability accounting treatment.  For purposes of share withholding,  the Fair Market Value of withheld shares shall be determined in the same manner as the value of  Stock includible in income of the grantees.  The Administrator may also require the Company’s  tax withholding obligation to be satisfied, in whole or in part, by an arrangement whereby a certain  number of shares of Stock issued pursuant to any Award are immediately sold and proceeds from  such sale are remitted to the Company in an amount that would satisfy the withholding amount  due.  SECTION 14.  SECTION 409A AWARDS  Awards are intended to be exempt from Section 409A to the greatest extent possible and  to otherwise comply with Section 409A.  The Plan and all Awards shall be interpreted in  accordance with such intent.  To the extent that any Award is determined to constitute  “nonqualified deferred compensation” within the meaning of Section 409A (a “409A Award”), the  Award shall be subject to such additional rules and requirements as specified by the Administrator  from time to time in order to comply with Section 409A.  In this regard, if any amount under a  409A Award is payable upon a “separation from service” (within the meaning of Section 409A)  to a grantee who is then considered a “specified employee” (within the meaning of Section 409A),  then no such payment shall be made prior to the date that is the earlier of (i) six months and one  day after the grantee’s separation from service, or (ii) the grantee’s death, but only to the extent  such delay is necessary to prevent such payment from being subject to interest, penalties and/or  additional tax imposed pursuant to Section 409A.  Further, the settlement of any 409A Award may  not be accelerated except to the extent permitted by Section 409A.  The Company makes no  representation that any or all of the payments or benefits described in the Plan will be exempt from  or comply with Section 409A of the Code and makes no undertaking to preclude Section 409A of  the Code from applying to any such payment.  The grantee shall be solely responsible for the  payment of any taxes and penalties incurred under Section 409A.  SECTION 15.  TERMINATION OF SERVICE RELATIONSHIP, TRANSFER, LEAVE OF  ABSENCE, ETC.  (a) Termination of Service Relationship.  If the grantee’s Service Relationship is with  an Affiliate and such Affiliate  ceases to be an Affiliate, the grantee shall be deemed to have  terminated his or her Service Relationship for purposes of the Plan.    (b) For purposes of the Plan, the following events shall not be deemed a termination of  a Service Relationship:  (i) a transfer to the employment of the Company from an Affiliate or from the  Company to an Affiliate, or from one Affiliate to another; or  (ii) an approved leave of absence for military service or sickness, or for any  other purpose approved by the Company, if the employee’s right to re-employment is guaranteed  either by a statute or by contract or under the policy pursuant to which the leave of absence was  granted or if the Administrator otherwise so provides in writing.  
 
 
 
   16    SECTION 16.  AMENDMENTS AND TERMINATION  The Board may, at any time, amend or discontinue the Plan and the Administrator may, at  any time, amend or cancel any outstanding Award for the purpose of satisfying changes in law or  for any other lawful purpose, but no such action shall materially and adversely affect rights under  any outstanding Award without the holder’s consent.  The Administrator is specifically authorized  to exercise its discretion to reduce the exercise price of outstanding Stock Options or Stock  Appreciation Rights or effect the repricing of such Awards through cancellation and re-grants or  cancellation of Stock Options or Stock Appreciation Rights in exchange for cash or other Awards.   To the extent required under the rules of any securities exchange or market system on which the  Stock is listed, to the extent determined by the Administrator to be required by the Code to ensure  that Incentive Stock Options granted under the Plan are qualified under Section 422 of the Code,  Plan amendments shall be subject to approval by Company stockholders.  Nothing in this  Section 16 shall limit the Administrator’s authority to take any action permitted pursuant to  Section 3(b) or 3(c).  SECTION 17.  STATUS OF PLAN  With respect to the portion of any Award that has not been exercised and any payments in  cash, Stock or other consideration not received by a grantee, a grantee shall have no rights greater  than those of a general creditor of the Company unless the Administrator shall otherwise expressly  determine in connection with any Award or Awards.  In its sole discretion, the Administrator may  authorize the creation of trusts or other arrangements to meet the Company’s obligations to deliver  Stock or make payments with respect to Awards hereunder, provided that the existence of such  trusts or other arrangements is consistent with the foregoing sentence.  SECTION 18.  GENERAL PROVISIONS  (a) No Distribution.  The Administrator may require each person acquiring Stock  pursuant to an Award to represent to and agree with the Company in writing that such person is  acquiring the shares without a view to distribution thereof.  (b) Issuance of Stock.  To the extent certificated, stock certificates to grantees under  this Plan shall be deemed delivered for all purposes when the Company or a stock transfer agent  of the Company shall have mailed such certificates in the United States mail, addressed to the  grantee, at the grantee’s last known address on file with the Company.  Uncertificated Stock shall  be deemed delivered for all purposes when the Company or a Stock transfer agent of the Company  shall have given to the grantee by electronic mail (with proof of receipt) or by United States mail,  addressed to the grantee, at the grantee’s last known address on file with the Company, notice of  issuance and recorded the issuance in its records (which may include electronic “book entry”  records).  Notwithstanding anything herein to the contrary, the Company shall not be required to  issue or deliver any evidence of book entry or certificates evidencing shares of Stock pursuant to  the exercise or settlement of any Award, unless and until the Administrator has determined, with  advice of counsel (to the extent the Administrator deems such advice necessary or advisable), that  the issuance and delivery is in compliance with all applicable laws, regulations of governmental  authorities and, if applicable, the requirements of any exchange on which the shares of Stock are  listed, quoted or traded.  Any Stock issued pursuant to the Plan shall be subject to any stop-transfer  
 
 
 
   17    orders and other restrictions as the Administrator deems necessary or advisable to comply with  federal, state or foreign jurisdiction, securities or other laws, rules and quotation system on which  the Stock is listed, quoted or traded.  The Administrator may place legends on any Stock certificate  or notations on any book entry to reference restrictions applicable to the Stock.  In addition to the  terms and conditions provided herein, the Administrator may require that an individual make such  reasonable covenants, agreements, and representations as the Administrator, in its discretion,  deems necessary or advisable in order to comply with any such laws, regulations, or requirements.   The Administrator shall have the right to require any individual to comply with any timing or other  restrictions with respect to the settlement or exercise of any Award, including a window-period  limitation, as may be imposed in the discretion of the Administrator.    (c) Stockholder Rights.  Until Stock is deemed delivered in accordance with Section  18(b), no right to vote or receive dividends or any other rights of a stockholder will exist with  respect to shares of Stock to be issued in connection with an Award, notwithstanding the exercise  of a Stock Option or any other action by the grantee with respect to an Award.  (d) Other Compensation Arrangements; No Employment Rights.  Nothing contained  in this Plan shall prevent the Board from adopting other or additional compensation arrangements,  including trusts, and such arrangements may be either generally applicable or applicable only in  specific cases.  The adoption of this Plan and the grant of Awards do not confer upon any employee  any right to continued employment with the Company or any Subsidiary.  (e) Trading Policy Restrictions.  Option exercises and other Awards under the Plan  shall be subject to the Company’s insider trading policies and procedures, as in effect from time  to time.  (f) Clawback Policy.  Awards under the Plan shall be subject to the Company’s  clawback policy, as in effect from time to time.  SECTION 19.  EFFECTIVE DATE OF PLAN  This Plan shall become effective upon the date immediately preceding the Registration  Date subject to prior stockholder approval in accordance with applicable state law, the Company’s  bylaws and articles of incorporation, and applicable stock exchange rules.  No grants of Stock  Options and other Awards may be made hereunder after the tenth anniversary of the Effective Date  and no grants of Incentive Stock Options may be made hereunder after the tenth anniversary of the  date the Plan is approved by the Board.  SECTION 20.  GOVERNING LAW  This Plan and all Awards and actions taken thereunder shall be governed by, and construed  in accordance with, the General Corporation Law of the State of Delaware as to matters within the  
 
 
 
   18    scope thereof, and as to all other matters shall be governed by and construed in accordance with  the internal laws of the State of Delaware applied without regard to conflict of law principles.  DATE APPROVED BY BOARD OF DIRECTORS: September 30, 2021  DATE APPROVED BY STOCKHOLDERS: October 22, 2021  
 
 
 
