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Nasdaq · USD

STRO

SUTRO BIOPHARMA, INC.

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5797
SEC CIK
0001382101
Parsed reports
335

Last 12 months

Inside the activity.

0 purchase rows · 0 sale rows

Disclosed non-derivative P/S rows, by transaction month. Includes amendments and private transactions.
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MonthPurchasesSales
Nov 202500
Dec 202500
Jan 202600
Feb 202600
Mar 202600
Apr 202600
May 202600
Jun 202600
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Sep 202600
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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateOwner / reported roleActivity / securityShares / unitsReported priceReported valueDetails
September 18, 2026 Filed Sep 22, 2026 20:09 UTC
Gerber Hans-PeterCHIEF SCIENTIFIC OFFICER
Exercise / conversionRestricted Stock Units (RSUs) · Derivative 3,750 $0.00 $0.00
Disclosure

SEC source: 0001992979-26-000004 · form4-09222026_080918.xml · derivative · entry 3

Gerber Hans-Peter · CIK 0001992979 · CHIEF SCIENTIFIC OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,750

Underlying: Common Stock · 3,750 shares

Expires 2027-09-18

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each RSU represents a contingent right to receive one (1) share of the Issuer's Common Stock upon settlement.

F4 · derivative.exercise_date: The RSUs vested or vest as to 1/4 of the total award annually, with the first tranche vested on September 18, 2024, subject to the reporting person's continued service through each vesting date.

Read SEC document
September 18, 2026 Filed Sep 22, 2026 20:09 UTC
Gerber Hans-PeterCHIEF SCIENTIFIC OFFICER
Tax withholdingCommon Stock 1,345 $15.34 $20,632.30
Disclosure

SEC source: 0001992979-26-000004 · form4-09222026_080918.xml · nonDerivative · entry 2

Gerber Hans-Peter · CIK 0001992979 · CHIEF SCIENTIFIC OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,367

F2 · shares: Represents the number of shares of Common Stock that have been withheld by the Issuer to satisfy its income tax withholding and remittance obligations in connection with the net settlement of restricted stock units; does not represent a sale by the reporting person.

Read SEC document
September 18, 2026 Filed Sep 22, 2026 20:09 UTC
Gerber Hans-PeterCHIEF SCIENTIFIC OFFICER
Exercise / conversionCommon Stock 3,750 $0.00 $0.00
Disclosure

SEC source: 0001992979-26-000004 · form4-09222026_080918.xml · nonDerivative · entry 1

Gerber Hans-Peter · CIK 0001992979 · CHIEF SCIENTIFIC OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,712

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · balance_after: The reported total includes 444 shares of Common Stock acquired by the reporting person in one or more transactions with the Issuer pursuant to its Employee Stock Purchase Plan, which transactions are exempt pursuant to Rules 16a3(f)(1)(i)(B) and 16b3(c).

Read SEC document
June 05, 2026 Filed Jun 9, 2026 16:23 UTC GrantStock Option (right to buy) · Derivative 10,000 $0.00 Strike: $26.09 $0.00
Disclosure

SEC source: 0001294939-26-000002 · form4-06092026_080650.xml · derivative · entry 1

Petree Daniel H · CIK 0001294939 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,000

Underlying: Common Stock · 10,000 shares

Expires 2036-06-05

F1 · derivative.exercise_date: The option shall vest, subject to the reporting person's provision of service to the issuer on each vesting date, as to 8.33% of the total award monthly, with the first tranche vesting on July 5, 2026, and the award shall be fully vested and exercisable on the earlier of (i) the date of the issuer's 2027 annual stockholders meeting or (ii) June 5, 2027.

Read SEC document
June 05, 2026 Filed Jun 9, 2026 20:12 UTC GrantStock Option (right to buy) · Derivative 10,000 $0.00 Strike: $26.09 $0.00
Disclosure

SEC source: 0001236537-26-000002 · form4-06092026_080655.xml · derivative · entry 1

MATSUI CONNIE · CIK 0001236537 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,000

Underlying: Common Stock · 10,000 shares

Expires 2036-06-05

F1 · derivative.exercise_date: The option shall vest, subject to the reporting person's provision of service to the issuer on each vesting date, as to 8.33% of the total award monthly, with the first tranche vesting on July 5, 2026, and the award shall be fully vested and exercisable on the earlier of (i) the date of the issuer's 2027 annual stockholders meeting or (ii) June 5, 2027.

