As of May 04, 2026, Shattuck Labs's top three insider holders are Group, Llc Redmile (Director, 5.62Mn shares), Group, Llc Redmile (Director, 5.54Mn shares), Josiah Hornblower (Chairman, 2.97Mn shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Group, Llc Redmile | - | 0 | 5,615,489 | 01 Apr, 2024 |
| Group, Llc Redmile | - | 0 | 5,539,724 | 06 Dec, 2024 |
| Josiah Hornblower | Chairman | 0 | 2,966,709 | 16 Jul, 2021 |
| Advisors Llc Orbimed | - | 0 | 1,051,021 | 02 Sep, 2025 |
| Mona Ashiya | - | 0 | 1,051,021 | 02 Sep, 2025 |
| Tyler Brous | - | 238,088 | 0 | 01 Jul, 2024 |
| Andrew R Neill | Chief Financial Officer | 228,224 | 0 | 27 Jan, 2026 |
| Arundathy N. Pandite | Chief Medical Officer | 196,219 | 0 | 27 Jan, 2026 |
| Clay B Siegall | - | 128,054 | 0 | 27 Aug, 2025 |
| Erin Ator Thomson | General Counsel | 103,209 | 0 | 27 Jan, 2023 |
| Taylor Schreiber | Chief Executive Officer | 96,612 | 0 | 27 Aug, 2025 |
| Stephen Stout | - | 81,529 | 0 | 27 Jan, 2026 |
| Abhinav A. Shukla | Chief Technical Officer | 81,258 | 0 | 27 Aug, 2025 |
| Casi Deyoung | Chief Business Officer | 73,480 | 0 | 27 Jan, 2026 |
| George Golumbeski | - | 54,613 | 0 | 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 Jan, 2026 | Stephen Stout | Common Stock | D | 593 | $4.15 | 81,529 | D | F |
| 25 Jan, 2026 | Casi Deyoung | Common Stock | D | 2,286 | $4.15 | 73,480 | D | F |
| 25 Jan, 2026 | Arundathy N. Pandite | Common Stock | D | 3,195 | $4.15 | 196,219 | D | F |
| 25 Jan, 2026 | Andrew R Neill | Common Stock | D | 2,589 | $4.15 | 228,224 | D | F |
| 10 Jan, 2026 | Taylor Schreiber | Stock Option (Right to Buy) | A | 1,548,300 | $0.00 | 1,548,300 | D | A |
| 10 Jan, 2026 | Arundathy N. Pandite | Common Stock | D | 6,851 | $4.75 | 199,414 | D | F |
| 10 Jan, 2026 | Stephen Stout | Common Stock | D | 4,153 | $4.75 | 82,122 | D | F |
| 10 Jan, 2026 | Casi Deyoung | Common Stock | D | 5,699 | $4.75 | 75,766 | D | F |
| 10 Jan, 2026 | Abhinav A. Shukla | Common Stock | A | 315,500 | $0.00 | 315,500 | D | A |
| 10 Jan, 2026 | Andrew R Neill | Common Stock | D | 6,660 | $4.75 | 230,813 | D | F |
| 10 Jan, 2026 | Andrew R Neill | Stock Option (Right to Buy) | A | 549,800 | $0.00 | 549,800 | D | A |
| 10 Jan, 2026 | Arundathy N. Pandite | Common Stock | A | 487,800 | $0.00 | 487,800 | D | A |
| 10 Jan, 2026 | Casi Deyoung | Common Stock | A | 381,600 | $0.00 | 381,600 | D | A |
| 10 Jan, 2026 | Stephen Stout | Stock Option (Right to Buy) | A | 351,400 | $0.00 | 351,400 | D | A |
| 25 Aug, 2025 | Mona Ashiya | Common Stock | A | 5,255,106 | $0.87 | 5,255,106 | I | P |
| 28 Aug, 2025 | Daniel G. Baker | Stock Option (Right to Buy) | A | 66,300 | $0.00 | 66,300 | D | A |
| 25 Aug, 2025 | Advisors Llc Orbimed | Common Stock | A | 5,255,106 | $0.87 | 5,255,106 | I | P |
| 28 Aug, 2025 | Mona Ashiya | Stock Option (Right to Buy) | A | 66,300 | $0.00 | 66,300 | 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 |