  RESTRICTED STOCK AWARD AGREEMENT  UNDER THE ENTRADA THERAPEUTICS, INC.  2021 STOCK OPTION AND INCENTIVE PLAN  Name of Grantee:    No. of Shares:    Grant Date:    Pursuant to the Entrada Therapeutics, Inc. 2021 Stock Option and Incentive Plan (the  “Plan”) as amended through the date hereof, Entrada Therapeutics, Inc. (the “Company”) hereby  grants a Restricted Stock Award (an “Award”) to the Grantee named above.  Upon acceptance of  this Award, the Grantee shall receive the number of shares of Common Stock, par value $0.0001  per share (the “Stock”) of the Company specified above, subject to the restrictions and  conditions set forth herein and in the Plan.  The Company acknowledges the receipt from the  Grantee of consideration with respect to the par value of the Stock in the form of cash, past or  future services rendered to the Company by the Grantee or such other form of consideration as is  acceptable to the Administrator.  1. Award.  The shares of Restricted Stock awarded hereunder shall be issued and  held by the Company’s transfer agent in book entry form, and the Grantee’s name shall be  entered as the stockholder of record on the books of the Company.  Thereupon, the Grantee shall  have all the rights of a stockholder with respect to such shares, including voting and dividend  rights, subject, however, to the restrictions and conditions specified in Paragraph 2 below.  The  Grantee shall (i) sign and deliver to the Company a copy of this Award Agreement and (ii)  deliver to the Company a stock power endorsed in blank.  2. Restrictions and Conditions.  (a) Any book entries for the shares of Restricted Stock granted herein shall  bear an appropriate legend, as determined by the Administrator in its sole discretion, to the effect  that such shares are subject to restrictions as set forth herein and in the Plan.  (b) Shares of Restricted Stock granted herein may not be sold, assigned,  transferred, pledged or otherwise encumbered or disposed of by the Grantee prior to vesting.  (c) If the Grantee’s Service Relationship is voluntarily or involuntarily  terminated for any reason (including death) prior to vesting of shares of Restricted Stock granted  herein, then, unless otherwise determined by the Administrator, all shares of Restricted Stock  shall immediately and automatically be forfeited and returned to the Company.   3. Vesting of Restricted Stock.  The restrictions and conditions in Paragraph 2 of this  Agreement shall lapse on the Vesting Date or Dates specified in the following schedule so long  as the Grantee remains in a Service Relationship on such Dates.  If a series of Vesting Dates is  
 
 
 
 2    specified, then the restrictions and conditions in Paragraph 2 shall lapse only with respect to the  number of shares of Restricted Stock specified as vested on such date.  Incremental Number  of Shares Vested Vesting Date  _____________ (___%) ____________  _____________ (___%) ____________  _____________ (___%) ____________  _____________ (___%) ____________  _____________ (___%) ____________  Subsequent to such Vesting Date or Dates, the shares of Stock on which all restrictions  and conditions have lapsed shall no longer be deemed Restricted Stock.  The Administrator may  at any time accelerate the vesting schedule specified in this Paragraph 3.  4. Dividends.  Dividends on shares of Restricted Stock shall be paid currently to the  Grantee.  5. Incorporation of Plan.  Notwithstanding anything herein to the contrary, this  Award shall be subject to and governed by all the terms and conditions of the Plan, including the  powers of the Administrator set forth in Section 2(b) of the Plan.  Capitalized terms in this  Agreement shall have the meaning specified in the Plan, unless a different meaning is specified  herein.  6. Transferability.  This Agreement is personal to the Grantee, is non-assignable and  is not transferable in any manner, by operation of law or otherwise, other than by will or the laws  of descent and distribution.  7. Tax Withholding.  The Grantee shall, not later than the date as of which the  receipt of this Award becomes a taxable event for Federal income tax purposes, pay to the  Company or make arrangements satisfactory to the Administrator for payment of any Federal,  state, and local taxes required by law to be withheld on account of such taxable event.  Except in  the case where an election is made pursuant to Paragraph 8 below, the Company shall have the  authority to cause the required tax withholding obligation to be satisfied, in whole or in part, by  withholding from shares of Stock to be issued or released by the transfer agent a number of  shares of Stock with an aggregate Fair Market Value that would satisfy the withholding amount  due.  8. Election Under Section 83(b).  The Grantee and the Company hereby agree that  the Grantee may, within 30 days following the Grant Date of this Award, file with the Internal  Revenue Service and the Company an election under Section 83(b) of the Internal Revenue  Code.  In the event the Grantee makes such an election, he or she agrees to provide a copy of the  election to the Company.  The Grantee acknowledges that he or she is responsible for obtaining  the advice of his or her tax advisors with regard to the Section 83(b) election and that he or she is  relying solely on such advisors and not on any statements or representations of the Company or  any of its agents with regard to such election.  
 
 
 
 3    9. No Obligation to Continue Service Relationship.  Neither the Company nor any  Subsidiary is obligated by or as a result of the Plan or this Agreement to continue the Grantee’s  Service Relationship and neither the Plan nor this Agreement shall interfere in any way with the  right of the Company or any Subsidiary to terminate the Service Relationship of the Grantee at  any time.  10. Integration.  This Agreement constitutes the entire agreement between the parties  with respect to this Award and supersedes all prior agreements and discussions between the  parties concerning such subject matter.  11. Data Privacy Consent.  In order to administer the Plan and this Agreement and to  implement or structure future equity grants, the Company, its subsidiaries and affiliates and  certain agents thereof (together, the “Relevant Companies”) may process any and all personal or  professional data, including but not limited to Social Security or other identification number,  home address and telephone number, date of birth and other information that is necessary or  desirable for the administration of the Plan and/or this Agreement (the “Relevant Information”).   By entering into this Agreement, the Grantee (i) authorizes the Company to collect, process,  register and transfer to the Relevant Companies all Relevant Information; (ii) waives any privacy  rights the Grantee may have with respect to the Relevant Information; (iii) authorizes the  Relevant Companies to store and transmit such information in electronic form; and (iv)  authorizes the transfer of the Relevant Information to any jurisdiction in which the Relevant  Companies consider appropriate.  The Grantee shall have access to, and the right to change, the  Relevant Information.  Relevant Information will only be used in accordance with applicable  law.  
 
 
 
 4    12. Notices.  Notices hereunder shall be mailed or delivered to the Company at its  principal place of business and shall be mailed or delivered to the Grantee at the address on file  with the Company or, in either case, at such other address as one party may subsequently furnish  to the other party in writing.  ENTRADA THERAPEUTICS, INC.  By:     Title:  The foregoing Agreement is hereby accepted and the terms and conditions thereof hereby agreed  to by the undersigned.  Electronic acceptance of this Agreement pursuant to the Company’s  instructions to the Grantee (including through an online acceptance process) is acceptable.  Dated:      Grantee’s Signature    Grantee’s name and address:           
 
 
 
  RESTRICTED STOCK UNIT AWARD AGREEMENT  FOR NON-EMPLOYEE DIRECTORS  UNDER THE ENTRADA THERAPEUTICS, INC.  2021 STOCK OPTION AND INCENTIVE PLAN  Name of Grantee:    No. of Restricted Stock Units:    Grant Date:    Pursuant to the Entrada Therapeutics, Inc. 2021 Stock Option and Incentive Plan as  amended through the date hereof (the “Plan”), Entrada Therapeutics, Inc. (the “Company”)  hereby grants an award of the number of Restricted Stock Units listed above (an “Award”) to the  Grantee named above.  Each Restricted Stock Unit shall relate to one share of Common Stock,  par value $0.0001 per share (the “Stock”) of the Company.  1. Restrictions on Transfer of Award.  This Award may not be sold, transferred,  pledged, assigned or otherwise encumbered or disposed of by the Grantee, and any shares of  Stock issuable with respect to the Award may not be sold, transferred, pledged, assigned or  otherwise encumbered or disposed of until (i) the Restricted Stock Units have vested as provided  in Paragraph 2 of this Agreement and (ii) shares of Stock have been issued to the Grantee in  accordance with the terms of the Plan and this Agreement.  2. Vesting of Restricted Stock Units.  The restrictions and conditions of Paragraph 1  of this Agreement shall lapse on the Vesting Date or Dates specified in the following schedule so  long as the Grantee remains in a Service Relationship on such Dates.  If a series of Vesting Dates  is specified, then the restrictions and conditions in Paragraph 1 shall lapse only with respect to  the number of Restricted Stock Units specified as vested on such date.  Incremental Number of  Restricted Stock Units Vested Vesting Date  _____________ (___%) _______________  _____________ (___%) _______________  _____________ (___%) _______________  _____________ (___%) _______________  The Administrator may at any time accelerate the vesting schedule specified in this  Paragraph 2.  3. Termination of Service Relationship.  If the Grantee’s Service Relationship  terminates for any reason (including death or disability) prior to the satisfaction of the vesting  conditions set forth in Paragraph 2 above, then, unless otherwise determined by the  Administrator, any Restricted Stock Units that have not vested as of such date shall  automatically and without notice terminate and be forfeited, and neither the Grantee nor any of  
 
 
 