Read SEC document
June 05, 2026 Filed Jun 9, 2026 16:21 UTC GrantStock Option (right to buy) · Derivative 10,000 $0.00 Strike: $26.09 $0.00
Disclosure

SEC source: 0001217412-26-000002 · form4-06092026_080620.xml · derivative · entry 1

PANEK JAMES P · CIK 0001217412 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,000

Underlying: Common Stock · 10,000 shares

Expires 2036-06-05

F1 · derivative.exercise_date: The option shall vest, subject to the reporting person's provision of service to the issuer on each vesting date, as to 8.33% of the total award monthly, with the first tranche vesting on July 5, 2026, and the award shall be fully vested and exercisable on the earlier of (i) the date of the issuer's 2027 annual stockholders meeting or (ii) June 5, 2027.

Read SEC document
June 05, 2026 Filed Jun 9, 2026 20:24 UTC GrantStock Option (right to buy) · Derivative 10,000 $0.00 Strike: $26.09 $0.00
Disclosure

SEC source: 0001587487-26-000002 · form4-06092026_080649.xml · derivative · entry 1

Wigginton Jon Marc · CIK 0001587487 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,000

Underlying: Common Stock · 10,000 shares

Expires 2036-06-05

F1 · derivative.exercise_date: The option shall vest, subject to the reporting person's provision of service to the issuer on each vesting date, as to 8.33% of the total award monthly, with the first tranche vesting on July 5, 2026, and the award shall be fully vested and exercisable on the earlier of (i) the date of the issuer's 2027 annual stockholders meeting or (ii) June 5, 2027.

Read SEC document
June 05, 2026 Filed Jun 9, 2026 20:19 UTC GrantStock Option (right to buy) · Derivative 10,000 $0.00 Strike: $26.09 $0.00
Disclosure

SEC source: 0001536193-26-000002 · form4-06092026_080653.xml · derivative · entry 1

Lobacki Joseph M · CIK 0001536193 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,000

Underlying: Common Stock · 10,000 shares

Expires 2036-06-05

F1 · derivative.exercise_date: The option shall vest, subject to the reporting person's provision of service to the issuer on each vesting date, as to 8.33% of the total award monthly, with the first tranche vesting on July 5, 2026, and the award shall be fully vested and exercisable on the earlier of (i) the date of the issuer's 2027 annual stockholders meeting or (ii) June 5, 2027.

Read SEC document
June 05, 2026 Filed Jun 9, 2026 20:18 UTC
Jagpal SukhiDirector
GrantStock Option (right to buy) · Derivative 10,000 $0.00 Strike: $26.09 $0.00
Disclosure

SEC source: 0001554591-26-000002 · form4-06092026_080605.xml · derivative · entry 1

Jagpal Sukhi · CIK 0001554591 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,000

Underlying: Common Stock · 10,000 shares

Expires 2036-06-05

F1 · derivative.exercise_date: The option shall vest, subject to the reporting person's provision of service to the issuer on each vesting date, as to 8.33% of the total award monthly, with the first tranche vesting on July 5, 2026, and the award shall be fully vested and exercisable on the earlier of (i) the date of the issuer's 2027 annual stockholders meeting or (ii) June 5, 2027.

Read SEC document
June 05, 2026 Filed Jun 9, 2026 20:16 UTC
Hunter HeidiDirector
GrantStock Option (right to buy) · Derivative 10,000 $0.00 Strike: $26.09 $0.00
Disclosure

SEC source: 0001891841-26-000002 · form4-06092026_080631.xml · derivative · entry 1

Hunter Heidi · CIK 0001891841 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,000

Underlying: Common Stock · 10,000 shares

Expires 2036-06-05

F1 · derivative.exercise_date: The option shall vest, subject to the reporting person's provision of service to the issuer on each vesting date, as to 8.33% of the total award monthly, with the first tranche vesting on July 5, 2026, and the award shall be fully vested and exercisable on the earlier of (i) the date of the issuer's 2027 annual stockholders meeting or (ii) June 5, 2027.

