SAB Biotherapeutics's top three insider shareholders as of August 29, 2026 are Eddie Joe Sullivan (Chief Executive Officer, 5.23Mn shares), Capital (Master), L.P. Sessa (Director, 2.20Mn shares), Andrew Moin (Director, 2.20Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Eddie Joe Sullivan | Chief Executive Officer | 5,232,304 | 0 | 5,232,304 | 46.7% | 08 Dec, 2023 |
| 2 | Andrew Moin | Director | 0 | 2,198,457 | 2,198,457 | 19.6% | 01 Oct, 2025 |
| 3 | Capital (Master), L.P. Sessa | Director | 2,198,457 | 0 | 2,198,457 | 19.6% | 01 Oct, 2025 |
| 4 | Edward D. Hamilton | TenPercentOwner | 509 | 504,935 | 505,444 | 4.5% | 26 Oct, 2021 |
| 5 | Jeffrey G Spragens | Director | 394,989 | 0 | 394,989 | 3.5% | 09 Dec, 2022 |
| 6 | Christine E Hamilton | Director, TenPercentOwner | 0 | 311,133 | 311,133 | 2.8% | 09 Dec, 2022 |
| 7 | Helen K. Ellias | Director | 0 | 285,714 | 285,714 | 2.6% | 28 Nov, 2023 |
| 8 | Alexandra Kropotova | Chief Medical Officer | 42,308 | 0 | 42,308 | 0.4% | 26 Jun, 2026 |
| 9 | Samuel J Reich | Executive Chairman | 21,900 | 0 | 21,900 | 0.2% | 30 Nov, 2023 |
| 10 | David Charles Link | Director | 5,731 | 0 | 5,731 | 0.1% | 09 Dec, 2022 |
| 11 | Frederick Finnegan | Chief Business Officer | 3,860 | 0 | 3,860 | 0.0% | 26 Oct, 2021 |
| 12 | Ilan Katz | Director, TenPercentOwner | 1,500 | 0 | 1,500 | 0.0% | 15 Oct, 2021 |
| 13 | Thomas Charles Luke | Chief Medical Officer | 543 | 0 | 543 | 0.0% | 26 Oct, 2021 |
| 14 | Michael King | Chief Financial Officer | 500 | 0 | 500 | 0.0% | 30 Nov, 2023 |
| 15 | Russell P Beyer | Chief Financial Officer | 248 | 2 | 249 | 0.0% | 16 Nov, 2021 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 25 Jun, 2026 | Alexandra Kropotova | Chief Medical Officer | Disposed F | 988 | — | — | 42,308 | Direct |
| 24 Mar, 2026 | Alexandra Kropotova | Chief Medical Officer | Disposed F | 988 | — | — | 43,296 | Direct |
| 03 Feb, 2026 | Lucy To | Officer | Acquired A | 2,400,000 | $0.00 | $0 | 2,400,000 | Direct |
| 03 Feb, 2026 | Samuel J Reich | Ceo | Acquired A | 4,800,000 | $0.00 | $0 | 4,800,000 | Direct |
| 03 Feb, 2026 | Lucy To | Officer | Acquired A | 2,400,000 | $0.00 | $0 | 2,400,000 | Direct |
| 03 Feb, 2026 | Eddie Joe Sullivan | President | Acquired A | 3,000,000 | $0.00 | $0 | 3,000,000 | Direct |
| 03 Feb, 2026 | Eddie Joe Sullivan | President | Acquired A | 3,000,000 | $0.00 | $0 | 3,000,000 | Direct |
| 03 Feb, 2026 | Lucy To | Officer | Acquired A | 2,400,000 | $0.00 | $0 | 2,400,000 | Direct |
| 03 Feb, 2026 | Lucy To | Officer | Acquired A | 2,400,000 | $0.00 | $0 | 2,400,000 | Direct |
| 03 Feb, 2026 | Eddie Joe Sullivan | President | Acquired A | 3,000,000 | $0.00 | $0 | 3,000,000 | Direct |
| 03 Feb, 2026 | Eddie Joe Sullivan | President | Acquired A | 3,000,000 | $0.00 | $0 | 3,000,000 | Direct |
| 03 Feb, 2026 | Christoph Lawrence Bausch | Chief Operating Officer | Acquired A | 1,800,000 | $0.00 | $0 | 1,800,000 | Direct |
| 03 Feb, 2026 | Alexandra Kropotova | Chief Medical Officer | Acquired A | 2,400,000 | $0.00 | $0 | 2,400,000 | Direct |
| 05 Jan, 2026 | David Zaccardelli | Director | Acquired A | 240,000 | $0.00 | $0 | 240,000 | Direct |
| 05 Jan, 2026 | Rita Jain | Director | Acquired A | 240,000 | $0.00 | $0 | 240,000 | Direct |
| 05 Jan, 2026 | David Zaccardelli | Director | Acquired A | 240,000 | $0.00 | $0 | 240,000 | Direct |
| 05 Jan, 2026 | David Zaccardelli | Director | Acquired A | 240,000 | $0.00 | $0 | 240,000 | Direct |
| 05 Jan, 2026 | David Zaccardelli | Director | Acquired A | 240,000 | $0.00 | $0 | 240,000 | Direct |
| 16 Dec, 2025 | Jay S Skyler | Director | Acquired A | 150,000 | $0.00 | $0 | 150,000 | Direct |
| 16 Dec, 2025 | Helen K. Ellias | Director | Acquired A | 150,000 | $0.00 | $0 | 150,000 | Direct |