List of insiders holdings for Tectonic Therapeutic Inc.:
- Shares directly owned by the insider.
- Shares indirectly owned by the insider.
- Total shares owned by the insider (sum of shares directly and indirectly owned).
- Total market value if available.
- Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
| # | Insider Holder Name | Report Date Time | Shares Owned Directly Indirectly | Total Shares Owned | Filing |
| 1 | SPRINGER TIMOTHY A Director 10% Owner | 2025-04-11 18:12:08 | 4,334,846 1,689,492 | 6,024,338 | Form 4 |
| 2 | ATLAS VENTURE ASSOCIATES X L.P. 10% Owner | 2020-02-18 21:51:43 | 4,756,478 0 | 4,756,478 | Form 4 |
| 3 | Requadt Scott Director | 2018-06-25 18:18:34 | 0 2,962,325 | 2,962,325 | Form 4 |
| 4 | Blackstone Holdings II L.P. Blackstone Clarus III L.L.C. Blackstone Holdings I Blackstone Group L.P. Blackstone Group Management L.L.C. SCHWARZMAN STEPHEN A 10% Owner | 2019-01-15 09:24:04 | 0 2,962,325 | 2,962,325 | Form 3 |
| 5 | SVLSF VI LLC SV Life Sciences Fund VI L.P. SV Life Sciences Fund VI Strategic Partners L.P. SV Life Sciences Fund VI (GP) L.P. 10% Owner | 2021-02-16 16:02:55 | 1,417,204 0 | 1,417,204 | Form 13D |
| 6 | Leonard Braden Michael Former 10% owner of AVROBIO | 2024-06-25 13:42:11 | 66,666 800,710 | 867,376 | Form 4 |
| 7 | Atlas Venture Opportunity Fund I L.P. Atlas Venture Associates Opportunity I L.P. Atlas Venture Associates Opportunity I LLC See Remarks | 2019-07-29 21:11:33 | 0 810,811 | 810,811 | Form 3 |
| 8 | MCGUIRE TERRANCE Director | 2025-04-07 17:19:24 | 657,976 0 | 657,976 | Form 13D |
| 9 | REICIN ALISE Chief Executive Officer | 2025-02-06 16:05:06 | 316,297 124,530 | 440,827 | Form 4 |
| 10 | MACKAY GEOFFREY President & CEO | 2023-02-10 17:08:28 | 300,667 0 | 300,667 | Form 4 |
| 11 | Cortis Christian Chief Operating Officer | 2024-06-24 16:16:36 | 201,133 0 | 201,133 | Form 4 |
| 12 | Golipour Azadeh Chief Technology Officer | 2024-02-05 20:01:02 | 167,871 0 | 167,871 | Form 4 |
| 13 | Dorton Katina Chief Financial Officer | 2018-10-10 18:11:06 | 158,318 0 | 158,318 | Form 4 |
| 14 | Ostrowski Erik Interim CEO, President and CFO | 2024-02-05 19:57:30 | 149,534 0 | 149,534 | Form 4 |
| 15 | Mason Christopher Chief Scientific Officer | 2021-06-14 18:03:04 | 125,000 0 | 125,000 | Form 4 |
| 16 | Avruch Steven Chief Legal Officer | 2024-02-05 19:56:00 | 120,521 0 | 120,521 | Form 4 |
| 17 | Ridha Essra Chief Medical Officer | 2024-02-05 19:59:27 | 114,380 0 | 114,380 | Form 4 |
| 18 | Petersen Deanna M Chief Business Officer | 2023-02-10 17:16:35 | 86,667 0 | 86,667 | Form 4 |
| 19 | Ruddy Marcella K. Chief Medical Officer | 2025-02-06 16:05:11 | 82,443 0 | 82,443 | Form 4 |
| 20 | Volck Birgitte President of R&D | 2020-03-06 16:38:02 | 76,000 0 | 76,000 | Form 4 |
| 21 | Atlas Venture Fund X L.P. ATLAS VENTURE ASSOCIATES X L.P. Atlas Venture Associates X LLC 10% Owner | 2024-10-28 18:08:43 | 67,567 0 | 67,567 | Form 13D |
| 22 | McNamara Peter Chief Scientific Officer | 2025-02-06 16:05:14 | 56,859 0 | 56,859 | Form 4 |
| 23 | Escolar Diana Chief Medical Officer | 2021-06-14 17:55:42 | 50,000 0 | 50,000 | Form 4 |
| 24 | Schwabish Marc Chief Business Officer | 2025-02-06 16:05:14 | 44,219 0 | 44,219 | Form 4 |
| 25 | Vitorovic Stefan Director | 2024-06-24 16:35:35 | 11,760 27,774 | 39,534 | Form 4 |
| 26 | KREHER NERISSA Chief Medical Officer | 2018-10-10 18:05:27 | 27,571 0 | 27,571 | Form 4 |
| 27 | Tipirneni Praveen P. Director | 2024-06-24 16:32:33 | 26,963 0 | 26,963 | Form 4 |
| 28 | Farfel Gail M Director | 2023-06-08 16:28:51 | 17,643 0 | 17,643 | Form 4 |
| 29 | PAIGE CHRISTOPHER Director | 2023-06-08 16:31:34 | 17,643 0 | 17,643 | Form 4 |
| 30 | Vickers Philip J. Director | 2023-06-08 16:29:53 | 17,643 0 | 17,643 | Form 4 |
| 31 | Booth Bruce Director | 2023-06-08 16:27:43 | 17,643 0 | 17,643 | Form 4 |
| 32 | Jenkins Annalisa Director | 2023-06-08 16:26:42 | 17,643 0 | 17,643 | Form 4 |
| 33 | CLARK IAN T Director | 2023-06-08 16:25:47 | 17,643 0 | 17,643 | Form 4 |
| 34 | Donenberg Phillip B. Director | 2024-06-24 16:37:33 | 11,760 0 | 11,760 | Form 4 |
| 35 | Lochner Daniel Chief Financial Officer | 2025-02-07 16:19:30 | 4,617 0 | 4,617 | Form 4 |
| 36 | Resnick Joshua Director | 2018-06-20 20:04:18 | 0 0 | 0 | Form 3 |
| 37 | Clarus Lifesciences III L.P. Clarus Ventures III GP L.P. 10% Owner | 2019-08-05 18:52:38 | 0 0 | 0 | Form 13D |
| 38 | Clarus Lifesciences III L.P. Clarus Ventures III GP L.P. Clarus Ventures III LLC 10% Owner | 2019-08-05 18:52:38 | 0 0 | 0 | Form 13D |