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person · Reporting owner

Norkunas Matthew

Disclosed activity across 2 companies

Tapewire entity
26265
SEC CIK
0001816836

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Obsidian Therapeutics, Inc.OBX · Entity 4898DirectorAugust 03, 2026August 05, 2026

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

Obsidian Therapeutics, Inc.

Report date August 03, 2026 · Filed August 05, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Stock Option (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $12.00 · Expires 2036-08-02Direct37,653 Reported balance After 2026-08-03 transaction · row 1 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 1 · 2026-08-03 · Grant · Acquired 37,653 · Balance 37,653

F1: The shares underlying this option shall vest and become exercisable upon the earlier of (i) the one-year anniversary of the grant date or (ii) the date of the Issuer's annual meeting of stockholders following the grant date, subject to the Reporting Person's continued service with the Issuer on such vesting date.

Filing footnotes · ownership attribution and instrument terms

F1: The shares underlying this option shall vest and become exercisable upon the earlier of (i) the one-year anniversary of the grant date or (ii) the date of the Issuer's annual meeting of stockholders following the grant date, subject to the Reporting Person's continued service with the Issuer on such vesting date.

Past disclosures · reporting ended (1)

No longer tracked through insider filings. These historical balances do not imply present ownership or a zero position.

Generation Bio Co.

Report date January 10, 2025 · Filed January 10, 2025

Section 16 reporting ended · disclosed 2025-01-10. Current position is not established by this disclosure.

No balance rows disclosed in this filing.

Transaction history

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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 dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
January 15, 2023 Filed Jan 18, 2023 21:57 UTC Generation Bio Co. GBIO · Entity 67174 Exercise / conversionCommon Stock 7,438 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-23-001078 · form4-01182023_090137.xml · nonDerivative · entry 1

Norkunas Matthew · CIK 0001816836 · CHIEF FINANCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,201

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 · price: Each restricted stock unit represents the right to receive one share of the company's common stock.

Read SEC document
October 15, 2022 Filed Oct 18, 2022 20:40 UTC Generation Bio Co. GBIO · Entity 67174 Exercise / conversionRestricted Stock Units · Derivative 7,438 $0.00 $0.00
Disclosure

SEC source: 0001415889-22-010644 · form4-10182022_011054.xml · derivative · entry 3

Norkunas Matthew · CIK 0001816836 · CHIEF FINANCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 37,186

Underlying: Common Stock · 7,438 shares

Expires not disclosed

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 · derivative.exercise_price: Each restricted stock unit represents the right to receive one share of the company's common stock.

F2 · derivative.exercise_date: On January 21, 2022, the reporting person was granted 59,500 restricted stock units. The shares underlying the restricted stock units vest over two years, with 25% of the shares vested on July 15, 2022 and the remaining shares vesting in equal quarterly installments thereafter.

F2 · derivative.expiration_date: On January 21, 2022, the reporting person was granted 59,500 restricted stock units. The shares underlying the restricted stock units vest over two years, with 25% of the shares vested on July 15, 2022 and the remaining shares vesting in equal quarterly installments thereafter.

Read SEC document
October 15, 2022 Filed Oct 18, 2022 20:40 UTC Generation Bio Co. GBIO · Entity 67174 Tax withholdingCommon Stock 2,184 $5.61 $12,252.24
Disclosure

SEC source: 0001415889-22-010644 · form4-10182022_011054.xml · nonDerivative · entry 2

Norkunas Matthew · CIK 0001816836 · CHIEF FINANCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,763

Read SEC document
October 15, 2022 Filed Oct 18, 2022 20:40 UTC Generation Bio Co. GBIO · Entity 67174 Exercise / conversionCommon Stock 7,438 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-22-010644 · form4-10182022_011054.xml · nonDerivative · entry 1

Norkunas Matthew · CIK 0001816836 · CHIEF FINANCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,947

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 · price: Each restricted stock unit represents the right to receive one share of the company's common stock.

Read SEC document
July 15, 2022 Filed Jul 19, 2022 20:16 UTC Generation Bio Co. GBIO · Entity 67174 Exercise / conversionRestricted Stock Units · Derivative 14,876 $0.00 $0.00
Disclosure

SEC source: 0001415889-22-007764 · form4-07192022_010715.xml · derivative · entry 3

Norkunas Matthew · CIK 0001816836 · CHIEF FINANCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 44,624

Underlying: Common Stock · 14,876 shares

Expires not disclosed

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 · derivative.exercise_price: Each restricted stock unit represents the right to receive one share of the company's common stock.

F2 · derivative.exercise_date: On January 21, 2022, the reporting person was granted 59,500 restricted stock units. The shares underlying the restricted stock units vest over two years, with 25% of the shares vesting on July 15, 2022 and the remaining shares vesting in equal quarterly installments thereafter.

