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        |  | 
                Proposal 1:
               |  |  | To elect two directors to serve as Class I directors for a three-year term. |  | 
|  | 
                Proposal 2:
               |  |  | To consider and vote upon the ratification of the appointment of RSM US LLP as our independent registered public accounting firm for the year ending December 31, 2022. |  | 
| 
                Name 
               |  |  | 
                Class 
               |  |  | 
                Age 
               |  |  | 
                Position 
               |  |  | 
                Director
                 Since |  |  | 
                Current
                 Term Expires |  |  | 
                Expiration
                 of Term For Which Nominated |  | 
| Nominees for Director |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| 
                Matthew Winkler, Ph.D.(1)(2)(4)
               |  |  | 
                I 
               |  |  | 
                69 
               |  |  | Director |  |  | 
                2017 
               |  |  | 
                2022 
               |  |  | 
                2025 
               |  | 
| 
                Garry Nolan, Ph.D.(3)(4)
               |  |  | 
                I 
               |  |  | 
                61 
               |  |  | Director |  |  | 
                2015 
               |  |  | 
                2022 
               |  |  | 
                2025 
               |  | 
| Directors |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| 
                Brian McKelligon 
               |  |  | 
                II 
               |  |  | 
                53 
               |  |  | Chief Executive Officer, President, and Director |  |  | 
                2017 
               |  |  | 
                2023 
               |  |  | 
                —
               |  | 
| 
                Myla Lai-Goldman, M.D.(1)(2)(4)
               |  |  | 
                II 
               |  |  | 
                64 
               |  |  | Director |  |  | 
                2021 
               |  |  | 
                2023 
               |  |  | 
                —
               |  | 
| 
                Thomas Raffin, M.D. 
               |  |  | 
                II 
               |  |  | 
                75 
               |  |  | Director |  |  | 
                2015 
               |  |  | 
                2023 
               |  |  | 
                —
               |  | 
| 
                Thomas Schnettler(3)
               |  |  | 
                III 
               |  |  | 
                65 
               |  |  | Director |  |  | 
                2019 
               |  |  | 
                2024 
               |  |  | 
                —
               |  | 
| 
                Robert Shepler 
               |  |  | 
                III 
               |  |  | 
                65 
               |  |  | Chairman |  |  | 
                2015 
               |  |  | 
                2024 
               |  |  | 
                —
               |  | 
| 
                Scott Mendel(1)(2)(3)
               |  |  | 
                III 
               |  |  | 
                55 
               |  |  | Director |  |  | 
                2021 
               |  |  | 
                2024 
               |  |  | 
                —
               |  | 
| 
                Name 
               |  |  | 
                Cash
                 Compensation(1) |  |  | 
                Option
                 Grants(2) |  |  | 
                Total 
               |  | |||||||||
| 
                Matthew Winkler, Ph.D. 
               |  |  |  | $ | 28,750 |  |  |  |  | $ | 169,991 |  |  |  |  | $ | 198,741 |  |  | 
| 
                Garry Nolan, Ph.D. 
               |  |  |  | $ | 22,500 |  |  |  |  | $ | 169,991 |  |  |  |  | $ | 192,491 |  |  | 
| 
                Myla Lai-Goldman, M.D. 
               |  |  |  | $ | 10,000 |  |  |  |  | $ | 339,997 |  |  |  |  | $ | 349,997 |  |  | 
| 
                Thomas Raffin, M.D. 
