Docusign Envelope ID: 5693033E-747C-47C3-BCF1-C73B42964F93

Tenant: Ambiq Micro, Inc. Premises: River Place – Building 7, Suite 200

FOURTH AMENDMENT TO LEASE

THIS FOURTH AMENDMENT TO LEASE (“Amendment”) is made and entered into as of

4/30/2025 (“Effective Date”), by and between G&I VII RIVER PLACE LP, a Delaware limited

partnership (“Landlord”), and AMBIQ MICRO, INC., a Delaware corporation (“Tenant”).

NOW, THEREFORE, in consideration of the mutual covenants and agreements contained herein, and intending to be legally bound, Landlord and Tenant hereby agree as follows:

(iv) Tenant is the originally named Tenant; and (v) Tenant (and not a subtenant) is occupying and paying full Rent on 100% of the Premises for the conduct of Tenant’s business, then if, at any time prior to June

30, 2026, Landlord desires to execute a written letter of intent or lease proposal with a potential tenant for the approximately 25,076 rentable square foot space located on the third floor of Building 1 (as defined below), presently known as Suite 300, which space is shown on Exhibit A attached hereto (“Refusal Space”), Landlord shall so notify Tenant in writing (“Landlord’s ROFR Notice”) and, subject to the terms and provisions of this Section, Tenant shall have the one-time right (“Right of First Refusal”) to enter into a lease for the entire (but not less than the entire) Refusal Space upon the terms set forth in this Section 5 by delivering Tenant’s written notice of such election to Landlord (“Tenant’s Notice”) within five days after Tenant’s receipt of Landlord’s ROFR Notice. “Building 1” means the building known as River Place – Building 1 located at 6500 River Place Boulevard, Austin, Texas, which contains approximately 76,529 rentable square feet and is currently owned by Landlord. The Right of First Refusal is subject, subordinate, and in all respects inferior to the rights of any third-party tenant leasing space at River Place as of the date of this Amendment (including, without limitation, any lease term extension period(s) contained in such tenant’s lease, regardless of whether the extension right or agreement is contained in such lease or is agreed to at any time by Landlord and the tenant under such lease). Upon Tenant’s delivery of Tenant’s Notice, Tenant may not thereafter revoke Tenant’s exercise of the Right of First Refusal. The date of Landlord’s receipt of Tenant’s Notice is referred to herein as the “Exercise Date”.

tenancies. If requested by Tenant in writing prior to delivery of the Refusal Space, Landlord shall remove from the Refusal Space all FF&E and phone and data cabling from the prior tenant. Effective on the date of such delivery of possession, for purposes of all insurance and indemnity provisions in the Lease, the term “Premises” shall refer to both the Current Premises and the Refusal Space.

(A) the Term for the Current Premises shall expire on June 30, 2026; (B) notwithstanding anything to the contrary herein, during the period from the New Premises Commencement Date through June 30, 2026 the Premises shall include both the Current Premises and the Refusal Space and Tenant shall be responsible for Rent for both spaces; and (C) “Current Premises Surrender Date” means June 30, 2026.

(i) if the New Premises Commencement Date is the first day of a calendar month, the day immediately prior to the 87-month anniversary of the New Premises Commencement Date; or (ii) if the New Premises Commencement Date is not the first day of a calendar month, the last day of the calendar month containing the 87-month anniversary of the New Premises Commencement Date. Notwithstanding the foregoing, if the New Premises Commencement Date is on or before June 30, 2026, then the Term for the Refusal Space is hereby extended through 11:59 p.m. on September 30, 2033.

respect to the Refusal Space during the Term as follows, payable in advance in the monthly installments set forth below and otherwise in accordance with the terms of the Lease:

“Fixed Rent Abatement Period” means the period that begins on the New Premises Commencement Date, and ends on the day immediately prior to the three-month anniversary of the New Premises Commencement Date. “New Premises Rent Period” means, with respect to New Premises Rent Period 1, the period that begins on the day after the end of the Fixed Rent Abatement Period, and ends on the last day of the calendar month preceding the month in which the first anniversary of the New Premises Commencement Date occurs; thereafter each succeeding New Premises Rent Period shall commence on the day following the end of the preceding New Premises Rent Period, and shall extend for 12 consecutive months, except that New Premises Rent Period 8 shall end on the last day of the Term as extended by Section 5(c)(viii) above. Nothing contained herein may be deemed to diminish or relieve Tenant of its obligation to pay in accordance with the terms of the Lease all sums owed by Tenant to Landlord during the Fixed Rent Abatement Period other than Fixed Rent with respect to the Refusal Space. Notwithstanding the foregoing, if at any time during the Term an Event of Default occurs, then the abatement of Fixed Rent provided above immediately becomes void, and the monthly Fixed Rent for the Refusal Space during the Fixed Rent Abatement Period equals $45,972.67.

