Biomea Fusion, Inc. — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| Erdtmann Rainer M | See Remarks | Purchase | 30,000 | $1.43 | $42,900 | 723,027 | Dec 11, 2025 |
| Hitchcock Michael J.M. | Interim CEO | Purchase | 100,000 | $0.99 | $99,000 | 115,000 | Dec 2, 2025 |
| Erdtmann Rainer M | See Remarks | Purchase | 40,000 | $1.10 | $44,000 | 683,027 | Dec 1, 2025 |
| Erdtmann Rainer M | See Remarks | Gift | 10,000 | — | — | 643,027 | Jan 31, 2025 |
| Valle Franco | Chief Financial Officer | Award / Grant | 495 | $6.15 | $3,044 | 42,995 | Nov 30, 2024 |
| Hitchcock Michael J.M. | — | Purchase | 10,000 | $10.06 | $100,600 | 15,000 | Sep 30, 2024 |
| Valle Franco | Chief Financial Officer | Purchase | 12,509 | $4.43 | $55,415 | 42,500 | May 31, 2024 |
| Frias Juan Pablo | Chief Medical Officer | Award / Grant | 349 | $8.94 | $3,120 | 349 | May 31, 2024 |
| Erdtmann Rainer M | President and COO | Gift | 3,000 | — | — | 10,000 | Dec 29, 2023 |
| Valle Franco | Chief Financial Officer | Award / Grant | 1,345 | $3.78 | $5,084 | 25,543 | Nov 30, 2023 |
| A2A Pharmaceuticals, Inc. | — | Sale | 75,000 | $33.81 | $2,535,750 | 3,550,000 | Jun 1, 2023 |
| Valle Franco | Chief Financial Officer | Award / Grant | 4,273 | $3.78 | $16,152 | 24,198 | May 31, 2023 |
| A2A Pharmaceuticals, Inc. | — | Sale | 25,000 | $33.84 | $846,000 | 3,625,000 | May 12, 2023 |
| A2A Pharmaceuticals, Inc. | — | Sale | 150,000 | $34.50 | $5,175,000 | 3,650,000 | May 8, 2023 |
| A2A Pharmaceuticals, Inc. | — | Sale | 200,000 | $29.12 | $5,824,000 | 3,900,000 | Apr 20, 2023 |
| A2A Pharmaceuticals, Inc. | — | Sale | 200,000 | $31.25 | $6,250,000 | 4,100,000 | Mar 31, 2023 |
| A2A Pharmaceuticals, Inc. | — | Sale | 200,000 | $31.25 | $6,250,000 | 4,100,000 | Mar 31, 2023 |
| Cormorant Global Healthcare Master Fund, LP | — | Purchase | 400,000 | $30.00 | $12,000,000 | 3,570,872 | Mar 30, 2023 |
| Valle Franco | Chief Financial Officer | Award / Grant | 2,518 | $3.78 | $9,518 | 19,925 | Nov 30, 2022 |
| Hitchcock Michael J.M. | — | Purchase | 5,000 | $7.93 | $39,650 | 5,000 | Nov 14, 2022 |
| Valle Franco | Chief Financial Officer | Purchase | 4,100 | $7.63 | $31,283 | 17,407 | Nov 11, 2022 |
| Erdtmann Rainer M | President & COO | Gift | 4,000 | — | — | 808,027 | Aug 16, 2022 |
| A2A Pharmaceuticals, Inc. | — | Purchase | 30,684 | $13.87 | $425,587 | 4,300,000 | Aug 16, 2022 |
| A2A Pharmaceuticals, Inc. | — | Sale | 34,658 | $11.21 | $388,516 | 4,330,684 | Jul 21, 2022 |
| A2A Pharmaceuticals, Inc. | — | Sale | 34,658 | $11.76 | $407,578 | 4,365,342 | Jun 24, 2022 |
| Biomea Health, LLC | — | Other | 4,365,342 | — | — | — | Jun 1, 2022 |
| Valle Franco | Chief Financial Officer | Award / Grant | 3,307 | $4.67 | $15,444 | 13,307 | May 31, 2022 |
| Valle Franco | Chief Financial Officer | Purchase | 10,000 | $8.68 | $86,800 | 10,000 | Jan 14, 2022 |
| A2A Pharmaceuticals, Inc. | — | Purchase | 34,658 | $10.96 | $379,852 | 4,400,000 | Sep 17, 2021 |
| Stergiopoulos Sotirios | — | Purchase | 34,658 | $10.96 | $379,852 | 4,400,000 | Sep 17, 2021 |
| Erdtmann Rainer M | President & COO | Purchase | 24,000 | $13.20 | $316,800 | 228,470 | Aug 23, 2021 |
| Butler Thomas Andrew | CEO | Purchase | 24,000 | $13.20 | $316,800 | 228,470 | Aug 23, 2021 |
| Cormorant Asset Management, LP | — | Purchase | 900,000 | $17.00 | $15,300,000 | 3,170,872 | Apr 20, 2021 |
| Erdtmann Rainer M | President and COO | Purchase | 3,000 | $17.00 | $51,000 | 3,000 | Apr 15, 2021 |
| Erdtmann Rainer M | President & COO | Purchase | 14,000 | $10.77 | $150,780 | 204,470 | Apr 15, 2021 |
| Butler Thomas Andrew | CEO | Purchase | 14,000 | $10.77 | $150,780 | 204,470 | Apr 15, 2021 |