               |  |  |  | $ | 27,500 |  |  |  |  | $ | 169,991 |  |  |  |  | $ | 197,491 |  |  | 
| 
                Thomas Schnettler 
               |  |  |  | $ | 30,000 |  |  |  |  | $ | 169,991 |  |  |  |  | $ | 199,991 |  |  | 
| 
                Robert Shepler 
               |  |  |  | $ | 42,500 |  |  |  |  | $ | 169,991 |  |  |  |  | $ | 212,491 |  |  | 
| 
                Scott Mendel 
               |  |  |  | $ | 33,750 |  |  |  |  | $ | 339,994 |  |  |  |  | $ | 373,744 |  |  | 
| 
                Position 
               |  |  | 
                Annual Retainer 
               |  | |||
| 
                Board Membership 
               |  |  |  | $ | 40,000 |  |  | 
| 
                Non-Executive Chair of the Board 
               |  |  |  | $ | 40,000 |  |  | 
| 
                Chair of Audit Committee 
               |  |  |  | $ | 20,000 |  |  | 
| 
                Chair of the Compensation Committee 
               |  |  |  | $ | 15,000 |  |  | 
| 
                Chair of the Nominating and Corporate Governance Committee 
               |  |  |  | $ | 10,000 |  |  | 
| 
                Chair of the Innovation and Technology Committee 
               |  |  |  | $ | 10,000 |  |  | 
| 
                Audit Committee Members other than Chair 
               |  |  |  | $ | 10,000 |  |  | 
| 
                Compensation Committee Members other than Chair 
               |  |  |  | $ | 7,500 |  |  | 
| 
                Nominating and Corporate Governance Committee Members other than Chair 
               |  |  |  | $ | 5,000 |  |  | 
| 
                Innovation and Technology Committee Members other than Chair 
               |  |  |  | $ | 5,000 |  |  | 
|  |  |  | 
                2021 
               |  |  | 
                2020 
               |  | ||||||
| 
                Audit Fees(1)
               |  |  |  | $ | 295,897 |  |  |  |  | $ | 173,250 |  |  | 
| 
                Audit Related Fees(2)
               |  |  |  |  | 433,125 |  |  |  |  | $ | — |  |  | 
| 
                Tax Fees(3)
               |  |  |  |  | 84,158 |  |  |  |  |  | 36,288 |  |  | 
| 
                All Other Fees 
               |  |  |  |  | — |  |  |  |  |  | — |  |  | 
| 
                Total
               |  |  |  | $ | 813,180 |  |  |  |  | $ | 209,538 |  |  | 
| 
                Name and Address of Beneficial Owner(1)
               |  |  | 
                Number of Shares 
                 Beneficially Owned |  |  | 
                Percentage of 
                 Shares Beneficially Owned(2) |  | ||||||
| 5% and Greater Stockholders |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| 
                Entities affiliated with Telegraph Hill Partners(3)
               |  |  |  |  | 15,675,247 |  |  |  |  |  | 41.8% |  |  | 
| 
                PSC Capital Partners LLC(4)
               |  |  |  |  | 2,813,771 |  |  |  |  |  | 7.5% |  |  | 
| 
                Entities affiliated with Hudson Executive Capital LP(5)
               |  |  |  |  | 2,080,543 |  |  |  |  |  | 5.5% |  |  | 
| Named Executive Officers and Directors |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| 
                Brian McKelligon(6)
               |  |  |  |  | 843,825 |  |  |  |  |  | 2.3% |  |  | 
| 
                Joseph Driscoll(7)
               |  |  |  |  | 419,263 |  |  |  |  |  | 1.1% |  |  | 
| 
                Frederic Pla, Ph.D. (8)
               |  |  |  |  | 106,405 |  |  |  |  |  | * |  |  | 
| 
                Matthew Winkler, Ph.D. (9)
               |  |  |  |  | 797,985 |  |  |  |  |  | 2.1% |  |  | 
| 
                Garry Nolan, Ph.D.(10)
               |  |  |  |  | 686,250 |  |  |  |  |  | 1.8% |  |  | 
| 
                Myla Lai-Goldman, M.D. 
               |  |  |  |  | — |  |  |  |  |  | — |  |  | 
| 
                Thomas Raffin, M.D. (11)
               |  |  |  |  | 230,952 |  |  |  |  |  | * |  |  | 
| 
                Thomas Schnettler(12)
               |  |  |  |  | 16,860 |  |  |  |  |  | * |  |  | 
| 
                Robert Shepler(13)
               |  |  |  |  | 266,452 |  |  |  |  |  | * |  |  | 
| 
                Scott Mendel 
               |  |  |  |  | 8,500 |  |  |  |  |  | * |  |  | 
| 
                All executive officers and directors as a group (13 persons) 
               |  |  |  |  | 3,455,176 |  |  |  |  |  | 9.2% |  |  | 
| 
                Name 
               |  |  | 
                Age 
               |  |  | 
                Position(s) 
               |  | 
| Brian McKelligon |  |  | 
                53 
               |  |  | President and Chief Executive Officer and Director |  | 
| Joseph Driscoll |  |  | 
                57 
               |  |  | Chief Financial Officer |  | 
| Niro Ramachandran, Ph.D. |  |  | 
                47 
               |  |  | Chief Business Officer |  | 
| Frederic Pla, Ph.D. |  |  | 