   2    his or her successors, heirs, assigns, or personal representatives will thereafter have any further  rights or interests in such unvested Restricted Stock Units.  4. Issuance of Shares of Stock.  As soon as practicable following each Vesting Date  (but in no event later than two and one-half months after the end of the year in which the Vesting  Date occurs), the Company shall issue to the Grantee the number of shares of Stock equal to the  aggregate number of Restricted Stock Units that have vested pursuant to Paragraph 2 of this  Agreement on such date and the Grantee shall thereafter have all the rights of a stockholder of  the Company with respect to such shares.  5. Incorporation of Plan.  Notwithstanding anything herein to the contrary, this  Agreement shall be subject to and governed by all the terms and conditions of the Plan, including  the powers of the Administrator set forth in Section 2(b) of the Plan.  Capitalized terms in this  Agreement shall have the meaning specified in the Plan, unless a different meaning is specified  herein.  6. Section 409A of the Code.  This Agreement shall be interpreted in such a manner  that all provisions relating to the settlement of the Award are exempt from the requirements of  Section 409A of the Code as “short-term deferrals” as described in Section 409A of the Code.  7. No Obligation to Continue in Service.  Neither the Plan nor this Award confers  upon the Grantee any rights with respect to continuance as a Director or in any other Service  Relationship.  8. Integration.  This Agreement constitutes the entire agreement between the parties  with respect to this Award and supersedes all prior agreements and discussions between the  parties concerning such subject matter.  9. Data Privacy Consent.  In order to administer the Plan and this Agreement and to  implement or structure future equity grants, the Company, its subsidiaries and affiliates and  certain agents thereof (together, the “Relevant Companies”) may process any and all personal or  professional data, including but not limited to Social Security or other identification number,  home address and telephone number, date of birth and other information that is necessary or  desirable for the administration of the Plan and/or this Agreement (the “Relevant Information”).   By entering into this Agreement, the Grantee (i) authorizes the Company to collect, process,  register and transfer to the Relevant Companies all Relevant Information; (ii) waives any privacy  rights the Grantee may have with respect to the Relevant Information; (iii) authorizes the  Relevant Companies to store and transmit such information in electronic form; and (iv)  authorizes the transfer of the Relevant Information to any jurisdiction in which the Relevant  Companies consider appropriate.  The Grantee shall have access to, and the right to change, the  Relevant Information.  Relevant Information will only be used in accordance with applicable  law.  
 
 
 
   3    10. Notices.  Notices hereunder shall be mailed or delivered to the Company at its  principal place of business and shall be mailed or delivered to the Grantee at the address on file  with the Company or, in either case, at such other address as one party may subsequently furnish  to the other party in writing.  ENTRADA THERAPEUTICS, INC.   By:     Title:  The foregoing Agreement is hereby accepted and the terms and conditions thereof hereby agreed  to by the undersigned.  Electronic acceptance of this Agreement pursuant to the Company’s  instructions to the Grantee (including through an online acceptance process) is acceptable.  Dated:      Grantee’s Signature    Grantee’s name and address:           
 
 
 
RESTRICTED STOCK UNIT AWARD AGREEMENT  FOR COMPANY EMPLOYEES AND CONSULTANTS  UNDER THE ENTRADA THERAPEUTICS, INC.  2021 STOCK OPTION AND INCENTIVE PLAN  Name of Grantee:    No. of Restricted Stock Units:    Grant Date:    Pursuant to the Entrada Therapeutics, Inc. 2021 Stock Option and Incentive Plan as  amended through the date hereof (the “Plan”), Entrada Therapeutics, Inc. (the “Company”)  hereby grants an award of the number of Restricted Stock Units listed above (an “Award”) to the  Grantee named above.  Each Restricted Stock Unit shall relate to one share of Common Stock,  par value $0.0001 per share (the “Stock”) of the Company.  1. Restrictions on Transfer of Award.  This Award may not be sold, transferred,  pledged, assigned or otherwise encumbered or disposed of by the Grantee, and any shares of  Stock issuable with respect to the Award may not be sold, transferred, pledged, assigned or  otherwise encumbered or disposed of until (i) the Restricted Stock Units have vested as provided  in Paragraph 2 of this Agreement and (ii) shares of Stock have been issued to the Grantee in  accordance with the terms of the Plan and this Agreement.  2. Vesting of Restricted Stock Units.  The restrictions and conditions of Paragraph 1  of this Agreement shall lapse on the Vesting Date or Dates specified in the following schedule so  long as the Grantee remains in a Service Relationship on such Dates.  If a series of Vesting Dates  is specified, then the restrictions and conditions in Paragraph 1 shall lapse only with respect to  the number of Restricted Stock Units specified as vested on such date.  Incremental Number of  Restricted Stock Units Vested Vesting Date  _____________ (___%) _______________  _____________ (___%) _______________  _____________ (___%) _______________  _____________ (___%) _______________  The Administrator may at any time accelerate the vesting schedule specified in this  Paragraph 2.  3. Termination of Service Relationship.  If the Grantee’s Service Relationship  terminates for any reason (including death or disability) prior to the satisfaction of the vesting  conditions set forth in Paragraph 2 above, then, unless otherwise determined by the  Administrator, any Restricted Stock Units that have not vested as of such date shall  automatically and without notice terminate and be forfeited, and neither the Grantee nor any of  
 
 
 
   2    his or her successors, heirs, assigns, or personal representatives will thereafter have any further  rights or interests in such unvested Restricted Stock Units.  4. Issuance of Shares of Stock.  As soon as practicable following each Vesting Date  (but in no event later than two and one-half months after the end of the year in which the Vesting  Date occurs), the Company shall issue to the Grantee the number of shares of Stock equal to the  aggregate number of Restricted Stock Units that have vested pursuant to Paragraph 2 of this  Agreement on such date and the Grantee shall thereafter have all the rights of a stockholder of  the Company with respect to such shares.   5. Incorporation of Plan.  Notwithstanding anything herein to the contrary, this  Agreement shall be subject to and governed by all the terms and conditions of the Plan, including  the powers of the Administrator set forth in Section 2(b) of the Plan.  Capitalized terms in this  Agreement shall have the meaning specified in the Plan, unless a different meaning is specified  herein.  6. Tax Withholding.   The Grantee shall, not later than the date as of which the  receipt of this Award becomes a taxable event for Federal income tax purposes, pay to the  Company or make arrangements satisfactory to the Administrator for payment of any Federal,  state, and local taxes required by law to be withheld on account of such taxable event.  The  Company shall have the authority to cause the required tax withholding obligation to be satisfied,  in whole or in part, by withholding from shares of Stock to be issued to the Grantee a number of  shares of Stock with an aggregate Fair Market Value that would satisfy the withholding amount  due.  7. Section 409A of the Code.  This Agreement shall be interpreted in such a manner  that all provisions relating to the settlement of the Award are exempt from the requirements of  Section 409A of the Code as “short-term deferrals” as described in Section 409A of the Code.  8. No Obligation to Continue Service Relationship.  Neither the Company nor any  Subsidiary is obligated by or as a result of the Plan or this Agreement to continue the Grantee’s  Service Relationship and neither the Plan nor this Agreement shall interfere in any way with the  right of the Company or any Subsidiary to terminate the Service Relationship of the Grantee at  any time.  9. Integration.  This Agreement constitutes the entire agreement between the parties  with respect to this Award and supersedes all prior agreements and discussions between the  parties concerning such subject matter.  10. Data Privacy Consent.  In order to administer the Plan and this Agreement and to  implement or structure future equity grants, the Company, its subsidiaries and affiliates and  certain agents thereof (together, the “Relevant Companies”) may process any and all personal or  professional data, including but not limited to Social Security or other identification number,  home address and telephone number, date of birth and other information that is necessary or  desirable for the administration of the Plan and/or this Agreement (the “Relevant Information”).   By entering into this Agreement, the Grantee (i) authorizes the Company to collect, process,  register and transfer to the Relevant Companies all Relevant Information; (ii) waives any privacy  rights the Grantee may have with respect to the Relevant Information; (iii) authorizes the  
 
 
 
   3    Relevant Companies to store and transmit such information in electronic form; and (iv)  authorizes the transfer of the Relevant Information to any jurisdiction in which the Relevant  Companies consider appropriate.  The Grantee shall have access to, and the right to change, the  Relevant Information.  Relevant Information will only be used in accordance with applicable  law.  11. Notices.  Notices hereunder shall be mailed or delivered to the Company at its  principal place of business and shall be mailed or delivered to the Grantee at the address on file  with the Company or, in either case, at such other address as one party may subsequently furnish  to the other party in writing.  ENTRADA THERAPEUTICS, INC.  By:     Title:  The foregoing Agreement is hereby accepted and the terms and conditions thereof hereby agreed  to by the undersigned.  Electronic acceptance of this Agreement pursuant to the Company’s  instructions to the Grantee (including through an online acceptance process) is acceptable.  Dated:      Grantee’s Signature    Grantee’s name and address:           
 
