According to recent filings covering the 90 days ending February 19, 2026, the three most significant insider holders at Tectonic Therapeutic are Director Timothy A Springer (5.84Mn shares), Director Terrance Mcguire (573.06K shares), Chief Executive Officer Alise Reicin (247.92K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Timothy A Springer | 5,838,204 | 11 Apr, 2025 | |
| Geoffrey Mackay | President & Ceo | 52,759 | 26 Jan, 2023 |
| Terrance Mcguire | 573,062 | 07 Apr, 2025 | |
| Braden Michael Leonard | 36,139 | 25 Jun, 2024 | |
| Alise Reicin | Chief Executive Officer | 247,924 | 12 Feb, 2026 |
| Christian Cortis | Chief Operating Officer | 10,530 | 24 Jun, 2024 |
| Azadeh Golipour | Chief Technology Officer | 4,656 | 05 Feb, 2024 |
| Marcella K. Ruddy | Chief Medical Officer | 53,247 | 10 Feb, 2026 |
| Peter Mcnamara | Chief Scientific Officer | 39,131 | 10 Feb, 2026 |
| Daniel Lochner | Chief Financial Officer | 32,044 | 11 Feb, 2026 |
| Erik Ostrowski | Interim Ceo And President And Cfo | 2,440 | 05 Feb, 2024 |
| Stefan Vitorovic | 2,314 | 24 Jun, 2024 | |
| Marc Schwabish | Chief Business Officer | 25,814 | 12 Feb, 2026 |
| Steven Avruch | Chief Legal Officer | 1,835 | 05 Feb, 2024 |
| Essra Ridha | Chief Medical Officer | 1,323 | 05 Feb, 2024 |
| Philip J. Vickers | 400 | 08 Jul, 2021 | |
| Praveen P. Tipirneni | 253 | 24 Jun, 2024 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 11 Feb, 2026 | Alise Reicin | Common Stock | A | 2,500 | $21.10 | 237,547 | D | P |
| 10 Feb, 2026 | Daniel Lochner | Common Stock | A | 6,000 | $21.61 | 32,044 | D | P |
| 10 Feb, 2026 | Marc Schwabish | Common Stock | A | 4,500 | $2.38 | 25,814 | D | M |
| 04 Feb, 2026 | Alise Reicin | Common Stock | D | 4,104 | $23.22 | 235,047 | D | F |
| 04 Feb, 2026 | Daniel Lochner | Common Stock | D | 2,077 | $23.22 | 26,044 | D | F |
| 04 Feb, 2026 | Marc Schwabish | Common Stock | D | 1,619 | $23.22 | 21,314 | D | F |
| 04 Feb, 2026 | Peter Mcnamara | Common Stock | D | 1,748 | $23.22 | 39,131 | D | F |
| 04 Feb, 2026 | Marcella K. Ruddy | Common Stock | D | 2,064 | $23.22 | 53,247 | D | F |
| 31 Dec, 2025 | Alise Reicin | Common Stock | A | 10,966 | $2.38 | 239,151 | D | M |
| 22 Dec, 2025 | Peter Mcnamara | Common Stock | A | 7,000 | $2.98 | 40,879 | D | M |
| 25 Sep, 2025 | Alise Reicin | Common Stock | A | 14,700 | $0.00 | 228,185 | D | A |
| 25 Sep, 2025 | Daniel Lochner | - | - | 28,121 | D | |||
| 25 Sep, 2025 | Daniel Lochner | Common Stock | A | 5,430 | $0.00 | 28,121 | D | A |
| 25 Sep, 2025 | Marc Schwabish | Common Stock | A | 4,210 | $0.00 | 22,933 | D | A |
| 25 Sep, 2025 | Peter Mcnamara | Common Stock | A | 4,550 | $0.00 | 33,879 | D | A |
| 25 Sep, 2025 | Marcella K. Ruddy | Common Stock | A | 5,370 | $0.00 | 55,311 | D | A |
| 20 Jun, 2025 | Alise Reicin | Common Stock | D | 859 | $19.81 | 213,485 | D | F |
| 11 Apr, 2025 | Timothy A Springer | - | - | 4,334,846 | D | |||
| 11 Apr, 2025 | Timothy A Springer | Common Stock | A | 9,478 | $16.31 | 4,334,846 | D | P |
| 11 Apr, 2025 | Timothy A Springer | - | - | 1,503,358 | I |