Read SEC document
June 05, 2026 Filed Jun 9, 2026 20:14 UTC GrantStock Option (right to buy) · Derivative 10,000 $0.00 Strike: $26.09 $0.00
Disclosure

SEC source: 0001601264-26-000006 · form4-06092026_080646.xml · derivative · entry 1

Dybbs Michael · CIK 0001601264 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,000

Underlying: Common Stock · 10,000 shares

Expires 2036-06-05

F1 · derivative.exercise_date: The option shall vest, subject to the reporting person's provision of service to the issuer on each vesting date, as to 8.33% of the total award monthly, with the first tranche vesting on July 5, 2026, and the award shall be fully vested and exercisable on the earlier of (i) the date of the issuer's 2027 annual stockholders meeting or (ii) June 5, 2027.

Read SEC document
June 02, 2026 Filed Jun 2, 2026 20:16 UTC Exercise / conversionRestricted Stock Units (RSUs) · Derivative 2,500 $0.00 $0.00
Disclosure

SEC source: 0001761333-26-000005 · form4-06022026_080600.xml · derivative · entry 2

Chow Gregory K. · CIK 0001761333 · CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,500

Underlying: Common Stock · 2,500 shares

Expires 2029-06-02

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each RSU represents a contingent right to receive one (1) share of the Issuer's Common Stock upon settlement.

F4 · derivative.exercise_date: The award vested or vests annually as to 1/4th of the total award, subject to the reporting person's continued service to the Issuer on each vesting date, with the first tranche vested on June 2, 2026.

Read SEC document
June 02, 2026 Filed Jun 2, 2026 20:16 UTC Exercise / conversionCommon Stock 2,500 $0.00 $0.00
Disclosure

SEC source: 0001761333-26-000005 · form4-06022026_080600.xml · nonDerivative · entry 1

Chow Gregory K. · CIK 0001761333 · CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,725

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: For avoidance of doubt, the reporting person elected to satisfy tax withholding liabilities in cash in lieu of withholding shares.

F2 · balance_after: The reported total includes 250 shares of Common Stock acquired by the reporting person in one or more transactions with the Issuer pursuant to its employee stock purchase plan, which transactions are exempt pursuant to Rules 16a3(f)(1)(i)(B) and 16b3(c).

Read SEC document
March 04, 2026 Filed Mar 6, 2026 16:21 UTC
Chung JaneDirector · Chief Executive Officer
Exercise / conversionRestricted Stock Units (RSUs) · Derivative 788 $0.00 $0.00
Disclosure

SEC source: 0001872398-26-000003 · form4-03062026_090306.xml · derivative · entry 3

Chung Jane · CIK 0001872398 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 788 shares

Expires 2026-03-04

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each RSU represents a contingent right to receive one (1) share of the Issuer's Common Stock upon settlement.

F3 · derivative.exercise_date: The RSUs vested or vest as to 1/4 of the total award annually, with the first tranche vested on March 4, 2023, subject to continued service through each vesting date.

Read SEC document
March 04, 2026 Filed Mar 6, 2026 16:21 UTC
Chung JaneDirector · Chief Executive Officer
Tax withholdingCommon Stock 282 $21.31 $6,009.42
Disclosure

SEC source: 0001872398-26-000003 · form4-03062026_090306.xml · nonDerivative · entry 2

Chung Jane · CIK 0001872398 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,285

F1 · shares: Represents the number of shares of Common Stock that have been withheld by the Issuer to satisfy its income tax withholding and remittance obligations in connection with the net settlement of restricted stock units; does not represent a sale by the reporting person.

Read SEC document
March 04, 2026 Filed Mar 6, 2026 16:21 UTC
Chung JaneDirector · Chief Executive Officer
Exercise / conversionCommon Stock 788 $0.00 $0.00
Disclosure

SEC source: 0001872398-26-000003 · form4-03062026_090306.xml · nonDerivative · entry 1

Chung Jane · CIK 0001872398 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,567

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
March 04, 2026 Filed Mar 6, 2026 21:25 UTC
Pauling DavidChief Admin. Ofcr. & GC
Exercise / conversionRestricted Stock Units (RSUs) · Derivative 675 $0.00 $0.00
Disclosure

SEC source: 0002063633-26-000003 · form4-03062026_090355.xml · derivative · entry 3

Pauling David · CIK 0002063633 · Chief Admin. Ofcr. & GC

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 675 shares

Expires 2026-03-04

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each RSU represents a contingent right to receive one (1) share of the Issuer's Common Stock upon settlement.