 
 
NON-QUALIFIED STOCK OPTION AGREEMENT  FOR NON-EMPLOYEE DIRECTORS  UNDER THE ENTRADA THERAPEUTICS, INC.  2021 STOCK OPTION AND INCENTIVE PLAN  Name of Optionee:    No. of Option Shares:    Option Exercise Price per Share: $    [FMV on Grant Date]  Grant Date:    Expiration Date:     [No more than 10 years]  Pursuant to the Entrada Therapeutics, Inc. 2021 Stock Option and Incentive Plan as  amended through the date hereof (the “Plan”), Entrada Therapeutics, Inc. (the “Company”)  hereby grants to the Optionee named above, who is a Director of the Company but is not an  employee of the Company, an option (the “Stock Option”) to purchase on or prior to the  Expiration Date specified above all or part of the number of shares of Common Stock, par value  $0.0001 per share (the “Stock”), of the Company specified above at the Option Exercise Price  per Share specified above subject to the terms and conditions set forth herein and in the Plan.   This Stock Option is not intended to be an “incentive stock option” under Section 422 of the  Internal Revenue Code of 1986, as amended.  1. Exercisability Schedule.  No portion of this Stock Option may be exercised until  such portion shall have become exercisable.  Except as set forth below, and subject to the  discretion of the Administrator (as defined in Section 1 of the Plan) to accelerate the  exercisability schedule hereunder, this Stock Option shall be exercisable with respect to the  following number of Option Shares on the dates indicated so long as the Optionee remains in a  Service Relationship on such dates:  Incremental Number of  Option Shares Exercisable Exercisability Date  _____________ (___%) ____________  _____________ (___%) ____________  _____________ (___%) ____________  _____________ (___%) ____________  _____________ (___%) ____________  
 
 
 
   2    Once exercisable, this Stock Option shall continue to be exercisable at any time or times  prior to the close of business on the Expiration Date, subject to the provisions hereof and of the  Plan.  2. Manner of Exercise.  (a) The Optionee may exercise this Stock Option only in the following  manner:  from time to time on or prior to the Expiration Date of this Stock Option, the Optionee  may give written notice to the Administrator of his or her election to purchase some or all of the  Option Shares purchasable at the time of such notice.  This notice shall specify the number of  Option Shares to be purchased.  Payment of the purchase price for the Option Shares may be made by one or more of the  following methods:  (i) in cash, by certified or bank check or other instrument acceptable to the  Administrator; (ii) through the delivery (or attestation to the ownership) of shares of Stock that  have been purchased by the Optionee on the open market or that are beneficially owned by the  Optionee and are not then subject to any restrictions under any Company plan and that otherwise  satisfy any holding periods as may be required by the Administrator; (iii) by the Optionee  delivering to the Company a properly executed exercise notice together with irrevocable  instructions to a broker to promptly deliver to the Company cash or a check payable and  acceptable to the Company to pay the option purchase price, provided that in the event the  Optionee chooses to pay the option purchase price as so provided, the Optionee and the broker  shall comply with such procedures and enter into such agreements of indemnity and other  agreements as the Administrator shall prescribe as a condition of such payment procedure;  (iv) by a “net exercise” arrangement pursuant to which the Company will reduce the number of  shares of Stock issuable upon exercise by the largest whole number of shares with a Fair Market  Value that does not exceed the aggregate exercise price; or (v) a combination of (i), (ii), (iii) and  (iv) above.  Payment instruments will be received subject to collection.  The transfer to the Optionee on the records of the Company or of the transfer agent of the  Option Shares will be contingent upon (i) the Company’s receipt from the Optionee of the full  purchase price for the Option Shares, as set forth above, (ii) the fulfillment of any other  requirements contained herein or in the Plan or in any other agreement or provision of laws, and  (iii) the receipt by the Company of any agreement, statement or other evidence that the Company  may require to satisfy itself that the issuance of Stock to be purchased pursuant to the exercise of  Stock Options under the Plan and any subsequent resale of the shares of Stock will be in  compliance with applicable laws and regulations.  In the event the Optionee chooses to pay the  purchase price by previously-owned shares of Stock through the attestation method, the number  of shares of Stock transferred to the Optionee upon the exercise of the Stock Option shall be net  of the Shares attested to.  (b) The shares of Stock purchased upon exercise of this Stock Option shall be  transferred to the Optionee on the records of the Company or of the transfer agent upon  compliance to the satisfaction of the Administrator with all requirements under applicable laws  or regulations in connection with such transfer and with the requirements hereof and of the Plan.   The determination of the Administrator as to such compliance shall be final and binding on the  Optionee.  The Optionee shall not be deemed to be the holder of, or to have any of the rights of a  
 
 
 
NON-QUALIFIED STOCK OPTION AGREEMENT  FOR NON-EMPLOYEE DIRECTORS  UNDER THE ENTRADA THERAPEUTICS, INC.  2021 STOCK OPTION AND INCENTIVE PLAN  Name of Optionee:    No. of Option Shares:    Option Exercise Price per Share: $    [FMV on Grant Date]  Grant Date:    Expiration Date:     [No more than 10 years]  Pursuant to the Entrada Therapeutics, Inc. 2021 Stock Option and Incentive Plan as  amended through the date hereof (the “Plan”), Entrada Therapeutics, Inc. (the “Company”)  hereby grants to the Optionee named above, who is a Director of the Company but is not an  employee of the Company, an option (the “Stock Option”) to purchase on or prior to the  Expiration Date specified above all or part of the number of shares of Common Stock, par value  $0.0001 per share (the “Stock”), of the Company specified above at the Option Exercise Price  per Share specified above subject to the terms and conditions set forth herein and in the Plan.   This Stock Option is not intended to be an “incentive stock option” under Section 422 of the  Internal Revenue Code of 1986, as amended.  1. Exercisability Schedule.  No portion of this Stock Option may be exercised until  such portion shall have become exercisable.  Except as set forth below, and subject to the  discretion of the Administrator (as defined in Section 1 of the Plan) to accelerate the  exercisability schedule hereunder, this Stock Option shall be exercisable with respect to the  following number of Option Shares on the dates indicated so long as the Optionee remains in a  Service Relationship on such dates:  Incremental Number of  Option Shares Exercisable Exercisability Date  _____________ (___%) ____________  _____________ (___%) ____________  _____________ (___%) ____________  _____________ (___%) ____________  _____________ (___%) ____________  
 
 
 
   2    Once exercisable, this Stock Option shall continue to be exercisable at any time or times  prior to the close of business on the Expiration Date, subject to the provisions hereof and of the  Plan.  2. Manner of Exercise.  (a) The Optionee may exercise this Stock Option only in the following  manner:  from time to time on or prior to the Expiration Date of this Stock Option, the Optionee  may give written notice to the Administrator of his or her election to purchase some or all of the  Option Shares purchasable at the time of such notice.  This notice shall specify the number of  Option Shares to be purchased.  Payment of the purchase price for the Option Shares may be made by one or more of the  following methods:  (i) in cash, by certified or bank check or other instrument acceptable to the  Administrator; (ii) through the delivery (or attestation to the ownership) of shares of Stock that  have been purchased by the Optionee on the open market or that are beneficially owned by the  Optionee and are not then subject to any restrictions under any Company plan and that otherwise  satisfy any holding periods as may be required by the Administrator; (iii) by the Optionee  delivering to the Company a properly executed exercise notice together with irrevocable  instructions to a broker to promptly deliver to the Company cash or a check payable and  acceptable to the Company to pay the option purchase price, provided that in the event the  Optionee chooses to pay the option purchase price as so provided, the Optionee and the broker  shall comply with such procedures and enter into such agreements of indemnity and other  agreements as the Administrator shall prescribe as a condition of such payment procedure;  (iv) by a “net exercise” arrangement pursuant to which the Company will reduce the number of  shares of Stock issuable upon exercise by the largest whole number of shares with a Fair Market  Value that does not exceed the aggregate exercise price; or (v) a combination of (i), (ii), (iii) and  (iv) above.  Payment instruments will be received subject to collection.  The transfer to the Optionee on the records of the Company or of the transfer agent of the  Option Shares will be contingent upon (i) the Company’s receipt from the Optionee of the full  purchase price for the Option Shares, as set forth above, (ii) the fulfillment of any other  requirements contained herein or in the Plan or in any other agreement or provision of laws, and  (iii) the receipt by the Company of any agreement, statement or other evidence that the Company  may require to satisfy itself that the issuance of Stock to be purchased pursuant to the exercise of  Stock Options under the Plan and any subsequent resale of the shares of Stock will be in  compliance with applicable laws and regulations.  In the event the Optionee chooses to pay the  purchase price by previously-owned shares of Stock through the attestation method, the number  of shares of Stock transferred to the Optionee upon the exercise of the Stock Option shall be net  of the Shares attested to.  (b) The shares of Stock purchased upon exercise of this Stock Option shall be  transferred to the Optionee on the records of the Company or of the transfer agent upon  compliance to the satisfaction of the Administrator with all requirements under applicable laws  or regulations in connection with such transfer and with the requirements hereof and of the Plan.   The determination of the Administrator as to such compliance shall be final and binding on the  Optionee.  The Optionee shall not be deemed to be the holder of, or to have any of the rights of a  
 
