Immunome, Inc. (IMNM) has 20 known insider and institutional holders on record. The largest holder is Barchas Isaac with 2,031,181 shares. Other notable holders include RAPP MICHAEL and SIEGALL CLAY B.
Over the last 12 months, insiders have made 29 transactions in IMNM stock — 22 buys (valued at $24.06M) and 4 sells (valued at $1.79M). Insider buying has outpaced selling during this period, which may signal confidence in the company's prospects.
IMNM Insider Ownership
Top Holder
Barchas Isaac
2,031,181 shares
Buys (12 mo)
22
$24.06M value
Sells (12 mo)
4
$1.79M value
12-Month Transaction Activity
Top Insider Holders
| # |
Name |
Role |
Shares Owned |
Last Filed |
Relative Size |
| 1 |
Barchas Isaac |
Director |
2,031,181 |
2025-12-23 |
|
| 2 |
Rapp Michael |
Director |
1,071,172 |
2023-10-03 |
|
| 3 |
Siegall Clay B |
President and CEO |
690,704 |
2026-03-31 |
|
| 4 |
Wagenheim Philip |
Director |
369,347 |
2026-03-23 |
|
| 5 |
Roberts Phil Noland |
Chief Technology Officer |
275,000 |
2023-12-15 |
|
| 6 |
Lechleider Robert |
Chief Medical Officer |
242,000 |
2025-07-31 |
|
| 7 |
Rosett Max |
Chief Financial Officer |
207,000 |
2025-07-31 |
|
| 8 |
Stoneman Sandra G. |
Chief Legal Officer & Gc |
190,000 |
2025-07-31 |
|
| 9 |
Sarma Purnanand D |
President and CEO |
166,500 |
2023-06-12 |
|
| 10 |
Horn Kinney |
Chief Business Officer |
161,000 |
2025-07-31 |
|
| 11 |
Turner Bruce |
Chief Strategy Officer |
110,000 |
2024-08-13 |
|
| 12 |
Prendergast Franklyn G |
Director |
60,840 |
2023-10-04 |
|
| 13 |
Robinson Matthew K |
Chief Technology Officer |
58,000 |
2023-06-12 |
|
| 14 |
Roche Corleen M. |
Chief Financial Officer |
58,000 |
2023-06-12 |
|
| 15 |
Giesing Dennis H |
Chief Development Officer |
50,000 |
2023-06-12 |
|
| 16 |
Tsai Philip |
Chief Technical Officer |
43,300 |
2025-12-22 |
|
| 17 |
Bienaime Jean Jacques |
Director |
37,415 |
2026-03-12 |
|
| 18 |
Higgins Jack |
Chief Scientific Officer |
22,000 |
2026-04-03 |
|
| 19 |
Boylan James P |
Director |
18,864 |
2025-06-12 |
|
| 20 |
Swain Sandra M |
Director |
18,864 |
2025-06-12 |
|
Recent Transactions (last 12 months)
| Date |
Name |
Role |
Type |
Shares |
Price |
Value |
| 2026-04-02 |
Rosett Max |
Chief Financial Officer |
Option Exercise (Sell) |
39,713 |
$1.35 |
$53.61K |
| 2026-04-02 |
Higgins Jack |
Chief Scientific Officer |
Informative Sell |
9,438 |
$21.64 |
$204.24K |
| 2026-03-30 |
Higgins Jack |
Chief Scientific Officer |
Gift (Given) |
6,291 |
- |
- |
| 2026-03-27 |
Siegall Clay B |
President and CEO |
Informative Buy |
25,450 |
$19.67 |
$500.6K |
| 2026-03-23 |
Wagenheim Philip |
Director |
Informative Sell |
28,200 |
$20.65 |
$582.33K |
| 2026-03-20 |
Wagenheim Philip |
Director |
Informative Sell |
36,800 |
$20.47 |
$753.3K |
| 2026-03-11 |
Bienaime Jean Jacques |
Director |
Informative Buy |
1,000 |
$21.55 |
$21.55K |
| 2026-03-10 |
Bienaime Jean Jacques |
Director |
Informative Buy |
1,000 |
$22.12 |
$22.12K |
| 2025-12-30 |
Siegall Clay B |
President and CEO |
Informative Buy |
4,729 |
$21.15 |
$100.02K |
| 2025-12-22 |
Barchas Isaac |
Director |
Informative Sell |
11,251 |
$22.34 |
$251.35K |
| 2025-12-19 |
Tsai Philip |
Chief Technical Officer |
Informative Buy |
10,000 |
$20.49 |
$204.9K |
| 2025-12-19 |
Higgins Jack |
Chief Scientific Officer |
Gift (Received) |
1,000 |
- |
- |
| 2025-12-19 |
Siegall Clay B |
President and CEO |
Gift (Given) |
200,000 |
- |
- |
| 2025-12-18 |
Siegall Clay B |
President and CEO |
Informative Buy |
46,511 |
$21.50 |
$999.99K |
| 2025-09-10 |
Higgins Jack |
Chief Scientific Officer |
Option Exercise |
22,000 |
$1.35 |
$29.7K |
| 2025-07-29 |
Tsai Philip |
Chief Technical Officer |
RSU Award |
190,000 |
$10.60 |
$2.01M |
| 2025-07-29 |
Lechleider Robert |
Chief Medical Officer |
RSU Award |
242,000 |
$10.60 |
$2.57M |
| 2025-07-29 |
Rosett Max |
Chief Financial Officer |
RSU Award |
207,000 |
$10.60 |
$2.19M |
| 2025-07-29 |
Higgins Jack |
Chief Scientific Officer |
RSU Award |
196,000 |
$10.60 |
$2.08M |
| 2025-07-29 |
Horn Kinney |
Chief Business Officer |
RSU Award |
161,000 |
$10.60 |
$1.71M |
| 2025-07-29 |
Stoneman Sandra G. |
Chief Legal Officer & Gc |
RSU Award |
190,000 |
$10.60 |
$2.01M |
| 2025-07-29 |
Siegall Clay B |
President and CEO |
RSU Award |
800,000 |
$10.60 |
$8.48M |
| 2025-06-10 |
Boylan James P |
Director |
RSU Award |
18,864 |
$9.57 |
$180.53K |
| 2025-06-10 |
Swain Sandra M |
Director |
RSU Award |
18,864 |
$9.57 |
$180.53K |
| 2025-06-10 |
Barchas Isaac |
Director |
RSU Award |
18,864 |
$9.57 |
$180.53K |