F3 · derivative.exercise_date: The RSUs vested or vest as to 1/4 of the total award annually, with the first tranche vested on March 4, 2023, subject to continued service through each vesting date.

Read SEC document
March 04, 2026 Filed Mar 6, 2026 21:25 UTC
Pauling DavidChief Admin. Ofcr. & GC
Tax withholdingCommon Stock 277 $21.31 $5,902.87
Disclosure

SEC source: 0002063633-26-000003 · form4-03062026_090355.xml · nonDerivative · entry 2

Pauling David · CIK 0002063633 · Chief Admin. Ofcr. & GC

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,748

F1 · shares: Represents the number of shares of Common Stock that have been withheld by the Issuer to satisfy its income tax withholding and remittance obligations in connection with the net settlement of restricted stock units; does not represent a sale by the reporting person.

Read SEC document
March 04, 2026 Filed Mar 6, 2026 21:25 UTC
Pauling DavidChief Admin. Ofcr. & GC
Exercise / conversionCommon Stock 675 $0.00 $0.00
Disclosure

SEC source: 0002063633-26-000003 · form4-03062026_090355.xml · nonDerivative · entry 1

Pauling David · CIK 0002063633 · Chief Admin. Ofcr. & GC

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,025

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
March 02, 2026 Filed Mar 3, 2026 18:56 UTC
Gerber Hans-PeterCHIEF SCIENTIFIC OFFICER
GrantStock Option (right to buy) · Derivative 40,000 $0.00 Strike: $20.55 $0.00
Disclosure

SEC source: 0001992979-26-000002 · form4-03032026_110346.xml · derivative · entry 8

Gerber Hans-Peter · CIK 0001992979 · CHIEF SCIENTIFIC OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 40,000

Underlying: Common Stock · 40,000 shares

Expires 2036-03-02

F6 · derivative.exercise_date: 1/48 of the total option award shall vest monthly, subject to the reporting person's continued service through each vesting date, with the first tranche vesting on April 1, 2026.

Read SEC document
March 02, 2026 Filed Mar 3, 2026 18:56 UTC
Gerber Hans-PeterCHIEF SCIENTIFIC OFFICER
GrantRestricted Stock Units (RSUs) · Derivative 5,000 $0.00 $0.00
Disclosure

SEC source: 0001992979-26-000002 · form4-03032026_110346.xml · derivative · entry 7

Gerber Hans-Peter · CIK 0001992979 · CHIEF SCIENTIFIC OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,000

Underlying: Common Stock · 5,000 shares

Expires 2030-03-01

F2 · derivative.exercise_price: Each RSU represents a contingent right to receive one (1) share of the Issuer's Common Stock upon settlement.

F5 · derivative.exercise_date: The RSUs shall vest as to 1/4 of the total award annually, with the first tranche vesting on March 1, 2027, subject to continued service through each vesting date.

Read SEC document
March 02, 2026 Filed Mar 3, 2026 18:56 UTC
Gerber Hans-PeterCHIEF SCIENTIFIC OFFICER
Exercise / conversionRestricted Stock Units (RSUs) · Derivative 2,843 $0.00 $0.00
Disclosure

SEC source: 0001992979-26-000002 · form4-03032026_110346.xml · derivative · entry 6

Gerber Hans-Peter · CIK 0001992979 · CHIEF SCIENTIFIC OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,532

Underlying: Common Stock · 2,843 shares

Expires 2029-03-02

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each RSU represents a contingent right to receive one (1) share of the Issuer's Common Stock upon settlement.

F4 · derivative.exercise_date: The RSUs vested or vest as to 1/4 of the total award annually, with the first tranche vested on March 2, 2026, subject to continued service through each vesting date.

Read SEC document
March 02, 2026 Filed Mar 3, 2026 18:56 UTC
Gerber Hans-PeterCHIEF SCIENTIFIC OFFICER
Tax withholdingCommon Stock 1,170 $20.55 $24,043.50
Disclosure

SEC source: 0001992979-26-000002 · form4-03032026_110346.xml · nonDerivative · entry 4

Gerber Hans-Peter · CIK 0001992979 · CHIEF SCIENTIFIC OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,518

F1 · shares: Represents the number of shares of Common Stock that have been withheld by the Issuer to satisfy its income tax withholding and remittance obligations in connection with the net settlement of restricted stock units; does not represent a sale by the reporting person.