 
 
   3    holder with respect to, any shares of Stock subject to this Stock Option unless and until this  Stock Option shall have been exercised pursuant to the terms hereof, the Company or the transfer  agent shall have transferred the shares to the Optionee, and the Optionee’s name shall have been  entered as the stockholder of record on the books of the Company.  Thereupon, the Optionee  shall have full voting, dividend and other ownership rights with respect to such shares of Stock.  (c) The minimum number of shares with respect to which this Stock Option  may be exercised at any one time shall be 100 shares, unless the number of shares with respect to  which this Stock Option is being exercised is the total number of shares subject to exercise under  this Stock Option at the time.  (d) Notwithstanding any other provision hereof or of the Plan, no portion of  this Stock Option shall be exercisable after the Expiration Date hereof.  3. Termination of Service Relationship. If the Optionee’s Service Relationship  terminates, the period within which to exercise the Stock Option may be subject to earlier  termination as set forth below.  (a) Termination Due to Death.  If the Optionee’s Service Relationship  terminates by reason of the Optionee’s death, any portion of this Stock Option outstanding on  such date, to the extent exercisable on the date of death, may thereafter be exercised by the  Optionee’s legal representative or legatee for a period of 12 months from the date of death or  until the Expiration Date, if earlier.  Unless otherwise determined by the Administrator, any  portion of this Stock Option that is not exercisable on the date of death shall terminate  immediately and be of no further force or effect.  (b) Other Termination.  If the Optionee’s Service Relationship terminates for  any reason other than the Optionee’s death, any portion of this Stock Option outstanding on such  date may be exercised, to the extent exercisable on the date the Optionee’s Service Relationship  terminates, for a period of six months from the date the Optionee’s Service Relationship  terminates or until the Expiration Date, if earlier.  Unless otherwise determined by the  Administrator, any portion of this Stock Option that is not exercisable on the date the Optionee’s  Service Relationship terminates immediately and be of no further force or effect.  4. Incorporation of Plan.  Notwithstanding anything herein to the contrary, this  Stock Option shall be subject to and governed by all the terms and conditions of the Plan,  including the powers of the Administrator set forth in Section 2(b) of the Plan.  Capitalized terms  in this Agreement shall have the meaning specified in the Plan, unless a different meaning is  specified herein.  5. Transferability.  This Agreement is personal to the Optionee, is non-assignable  and is not transferable in any manner, by operation of law or otherwise, other than by will or the  laws of descent and distribution.  This Stock Option is exercisable, during the Optionee’s  lifetime, only by the Optionee, and thereafter, only by the Optionee’s legal representative or  legatee.  
 
 
 
   3    holder with respect to, any shares of Stock subject to this Stock Option unless and until this  Stock Option shall have been exercised pursuant to the terms hereof, the Company or the transfer  agent shall have transferred the shares to the Optionee, and the Optionee’s name shall have been  entered as the stockholder of record on the books of the Company.  Thereupon, the Optionee  shall have full voting, dividend and other ownership rights with respect to such shares of Stock.  (c) The minimum number of shares with respect to which this Stock Option  may be exercised at any one time shall be 100 shares, unless the number of shares with respect to  which this Stock Option is being exercised is the total number of shares subject to exercise under  this Stock Option at the time.  (d) Notwithstanding any other provision hereof or of the Plan, no portion of  this Stock Option shall be exercisable after the Expiration Date hereof.  3. Termination of Service Relationship. If the Optionee’s Service Relationship  terminates, the period within which to exercise the Stock Option may be subject to earlier  termination as set forth below.  (a) Termination Due to Death.  If the Optionee’s Service Relationship  terminates by reason of the Optionee’s death, any portion of this Stock Option outstanding on  such date, to the extent exercisable on the date of death, may thereafter be exercised by the  Optionee’s legal representative or legatee for a period of 12 months from the date of death or  until the Expiration Date, if earlier.  Unless otherwise determined by the Administrator, any  portion of this Stock Option that is not exercisable on the date of death shall terminate  immediately and be of no further force or effect.  (b) Other Termination.  If the Optionee’s Service Relationship terminates for  any reason other than the Optionee’s death, any portion of this Stock Option outstanding on such  date may be exercised, to the extent exercisable on the date the Optionee’s Service Relationship  terminates, for a period of six months from the date the Optionee’s Service Relationship  terminates or until the Expiration Date, if earlier.  Unless otherwise determined by the  Administrator, any portion of this Stock Option that is not exercisable on the date the Optionee’s  Service Relationship terminates immediately and be of no further force or effect.  4. Incorporation of Plan.  Notwithstanding anything herein to the contrary, this  Stock Option shall be subject to and governed by all the terms and conditions of the Plan,  including the powers of the Administrator set forth in Section 2(b) of the Plan.  Capitalized terms  in this Agreement shall have the meaning specified in the Plan, unless a different meaning is  specified herein.  5. Transferability.  This Agreement is personal to the Optionee, is non-assignable  and is not transferable in any manner, by operation of law or otherwise, other than by will or the  laws of descent and distribution.  This Stock Option is exercisable, during the Optionee’s  lifetime, only by the Optionee, and thereafter, only by the Optionee’s legal representative or  legatee.  
 
 
 
   4    6. No Obligation to Continue in Service.  Neither the Plan nor this Stock Option  confers upon the Optionee any rights with respect to continuance as a Director or in any other  Service Relationship.    7. Integration.  This Agreement constitutes the entire agreement between the parties  with respect to this Stock Option and supersedes all prior agreements and discussions between  the parties concerning such subject matter.  8. Data Privacy Consent.  In order to administer the Plan and this Agreement and to  implement or structure future equity grants, the Company, its subsidiaries and affiliates and  certain agents thereof (together, the “Relevant Companies”) may process any and all personal or  professional data, including but not limited to Social Security or other identification number,  home address and telephone number, date of birth and other information that is necessary or  desirable for the administration of the Plan and/or this Agreement (the “Relevant Information”).   By entering into this Agreement, the Optionee (i) authorizes the Company to collect, process,  register and transfer to the Relevant Companies all Relevant Information; (ii) waives any privacy  rights the Optionee may have with respect to the Relevant Information; (iii) authorizes the  Relevant Companies to store and transmit such information in electronic form; and (iv)  authorizes the transfer of the Relevant Information to any jurisdiction in which the Relevant  Companies consider appropriate.  The Optionee shall have access to, and the right to change, the  Relevant Information.  Relevant Information will only be used in accordance with applicable  law.  9. Notices.  Notices hereunder shall be mailed or delivered to the Company at its  principal place of business and shall be mailed or delivered to the Optionee at the address on file  with the Company or, in either case, at such other address as one party may subsequently furnish  to the other party in writing.                      
 
 
 
   5    ENTRADA THERAPEUTICS, INC.  By:     Title:  The foregoing Agreement is hereby accepted and the terms and conditions thereof hereby agreed  to by the undersigned.  Electronic acceptance of this Agreement pursuant to the Company’s  instructions to the Optionee (including through an online acceptance process) is acceptable.  Dated:      Optionee’s Signature      Optionee’s name and address:           
 
 
 
INCENTIVE STOCK OPTION AGREEMENT  UNDER THE ENTRADA THERAPEUTICS, INC.  2021 STOCK OPTION AND INCENTIVE PLAN  Name of Optionee:     No. of Option Shares:    Option Exercise Price per Share: $    [FMV on Grant Date (110% of FMV if a 10% owner)]  Grant Date:     Expiration Date:      [up to 10 years (5 if a 10% owner)]  Pursuant to the Entrada Therapeutics, Inc. 2021 Stock Option and Incentive Plan as  amended through the date hereof (the “Plan”), Entrada Therapeutics, Inc. (the “Company”)  hereby grants to the Optionee named above an option (the “Stock Option”) to purchase on or  prior to the Expiration Date specified above all or part of the number of shares of Common  Stock, par value $0.0001 per share (the “Stock”), of the Company specified above at the Option  Exercise Price per Share specified above subject to the terms and conditions set forth herein and  in the Plan.  1. Exercisability Schedule.  No portion of this Stock Option may be exercised until  such portion shall have become exercisable.  Except as set forth below, and subject to the  discretion of the Administrator (as defined in Section 2 of the Plan) to accelerate the  exercisability schedule hereunder, this Stock Option shall be exercisable with respect to the  following number of Option Shares on the dates indicated so long as the Optionee remains in a  Service Relationship on such dates:  Incremental Number of  Option Shares Exercisable* Exercisability Date  _____________ (___%) ____________  _____________ (___%) ____________  _____________ (___%) ____________  _____________ (___%) ____________  _____________ (___%) ____________  * Max. of $100,000 per yr.  Once exercisable, this Stock Option shall continue to be exercisable at any time or times  prior to the close of business on the Expiration Date, subject to the provisions hereof and of the  Plan.  
 
