IMMUNOME INC IMNM
COM · Common Stock · CUSIP 45257U108
- SectorHealth care
- IndustryPharmaceutical Preparations
- HeadquartersBothell, WA
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($56.0k this quarter). Holder counts are more reliable. Shares outstanding: 113.6m as of 2026-08-06, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $21.19. Options: 6 managers hold calls ($7.7m notional), 5 hold puts ($2.1m).
Trends to Q2 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 25 |
| Q4 2022 | 29 |
| Q1 2023 | 31 |
| Q2 2023 | 36 |
| Q3 2023 | 36 |
| Q4 2023 | 58 |
| Q1 2024 | 104 |
| Q2 2024 | 115 |
| Q3 2024 | 116 |
| Q4 2024 | 122 |
| Q1 2025 | 144 |
| Q2 2025 | 143 |
| Q3 2025 | 153 |
| Q4 2025 | 183 |
| Q1 2026 | 202 |
| Q2 2026 | 202 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2024 | 63 | 48 |
| Q4 2024 | 65 | 62 |
| Q1 2025 | 107 | 31 |
| Q2 2025 | 81 | 65 |
| Q3 2025 | 90 | 53 |
| Q4 2025 | 121 | 55 |
| Q1 2026 | 116 | 75 |
| Q2 2026 | 106 | 86 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2025 | $4.9m | $50.7m | 10.37 |
| Q4 2025 | $21.4m | $51.7m | 2.41 |
| Q1 2026 | $7.1m | $30.5m | 4.31 |
| Q2 2026 | $7.7m | $2.1m | 0.27 |
Biggest buyers
| T. Rowe Price Investment Management, Inc. | Added | +3.3m |
| MetLife Investment Management, LLC | Added | +803.2k |
| BlackRock, Inc. | Added | +636.8k |
| WELLINGTON MANAGEMENT GROUP LLP | Added | +478.2k |
| GOLDMAN SACHS GROUP INC | Added | +411.0k |
| ALERUS FINANCIAL NA | New | +383.4k |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Added | +342.0k |
| DIMENSIONAL FUND ADVISORS LP | Added | +334.6k |
| READYSTATE ASSET MANAGEMENT LP | Added | +304.0k |
| FIRST TRUST ADVISORS LP | New | +262.8k |
Biggest sellers
| Jefferies Financial Group Inc. | Sold out | -1.2m |
| PRICE T ROWE ASSOCIATES INC /MD/ | Reduced | -1.1m |
| MARSHALL WACE, LLP | Reduced | -980.3k |
| JPMORGAN CHASE & CO | Reduced | -929.3k |
| Polar Capital Holdings Plc | Sold out | -849.5k |
| Redmile Group, LLC | Reduced | -647.3k |
| Woodline Partners LP | Reduced | -575.0k |
| MORGAN STANLEY | Reduced | -433.6k |
| Balyasny Asset Management L.P. | Sold out | -251.4k |
| PRIMECAP MANAGEMENT CO/CA/ | Reduced | -206.8k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $3.4m159.9k shares |
| JANE STREET GROUP, LLC | Added | $2.0m93.5k shares |
| CITADEL ADVISORS LLC | Reduced | $1.2m58.0k shares |
| HRT FINANCIAL LP | Reduced | $546.0k25.8k shares |
| SIMPLEX TRADING, LLC | Added | $531.9k25.1k shares |
| GROUP ONE TRADING LLC | Reduced | $42.4k2.0k shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $983.2k46.4k shares |
| JANE STREET GROUP, LLC | Reduced | $491.6k23.2k shares |
| CITADEL ADVISORS LLC | Reduced | $449.2k21.2k shares |
| SIMPLEX TRADING, LLC | Reduced | $127.1k6.0k shares |
| GROUP ONE TRADING LLC | Reduced | $38.1k1.8k shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| T. Rowe Price Investment Management, Inc. 13G · institution +2.9 pts · filed 2026-08-14 | 17.4% |
| FMR LLC 13G · institution +7.9 pts · filed 2025-10-07 | 15.0% |
| Immunome Aggregator, LP 13D · may seek influence filed 2025-02-04 | 6.0% |
Fell to 5% or below in the last year: Sirenia Capital Management LP (4.3%, 2026-08-14), Redmile Group, LLC (4.9%, 2026-05-15), Point72 Asset Management, L.P. (0.0%, 2026-05-15), VANGUARD GROUP INC (0.0%, 2026-03-26), Enavate Sciences GP, LLC (4.3%, 2025-12-22)
Insider purchases and sales since 1 Apr 2026
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q4 2024 | 3 | $1.3m | 0 | — | — |