Read SEC document
March 02, 2026 Filed Mar 3, 2026 18:56 UTC
Gerber Hans-PeterCHIEF SCIENTIFIC OFFICER
Exercise / conversionCommon Stock 2,843 $0.00 $0.00
Disclosure

SEC source: 0001992979-26-000002 · form4-03032026_110346.xml · nonDerivative · entry 3

Gerber Hans-Peter · CIK 0001992979 · CHIEF SCIENTIFIC OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,688

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
March 02, 2026 Filed Mar 3, 2026 18:48 UTC
Chung JaneDirector · Chief Executive Officer
GrantStock Option (right to buy) · Derivative 175,000 $0.00 Strike: $20.55 $0.00
Disclosure

SEC source: 0001872398-26-000002 · form4-03032026_110347.xml · derivative · entry 10

Chung Jane · CIK 0001872398 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 175,000

Underlying: Common Stock · 175,000 shares

Expires 2036-03-02

F7 · derivative.exercise_date: 1/48 of the total option award shall vest monthly, subject to the reporting person's continued service through each vesting date, with the first tranche vesting on April 1, 2026.

Read SEC document
March 02, 2026 Filed Mar 3, 2026 18:48 UTC
Chung JaneDirector · Chief Executive Officer
GrantRestricted Stock Units (RSUs) · Derivative 40,000 $0.00 $0.00
Disclosure

SEC source: 0001872398-26-000002 · form4-03032026_110347.xml · derivative · entry 9

Chung Jane · CIK 0001872398 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 40,000

Underlying: Common Stock · 40,000 shares

Expires 2030-03-01

F2 · derivative.exercise_price: Each RSU represents a contingent right to receive one (1) share of the Issuer's Common Stock upon settlement.

F6 · derivative.exercise_date: The RSUs shall vest as to 1/4 of the total award annually, with the first tranche vesting on March 1, 2027, subject to continued service through each vesting date.

Read SEC document
March 02, 2026 Filed Mar 3, 2026 18:48 UTC
Chung JaneDirector · Chief Executive Officer
Exercise / conversionRestricted Stock Units (RSUs) · Derivative 7,750 $0.00 $0.00
Disclosure

SEC source: 0001872398-26-000002 · form4-03032026_110347.xml · derivative · entry 8

Chung Jane · CIK 0001872398 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,250

Underlying: Common Stock · 7,750 shares

Expires 2029-03-02

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each RSU represents a contingent right to receive one (1) share of the Issuer's Common Stock upon settlement.

F5 · derivative.exercise_date: The RSUs vested or vest as to 1/4 of the total award annually, with the first tranche vested on March 2, 2026, subject to continued service through each vesting date.

Read SEC document
March 02, 2026 Filed Mar 3, 2026 18:48 UTC
Chung JaneDirector · Chief Executive Officer
Tax withholdingCommon Stock 2,779 $20.55 $57,108.45
Disclosure

SEC source: 0001872398-26-000002 · form4-03032026_110347.xml · nonDerivative · entry 5

Chung Jane · CIK 0001872398 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,779

F1 · shares: Represents the number of shares of Common Stock that have been withheld by the Issuer to satisfy its income tax withholding and remittance obligations in connection with the net settlement of restricted stock units; does not represent a sale by the reporting person.

Read SEC document
March 02, 2026 Filed Mar 3, 2026 18:48 UTC
Chung JaneDirector · Chief Executive Officer
Exercise / conversionCommon Stock 7,750 $0.00 $0.00
Disclosure

SEC source: 0001872398-26-000002 · form4-03032026_110347.xml · nonDerivative · entry 4

Chung Jane · CIK 0001872398 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,558

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
March 02, 2026 Filed Mar 3, 2026 23:59 UTC
Pauling DavidChief Admin. Ofcr. & GC
GrantStock Option (right to buy) · Derivative 33,600 $0.00 Strike: $20.55 $0.00
Disclosure

SEC source: 0002063633-26-000002 · form4-03032026_110346.xml · derivative · entry 10

Pauling David · CIK 0002063633 · Chief Admin. Ofcr. & GC

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,600

Underlying: Common Stock · 33,600 shares

Expires 2036-03-02

F7 · derivative.exercise_date: 1/48 of the total option award shall vest monthly, subject to the reporting person's continued service to the Issuer on each vesting date, with the first tranche vesting on April 1, 2026.

