Tectonic Therapeutic, 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 |
|---|---|---|---|---|---|---|---|
| McNamara Peter | Chief Scientific Officer | Option Exercise | 7,000 | $2.98 | $20,860 | 40,879 | Dec 22, 2025 |
| Schwabish Marc | Chief Business Officer | Award / Grant | 4,210 | — | — | 22,933 | Sep 25, 2025 |
| McNamara Peter | Chief Scientific Officer | Award / Grant | 4,550 | — | — | 33,879 | Sep 25, 2025 |
| Lochner Daniel | Chief Financial Officer | Award / Grant | 5,430 | — | — | 28,121 | Sep 25, 2025 |
| Ruddy Marcella K. | Chief Medical Officer | Award / Grant | 5,370 | — | — | 55,311 | Sep 25, 2025 |
| REICIN ALISE | Chief Executive Officer | Award / Grant | 14,700 | — | — | 228,185 | Sep 25, 2025 |
| REICIN ALISE | Chief Executive Officer | Tax Withholding | 859 | $19.81 | $17,017 | 213,485 | Jun 20, 2025 |
| SPRINGER TIMOTHY A | — | Purchase | 9,478 | $16.31 | $154,586 | 4,334,846 | Apr 10, 2025 |
| SPRINGER TIMOTHY A | — | Purchase | 87,500 | $17.10 | $1,496,250 | 4,313,558 | Apr 7, 2025 |
| MCGUIRE TERRANCE | — | Sale | 500,000 | $17.10 | $8,550,000 | 573,062 | Apr 7, 2025 |
| SPRINGER TIMOTHY A | — | Purchase | 660,000 | $50.00 | $33,000,000 | 970,223 | Feb 5, 2025 |
| Lochner Daniel | Chief Financial Officer | Purchase | 4,617 | $54.14 | $249,964 | 4,617 | Feb 5, 2025 |
| Schwabish Marc | Chief Business Officer | Award / Grant | 14,023 | — | — | 18,723 | Feb 4, 2025 |
| McNamara Peter | Chief Scientific Officer | Award / Grant | 15,141 | — | — | 29,329 | Feb 4, 2025 |
| Lochner Daniel | Chief Financial Officer | Award / Grant | 18,074 | — | — | 18,074 | Feb 4, 2025 |
| Ruddy Marcella K. | Chief Medical Officer | Award / Grant | 17,876 | — | — | 49,941 | Feb 4, 2025 |
| REICIN ALISE | Chief Executive Officer | Award / Grant | 36,047 | — | — | 214,344 | Feb 4, 2025 |
| Schwabish Marc | Chief Business Officer | Option Exercise | 2,700 | $2.38 | $6,426 | 4,700 | Jan 28, 2025 |
| Schwabish Marc | Chief Business Officer | Option Exercise | 2,000 | $2.38 | $4,760 | 2,000 | Dec 9, 2024 |
| REICIN ALISE | Chief Executive Officer | Award / Grant | 11,717 | — | — | 178,297 | Dec 4, 2024 |
| McNamara Peter | Chief Scientific Officer | Option Exercise | 3,500 | $2.38 | $8,330 | 14,188 | Dec 3, 2024 |
| SPRINGER TIMOTHY A | — | Purchase | 300,000 | $33.59 | $10,077,000 | 4,096,764 | Oct 22, 2024 |
| SPRINGER TIMOTHY A | — | Other | 1,240,893 | — | — | 310,223 | Sep 26, 2024 |
| Leonard Braden Michael | — | Other | 400,355 | — | — | 400,355 | Jun 20, 2024 |
| Vitorovic Stefan | — | Award / Grant | 1,000,900 | — | — | 1,000,900 | Jun 20, 2024 |
| Tipirneni Praveen P. | — | Award / Grant | 3,037 | — | — | 3,037 | Jun 20, 2024 |
| SPRINGER TIMOTHY A | — | Award / Grant | 1,551,116 | — | — | 1,551,116 | Jun 20, 2024 |
| MCGUIRE TERRANCE | — | Award / Grant | 20,262 | — | — | 20,262 | Jun 20, 2024 |
| Ruddy Marcella K. | Chief Medical Officer | Award / Grant | 32,065 | — | — | 32,065 | Jun 20, 2024 |
| McNamara Peter | Chief Scientific Officer | Award / Grant | 10,688 | — | — | 10,688 | Jun 20, 2024 |
| REICIN ALISE | Chief Executive Officer | Award / Grant | 124,530 | — | — | 124,530 | Jun 20, 2024 |
| Cortis Christian | Chief Operating Officer | Award / Grant | 126,368 | — | — | 126,368 | Jun 20, 2024 |
| Leonard Braden Michael | — | Purchase | 216,053 | $1.26 | $272,227 | 4,471,380 | May 13, 2024 |
| Ostrowski Erik | Interim CEO, President and CFO | Option Exercise | 40,084 | — | — | 42,384 | Feb 5, 2024 |
| Golipour Azadeh | Chief Technology Officer | Tax Withholding | 12,232 | $1.20 | $14,678 | 55,872 | Feb 1, 2024 |
| Ridha Essra | Chief Medical Officer | Tax Withholding | 16,953 | $1.20 | $20,344 | 15,881 | Feb 1, 2024 |
| Avruch Steven | Chief Legal Officer | Tax Withholding | 10,812 | $1.20 | $12,974 | 22,022 | Feb 1, 2024 |
| Golipour Azadeh | Chief Technology Officer | Tax Withholding | 111 | $1.21 | $134 | 30,770 | Jun 12, 2023 |
| MACKAY GEOFFREY | President & CEO | Option Exercise | 45,999 | $0.91 | $41,859 | 188,012 | Dec 28, 2022 |
| MACKAY GEOFFREY | President & CEO | Option Exercise | 142,013 | $0.41 | $58,225 | 387,136 | Dec 23, 2022 |
| Vickers Philip J. | — | Purchase | 4,800 | $8.35 | $40,080 | 4,800 | Jul 7, 2021 |
| Donenberg Phillip B. | — | Purchase | 2,000 | $11.71 | $23,420 | 2,000 | Feb 17, 2021 |
| MACKAY GEOFFREY | President & CEO | Option Exercise | 100,000 | $0.41 | $41,000 | 245,123 | Dec 24, 2020 |
| ATLAS VENTURE ASSOCIATES X, L.P. | — | Other | 1,046,426 | — | — | 3,710,052 | Feb 13, 2020 |
| MACKAY GEOFFREY | See Remarks | Sale | 1,400 | $29.07 | $40,698 | 345,123 | Feb 12, 2020 |
| PAIGE CHRISTOPHER | — | Sale | 15,000 | $28.00 | $420,000 | 252,512 | Feb 11, 2020 |
| MACKAY GEOFFREY | See Remarks | Sale | 18,404 | $28.10 | $517,152 | 346,523 | Feb 11, 2020 |
| PAIGE CHRISTOPHER | — | Sale | 10,000 | $23.00 | $230,000 | 267,512 | Jan 28, 2020 |
| MACKAY GEOFFREY | See Remarks | Gift | 200,000 | — | — | 145,123 | Jul 29, 2019 |
| Booth Bruce | — | Purchase | 810,811 | $18.50 | $15,000,004 | 5,567,289 | Jul 19, 2019 |