*Notwithstanding anything to the contrary in this Section 5(c)(ix): (A) for the period from the day after the end of the Fixed Rent Abatement Period through the day prior to the six-month anniversary of the New Premises Commencement Date, Fixed Rent shall be calculated as if the Premises only contain 12,402 rentable square feet; (B) for the subsequent six-month period, Fixed Rent shall be calculated as if the Premises only contain 16,627 rentable square feet; (C) for the subsequent six-month period, Fixed Rent shall be calculated as if the Premises only contain 20,852 rentable square feet; and (D) prior to the 18-month anniversary of the New Premises Commencement Date, Tenant’s Share for purposes of calculating Operating Expenses shall be calculated as the rentable square footage of the Refusal Space occupied by Tenant for business purposes (instead of 25,076) divided by 76,529 (the rentable square footage of Building 1). From and after the 18-month anniversary of the New Premises Commencement Date, Tenant’s Share and Fixed Rent shall be calculated based on the entire 25,075 rentable square feet in the Refusal Space.

respect to Building 1.

of the Right of First Refusal). Landlord and the tenant proposing to lease the Potential Refusal Space shall not be precluded from making changes to the Proposal during lease negotiations so long as such changes are the result of arm’s-length negotiations between Landlord and such prospective tenant and not the result of bad faith and collusion insofar as Tenant’s interests are concerned, and so long as the changes do not substantially alter the terms set forth in the Proposal. Provided Landlord has complied with the terms of the following sentence, Landlord will have no liability to Tenant if Landlord does not deliver or does not timely deliver the Potential Refusal Space to Tenant. Landlord will promptly commence and diligently pursue obtaining possession of the Potential Refusal Space so that Landlord can timely deliver the Potential Refusal Space to Tenant. Nothing herein contained shall obligate Landlord to make any payment to the Prior Occupant in order to entice the Prior Occupant to physically vacate and surrender possession of the Potential Refusal Space. Landlord shall determine the exact location of any demising walls for the Potential Refusal Space.

(B) the number “3” is deleted and replaced with “8”.

[SIGNATURES ON FOLLOWING PAGE]

IN WITNESS WHEREOF, Landlord and Tenant have duly executed this Amendment as of the date first-above written.

LANDLORD:

G&I VII RIVER PLACE LP

By: G&I VII River Place GP LLC, its general partner

By:

Name: Bill Redd

Title: EVP & Senior Managing Director

Date: 4/30/2025

TENANT:

AMBIQ MICRO, INC.

By:

Name: Scott Goodwin

Title: CFO

Date: 4/30/2025

EXHIBIT A

EXHIBIT B

CONF1RMATION OF LEASE TERM

THIS CONFIRMATION OF LEASE TERM ("COLT") is made as of between

("Landlord") and ("Tenant").

1.

Landlord and Tenant are parties to that certain lease dated ("Lease Document"), with respect to the premises described in the Lease Document, known as Suite consisting of approximately _ rentable square feet ("Premises"), located at

$ - Tenant has delivered the Security Deposit and/or Letter of Credit per the Lease Document in the amount of$ _

6.

The Building Number is and the Lease Number is . This information must accompany every payment of Rent made by Tenant to Landlord per the Lease Document.

TENANT: LANDLORD:

EXHIBIT C LEASEHOLD IMPROVEMENTS

This Exhibit C-Leasehold Improvements (“Exhibit”) is a part of the Amendment to which this Exhibit is attached. Capitalized terms not defined in this Exhibit shall have the meanings set forth for such terms in the Amendment.

for, all of the Refusal Space in accordance with the CD’s, or otherwise approved in writing by Landlord or paid for in whole or in part from the Improvement Allowance. Any provision of this Exhibit to the contrary notwithstanding, the Leasehold Improvements shall not include Tenant’s Equipment or any of the associated permits therefor.

Landlord’s receipt of the Proposed CD’s, Landlord shall notify Tenant in writing as to whether Landlord approves or disapproves such Proposed CD’s, which approval shall not be unreasonably withheld, conditioned, or delayed. If Landlord disapproves of the Proposed CD’s, or approves the Proposed CD’s subject to modifications, Landlord shall state in its written notice to Tenant the reasons therefor, and Tenant, upon receipt of such written notice, shall revise and within five business days thereafter resubmit the Proposed CD’s to Landlord for review and Landlord’s reasonable approval, which approval shall not be unreasonably withheld. All design, construction, and installation in connection with the Leasehold Improvements shall conform to the requirements of applicable building, plumbing, and electrical codes and the requirements of any authority having jurisdiction over, or with respect to, such Leasehold Improvements. All reasonable third-party costs incurred by Landlord in reviewing the Proposed CD’s shall be paid by Tenant to Landlord within 30 days after receipt by Tenant of a statement of such costs. Landlord’s approval of the CD’s is not a representation that: (I) such CD’s are in compliance with all applicable Laws; or (II) the CD’s or design is sufficient for the intended purposes. Tenant shall be responsible for all elements of the design of the Leasehold Improvements and the CD’s (including, without limitation, compliance with Laws, functionality of design, the structural integrity of the design, the configuration of the Refusal Space and the placement of Tenant’s furniture, appliances and equipment), and Landlord’s approval of the Leasehold Improvements and the CD’s shall in no event relieve Tenant of the responsibility for such design, or create responsibility or liability on Landlord’s part for their completeness, design sufficiency, or compliance with Laws.

