Mazumdar Claire — SEC Form 4 filings
SEC reporting owner CIK 2034671. 14 Form 4 filings on record with FilingPulse; latest filed 2026-08-12.
Transaction summary — filings shown
Covers all 14 filings on record, filed 2025-06-11 to 2026-08-12. 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): 17 legs across 10 filings — 200,000 shares, $4,057,146 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 41.
- Largest priced transaction: sale of 41,163 shares @ $18.86 ($776,429) in Bicara Therapeutics Inc., filed 2025-11-25.
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 |
|---|---|---|---|---|---|
| Bicara Therapeutics Inc. (BCAX) | Chief Executive Officer, Director | 12 | — | 17 legs · 200,000 sh · $4,057,146 | 39 |
| Relay Therapeutics, Inc. (RLAY) | Director | 2 | — | — | 2 |
Form 4 filings — Mazumdar Claire
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-08-12 | 4 | Bicara Therapeutics Inc. (BCAX) | Option exercise (M): 10,000 @ $3.79 · Sale (S): 10,000 @ $27.98 · Option exercise (M): 10,000 (derivative) @ $0 | EDGAR |
| 2026-07-14 | 4 | Bicara Therapeutics Inc. (BCAX) | Option exercise (M): 10,000 @ $3.79 · Sale (S): 9,972 @ $28.42 · Sale (S): 28 @ $29.68 · Option exercise (M): 10,000 (derivative) @ $0 | EDGAR |
| 2026-06-10 | 4 | Relay Therapeutics, Inc. (RLAY) | Grant/award (A): 32,947 (derivative) @ $0 | EDGAR |
| 2026-05-20 | 4 | Bicara Therapeutics Inc. (BCAX) | Option exercise (M): 15,000 @ $3.79 · Sale (S): 12,022 @ $19.96 · Sale (S): 2,978 @ $20.35 · Option exercise (M): 15,000 (derivative) @ $0 | EDGAR |
| 2026-04-20 | 4 | Bicara Therapeutics Inc. (BCAX) | Option exercise (M): 8,226 @ $4.44 · Option exercise (M): 7,454 @ $3.79 · Option exercise (M): 7,080 @ $5.45 · Option exercise (M): 15,000 @ $3.79 · Sale (S): 15,000 @ $23.61 · Option exercise (M): 8,226 (derivative) @ $0 · +3 more | EDGAR |
| 2026-03-20 | 4 | Bicara Therapeutics Inc. (BCAX) | Option exercise (M): 6,499 @ $3.79 · Sale (S): 6,499 @ $18.84 · Option exercise (M): 6,905 @ $3.79 · Sale (S): 6,905 @ $18.78 · Option exercise (M): 1,596 @ $3.79 · Sale (S): 1,596 @ $18.95 · +3 more | EDGAR |
| 2026-03-11 | 4 | Bicara Therapeutics Inc. (BCAX) | Option exercise (M): 36,766 @ $3.79 · Sale (S): 36,766 @ $19.17 · Option exercise (M): 36,766 (derivative) @ $0 | EDGAR |
| 2026-03-06 | 4 | Bicara Therapeutics Inc. (BCAX) | Option exercise (M): 2,631 @ $3.79 · Sale (S): 2,631 @ $18.73 · Option exercise (M): 1,786 @ $3.79 · Sale (S): 1,786 @ $18.74 · Option exercise (M): 3,817 @ $3.79 · Sale (S): 3,817 @ $18.75 · +3 more | EDGAR |
| 2026-02-04 | 4 | Bicara Therapeutics Inc. (BCAX) | Grant/award (A): 450,000 (derivative) @ $0 | EDGAR |
| 2025-12-18 | 4 | Bicara Therapeutics Inc. (BCAX) | Option exercise (M): 29,500 @ $5.45 · Option exercise (M): 29,500 (derivative) @ $0 | EDGAR |
| 2025-11-25 | 4 | Bicara Therapeutics Inc. (BCAX) | Option exercise (M): 41,163 @ $3.79 · Sale (S): 41,163 @ $18.86 · Option exercise (M): 41,163 (derivative) @ $0 | EDGAR |
| 2025-10-20 | 4 | Bicara Therapeutics Inc. (BCAX) | Option exercise (M): 24,103 @ $3.79 · Sale (S): 24,103 @ $18.83 · Option exercise (M): 24,103 (derivative) @ $0 | EDGAR |
| 2025-10-15 | 4 | Bicara Therapeutics Inc. (BCAX) | Option exercise (M): 11,445 @ $3.79 · Sale (S): 11,445 @ $18.92 · Option exercise (M): 13,289 @ $3.79 · Sale (S): 13,289 @ $18.84 · Option exercise (M): 11,445 (derivative) @ $0 · Option exercise (M): 13,289 (derivative) @ $0 | EDGAR |
| 2025-06-11 | 4 | Relay Therapeutics, Inc. (RLAY) | Grant/award (A): 421,241 (derivative) @ $0 | 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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