F2 · derivative.expiration_date: On January 21, 2022, the reporting person was granted 59,500 restricted stock units. The shares underlying the restricted stock units vest over two years, with 25% of the shares vesting on July 15, 2022 and the remaining shares vesting in equal quarterly installments thereafter.

Read SEC document
July 15, 2022 Filed Jul 19, 2022 20:16 UTC Generation Bio Co. GBIO · Entity 67174 Tax withholdingCommon Stock 4,367 $7.18 $31,355.06
Disclosure

SEC source: 0001415889-22-007764 · form4-07192022_010715.xml · nonDerivative · entry 2

Norkunas Matthew · CIK 0001816836 · CHIEF FINANCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,509

Read SEC document
July 15, 2022 Filed Jul 19, 2022 20:16 UTC Generation Bio Co. GBIO · Entity 67174 Exercise / conversionCommon Stock 14,876 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-22-007764 · form4-07192022_010715.xml · nonDerivative · entry 1

Norkunas Matthew · CIK 0001816836 · CHIEF FINANCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,876

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 · price: Each restricted stock unit represents the right to receive one share of the company's common stock.

Read SEC document
January 21, 2022 Filed Jan 25, 2022 21:05 UTC Generation Bio Co. GBIO · Entity 67174 GrantRestricted Stock Units · Derivative 59,500 $0.00 $0.00
Disclosure

SEC source: 0001415889-22-000748 · form4-01252022_040114.xml · derivative · entry 2

Norkunas Matthew · CIK 0001816836 · CHIEF FINANCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 59,500

Underlying: Common Stock · 59,500 shares

Expires not disclosed

F2 · derivative.exercise_price: Each restricted stock unit represents the right to receive one share of the company's common stock.

F3 · derivative.exercise_date: The shares underlying the restricted stock units vest over two years, with 25% of the shares vesting on July 15, 2022 and the remaining shares vesting in equal quarterly installments thereafter.

F3 · derivative.expiration_date: The shares underlying the restricted stock units vest over two years, with 25% of the shares vesting on July 15, 2022 and the remaining shares vesting in equal quarterly installments thereafter.

Read SEC document
January 21, 2022 Filed Jan 25, 2022 21:05 UTC Generation Bio Co. GBIO · Entity 67174 GrantStock Option (right to buy) · Derivative 119,000 $0.00 Strike: $6.49 $0.00
Disclosure

SEC source: 0001415889-22-000748 · form4-01252022_040114.xml · derivative · entry 1

Norkunas Matthew · CIK 0001816836 · CHIEF FINANCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 119,000

Underlying: Common Stock · 119,000 shares

Expires 2032-01-21

F1 · derivative.exercise_date: This option was granted on January 21, 2022. The shares underlying the option vest over four years, with 25% of the shares vesting on January 21, 2023 and the remaining shares vesting in equal quarterly installments thereafter.

Read SEC document
February 03, 2021 Filed Feb 5, 2021 22:03 UTC Generation Bio Co. GBIO · Entity 67174 GrantStock Option (right to buy) · Derivative 6,100 $0.00 Strike: $30.73 $0.00
Disclosure

SEC source: 0001415889-21-000544 · form4-02052021_020215.xml · derivative · entry 2

Norkunas Matthew · CIK 0001816836 · CHIEF FINANCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,100

Underlying: Common Stock · 6,100 shares

Expires 2031-02-02

F2 · derivative.exercise_date: This option was granted on February 3, 2021. The shares underlying the option vest over four years, with 25% of the shares vesting on January 22, 2022 and the remaining shares vesting in equal quarterly installments thereafter.

Read SEC document
January 22, 2021 Filed Feb 5, 2021 22:03 UTC Generation Bio Co. GBIO · Entity 67174 GrantStock Option (right to buy) · Derivative 32,823 $0.00 Strike: $30.25 $0.00
Disclosure

SEC source: 0001415889-21-000544 · form4-02052021_020215.xml · derivative · entry 1

Norkunas Matthew · CIK 0001816836 · CHIEF FINANCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 32,823

Underlying: Common Stock · 32,823 shares

Expires 2031-01-21

F1 · derivative.exercise_date: This option was granted on January 22, 2021. The shares underlying the option vest over four years, with 25% of the shares vesting on January 22, 2022 and the remaining shares vesting in equal quarterly installments thereafter.

Read SEC document
July 22, 2020 Filed Jul 24, 2020 20:40 UTC Generation Bio Co. GBIO · Entity 67174 GrantStock Option (right to buy) · Derivative 330,000 $0.00 Strike: $21.41 $0.00
Disclosure

SEC source: 0000899243-20-020385 · doc4.xml · derivative · entry 1

Norkunas Matthew · CIK 0001816836 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 330,000

Underlying: Common Stock · 330,000 shares

Expires 2030-07-21

F1 · derivative.exercise_date: The option was granted on July 22, 2020. The shares underlying the option vest over four years, with 25% of the shares vesting on July 22, 2021 and the remaining shares vesting in equal quarterly installments thereafter.

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.