 
 
   2    2. Manner of Exercise.  (a) The Optionee may exercise this Stock Option only in the following  manner:  from time to time on or prior to the Expiration Date of this Stock Option, the Optionee  may give written notice to the Administrator of his or her election to purchase some or all of the  Option Shares purchasable at the time of such notice.  This notice shall specify the number of  Option Shares to be purchased.  Payment of the purchase price for the Option Shares may be made by one or more of the  following methods:  (i) in cash, by certified or bank check or other instrument acceptable to the  Administrator; (ii) through the delivery (or attestation to the ownership) of shares of Stock that  have been purchased by the Optionee on the open market or that are beneficially owned by the  Optionee and are not then subject to any restrictions under any Company plan and that otherwise  satisfy any holding periods as may be required by the Administrator; or (iii) by the Optionee  delivering to the Company a properly executed exercise notice together with irrevocable  instructions to a broker to promptly deliver to the Company cash or a check payable and  acceptable to the Company to pay the option purchase price, provided that in the event the  Optionee chooses to pay the option purchase price as so provided, the Optionee and the broker  shall comply with such procedures and enter into such agreements of indemnity and other  agreements as the Administrator shall prescribe as a condition of such payment procedure; or  (iv) a combination of (i), (ii) and (iii) above.  Payment instruments will be received subject to  collection.  The transfer to the Optionee on the records of the Company or of the transfer agent of the  Option Shares will be contingent upon (i) the Company’s receipt from the Optionee of the full  purchase price for the Option Shares, as set forth above, (ii) the fulfillment of any other  requirements contained herein or in the Plan or in any other agreement or provision of laws, and  (iii) the receipt by the Company of any agreement, statement or other evidence that the Company  may require to satisfy itself that the issuance of Stock to be purchased pursuant to the exercise of  Stock Options under the Plan and any subsequent resale of the shares of Stock will be in  compliance with applicable laws and regulations.  In the event the Optionee chooses to pay the  purchase price by previously-owned shares of Stock through the attestation method, the number  of shares of Stock transferred to the Optionee upon the exercise of the Stock Option shall be net  of the Shares attested to.  (b) The shares of Stock purchased upon exercise of this Stock Option shall be  transferred to the Optionee on the records of the Company or of the transfer agent upon  compliance to the satisfaction of the Administrator with all requirements under applicable laws  or regulations in connection with such transfer and with the requirements hereof and of the Plan.   The determination of the Administrator as to such compliance shall be final and binding on the  Optionee.  The Optionee shall not be deemed to be the holder of, or to have any of the rights of a  holder with respect to, any shares of Stock subject to this Stock Option unless and until this  Stock Option shall have been exercised pursuant to the terms hereof, the Company or the transfer  agent shall have transferred the shares to the Optionee, and the Optionee’s name shall have been  entered as the stockholder of record on the books of the Company.  Thereupon, the Optionee  shall have full voting, dividend and other ownership rights with respect to such shares of Stock.  
 
 
 
   3    (c) Notwithstanding any other provision hereof or of the Plan, no portion of  this Stock Option shall be exercisable after the Expiration Date hereof.  3. Termination of Service Relationship.  If the Optionee’s Service Relationship is  terminated, the period within which to exercise the Stock Option may be subject to earlier  termination as set forth below.  (a) Termination Due to Death.  If the Optionee’s Service Relationship  terminates by reason of the Optionee’s death, any portion of this Stock Option outstanding on  such date, to the extent exercisable on the date of death, may thereafter be exercised by the  Optionee’s legal representative or legatee for a period of 12 months from the date of death or  until the Expiration Date, if earlier.  Unless otherwise determined by the Administrator, any  portion of this Stock Option that is not exercisable on the date of death shall terminate  immediately and be of no further force or effect.  (b) Termination Due to Disability.  If the Optionee’s Service Relationship  terminates by reason of the Optionee’s disability (as determined by the Administrator), any  portion of this Stock Option outstanding on such date, to the extent exercisable on the date of  such termination, may thereafter be exercised by the Optionee for a period of 12 months from the  date of disability or until the Expiration Date, if earlier.  Unless otherwise determined by the  Administrator, any portion of this Stock Option that is not exercisable on the date of disability  shall terminate immediately and be of no further force or effect.  (c) Termination for Cause.  If the Optionee’s Service Relationship terminates  for Cause, any portion of this Stock Option outstanding on such date shall terminate immediately  and be of no further force and effect.    (d) Other Termination.  If the Optionee’s Service Relationship terminates for  any reason other than the Optionee’s death, the Optionee’s disability, or Cause, and unless  otherwise determined by the Administrator, any portion of this Stock Option outstanding on such  date may be exercised, to the extent exercisable on the date of termination, for a period of three  months from the date of termination or until the Expiration Date, if earlier.  Unless otherwise  determined by the Administrator, any portion of this Stock Option that is not exercisable on the  date of termination shall terminate immediately and be of no further force or effect.  The Administrator’s determination of the reason for termination of the Optionee’s  Service Relationship shall be conclusive and binding on the Optionee and his or her  representatives or legatees.  4. Incorporation of Plan.  Notwithstanding anything herein to the contrary, this  Stock Option shall be subject to and governed by all the terms and conditions of the Plan,  including the powers of the Administrator set forth in Section 2(b) of the Plan.  Capitalized terms  in this Agreement shall have the meaning specified in the Plan, unless a different meaning is  specified herein.  5. Transferability.  This Agreement is personal to the Optionee, is non-assignable  and is not transferable in any manner, by operation of law or otherwise, other than by will or the  laws of descent and distribution.  This Stock Option is exercisable, during the Optionee’s  
 
 
 
   4    lifetime, only by the Optionee, and thereafter, only by the Optionee’s legal representative or  legatee.  6. Status of the Stock Option.  This Stock Option is intended to qualify as an  “incentive stock option” under Section 422 of the Internal Revenue Code of 1986, as amended  (the “Code”), but the Company does not represent or warrant that this Stock Option qualifies as  such.  The Optionee should consult with his or her own tax advisors regarding the tax effects of  this Stock Option and the requirements necessary to obtain favorable income tax treatment under  Section 422 of the Code, including, but not limited to, holding period requirements.  To the  extent any portion of this Stock Option does not so qualify as an “incentive stock option,” such  portion shall be deemed to be a non-qualified stock option.  If the Optionee intends to dispose or  does dispose (whether by sale, gift, transfer or otherwise) of any Option Shares within the one- year period beginning on the date after the transfer of such shares to him or her, or within the  two-year period beginning on the day after the grant of this Stock Option, he or she will so notify  the Company within 30 days after such disposition.  7. Tax Withholding.  The Optionee shall, not later than the date as of which the  exercise of this Stock Option becomes a taxable event for Federal income tax purposes, pay to  the Company or make arrangements satisfactory to the Administrator for payment of any  Federal, state, and local taxes required by law to be withheld on account of such taxable event.   The Company shall have the authority to cause the required tax withholding obligation to be  satisfied, in whole or in part, by withholding from shares of Stock to be issued to the Optionee a  number of shares of Stock with an aggregate Fair Market Value that would satisfy the  withholding amount due.   8. No Obligation to Continue Service Relationship.  Neither the Company nor any  Subsidiary is obligated by or as a result of the Plan or this Agreement to continue the Optionee’s  Service Relationship and neither the Plan nor this Agreement shall interfere in any way with the  right of the Company or any Subsidiary to terminate the Service Relationship of the Optionee at  any time.  9. Integration.  This Agreement constitutes the entire agreement between the parties  with respect to this Stock Option and supersedes all prior agreements and discussions between  the parties concerning such subject matter.  10. Data Privacy Consent.  In order to administer the Plan and this Agreement and to  implement or structure future equity grants, the Company, its subsidiaries and affiliates and  certain agents thereof (together, the “Relevant Companies”) may process any and all personal or  professional data, including but not limited to Social Security or other identification number,  home address and telephone number, date of birth and other information that is necessary or  desirable for the administration of the Plan and/or this Agreement (the “Relevant Information”).   By entering into this Agreement, the Optionee (i) authorizes the Company to collect, process,  register and transfer to the Relevant Companies all Relevant Information; (ii) waives any privacy  rights the Optionee may have with respect to the Relevant Information; (iii) authorizes the  Relevant Companies to store and transmit such information in electronic form; and (iv)  authorizes the transfer of the Relevant Information to any jurisdiction in which the Relevant  Companies consider appropriate.  The Optionee shall have access to, and the right to change, the  
 