Read SEC document
March 02, 2026 Filed Mar 3, 2026 23:59 UTC
Pauling DavidChief Admin. Ofcr. & GC
GrantRestricted Stock Units (RSUs) · Derivative 4,200 $0.00 $0.00
Disclosure

SEC source: 0002063633-26-000002 · form4-03032026_110346.xml · derivative · entry 9

Pauling David · CIK 0002063633 · Chief Admin. Ofcr. & GC

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,200

Underlying: Common Stock · 4,200 shares

Expires 2030-03-01

F2 · derivative.exercise_price: Each RSU represents a contingent right to receive one (1) share of the Issuer's Common Stock upon settlement.

F6 · derivative.exercise_date: The RSUs shall vest as to 1/4 of the total award annually, with the first tranche vesting on March 1, 2027, subject to continued service through each vesting date.

Read SEC document
March 02, 2026 Filed Mar 3, 2026 23:59 UTC
Pauling DavidChief Admin. Ofcr. & GC
Exercise / conversionRestricted Stock Units (RSUs) · Derivative 2,356 $0.00 $0.00
Disclosure

SEC source: 0002063633-26-000002 · form4-03032026_110346.xml · derivative · entry 8

Pauling David · CIK 0002063633 · Chief Admin. Ofcr. & GC

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,069

Underlying: Common Stock · 2,356 shares

Expires 2029-03-02

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each RSU represents a contingent right to receive one (1) share of the Issuer's Common Stock upon settlement.

F5 · derivative.exercise_date: The RSUs vested or vest as to 1/4 of the total award annually, with the first tranche vested on March 2, 2026, subject to continued service through each vesting date.

Read SEC document
March 02, 2026 Filed Mar 3, 2026 23:59 UTC
Pauling DavidChief Admin. Ofcr. & GC
Tax withholdingCommon Stock 970 $20.55 $19,933.50
Disclosure

SEC source: 0002063633-26-000002 · form4-03032026_110346.xml · nonDerivative · entry 5

Pauling David · CIK 0002063633 · Chief Admin. Ofcr. & GC

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,350

F1 · shares: Represents the number of shares of Common Stock that have been withheld by the Issuer to satisfy its income tax withholding and remittance obligations in connection with the net settlement of RSUs; does not represent a sale by the reporting person.

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March 02, 2026 Filed Mar 3, 2026 23:59 UTC
Pauling DavidChief Admin. Ofcr. & GC
Exercise / conversionCommon Stock 2,356 $0.00 $0.00
Disclosure

SEC source: 0002063633-26-000002 · form4-03032026_110346.xml · nonDerivative · entry 4

Pauling David · CIK 0002063633 · Chief Admin. Ofcr. & GC

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,320

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

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March 02, 2026 Filed Mar 3, 2026 23:51 UTC GrantRestricted Stock Units (RSUs) · Derivative 5,000 $0.00 $0.00
Disclosure

SEC source: 0001761333-26-000002 · form4-03032026_110348.xml · derivative · entry 2

Chow Gregory K. · CIK 0001761333 · CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,000

Underlying: Common Stock · 5,000 shares

Expires 2030-03-01

F2 · derivative.exercise_price: Each RSU represents a contingent right to receive one (1) share of the Issuer's Common Stock upon settlement.

F3 · derivative.exercise_date: The RSUs shall vest as to 1/4 of the total award annually, with the first tranche vesting on March 1, 2027, subject to continued service through each vesting date.

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March 02, 2026 Filed Mar 3, 2026 23:51 UTC GrantStock Option (right to buy) · Derivative 40,000 $0.00 Strike: $20.55 $0.00
Disclosure

SEC source: 0001761333-26-000002 · form4-03032026_110348.xml · derivative · entry 1

Chow Gregory K. · CIK 0001761333 · CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 40,000

Underlying: Common Stock · 40,000 shares

Expires 2036-03-02

F1 · derivative.exercise_date: 1/48 of the total option award shall vest monthly, subject to the reporting person's continued service through each vesting date, with the first tranche vesting on April 1, 2026.