                63 
               |  |  | Chief Operating Officer |  | 
| Marilee Moy |  |  | 
                63 
               |  |  | Chief People Officer |  | 
| Ehab El-Gabry |  |  | 
                54 
               |  |  | Chief Medical Officer |  | 
| 
                Name and principal position 
               |  |  | 
                Year 
               |  |  | 
                Salary
                 ($) |  |  | 
                Option
                 awards ($)(1) |  |  | 
                Non-Equity
                 Incentive Plan Compensation ($) |  |  | 
                All other
                 compensation ($) |  |  | 
                Total
                 ($) |  | ||||||||||||||||||
| 
                Brian McKelligon 
                 Chief Executive Officer |  |  |  |  | 2021 |  |  |  |  |  | 393,333 |  |  |  |  |  | 1,700,389 |  |  |  |  |  | 173,599 |  |  |  |  |  | — |  |  |  |  |  | 2,267,321 |  |  | 
|  |  |  | 2020 |  |  |  |  |  | 350,000 |  |  |  |  |  | 108,498 |  |  |  |  |  | 57,750 |  |  |  |  |  | — |  |  |  |  |  | 516,248 |  |  | ||
| 
                Joseph Driscoll 
                 Chief Financial Officer |  |  |  |  | 2021 |  |  |  |  |  | 334,873 |  |  |  |  |  | — |  |  |  |  |  | 133,110 |  |  |  |  |  | — |  |  |  |  |  | 467,983 |  |  | 
|  |  |  | 2020 |  |  |  |  |  | 308,605 |  |  |  |  |  | 66,162 |  |  |  |  |  | 56,012 |  |  |  |  |  | — |  |  |  |  |  | 430,779 |  |  | ||
| 
                Frederic Pla 
                 Chief Operating Officer |  |  |  |  | 2021 |  |  |  |  |  | 269,861(2) |  |  |  |  |  | 2,888,280 |  |  |  |  |  | 121,438 |  |  |  |  |  | — |  |  |  |  |  | 3,279,579 |  |  | 
| 
                Name 
               |  |  | 
                Grant Date 
               |  |  | 
                Option Awards(1)
               |  | ||||||||||||||||||||||||
|  | 
                Number of
                 Securities Underlying Unexercised Options (#) Exercisable |  |  | 
                Number of
                 Securities Underlying Unexercised Options (#) Unexercisable |  |  | 
                Options
                 Exercise Price ($)(2) |  |  | 
                Option
                 Expiration Date |  | ||||||||||||||||||||
| 
                Brian McKelligon 
               |  |  |  |  | 11/09/2017(3) |  |  |  |  |  | 353,129 |  |  |  |  |  | — |  |  |  |  |  | 0.30 |  |  |  |  |  | 11/09/2027 |  |  | 
|  |  |  | 11/09/2017(4) |  |  |  |  |  | 117,709 |  |  |  |  |  | — |  |  |  |  |  | 0.30 |  |  |  |  |  | 11/09/2027 |  |  | ||
|  |  |  | 05/02/2019(5) |  |  |  |  |  | 201,758 |  |  |  |  |  | 46,560 |  |  |  |  |  | 0.44 |  |  |  |  |  | 05/02/2029 |  |  | ||
|  |  |  | 05/02/2019(4) |  |  |  |  |  | 82,772 |  |  |  |  |  | — |  |  |  |  |  | 0.44 |  |  |  |  |  | 05/02/2029 |  |  | ||
|  |  |  | 03/24/2021(6) |  |  |  |  |  | — |  |  |  |  |  | 214,592 |  |  |  |  |  | 16.12 |  |  |  |  |  | 03/24/2031 |  |  | ||
| 
                Joseph Driscoll 
               |  |  |  |  | 05/02/2019(5) |  |  |  |  |  | 248,158 |  |  |  |  |  | 112,800 |  |  |  |  |  | 0.44 |  |  |  |  |  | 05/02/2029 |  |  | 
|  |  |  | 05/02/2019(4) |  |  |  |  |  | 133,505 |  |  |  |  |  | — |  |  |  |  |  | 0.44 |  |  |  |  |  | 05/02/2029 |  |  | ||
| Frederic Pla |  |  |  |  | 3/24/2021(7) |  |  |  |  |  | — |  |  |  |  |  | 364,806 |  |  |  |  |  | 16.12 |  |  |  |  |  | 03/24/2031 |  |  | 
| 
                Plan category 
               |  |  | 
                Number of 
                 securities to be issued upon exercise of outstanding options, warrants and rights(1) |  |  | 
                Weighted-average 
                 exercise price of outstanding options, warrants and rights |  |  | 
                Number of 
                 securities remaining available for future issuance under equity compensation plans (excluding securities reflected in column (a)(2)) |  | |||||||||
|  |  |  | 
                (a)
               |  |  | 
                (b)
               |  |  | 
                (c)
               |  | |||||||||
| 
                Equity compensation plans approved by security holders 
               |  |  |  |  | 5,727,747 |  |  |  |  | $ | 7.29 |  |  |  |  |  | 1,154,266 |  |  | 
| 
                Equity compensation plans not approved by security holders 
               |  |  |  |  | — |  |  |  |  |  | — |  |  |  |  |  | — |  |  | 
| 
                Total 
               |  |  |  |  | 5,727,747 |  |  |  |  |  |  |  |  |  |  |  | 1,154,266 |  |  | 
| 
                Director 
               |  |  | 
                Principal stockholder 
               |  | 
| Thomas Raffin |  |  | Funds affiliated with Telegraph Hill Partners |  | 
| Thomas P. Schnettler |  |  | Piper Sandler Merchant Banking Fund II, L.P. |  | 
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