Based on data from the past 90 days ending December 12, 2025, Shattuck Labs's three largest insider shareholders are Chief Executive Officer Taylor Schreiber (2.71Mn shares), Director Advisors Llc Orbimed (1.05Mn shares), Director Mona Ashiya (1.05Mn shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Group, Llc Redmile | 5,539,724 | 06 Dec, 2024 | |
| Josiah Hornblower | 3,155,084 | 25 Jun, 2021 | |
| Taylor Schreiber | Chief Executive Officer | 2,707,362 | 27 Aug, 2025 |
| Advisors Llc Orbimed | 1,051,021 | 02 Sep, 2025 | |
| Mona Ashiya | 1,051,021 | 02 Sep, 2025 | |
| Tyler Brous | 238,088 | 01 Jul, 2024 | |
| Andrew R Neill | Chief Financial Officer | 237,473 | 27 Aug, 2025 |
| Arundathy N. Pandite | Chief Medical Officer | 206,265 | 28 Jan, 2025 |
| Clay B Siegall | 128,054 | 27 Aug, 2025 | |
| Erin Ator Thomson | General Counsel | 103,209 | 27 Jan, 2023 |
| Stephen Stout | 86,275 | 27 Aug, 2025 | |
| Casi Deyoung | Chief Business Officer | 81,465 | 28 Jan, 2025 |
| Abhinav A. Shukla | Chief Technical Officer | 81,258 | 27 Aug, 2025 |
| George Golumbeski | 54,613 | 27 Apr, 2022 |
* 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 |
|---|---|---|---|---|---|---|---|---|
| 25 Aug, 2025 | Advisors Llc Orbimed | Common Stock | A | 5,255,106 | $0.87 | 5,255,106 | I | P |
| 25 Aug, 2025 | Andrew R Neill | Common Stock | A | 64,027 | $0.87 | 237,473 | D | A |
| 25 Aug, 2025 | Stephen Stout | Common Stock | A | 12,805 | $0.87 | 86,275 | D | A |
| 25 Aug, 2025 | Mona Ashiya | Common Stock | A | 5,255,106 | $0.87 | 5,255,106 | I | P |
| 25 Aug, 2025 | Abhinav A. Shukla | Common Stock | A | 5,122 | $0.87 | 81,258 | D | A |
| 25 Aug, 2025 | Taylor Schreiber | Common Stock | A | 25,610 | $0.87 | 96,612 | D | A |
| 25 Aug, 2025 | Clay B Siegall | Common Stock | A | 128,054 | $0.87 | 128,054 | D | A |
| 25 Aug, 2025 | Mona Ashiya | Common Stock | A | 1,051,021 | $0.87 | 1,051,021 | I | P |
| 25 Aug, 2025 | Advisors Llc Orbimed | Common Stock | A | 1,051,021 | $0.87 | 1,051,021 | I | P |
| 25 Jan, 2025 | Arundathy N. Pandite | Common Stock | D | 3,211 | $1.16 | 206,265 | D | F |
| 25 Jan, 2025 | Casi Deyoung | Common Stock | D | 2,297 | $1.16 | 81,465 | D | F |
| 25 Jan, 2025 | Abhinav A. Shukla | Common Stock | D | 2,261 | $1.16 | 73,536 | D | F |
| 25 Jan, 2025 | Arundathy N. Pandite | - | - | 206,265 | D | |||
| 10 Jan, 2025 | Arundathy N. Pandite | Common Stock | D | 6,884 | $1.19 | 209,476 | D | F |
| 10 Jan, 2025 | Casi Deyoung | Common Stock | D | 5,727 | $1.19 | 83,762 | D | F |
| 10 Jan, 2025 | Casi Deyoung | - | - | 83,762 | D | |||
| 10 Jan, 2025 | Abhinav A. Shukla | Common Stock | D | 4,830 | $1.19 | 74,597 | D | F |
| 04 Dec, 2024 | Group, Llc Redmile | - | - | 5,406,353 | I | |||
| 04 Dec, 2024 | Group, Llc Redmile | Common Stock, par value $0.0001 per share | D | 133,371 | $1.25 | 5,406,353 | I | S |
| 04 Dec, 2024 | Group, Llc Redmile | - | - | 5,539,724 | I |