Data spanning the past 90 days through January 10, 2026 reveals that Tectonic Therapeutic's three principal insider shareholders consist of Director Timothy A Springer (5.84Mn shares), Director Terrance Mcguire (573.06K shares), Chief Executive Officer Alise Reicin (249.53K 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 | 249,528 | 05 Jan, 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 | 55,311 | 29 Sep, 2025 |
| Peter Mcnamara | Chief Scientific Officer | 40,879 | 29 Dec, 2025 |
| Erik Ostrowski | Interim Ceo And President And Cfo | 2,440 | 05 Feb, 2024 |
| Daniel Lochner | Chief Financial Officer | 28,121 | 29 Sep, 2025 |
| Stefan Vitorovic | 2,314 | 24 Jun, 2024 | |
| Marc Schwabish | Chief Business Officer | 22,933 | 29 Sep, 2025 |
| 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 |
|---|---|---|---|---|---|---|---|---|
| 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 | 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 |
| 25 Sep, 2025 | Marcella K. Ruddy | - | - | 55,311 | D | |||
| 20 Jun, 2025 | Alise Reicin | Common Stock | D | 859 | $19.81 | 213,485 | D | F |
| 11 Apr, 2025 | Timothy A Springer | Common Stock | A | 53,706 | $16.31 | 1,503,358 | I | P |
| 11 Apr, 2025 | Timothy A Springer | - | - | 1,503,358 | I | |||
| 11 Apr, 2025 | Timothy A Springer | Common Stock | A | 9,478 | $16.31 | 4,334,846 | D | P |
| 11 Apr, 2025 | Timothy A Springer | - | - | 4,334,846 | D | |||
| 10 Apr, 2025 | Timothy A Springer | - | - | 4,325,368 | D | |||
| 10 Apr, 2025 | Timothy A Springer | Common Stock | A | 8,092 | $16.73 | 4,325,368 | D | P |
| 10 Apr, 2025 | Timothy A Springer | - | - | 1,449,652 | I | |||
| 10 Apr, 2025 | Timothy A Springer | Common Stock | A | 45,858 | $16.73 | 1,449,652 | I | P |
| 09 Apr, 2025 | Timothy A Springer | - | - | 4,317,276 | D | |||
| 09 Apr, 2025 | Timothy A Springer | - | - | 4,316,419 | D | |||
| 09 Apr, 2025 | Timothy A Springer | - | - | 1,398,938 | I |