Norkunas Matthew — SEC Form 4 filings
SEC reporting owner CIK 1816836. 6 Form 4 filings on record with FilingPulse; latest filed 2026-08-05.
Transaction summary — filings shown
Covers all 6 filings on record, filed 2024-01-17 to 2026-08-05. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): none reported.
- Open-market sales (code S, non-derivative): none reported.
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 28.
By issuer — same filings
Open-market purchase/sale legs on non-derivative securities, grouped by issuer. Role is as filed on the newest filing for that issuer. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Issuer | Role (as filed) | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|---|
| Generation Bio Co. (GBIO) | CHIEF FINANCIAL OFFICER | 5 | — | — | 27 |
| Obsidian Therapeutics, Inc. (OBX) | Director | 1 | — | — | 1 |
Form 4 filings — Norkunas Matthew
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-08-05 | 4 | Obsidian Therapeutics, Inc. (OBX) | Grant/award (A): 37,653 (derivative) @ $0 | EDGAR |
| 2025-01-10 | 4 | Generation Bio Co. (GBIO) | Holdings only — no transactions reported | EDGAR |
| 2024-10-17 | 4 | Generation Bio Co. (GBIO) | Option exercise (M): 1,674 · Tax withholding (F): 492 @ $2.42 · Option exercise (M): 1,673 · Tax withholding (F): 492 @ $2.42 · Option exercise (M): 1,674 (derivative) @ $0 · Option exercise (M): 1,673 (derivative) @ $0 | EDGAR |
| 2024-07-17 | 4 | Generation Bio Co. (GBIO) | Option exercise (M): 1,674 · Tax withholding (F): 492 @ $2.93 · Option exercise (M): 1,673 · Tax withholding (F): 492 @ $2.93 · Option exercise (M): 1,674 (derivative) @ $0 · Option exercise (M): 1,673 (derivative) @ $0 | EDGAR |
| 2024-04-17 | 4 | Generation Bio Co. (GBIO) | Option exercise (M): 1,674 · Tax withholding (F): 492 @ $3.70 · Option exercise (M): 1,673 · Tax withholding (F): 492 @ $3.70 · Option exercise (M): 1,674 (derivative) @ $0 · Option exercise (M): 1,673 (derivative) @ $0 | EDGAR |
| 2024-01-17 | 4 | Generation Bio Co. (GBIO) | Option exercise (M): 7,437 · Tax withholding (F): 2,577 @ $1.91 · Option exercise (M): 6,694 · Tax withholding (F): 2,320 @ $1.91 · Option exercise (M): 1,674 · Tax withholding (F): 581 @ $1.91 · +3 more | EDGAR |
FilingPulse's Form 4 archive currently extends back to 2024-01-11 and is expanding backward through EDGAR history — earlier filings by this insider may not be indexed yet. Names and roles are shown as filed.
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