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March 01, 2026 Filed Mar 3, 2026 18:56 UTC
Gerber Hans-PeterCHIEF SCIENTIFIC OFFICER
Exercise / conversionRestricted Stock Units (RSUs) · Derivative 1,125 $0.00 $0.00
Disclosure

SEC source: 0001992979-26-000002 · form4-03032026_110346.xml · derivative · entry 5

Gerber Hans-Peter · CIK 0001992979 · CHIEF SCIENTIFIC OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,250

Underlying: Common Stock · 1,125 shares

Expires 2028-03-01

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each RSU represents a contingent right to receive one (1) share of the Issuer's Common Stock upon settlement.

F3 · derivative.exercise_date: The RSUs vested or vest as to 1/4 of the total award annually, with the first tranche vested on March 1, 2025, subject to continued service through each vesting date.

Read SEC document
March 01, 2026 Filed Mar 3, 2026 18:56 UTC
Gerber Hans-PeterCHIEF SCIENTIFIC OFFICER
Tax withholdingCommon Stock 463 $20.47 $9,477.61
Disclosure

SEC source: 0001992979-26-000002 · form4-03032026_110346.xml · nonDerivative · entry 2

Gerber Hans-Peter · CIK 0001992979 · CHIEF SCIENTIFIC OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,845

F1 · shares: Represents the number of shares of Common Stock that have been withheld by the Issuer to satisfy its income tax withholding and remittance obligations in connection with the net settlement of restricted stock units; does not represent a sale by the reporting person.

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March 01, 2026 Filed Mar 3, 2026 18:56 UTC
Gerber Hans-PeterCHIEF SCIENTIFIC OFFICER
Exercise / conversionCommon Stock 1,125 $0.00 $0.00
Disclosure

SEC source: 0001992979-26-000002 · form4-03032026_110346.xml · nonDerivative · entry 1

Gerber Hans-Peter · CIK 0001992979 · CHIEF SCIENTIFIC OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,308

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
March 01, 2026 Filed Mar 3, 2026 18:48 UTC
Chung JaneDirector · Chief Executive Officer
Exercise / conversionRestricted Stock Units (RSUs) · Derivative 2,500 $0.00 $0.00
Disclosure

SEC source: 0001872398-26-000002 · form4-03032026_110347.xml · derivative · entry 7

Chung Jane · CIK 0001872398 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,000

Underlying: Common Stock · 2,500 shares

Expires 2028-03-01

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each RSU represents a contingent right to receive one (1) share of the Issuer's Common Stock upon settlement.

F4 · derivative.exercise_date: The RSUs vested or vest as to 1/4 of the total award annually, with the first tranche vested on March 1, 2025, subject to continued service through each vesting date.

Read SEC document
March 01, 2026 Filed Mar 3, 2026 18:48 UTC
Chung JaneDirector · Chief Executive Officer
Exercise / conversionRestricted Stock Units (RSUs) · Derivative 688 $0.00 $0.00
Disclosure

SEC source: 0001872398-26-000002 · form4-03032026_110347.xml · derivative · entry 6

Chung Jane · CIK 0001872398 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 688

Underlying: Common Stock · 688 shares

Expires 2027-03-01

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each RSU represents a contingent right to receive one (1) share of the Issuer's Common Stock upon settlement.

F3 · derivative.exercise_date: The RSUs vested or vest as to 1/4 of the total award annually, with the first tranche vested on March 1, 2024, subject to continued service through each vesting date.

Read SEC document
March 01, 2026 Filed Mar 3, 2026 18:48 UTC
Chung JaneDirector · Chief Executive Officer
Tax withholdingCommon Stock 1,271 $20.47 $26,017.37
Disclosure

SEC source: 0001872398-26-000002 · form4-03032026_110347.xml · nonDerivative · entry 3

Chung Jane · CIK 0001872398 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,808

F1 · shares: Represents the number of shares of Common Stock that have been withheld by the Issuer to satisfy its income tax withholding and remittance obligations in connection with the net settlement of restricted stock units; does not represent a sale by the reporting person.