 
 
   5    Relevant Information.  Relevant Information will only be used in accordance with applicable  law.  11. Notices.  Notices hereunder shall be mailed or delivered to the Company at its  principal place of business and shall be mailed or delivered to the Optionee at the address on file  with the Company or, in either case, at such other address as one party may subsequently furnish  to the other party in writing.  ENTRADA THERAPEUTICS, INC.  By:     Title:  The foregoing Agreement is hereby accepted and the terms and conditions thereof hereby agreed  to by the undersigned.  Electronic acceptance of this Agreement pursuant to the Company’s  instructions to the Optionee (including through an online acceptance process) is acceptable.  Dated:      Optionee’s Signature    Optionee’s name and address:           
 
 
 
NON-QUALIFIED STOCK OPTION AGREEMENT  FOR COMPANY EMPLOYEES AND CONSULTANTS  UNDER THE ENTRADA THERAPEUTICS, INC.  2021 STOCK OPTION AND INCENTIVE PLAN  Name of Optionee:    No. of Option Shares:    Option Exercise Price per Share: $    [FMV on Grant Date]  Grant Date:    Expiration Date:    Pursuant to the Entrada Therapeutics, Inc. 2021 Stock Option and Incentive Plan as  amended through the date hereof (the “Plan”), Entrada Therapeutics, Inc. (the “Company”)  hereby grants to the Optionee named above an option (the “Stock Option”) to purchase on or  prior to the Expiration Date specified above all or part of the number of shares of Common  Stock, par value $0.0001 per share (the “Stock”) of the Company specified above at the Option  Exercise Price per Share specified above subject to the terms and conditions set forth herein and  in the Plan.  This Stock Option is not intended to be an “incentive stock option” under Section  422 of the Internal Revenue Code of 1986, as amended.  1. Exercisability Schedule.  No portion of this Stock Option may be exercised until  such portion shall have become exercisable.  Except as set forth below, and subject to the  discretion of the Administrator (as defined in Section 1 of the Plan) to accelerate the  exercisability schedule hereunder, this Stock Option shall be exercisable with respect to the  following number of Option Shares on the dates indicated so long as Optionee remains in a  Service Relationship on such dates:  Incremental Number of  Option Shares Exercisable Exercisability Date  _____________ (___%) ____________  _____________ (___%) ____________  _____________ (___%) ____________  _____________ (___%) ____________  _____________ (___%) ____________  Once exercisable, this Stock Option shall continue to be exercisable at any time or times  prior to the close of business on the Expiration Date, subject to the provisions hereof and of the  Plan.  
 
 
 
 2    2. Manner of Exercise.  (a) The Optionee may exercise this Stock Option only in the following  manner:  from time to time on or prior to the Expiration Date of this Stock Option, the Optionee  may give written notice to the Administrator of his or her election to purchase some or all of the  Option Shares purchasable at the time of such notice.  This notice shall specify the number of  Option Shares to be purchased.  Payment of the purchase price for the Option Shares may be made by one or more of the  following methods:  (i) in cash, by certified or bank check or other instrument acceptable to the  Administrator; (ii) through the delivery (or attestation to the ownership) of shares of Stock that  have been purchased by the Optionee on the open market or that are beneficially owned by the  Optionee and are not then subject to any restrictions under any Company plan and that otherwise  satisfy any holding periods as may be required by the Administrator; (iii) by the Optionee  delivering to the Company a properly executed exercise notice together with irrevocable  instructions to a broker to promptly deliver to the Company cash or a check payable and  acceptable to the Company to pay the option purchase price, provided that in the event the  Optionee chooses to pay the option purchase price as so provided, the Optionee and the broker  shall comply with such procedures and enter into such agreements of indemnity and other  agreements as the Administrator shall prescribe as a condition of such payment procedure;  (iv) by a “net exercise” arrangement pursuant to which the Company will reduce the number of  shares of Stock issuable upon exercise by the largest whole number of shares with a Fair Market  Value that does not exceed the aggregate exercise price; or (v) a combination of (i), (ii), (iii) and  (iv) above.  Payment instruments will be received subject to collection.  The transfer to the Optionee on the records of the Company or of the transfer agent of the  Option Shares will be contingent upon (i) the Company’s receipt from the Optionee of the full  purchase price for the Option Shares, as set forth above, (ii) the fulfillment of any other  requirements contained herein or in the Plan or in any other agreement or provision of laws, and  (iii) the receipt by the Company of any agreement, statement or other evidence that the Company  may require to satisfy itself that the issuance of Stock to be purchased pursuant to the exercise of  Stock Options under the Plan and any subsequent resale of the shares of Stock will be in  compliance with applicable laws and regulations.  In the event the Optionee chooses to pay the  purchase price by previously-owned shares of Stock through the attestation method, the number  of shares of Stock transferred to the Optionee upon the exercise of the Stock Option shall be net  of the Shares attested to.  (b) The shares of Stock purchased upon exercise of this Stock Option shall be  transferred to the Optionee on the records of the Company or of the transfer agent upon  compliance to the satisfaction of the Administrator with all requirements under applicable laws  or regulations in connection with such transfer and with the requirements hereof and of the Plan.   The determination of the Administrator as to such compliance shall be final and binding on the  Optionee.  The Optionee shall not be deemed to be the holder of, or to have any of the rights of a  holder with respect to, any shares of Stock subject to this Stock Option unless and until this  Stock Option shall have been exercised pursuant to the terms hereof, the Company or the transfer  agent shall have transferred the shares to the Optionee, and the Optionee’s name shall have been  
 
 
 
 3    entered as the stockholder of record on the books of the Company.  Thereupon, the Optionee  shall have full voting, dividend and other ownership rights with respect to such shares of Stock.  (c) Notwithstanding any other provision hereof or of the Plan, no portion of  this Stock Option shall be exercisable after the Expiration Date hereof.  3. Termination of Service Relationship.  If the Optionee’s Service Relationship is  terminated, the period within which to exercise the Stock Option may be subject to earlier  termination as set forth below.  (a) Termination Due to Death.  If the Optionee’s Service Relationship  terminates by reason of the Optionee’s death, any portion of this Stock Option outstanding on  such date, to the extent exercisable on the date of death, may thereafter be exercised by the  Optionee’s legal representative or legatee for a period of 12 months from the date of death or  until the Expiration Date, if earlier.  Unless otherwise determined by the Administrator, any  portion of this Stock Option that is not exercisable on the date of death shall terminate  immediately and be of no further force or effect.  (b) Termination Due to Disability.  If the Optionee’s Service Relationship  terminates by reason of the Optionee’s disability (as determined by the Administrator), any  portion of this Stock Option outstanding on such date, to the extent exercisable on the date of  such termination, may thereafter be exercised by the Optionee for a period of 12 months from the  date of disability or until the Expiration Date, if earlier.  Unless otherwise determined by the  Administrator, any portion of this Stock Option that is not exercisable on the date of disability  shall terminate immediately and be of no further force or effect.  (c) Termination for Cause.  If the Optionee’s Service Relationship terminates  for Cause, any portion of this Stock Option outstanding on such date shall terminate immediately  and be of no further force and effect.    (d) Other Termination.  If the Optionee’s Service Relationship terminates for  any reason other than the Optionee’s death, the Optionee’s disability or Cause, and unless  otherwise determined by the Administrator, any portion of this Stock Option outstanding on such  date may be exercised, to the extent exercisable on the date of termination, for a period of three  months from the date of termination or until the Expiration Date, if earlier.  Unless otherwise  determined by the Administrator, any portion of this Stock Option that is not exercisable on the  date of termination shall terminate immediately and be of no further force or effect.  The Administrator’s determination of the reason for termination of the Optionee’s  Service Relationship shall be conclusive and binding on the Optionee and his or her  representatives or legatees.  4. Incorporation of Plan.  Notwithstanding anything herein to the contrary, this  Stock Option shall be subject to and governed by all the terms and conditions of the Plan,  including the powers of the Administrator set forth in  Section 2(b) of the Plan.  Capitalized  terms in this Agreement shall have the meaning specified in the Plan, unless a different meaning  is specified herein.  
 