| Q1 2025 | 3 | $2.4m | 0 | — | — |
| Q2 2025 | 1 | $46.9k | 0 | — | — |
| Q3 2025 | 0 | — | 0 | — | — |
| Q4 2025 | 2 | $1.5m | 1 | $8.3m | $8.3m |
| Q1 2026 | 2 | $544.3k | 1 | $1.3m | — |
| Q2 2026 | 1 | $307.8k | 5 | $6.2m | $5.9m |
| Q3 2026 | 0 | — | 4 | $11.7m | $11.7m |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2026-09-11 | Higgins Jack Chief Scientific Officer | Sold plan | $334.2k13.2k shares |
| 2026-08-12 | Barchas Isaac Director | Sold plan | $301.1k11.0k shares |
| 2026-08-11 | Barchas Isaac Director · See footnote | Sold plan | $1.6m62.3k shares |
| 2026-08-10 | Barchas Isaac Director · See footnote | Sold plan | $264.0k10.1k shares |
| 2026-08-07 | Barchas Isaac Director · See footnote | Sold plan | $397.4k15.2k shares |
| 2026-08-06 | Barchas Isaac Director · See footnote | Sold plan | $543.1k20.8k shares |
| 2026-08-04 | Horn Kinney CHIEF BUSINESS OFFICER | Sold plan | $2.3m90.6k shares |
| 2026-07-07 | Barchas Isaac Director · See footnote | Sold plan | $409.1k16.9k shares |
| 2026-07-07 | Horn Kinney CHIEF BUSINESS OFFICER | Sold plan | $27.3k1.1k shares |
| 2026-07-06 | Barchas Isaac Director · See footnote | Sold plan | $2.0m83.1k shares |
| 2026-07-02 | Barchas Isaac Director · See footnote | Sold plan | $2.3m100.0k shares |
| 2026-07-02 | Lechleider Robert Chief Medical Officer | Sold plan | $1.2m55.0k shares |
| 2026-06-30 | Barchas Isaac Director · See footnotes | Sold plan | $2.1m101.0k shares |
| 2026-06-25 | Lechleider Robert Chief Medical Officer | Sold plan | $1.1m55.0k shares |
| 2026-06-15 | Rosett Max Chief Financial Officer | Sold plan | $1.1m60.0k shares |
| 2026-06-05 | BIENAIME JEAN JACQUES Director | Bought | $204.3k10.5k shares |
| 2026-06-05 | BIENAIME JEAN JACQUES Director | Sold | $203.8k10.5k shares |
| 2026-05-15 | BIENAIME JEAN JACQUES Director | Bought | $103.5k5.0k shares |
| 2026-04-02 | Rosett Max Chief Financial Officer | Sold plan | $1.4m65.0k shares |
| 2026-04-02 | Higgins Jack Chief Scientific Officer | Sold plan | $204.2k9.4k shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q2 2026
| Manager | Shares | Change |
|---|---|---|
| T. Rowe Price Investment Management, Inc. 0.27% of their portfolio | 19.7m $417.0m | Added +3.3m |
| FMR LLC 0.02% of their portfolio | 17.0m $360.0m | Added +17.6k |
| BlackRock, Inc. 0.00% of their portfolio | 8.8m $186.6m | Added +636.8k |
| STATE STREET CORP 0.00% of their portfolio | 5.5m $116.4m | Added +94.7k |
| WELLINGTON MANAGEMENT GROUP LLP 0.02% of their portfolio | 5.2m $110.4m | Added +478.2k |
| Redmile Group, LLC 6.99% of their portfolio | 4.9m $104.1m | Reduced -647.3k |
| PRIMECAP MANAGEMENT CO/CA/ 0.06% of their portfolio | 4.6m $97.1m | Reduced -206.8k |
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 4.6m $96.4m | Added +121.6k |
| Driehaus Capital Management LLC 0.53% of their portfolio | 4.3m $92.1m | Added +246.2k |
| ENAVATE SCIENCES GP, LLC 22.17% of their portfolio | 3.6m $76.6m | Unchanged |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 2.8m $58.4m | Added +194.2k |
| MORGAN STANLEY 0.00% of their portfolio | 2.4m $51.0m | Reduced -433.6k |
| SILVERARC CAPITAL MANAGEMENT, LLC 4.76% of their portfolio | 2.0m $42.7m | Added +166.7k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 1.8m $39.0m | Reduced -929.3k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 1.8m $37.6m | Reduced -1.1m |
| Sofinnova Investments, Inc. 1.95% of their portfolio | 1.7m $36.5m | Added +18.4k |