Read SEC document
March 01, 2026 Filed Mar 3, 2026 18:48 UTC
Chung JaneDirector · Chief Executive Officer
Exercise / conversionCommon Stock 2,500 $0.00 $0.00
Disclosure

SEC source: 0001872398-26-000002 · form4-03032026_110347.xml · nonDerivative · entry 2

Chung Jane · CIK 0001872398 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,079

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
March 01, 2026 Filed Mar 3, 2026 18:48 UTC
Chung JaneDirector · Chief Executive Officer
Exercise / conversionCommon Stock 688 $0.00 $0.00
Disclosure

SEC source: 0001872398-26-000002 · form4-03032026_110347.xml · nonDerivative · entry 1

Chung Jane · CIK 0001872398 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,579

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
March 01, 2026 Filed Mar 3, 2026 23:59 UTC
Pauling DavidChief Admin. Ofcr. & GC
Exercise / conversionRestricted Stock Units (RSUs) · Derivative 842 $0.00 $0.00
Disclosure

SEC source: 0002063633-26-000002 · form4-03032026_110346.xml · derivative · entry 7

Pauling David · CIK 0002063633 · Chief Admin. Ofcr. & GC

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,686

Underlying: Common Stock · 842 shares

Expires 2028-03-01

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each RSU represents a contingent right to receive one (1) share of the Issuer's Common Stock upon settlement.

F4 · derivative.exercise_date: The RSUs vested or vest as to 1/4 of the total award annually, with the first tranche vested on March 1, 2025, subject to continued service through each vesting date.

Read SEC document
March 01, 2026 Filed Mar 3, 2026 23:59 UTC
Pauling DavidChief Admin. Ofcr. & GC
Exercise / conversionRestricted Stock Units (RSUs) · Derivative 500 $0.00 $0.00
Disclosure

SEC source: 0002063633-26-000002 · form4-03032026_110346.xml · derivative · entry 6

Pauling David · CIK 0002063633 · Chief Admin. Ofcr. & GC

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 500

Underlying: Common Stock · 500 shares

Expires 2027-03-01

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each RSU represents a contingent right to receive one (1) share of the Issuer's Common Stock upon settlement.

F3 · derivative.exercise_date: The RSUs vested or vest as to 1/4 of the total award annually, with the first tranche vested on March 1, 2024, subject to continued service through each vesting date.

Read SEC document
March 01, 2026 Filed Mar 3, 2026 23:59 UTC
Pauling DavidChief Admin. Ofcr. & GC
Tax withholdingCommon Stock 551 $20.47 $11,278.97
Disclosure

SEC source: 0002063633-26-000002 · form4-03032026_110346.xml · nonDerivative · entry 3

Pauling David · CIK 0002063633 · Chief Admin. Ofcr. & GC

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,964

F1 · shares: Represents the number of shares of Common Stock that have been withheld by the Issuer to satisfy its income tax withholding and remittance obligations in connection with the net settlement of RSUs; does not represent a sale by the reporting person.

Read SEC document
March 01, 2026 Filed Mar 3, 2026 23:59 UTC
Pauling DavidChief Admin. Ofcr. & GC
Exercise / conversionCommon Stock 842 $0.00 $0.00
Disclosure

SEC source: 0002063633-26-000002 · form4-03032026_110346.xml · nonDerivative · entry 2

Pauling David · CIK 0002063633 · Chief Admin. Ofcr. & GC

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,515

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
March 01, 2026 Filed Mar 3, 2026 23:59 UTC
Pauling DavidChief Admin. Ofcr. & GC
Exercise / conversionCommon Stock 500 $0.00 $0.00
Disclosure

SEC source: 0002063633-26-000002 · form4-03032026_110346.xml · nonDerivative · entry 1

Pauling David · CIK 0002063633 · Chief Admin. Ofcr. & GC

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,673

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
December 23, 2025 Filed Dec 29, 2025 16:49 UTC
Gerber Hans-PeterCHIEF SCIENTIFIC OFFICER
GrantStock Option (right to buy) · Derivative 7,925 $0.00 Strike: $10.38 $0.00
Disclosure

SEC source: 0001992979-25-000006 · form4-12292025_091224.xml · derivative · entry 1

Gerber Hans-Peter · CIK 0001992979 · CHIEF SCIENTIFIC OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,925

Underlying: Common Stock · 7,925 shares

Expires 2035-12-23

F1 · derivative.exercise_date: 1/48 of the total option award shall vest monthly, subject to the reporting person's continued service to the issuer on each vesting date, with the first tranche vesting on January 23, 2026.

Read SEC document

Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.