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$IMNM
$18.77 +$0.88 (4.92%) Close

Ownership

13F as of Q2 2026 · 113.6M shares outstanding

Who owns IMNM?

By type of holder
Institutions 100.0% Insiders 0.0% Everyone else 0.0%
Concentration Top 10 holders own 69.9%
T. Rowe Price Investment Management, Inc. 17.3% · FMR LLC 15.0%
Institutional ownership
100.0%
0 pts vs last qtr
Institutional holders
199
-3 vs last qtr
Net shares bought
+1.2M
by institutions in Q2 2026
New / sold out
30 / 33
positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026
  • T. Rowe Price Investment Management, Inc. +3.3M
  • MetLife Investment Management, LLC +803.2K

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Biggest sellers in Q2 2026
  • Jefferies Financial Group Inc. SOLD OUT −1.2M
  • Price T Rowe Associates Inc /MD/ −1.1M

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Who is planning to sell?

Notices of proposed sale, last 12 months
$18.7M
15 notices from 8 people
Shares covered
834.9K
0.74% of the company
Arranged in advance
93%
of the value is under a 10b5-1 plan
Under a 10b5-1 plan No plan
$0$2.9M$5.7MNovDecJanFebMar 2026: $1.4M without a planMarApr 2026: $1.6M under a 10b5-1 planAprMayJun 2026: $4.3M under a 10b5-1 planJunJul 2026: $5.7M under a 10b5-1 planJulAug 2026: $5.3M under a 10b5-1 planAugSep 2026: $334.2K under a 10b5-1 planSepOct
Largest proposed sellers
  • Abhmc II, LLC Shareholder 10b5-1 $9.38M
  • Rosett Max Officer 10b5-1 $2.54M

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Every notice on Red Flags →

A Form 144 is notice of a planned sale, not the sale itself. What insiders actually sold is on Insider Transactions.

Is your stake being diluted?

Diluted share count, FY2020–FY2025
+2477.0%
+91.52% a year
Each share's claim on the business
−96.1%
shrank without buying or selling a share
Spent on buybacks vs paid in stock
— vs $57.1M
over 6 fiscal years
Diluted shares, split-adjusted
3.3M45.8M88.2M2020: 3.4M shares'202021: 11.5M shares'212022: 12.1M shares'222023: 19.8M shares'232024: 58.6M shares'242025: 87.4M shares'25
Buybacks Stock-based comp
$0$12.8M$25.7M2020 buybacks: $02020 stock comp: $621.0K'202021 buybacks: $02021 stock comp: $3.4M'212022 buybacks: $02022 stock comp: $5.3M'222023 buybacks: $02023 stock comp: $6.2M'232024 buybacks: $02024 stock comp: $15.7M'242025 buybacks: $02025 stock comp: $25.7M'25

How patient are the owners?

Institutional shares by how long they've been held
5+ years18% 3–5 years6% 1–3 years69% Under 1 year8%
Quarterly turnover
8.8%
of institutional shares changed hands
Top 10 managers, median time held
2.5 years

Super Investors

Investment managers reporting IMNM on Form 13F
TR
T. Rowe Price Investment Management, Inc.
Shares
19.7M
% of company
17.32%
Change vs last qtr
+3.3M (+20.2%)
Held since
2024
F
FMR LLC
Shares
17.0M
% of company
14.96%
Change vs last qtr
+17.6K (+0.1%)
Held since
2023

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Institutional Funds

Mutual funds and ETFs reporting IMNM on Form N-PORT; together they hold 49.2% of the company
TR
T. Rowe Price Small-Cap Stock Fund, Inc.
Position value
$152M
% of company
6.32%
% of the fund
1.64%
As of
June 30, 2026
FG
Fidelity Mt. Vernon Street Trust
Position value
$134M
% of company
4.32%
% of the fund
0.14%
As of
August 31, 2026

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Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G
IA
Immunome Aggregator, LP
5%+ holder13D · 4.3%
Shares
4.8M
% of company
4.20%
Change vs last qtr
—
Held since
—
BI
Barchas Isaac
Insider
Shares
3.1M
% of company
2.74%
Change vs last qtr
—
Held since
—

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