| READYSTATE ASSET MANAGEMENT LP 1.38% of their portfolio | 1.6m $34.0m | Added +304.0k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 1.5m $32.0m | Added +411.0k |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.00% of their portfolio | 1.3m $28.6m | Added +342.0k |
| PRINCIPAL FINANCIAL GROUP INC 0.01% of their portfolio | 1.3m $28.6m | Reduced -29.5k |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. 0.03% of their portfolio | 1.3m $26.5m | Added +152.4k |
| Woodline Partners LP 0.07% of their portfolio | 1.0m $21.2m | Reduced -575.0k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 968.3k $20.5m | Added +69.2k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 886.2k $18.8m | Added +34.4k |
| MetLife Investment Management, LLC 0.08% of their portfolio | 859.1k $18.2m | Added +803.2k |
| VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio | 756.3k $16.0m | Added +39.9k |
| Pivotal bioVenture Partners Investment Advisor LLC 5.04% of their portfolio | 732.5k $15.5m | Unchanged |
| TD Asset Management Inc 0.01% of their portfolio | 719.3k $15.2m | Added +24.3k |
| NAN FUNG TRINITY (HK) LTD 1.50% of their portfolio | 714.6k $15.1m | Unchanged |
| Candriam S.C.A. 0.06% of their portfolio | 680.1k $14.4m | Added +140.2k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 647.9k $13.7m | Reduced -133.7k |
| Parkman Healthcare Partners LLC 1.29% of their portfolio | 594.2k $12.6m | Added +190.7k |
| MARSHALL WACE, LLP 0.01% of their portfolio | 500.5k $10.6m | Reduced -980.3k |
| Qube Research & Technologies Ltd 0.01% of their portfolio | 439.2k $9.3m | Added +251.0k |
| ALERUS FINANCIAL NA 0.36% of their portfolio | 383.4k $8.1m | New |
| Granahan Investment Management, LLC 0.29% of their portfolio | 378.5k $8.0m | Added +71.5k |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 368.0k $7.8m | Added +334.6k |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 359.8k $7.6m | Reduced -2.8k |
| Rock Springs Capital Management LP 0.36% of their portfolio | 347.7k $7.4m | Unchanged |
| UBS Group AG 0.00% of their portfolio | 328.5k $7.0m | Reduced -104.4k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 298.9k $6.3m | Added +22.8k |
| Atom Investors LP 0.56% of their portfolio | 297.5k $6.3m | Reduced -9.4k |
| Nuveen, LLC 0.00% of their portfolio | 288.9k $6.1m | Reduced -16.3k |
| KENNEDY CAPITAL MANAGEMENT LLC 0.10% of their portfolio | 277.1k $5.9m | Reduced -10.0k |
| Tidal Investments LLC 0.01% of their portfolio | 268.2k $5.7m | Reduced -7.7k |
| Tema ETFs LLC 0.18% of their portfolio | 268.2k $5.7m | First filing |
| Atika Capital Management LLC 0.55% of their portfolio | 262.9k $5.6m | Unchanged |
| FIRST TRUST ADVISORS LP 0.00% of their portfolio | 262.8k $5.6m | New |
| RENAISSANCE TECHNOLOGIES LLC 0.01% of their portfolio | 251.1k $5.3m | Added +182.2k |
| Universal- Beteiligungs- und Servicegesellschaft mbH 0.01% of their portfolio | 231.9k $4.9m | Added +1.1k |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 224.1k $4.7m | Added +143.9k |
| Burkehill Global Management, LP 0.15% of their portfolio | 200.0k $4.2m | Unchanged |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 188.6k $4.0m | Added +1.6k |
| Swiss National Bank 0.00% of their portfolio | 181.6k $3.8m | Reduced -3.4k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio | 172.9k $3.7m | Reduced -33.9k |
| GILDER GAGNON HOWE & CO LLC 0.03% of their portfolio | 152.3k $3.2m | Reduced -17.0k |
| CITIGROUP INC 0.00% of their portfolio | 142.2k $3.0m | Added +116.2k |
