As of June 09, 2026, Tectonic Therapeutic's top three insider holders are Timothy A Springer (Director, 5.84Mn shares), Braden Michael Leonard (TenPercentOwner, 4.77Mn shares), Geoffrey Mackay (President Ceo, 633.13K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Timothy A Springer | - | 4,334,846 | 1,503,358 | 11 Apr, 2025 |
| Terrance Mcguire | - | 0 | 573,062 | 07 Apr, 2025 |
| Braden Michael Leonard | - | 0 | 4,768,262 | 15 May, 2024 |
| Philip J. Vickers | - | 4,800 | 0 | 08 Jul, 2021 |
| Geoffrey Mackay | President Ceo | 188,012 | 445,123 | 26 Jan, 2023 |
| Christian Cortis | Chief Operating Officer | 126,368 | 0 | 24 Jun, 2024 |
| Alise Reicin | Chief Executive Officer | 311,547 | 127,030 | 05 Mar, 2026 |
| Steven Avruch | Chief Legal Officer | 22,022 | 0 | 05 Feb, 2024 |
| Erik Ostrowski | Interim Ceo, President And Cfo | 29,285 | 0 | 05 Feb, 2024 |
| Praveen P. Tipirneni | - | 3,037 | 0 | 24 Jun, 2024 |
| Daniel Lochner | Chief Financial Officer | 58,544 | 0 | 05 Mar, 2026 |
| Stefan Vitorovic | - | 0 | 27,774 | 24 Jun, 2024 |
| Essra Ridha | Chief Medical Officer | 15,881 | 0 | 05 Feb, 2024 |
| Azadeh Golipour | Chief Technology Officer | 55,872 | 0 | 05 Feb, 2024 |
| Marc Schwabish | Chief Business Officer | 45,314 | 0 | 05 Mar, 2026 |
| Peter Mcnamara | Chief Scientific Officer | 55,285 | 0 | 09 Mar, 2026 |
| Marcella K. Ruddy | Chief Medical Officer | 68,747 | 0 | 03 Apr, 2026 |
* 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 |
|---|---|---|---|---|---|---|---|---|
| 01 Apr, 2026 | Francois Nader | Stock Option (Right to Buy) | A | 20,400 | $0.00 | 20,400 | D | A |
| 01 Apr, 2026 | Marcella K. Ruddy | Common Stock | D | 1,000 | $31.05 | 68,747 | D | S |
| 06 Mar, 2026 | Marcella K. Ruddy | Common Stock | D | 10,000 | $30.00 | 69,747 | D | S |
| 06 Mar, 2026 | Peter Mcnamara | Common Stock | A | 2,500 | $2.38 | 61,332 | D | M |
| 06 Mar, 2026 | Peter Mcnamara | Common Stock | A | 215 | $14.71 | 61,547 | D | M |
| 06 Mar, 2026 | Peter Mcnamara | Common Stock | D | 6,047 | $30.00 | 55,500 | D | S |
| 06 Mar, 2026 | Peter Mcnamara | Common Stock | D | 215 | $35.00 | 55,285 | D | S |
| 06 Mar, 2026 | Peter Mcnamara | Employee Stock Option (Right to Buy) | D | 2,500 | - | 31,959 | D | M |
| 06 Mar, 2026 | Peter Mcnamara | Employee Stock Option (Right to Buy) | D | 215 | $0.00 | 8,045 | D | M |
| 04 Mar, 2026 | Alise Reicin | Common Stock | A | 76,500 | $0.00 | 311,547 | D | A |
| 11 Feb, 2026 | Alise Reicin | Common Stock | A | 2,500 | $21.10 | 127,030 | I | P |
| 04 Mar, 2026 | Marc Schwabish | Common Stock | A | 19,500 | $0.00 | 45,314 | D | A |
| 04 Mar, 2026 | Marcella K. Ruddy | Common Stock | A | 26,500 | $0.00 | 79,747 | D | A |
| 03 Mar, 2026 | Peter Mcnamara | Common Stock | D | 1,649 | $22.06 | 37,482 | D | S |
| 04 Mar, 2026 | Daniel Lochner | Common Stock | A | 26,500 | $0.00 | 58,544 | D | A |
| 04 Mar, 2026 | Daniel Lochner | Employee Stock Option (Right to Buy) | A | 24,250 | $0.00 | 24,250 | D | A |
| 04 Mar, 2026 | Marc Schwabish | Employee Stock Option (Right to Buy) | A | 17,750 | $0.00 | 17,750 | D | A |
| 04 Mar, 2026 | Marcella K. Ruddy | Employee Stock Option (Right to Buy) | A | 24,250 | $0.00 | 24,250 | D | A |
| 04 Mar, 2026 | Peter Mcnamara | Common Stock | A | 23,000 | $0.00 | 60,482 | D | A |
| 04 Mar, 2026 | Alise Reicin | Employee Stock Option (Right to Buy) | A | 69,250 | $0.00 | 69,250 | D | A |