Empery Asset Management, LP
· Exited
Change
−2.7M
Δ Own
−100.0%
Date
Q1 2026
IM
| Investor | Type | Est. change | Change | Δ Own | Date | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Empery Asset Management, LP
· Exited
Change
−2.7M
Δ Own
−100.0%
Date
Q1 2026
|
Empery Asset Management, LP | Exited· Q1 2026 | – | −2.7M | −100.0% | Q1 2026 | |||||
|
State Street
· Reduced
Change
−2.1M
Date
Q1 2026
|
State Street | Reduced· Q1 2026 | – | −2.1M | – | Q1 2026 | |||||
|
Marshall Wace, LLP
· Added
Change
+1.3M
Date
Q1 2026
|
Marshall Wace, LLP | Added· Q1 2026 | – | +1.3M | – | Q1 2026 | |||||
|
Millennium Management LLC
· Added
Change
+1.1M
Date
Q1 2026
|
Millennium Management LLC | Added· Q1 2026 | – | +1.1M | – | Q1 2026 | |||||
|
Blue Owl Capital Holdings LP
· Exited
Change
−665K
Δ Own
−100.0%
Date
Q1 2026
|
Blue Owl Capital Holdings LP | Exited· Q1 2026 | – | −665K | −100.0% | Q1 2026 | |||||
|
Summit Financial, LLC
· New
Change
+377K
Date
Q1 2026
|
Summit Financial, LLC | New· Q1 2026 | – | +377K | – | Q1 2026 | |||||
|
Citadel Advisors LLC
· Added
Change
+357K
Δ Own
+394.5%
Date
Q1 2026
|
Citadel Advisors LLC | Added· Q1 2026 | – | +357K | +394.5% | Q1 2026 | |||||
|
Connor, Clark & Lunn Investment Management Ltd.
· Added
Change
+268K
Date
Q1 2026
|
Connor, Clark & Lunn Investment Management Ltd. | Added· Q1 2026 | – | +268K | – | Q1 2026 | |||||
|
Morgan Stanley
· Reduced
Change
−194K
Date
Q1 2026
|
Morgan Stanley | Reduced· Q1 2026 | – | −194K | – | Q1 2026 | |||||
|
UBS Group AG
· Added
Change
+186K
Date
Q1 2026
|
UBS Group AG | Added· Q1 2026 | – | +186K | – | Q1 2026 | |||||
|
Qube Research & Technologies Ltd
· Exited
Change
−166K
Δ Own
−100.0%
Date
Q1 2026
|
Qube Research & Technologies Ltd | Exited· Q1 2026 | – | −166K | −100.0% | Q1 2026 | |||||
|
T. Rowe Price Associates
· Reduced
Change
−165K
Date
Q1 2026
|
T. Rowe Price Associates | Reduced· Q1 2026 | – | −165K | – | Q1 2026 | |||||
|
Wellington Management Group LLP
· New
Change
+156K
Date
Q1 2026
|
Wellington Management Group LLP | New· Q1 2026 | – | +156K | – | Q1 2026 | |||||
|
Woodline Partners LP
· Exited
Change
−150K
Δ Own
−100.0%
Date
Q1 2026
|
Woodline Partners LP | Exited· Q1 2026 | – | −150K | −100.0% | Q1 2026 | |||||
|
Squarepoint Ops LLC
· Added
Change
+134K
Date
Q1 2026
|
Squarepoint Ops LLC | Added· Q1 2026 | – | +134K | – | Q1 2026 | |||||
| Insider | Title | Type | Price | Qty | Value | Owned | ΔOwn | Trade date | Filed date | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Gengos Andrew
· Officer
Grant (A)
650K
|
Gengos Andrew | Officer | Grant (A) | – | 650K | – | 650K | – | Jul 16, 2026 | Jul 17, 2026 | |||||||||
|
Zeskind Benjamin J.
· Director
Buy
+$11K
|
Zeskind Benjamin J. | Director | Buy | $4.56 | +2K | +$11K | 2.3M | +0.1% | Jun 23, 2026 | Jun 24, 2026 | |||||||||
|
Hall Brett Matthew
· Officer
Buy
+$25K
|
Hall Brett Matthew | Officer | Buy | $4.15 | +6K | +$25K | 383K | – | Jun 15, 2026 | Jun 16, 2026 | |||||||||
|
Schall Thomas J.
· Director
Grant (A)
33K
|
Schall Thomas J. | Director | Grant (A) | – | 33K | – | 33K | – | Jun 11, 2026 | Jun 11, 2026 | |||||||||
|
Hausman Diana
· Director
Grant (A)
33K
|
Hausman Diana | Director | Grant (A) | – | 33K | – | 33K | – | Jun 11, 2026 | Jun 11, 2026 | |||||||||
|
Carpenter Robert J.
· Director
Grant (A)
33K
|
Carpenter Robert J. | Director | Grant (A) | – | 33K | – | 33K | – | Jun 11, 2026 | Jun 11, 2026 | |||||||||
|
Keating Laurie
· Director
Grant (A)
33K
|
Keating Laurie | Director | Grant (A) | – | 33K | – | 33K | – | Jun 11, 2026 | Jun 11, 2026 | |||||||||
|
Feinberg Peter
· Director
Grant (A)
33K
|
Feinberg Peter | Director | Grant (A) | – | 33K | – | 33K | – | Jun 11, 2026 | Jun 11, 2026 | |||||||||
|
Neufeld Leah R.
· Officer
Grant (A)
$16K
|
Neufeld Leah R. | Officer | Grant (A) | $4.29 | 4K | $16K | 30K | – | Mar 13, 2026 | Mar 17, 2026 | |||||||||
|
Bookman Michael
· Officer
Grant (A)
176K
|
Bookman Michael | Officer | Grant (A) | – | 176K | – | 176K | – | Feb 3, 2026 | Feb 5, 2026 | |||||||||
|
Brakewood Harold Eugene
· Officer
Grant (A)
140K
|
Brakewood Harold Eugene | Officer | Grant (A) | – | 140K | – | 140K | – | Feb 3, 2026 | Feb 5, 2026 | |||||||||
|
Hall Brett Matthew
· Officer
Grant (A)
344K
|
Hall Brett Matthew | Officer | Grant (A) | – | 344K | – | 344K | – | Feb 3, 2026 | Feb 5, 2026 | |||||||||
|
Matushansky Igor
· Officer
Grant (A)
140K
|
Matushansky Igor | Officer | Grant (A) | – | 140K | – | 140K | – | Feb 3, 2026 | Feb 5, 2026 | |||||||||
|
Morales Mallory
· Officer
Grant (A)
140K
|
Morales Mallory | Officer | Grant (A) | – | 140K | – | 140K | – | Feb 3, 2026 | Feb 5, 2026 | |||||||||
|
Neufeld Leah R.
· Officer
Grant (A)
140K
|
Neufeld Leah R. | Officer | Grant (A) | – | 140K | – | 140K | – | Feb 3, 2026 | Feb 5, 2026 | |||||||||
N
M
A
A
T
U
94 reporting institutions disclosed IMRX position changes in the Q1 2026 snapshot.
For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q1 2026.
An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.
Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.
Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.
A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.