contractor who, at Tenant’s option, shall either be the Contractor or one of the general contractors to whom Tenant bids the Leasehold Improvements. The Contractor shall contract for such work directly with Tenant, but shall perform such work in coordination with Landlord’s operation of the Building. Tenant shall provide Landlord with a copy of the executed Construction Contract promptly after execution (but in any event prior to commencement of construction), and from time to time a list of all subcontractors the Contractor will use in connection with the performance of the Leasehold Improvements as such subcontractors are selected to assist in the performance of the Leasehold Improvements. Tenant’s contractors and subcontractors shall work in harmony and shall not interfere with labor employed by Landlord, or its contractors or subcontractors or by any other tenant or their contractors. Tenant shall have the option to engage a separate third-party construction manager to assist in the design, bidding, and construction process. Subject to the terms of the Lease and this Exhibit, Tenant’s construction manager shall be provided with complete access to the Refusal Space prior to and during construction of the Leasehold Improvements.

such payment directly to Tenant.

Improvements; and

EXHIBIT C-2 INSURANCE REQUIREMENTS

$2,000,000 general aggregate covering bodily injury and property damage, $1,000,000 personal and advertising injury, and $2,000,000 products-completed operations aggregate, or the applicable limits of insurance shown in the declarations, whichever are greater. The commercial general liability insurance policy shall: (i) apply the general aggregate separately by an aggregate limit per project endorsement on ISO form ISO CG 25 03 05 09 or equivalent form; (ii) continuously be maintained for 10 years or the applicable statute of response, whichever is less; (iii) include a separation of insureds clause without any insured versus insured exclusion applicable to the Additional Insureds (as defined below); (iv) provide coverage for liability assumed under an “insured contract” (including tort liability of another assumed in a commercial contract) without any limiting modification or removal to the definition thereof, and the insured contract exception to the contractual liability and employer’s liability exclusions; (v) not contain any classification limitation endorsement, which limits or excludes coverage applicable to the Leasehold Improvements and/or operations related thereto or construction type contemplated by the Construction Contract; (vi) not contain any exclusion or limitation with respect to resulting or consequential property damage to or from “your work”; (vii) not contain any professional liability exclusion any broader than the CG 22 79; and (viii) if the Leasehold Improvements are located within 50 feet of a railroad, light rail, subway, or similar tracked conveyance, not contain any exclusion or limitation for coverage related thereto and include ISO endorsement CG 24 17 10 01 – Contractual Liability-Railroads or a substitute providing equivalent coverage. Landlord, Brandywine Realty Trust, any mortgagee(s), property managers, and any other associated or affiliated entities whose names have been furnished to Tenant as their interests appear, are collectively referred to in this Exhibit as “Additional Insureds”.

environmentally regulated substance that requires a regulated manifest, relating to the Leasehold Improvements and/or operations related thereto, the automobile liability insurance policy of the Contractor and/or subcontractor performing such operations must also include CA-9948 and MCS-90 endorsements.

$1,000,000 in the aggregate; (ii) the Contractor’s pollution liability insurance limits outlined in the Schedule of Coverage Limits below; or (iii) the limits carried by the Contractor and its subcontractors. This policy must include liability coverage for bodily injury and property damage, clean-up costs resulting from pollution conditions, as well as coverage for mold, accidental release of asbestos, and removal/transportation of underground storage tanks (if applicable to the Leasehold Improvements and/or operations related thereto). If the coverage required under this paragraph is written on a claims-made policy form, such coverage must apply with a retroactive date to reflect the date the commencement date of the Construction Contract, and continue in force by renewal or Extended Reporting Period provision for a minimum period equal to the greater of six years after Substantial Completion of the Leasehold Improvements and/or operations related thereto, or the period under which a claim can be asserted under the applicable statute of repose. Non-owned disposal site coverage for specified sites must be provided (by endorsement or its equivalent), if the Contractor or any subcontractor is disposing of hazardous material and/or waste(s).

$2,000,000 each occurrence and $2,000,000 in the aggregate; (ii) the Contractor’s professional liability insurance limits outlined in the Schedule of Coverage Limits below; or (iii) the limits carried by such Contractor and its subcontractors. Such policy must: (A) continue in force by renewal or Extended Reporting Period provision for a minimum period equal to the greater of six years after Substantial Completion of the Leasehold Improvements and/or operations related thereto or the period in which a claim can be asserted under the applicable statute of limitations and/or repose; (B) not contain any exclusion or limitation in the definition of covered professional services applicable to the Leasehold Improvements and/or operations related thereto, as contemplated by the Construction Contract; and (C) not contain a deductible or self-insured retention in excess of $50,000 per claim, payment of which will be the sole responsibility of the Contractor or subcontractor, as applicable.

Schedule of Coverage Limits