 
 
 4    5. Transferability.  This Agreement is personal to the Optionee, is non-assignable  and is not transferable in any manner, by operation of law or otherwise, other than by will or the  laws of descent and distribution.  This Stock Option is exercisable, during the Optionee’s  lifetime, only by the Optionee, and thereafter, only by the Optionee’s legal representative or  legatee.  6. Tax Withholding.  The Optionee shall, not later than the date as of which the  exercise of this Stock Option becomes a taxable event for Federal income tax purposes, pay to  the Company or make arrangements satisfactory to the Administrator for payment of any  Federal, state, and local taxes required by law to be withheld on account of such taxable event.   The Company shall have the authority to cause the required tax withholding obligation to be  satisfied, in whole or in part, by withholding from shares of Stock to be issued to the Optionee a  number of shares of Stock with an aggregate Fair Market Value that would satisfy the  withholding amount due.   7. No Obligation to Continue Service Relationship.  Neither the Company nor any  Subsidiary is obligated by or as a result of the Plan or this Agreement to continue the Optionee’s  Service Relationship and neither the Plan nor this Agreement shall interfere in any way with the  right of the Company or any Subsidiary to terminate the Service Relationship of the Optionee at  any time.  8. Integration.  This Agreement constitutes the entire agreement between the parties  with respect to this Stock Option and supersedes all prior agreements and discussions between  the parties concerning such subject matter.  9. Data Privacy Consent.  In order to administer the Plan and this Agreement and to  implement or structure future equity grants, the Company, its subsidiaries and affiliates and  certain agents thereof (together, the “Relevant Companies”) may process any and all personal or  professional data, including but not limited to Social Security or other identification number,  home address and telephone number, date of birth and other information that is necessary or  desirable for the administration of the Plan and/or this Agreement (the “Relevant Information”).   By entering into this Agreement, the Optionee (i) authorizes the Company to collect, process,  register and transfer to the Relevant Companies all Relevant Information; (ii) waives any privacy  rights the Optionee may have with respect to the Relevant Information; (iii) authorizes the  Relevant Companies to store and transmit such information in electronic form; and (iv)  authorizes the transfer of the Relevant Information to any jurisdiction in which the Relevant  Companies consider appropriate.  The Optionee shall have access to, and the right to change, the  Relevant Information.  Relevant Information will only be used in accordance with applicable  law.  
 
 
 
 5    10. Notices.  Notices hereunder shall be mailed or delivered to the Company at its  principal place of business and shall be mailed or delivered to the Optionee at the address on file  with the Company or, in either case, at such other address as one party may subsequently furnish  to the other party in writing.  ENTRADA THERAPEUTICS, INC.  By:     Title:  The foregoing Agreement is hereby accepted and the terms and conditions thereof hereby agreed  to by the undersigned.  Electronic acceptance of this Agreement pursuant to the Company’s  instructions to the Optionee (including through an online acceptance process) is acceptable.  Dated:      Optionee’s Signature    Optionee’s name and address:           
 
 
 
      PERFORMANCE RESTRICTED STOCK UNIT AWARD AGREEMENT  FOR COMPANY EMPLOYEES AND CONSULTANTS  UNDER THE ENTRADA THERAPEUTICS, INC.  2021 STOCK OPTION AND INCENTIVE PLAN  Name of Grantee:    No. of Restricted Stock Units:    Grant Date:    Pursuant to the Entrada Therapeutics, Inc. 2021 Stock Option and Incentive Plan as amended  through the date hereof (the “Plan”), Entrada Therapeutics, Inc. (the “Company”) hereby grants an award  of the number of Restricted Stock Units listed above (an “Award”) to the Grantee named above.  Each  Restricted Stock Unit shall relate to one share of Common Stock, par value $0.0001 per share (the  “Stock”) of the Company.  Restrictions on Transfer of Award.  This Award may not be sold, transferred, pledged, assigned  or otherwise encumbered or disposed of by the Grantee, and any shares of Stock issuable with respect to  the Award may not be sold, transferred, pledged, assigned or otherwise encumbered or disposed of until  (i) the Restricted Stock Units have vested as provided in Paragraph 2 of this Agreement and (ii) shares of  Stock have been issued to the Grantee in accordance with the terms of the Plan and this Agreement.  Vesting of Restricted Stock Units.  The restrictions and conditions of Paragraph 1 of this  Agreement shall lapse on the Vesting Date or Dates specified on the schedule set forth on Schedule A, so  long as the Grantee remains in a Service Relationship on such Dates.  The Administrator may at any time  accelerate the vesting schedule specified in this Paragraph 2.  Termination of Service Relationship.  If the Grantee’s Service Relationship terminates for any  reason (including death or disability) prior to the satisfaction of the vesting conditions set forth in  Paragraph 2 above, then, unless otherwise determined by the Administrator, any Restricted Stock Units  that have not vested as of such date shall automatically and without notice terminate and be forfeited, and  neither the Grantee nor any of his or her successors, heirs, assigns, or personal representatives will  thereafter have any further rights or interests in such unvested Restricted Stock Units.  Issuance of Shares of Stock.  As soon as practicable following each Vesting Date (but in no event  later than two and one-half months after the end of the year in which the Vesting Date occurs), the  Company shall issue to the Grantee the number of shares of Stock equal to the aggregate number of  Restricted Stock Units that have vested pursuant to Paragraph 2 of this Agreement on such date and the  Grantee shall thereafter have all the rights of a stockholder of the Company with respect to such shares.   Incorporation of Plan.  Notwithstanding anything herein to the contrary, this Agreement shall be  subject to and governed by all the terms and conditions of the Plan, including the powers of the  Administrator set forth in Section 2(b) of the Plan.  Capitalized terms in this Agreement shall have the  meaning specified in the Plan, unless a different meaning is specified herein.  Tax Withholding.   The Grantee shall, not later than the date as of which the receipt of this Award  becomes a taxable event for Federal income tax purposes, pay to the Company or make arrangements  
 
 
 
      satisfactory to the Administrator for payment of any Federal, state, and local taxes required by law to be  withheld on account of such taxable event.  The Company shall have the authority to cause the required  tax withholding obligation to be satisfied, in whole or in part, by withholding from shares of Stock to be  issued to the Grantee a number of shares of Stock with an aggregate Fair Market Value that would satisfy  the withholding amount due.  Section 409A of the Code.  This Agreement shall be interpreted in such a manner that all  provisions relating to the settlement of the Award are exempt from the requirements of Section 409A of  the Code as “short-term deferrals” as described in Section 409A of the Code.  No Obligation to Continue Service Relationship.  Neither the Company nor any Subsidiary is  obligated by or as a result of the Plan or this Agreement to continue the Grantee’s Service Relationship  and neither the Plan nor this Agreement shall interfere in any way with the right of the Company or any  Subsidiary to terminate the Service Relationship of the Grantee at any time.  Integration.  This Agreement constitutes the entire agreement between the parties with respect to  this Award and supersedes all prior agreements and discussions between the parties concerning such  subject matter.  Data Privacy Consent.  In order to administer the Plan and this Agreement and to implement or  structure future equity grants, the Company, its subsidiaries and affiliates and certain agents thereof  (together, the “Relevant Companies”) may process any and all personal or professional data, including but  not limited to Social Security or other identification number, home address and telephone number, date of  birth and other information that is necessary or desirable for the administration of the Plan and/or this  Agreement (the “Relevant Information”).  By entering into this Agreement, the Grantee (i) authorizes the  Company to collect, process, register and transfer to the Relevant Companies all Relevant Information;  (ii) waives any privacy rights the Grantee may have with respect to the Relevant Information; (iii)  authorizes the Relevant Companies to store and transmit such information in electronic form; and (iv)  authorizes the transfer of the Relevant Information to any jurisdiction in which the Relevant Companies  consider appropriate.  The Grantee shall have access to, and the right to change, the Relevant Information.   Relevant Information will only be used in accordance with applicable law.  
 
 
 
      Notices.  Notices hereunder shall be mailed or delivered to the Company at its principal place of  business and shall be mailed or delivered to the Grantee at the address on file with the Company or, in  either case, at such other address as one party may subsequently furnish to the other party in writing.  ENTRADA THERAPEUTICS, INC.  By:    Title:  The foregoing Agreement is hereby accepted and the terms and conditions thereof hereby agreed to by the  undersigned.  Electronic acceptance of this Agreement pursuant to the Company’s instructions to the  Grantee (including through an online acceptance process) is acceptable.  Dated:      Grantee’s Signature    Grantee’s name and address:             
 
 
 
      SCHEDULE A