STOK's three largest insider shareholders as of April 17, 2026 are Trust Skorpios (TenPercentOwner, 3.91Mn shares), Trust Skorpios (TenPercentOwner, 3.91Mn shares), Adrian R. Krainer (Director, 283.30K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Trust Skorpios | - | 0 | 3,906,181 | 06 Jun, 2025 |
| Trust Skorpios | - | 0 | 3,906,181 | 06 Jun, 2025 |
| Adrian R. Krainer | - | 283,302 | 0 | 12 Mar, 2026 |
| Edward M. Md Kaye | Ceo | 110,874 | 0 | 17 Mar, 2026 |
| Barry Ticho | Chief Medical Officer | 38,864 | 0 | 03 Apr, 2026 |
| Barry Ticho | Chief Medical Officer | 38,864 | 0 | 03 Apr, 2026 |
| Arthur Tzianabos | Interim Executive Chair | 31,339 | 0 | 12 Mar, 2026 |
| Arthur Tzianabos | Interim Executive Chair | 31,339 | 0 | 12 Mar, 2026 |
| Stephen J Tulipano | Cfo | 20,746 | 0 | 19 Mar, 2024 |
| Stephen J Tulipano | Cfo | 20,746 | 0 | 19 Mar, 2024 |
| Jonathan Allan | General Counsel Corp Sec | 19,543 | 0 | 24 Mar, 2026 |
| Jason Hoitt | Chief Patient Officer | 10,276 | 0 | 19 Mar, 2026 |
| Thomas Leggett | Chief Financial Officer | 10,172 | 0 | 19 Mar, 2026 |
| Arthur A Levin | - | 4,237 | 0 | 17 Mar, 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 |
|---|---|---|---|---|---|---|---|---|
| 03 Apr, 2026 | Clare Kahn | Stock Option (Right to Buy) | A | 30,782 | $0.00 | 30,782 | D | A |
| 01 Apr, 2026 | Barry Ticho | Common Stock | D | 1,838 | $32.66 | 38,864 | D | S |
| 20 Mar, 2026 | Jonathan Allan | Common Stock | D | 8,692 | $33.64 | 20,144 | D | S |
| 20 Mar, 2026 | Jonathan Allan | Common Stock | D | 601 | $34.41 | 19,543 | D | S |
| 17 Mar, 2026 | Barry Ticho | Common Stock | D | 3,577 | $32.74 | 50,071 | D | S |
| 17 Mar, 2026 | Jason Hoitt | Common Stock | D | 1,033 | $32.74 | 12,955 | D | S |
| 17 Mar, 2026 | Thomas Leggett | Common Stock | D | 1,274 | $32.74 | 13,476 | D | S |
| 17 Mar, 2026 | Jonathan Allan | Common Stock | D | 2,476 | $32.74 | 35,255 | D | S |
| 17 Mar, 2026 | Jonathan Allan | Common Stock | D | 1,791 | $33.38 | 33,464 | D | S |
| 17 Mar, 2026 | Thomas Leggett | Common Stock | D | 922 | $33.38 | 12,554 | D | S |
| 17 Mar, 2026 | Jason Hoitt | Common Stock | D | 748 | $33.38 | 12,207 | D | S |
| 17 Mar, 2026 | Barry Ticho | Common Stock | D | 2,587 | $33.38 | 47,484 | D | S |
| 18 Mar, 2026 | Jonathan Allan | Common Stock | D | 4,222 | $31.28 | 29,242 | D | S |
| 18 Mar, 2026 | Barry Ticho | Common Stock | D | 6,100 | $31.28 | 41,384 | D | S |
| 18 Mar, 2026 | Jason Hoitt | Common Stock | D | 1,762 | $31.28 | 10,445 | D | S |
| 18 Mar, 2026 | Thomas Leggett | Common Stock | D | 2,173 | $31.28 | 10,381 | D | S |
| 18 Mar, 2026 | Barry Ticho | Common Stock | D | 483 | $31.79 | 40,901 | D | S |
| 18 Mar, 2026 | Jonathan Allan | Common Stock | D | 334 | $31.79 | 28,908 | D | S |
| 18 Mar, 2026 | Thomas Leggett | Common Stock | D | 172 | $31.79 | 10,209 | D | S |
| 18 Mar, 2026 | Jason Hoitt | Common Stock | D | 139 | $31.79 | 10,306 | D | S |