| FEDERATED HERMES, INC. 0.00% of their portfolio | 142.1k $3.0m | New |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. 0.00% of their portfolio | 135.5k $2.9m | Added +38.3k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 133.5k $2.9m | Reduced -29.9k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 132.9k $2.8m | Added +3.4k |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 132.5k $2.8m | Added +11.6k |
| Schonfeld Strategic Advisors LLC 0.01% of their portfolio | 132.1k $2.8m | Added +69.7k |
| XTX Topco Ltd 0.03% of their portfolio | 126.6k $2.7m | Added +66.2k |
| Sio Capital Management, LLC 0.45% of their portfolio | 124.2k $2.6m | Reduced -40.9k |
| Aristotle Atlantic Partners, LLC 0.11% of their portfolio | 122.7k $2.6m | Reduced -2.3k |
| ALPS ADVISORS INC 0.01% of their portfolio | 114.4k $2.4m | New |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 111.6k $2.4m | Added +22.5k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 108.2k $2.3m | Reduced -3.2k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 101.4k $2.1m | Added +59.6k |
| Legal & General Group Plc 0.00% of their portfolio | 89.6k $1.9m | Added +8.0k |
| Trexquant Investment LP 0.01% of their portfolio | 88.4k $1.9m | Reduced -78.4k |
| BIT Capital GmbH 0.06% of their portfolio | 83.4k $1.8m | New |
| Rafferty Asset Management, LLC 0.00% of their portfolio | 83.2k $1.8m | Reduced -73.0k |
| Neo Ivy Capital Management 0.39% of their portfolio | 80.9k $1.7m | New |
| Cerity Partners LLC 0.00% of their portfolio | 77.6k $1.6m | Reduced -6.0k |
| Susquehanna Portfolio Strategies, LLC 0.03% of their portfolio | 74.3k $1.6m | Added +30.2k |
| Edgestream Partners, L.P. 0.05% of their portfolio | 71.9k $1.5m | Added +12.0k |
| Invesco Ltd. 0.00% of their portfolio | 68.9k $1.5m | Added +2.4k |
| VANGUARD ASSET MANAGEMENT, Ltd 0.00% of their portfolio | 66.7k $1.4m | Added +7.3k |
| SEI INVESTMENTS CO 0.00% of their portfolio | 62.5k $1.3m | Added +9.7k |
| Freestone Capital Holdings, LLC 0.03% of their portfolio | 60.6k $1.3m | Reduced -925 |
| CAPTRUST FINANCIAL ADVISORS 0.00% of their portfolio | 60.0k $1.3m | New |
| Ikarian Capital, LLC 0.21% of their portfolio | 60.0k $1.3m | New |
| SummitTX Capital, L.P. 0.03% of their portfolio | 59.5k $1.3m | Reduced -33.4k |
| FRANKLIN RESOURCES INC 0.00% of their portfolio | 59.0k $1.3m | Added +23.0k |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio | 58.2k $1.2m | Reduced -762 |
| Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% of their portfolio | 57.7k $1.2m | Added +13.2k |
| BAKER BROS. ADVISORS LP 0.01% of their portfolio | 55.3k $1.2m | New |
| Erste Asset Management GmbH 0.01% of their portfolio | 52.0k $1.1m | Unchanged |
| Birchview Capital, LP 0.50% of their portfolio | 50.0k $1.1m | Unchanged |
| Lido Advisors, LLC 0.00% of their portfolio | 49.3k $1.0m | Added +391 |
| Vanguard Global Advisers, LLC 0.00% of their portfolio | 49.1k $1.0m | Reduced -1.1k |
| VICTORY CAPITAL MANAGEMENT INC 0.00% of their portfolio | 47.5k $1.0m | Added +164 |
| NISA INVESTMENT ADVISORS, LLC 0.00% of their portfolio | 47.2k $1.0m | Reduced -724 |
| Jupiter Topco LLC 0.00% of their portfolio | 45.9k $972.9k | First filing |
| STATE OF WISCONSIN INVESTMENT BOARD 0.00% of their portfolio | 45.4k $962.9k | Reduced -3.5k |
| Mitsubishi UFJ Asset Management (UK) Ltd. 0.44% of their portfolio | 45.0k $954.0k | Added +37.0k |
| Scharf Investments, LLC 0.03% of their portfolio | 44.4k $940.6k | Unchanged |
| Corient Private Wealth LP 0.00% of their portfolio | 43.2k $916.0k | Reduced -250 |