Over the 90-day window ending February 19, 2026, Immunome's three dominant insider ownership positions are held by Director Isaac Barchas (2.03Mn shares), Director Michael Rapp (1.28Mn shares), President And Ceo Clay B Siegall (665.25K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Isaac Barchas | 2,031,181 | 23 Dec, 2025 | |
| Michael Rapp | 1,279,914 | 03 Oct, 2023 | |
| Clay B Siegall | President And Ceo | 665,254 | 30 Dec, 2025 |
| Philip Wagenheim | 406,147 | 17 Jan, 2023 | |
| John L Lamattina | 66,953 | 17 Jan, 2023 | |
| Franklyn G Prendergast | 60,840 | 04 Oct, 2023 | |
| Max Rosett | Chief Financial Officer | 47,476 | 20 Sep, 2024 |
| Philip Tsai | Chief Technical Officer | 43,300 | 22 Dec, 2025 |
| Bruce Turner | Chief Strategy Officer | 42,300 | 02 Oct, 2023 |
| Michael Lefenfeld | 40,747 | 17 Jan, 2023 | |
| Jack Higgins | Chief Scientific Officer | 38,729 | 22 Dec, 2025 |
| Jean Jacques Bienaime | 36,415 | 03 Jun, 2025 | |
| Robert Lechleider | Chief Medical Officer | 15,805 | 25 Nov, 2024 |
| Purnanand D Sarma | President And Ceo | 10,500 | 26 May, 2021 |
| Richard A Baron | 2,343 | 20 Aug, 2021 |
* 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 |
|---|---|---|---|---|---|---|---|---|
| 30 Dec, 2025 | Clay B Siegall | Common Stock | A | 4,729 | $21.15 | 665,254 | D | P |
| 22 Dec, 2025 | Isaac Barchas | Common Stock | D | 11,251 | $22.34 | 2,031,181 | I | S |
| 22 Dec, 2025 | Isaac Barchas | Common Stock | D | 371,949 | $21.72 | 2,042,432 | I | S |
| 19 Dec, 2025 | Clay B Siegall | Common Stock | A | 7,278 | $20.48 | 860,525 | D | P |
| 19 Dec, 2025 | Clay B Siegall | Common Stock | D | 200,000 | $0.00 | 660,525 | D | G |
| 19 Dec, 2025 | Jack Higgins | Common Stock | D | 1,000 | $0.00 | 39,729 | D | G |
| 19 Dec, 2025 | Jack Higgins | Common Stock | A | 1,000 | $0.00 | 1,000 | I | G |
| 19 Dec, 2025 | Jack Higgins | Common Stock | A | 1,000 | $0.00 | 1,000 | I | G |
| 19 Dec, 2025 | Jack Higgins | Common Stock | D | 1,000 | $0.00 | 38,729 | D | G |
| 19 Dec, 2025 | Jack Higgins | Common Stock | A | 1,000 | $0.00 | 1,000 | I | G |
| 19 Dec, 2025 | Jack Higgins | Common Stock | D | 1,000 | $0.00 | 37,729 | D | G |
| 19 Dec, 2025 | Philip Tsai | Common Stock | A | 10,000 | $20.49 | 43,300 | D | P |
| 18 Dec, 2025 | Clay B Siegall | Common Stock | A | 46,511 | $21.50 | 853,247 | D | P |
| 10 Sep, 2025 | Jack Higgins | Common Stock | A | 22,000 | $1.35 | 40,729 | D | M |
| 03 Jun, 2025 | Jean Jacques Bienaime | - | - | 36,415 | D | |||
| 03 Jun, 2025 | Jean Jacques Bienaime | Common Stock | A | 5,000 | $9.38 | 36,415 | D | P |
| 27 Mar, 2025 | Jack Higgins | - | - | 18,729 | D | |||
| 27 Mar, 2025 | Jack Higgins | Common Stock | A | 5,200 | $1.35 | 18,729 | D | M |
| 26 Mar, 2025 | Clay B Siegall | Common Stock | A | 137,100 | $7.29 | 806,736 | D | P |
| 25 Mar, 2025 | Jean Jacques Bienaime | Common Stock | A | 7,800 | $7.78 | 31,415 | D | P |