Deerfield Management Company, L.P.
· Added
Change
+5.0M
Date
Q1 2026
LR
| Investor | Type | Est. change | Change | Δ Own | Date | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Deerfield Management Company, L.P.
· Added
Change
+5.0M
Date
Q1 2026
|
Deerfield Management Company, L.P. | Added· Q1 2026 | – | +5.0M | – | Q1 2026 | |||||
|
Driehaus Capital Management LLC
· Added
Change
+2.4M
Date
Q1 2026
|
Driehaus Capital Management LLC | Added· Q1 2026 | – | +2.4M | – | Q1 2026 | |||||
|
Rtw Investments, LP
· Reduced
Change
−1.6M
Date
Q1 2026
|
Rtw Investments, LP | Reduced· Q1 2026 | – | −1.6M | – | Q1 2026 | |||||
|
Millennium Management LLC
· Reduced
Change
−1.6M
Date
Q1 2026
|
Millennium Management LLC | Reduced· Q1 2026 | – | −1.6M | – | Q1 2026 | |||||
|
Deep Track Capital, LP
· New
Change
+1.5M
Date
Q1 2026
|
Deep Track Capital, LP | New· Q1 2026 | – | +1.5M | – | Q1 2026 | |||||
|
Dafna Capital Management LLC
· Added
Change
+1.1M
Date
Q1 2026
|
Dafna Capital Management LLC | Added· Q1 2026 | – | +1.1M | – | Q1 2026 | |||||
|
Soleus Capital Management, L.P.
· New
Change
+1.1M
Date
Q1 2026
|
Soleus Capital Management, L.P. | New· Q1 2026 | – | +1.1M | – | Q1 2026 | |||||
|
Aigh Capital Management LLC
· Added
Change
+1.0M
Date
Q1 2026
|
Aigh Capital Management LLC | Added· Q1 2026 | – | +1.0M | – | Q1 2026 | |||||
|
Marshall Wace, LLP
· New
Change
+933K
Date
Q1 2026
|
Marshall Wace, LLP | New· Q1 2026 | – | +933K | – | Q1 2026 | |||||
|
Qube Research & Technologies Ltd
· New
Change
+848K
Date
Q1 2026
|
Qube Research & Technologies Ltd | New· Q1 2026 | – | +848K | – | Q1 2026 | |||||
|
Citadel Advisors LLC
· Reduced
Change
−848K
Δ Own
−62.0%
Date
Q1 2026
|
Citadel Advisors LLC | Reduced· Q1 2026 | – | −848K | −62.0% | Q1 2026 | |||||
|
Woodline Partners LP
· Added
Change
+600K
Date
Q1 2026
|
Woodline Partners LP | Added· Q1 2026 | – | +600K | – | Q1 2026 | |||||
|
Vanguard
· Added
Change
+579K
Date
Q1 2026
|
Vanguard | Added· Q1 2026 | – | +579K | – | Q1 2026 | |||||
|
Gem Investment Advisors, LLC
· Added
Change
+573K
Date
Q1 2026
|
Gem Investment Advisors, LLC | Added· Q1 2026 | – | +573K | – | Q1 2026 | |||||
|
Nuveen, LLC
· Added
Change
+570K
Date
Q1 2026
|
Nuveen, LLC | Added· Q1 2026 | – | +570K | – | Q1 2026 | |||||
| Insider | Title | Type | Price | Qty | Value | Owned | ΔOwn | Trade date | Filed date | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Hamilton Thomas Edward
· Director
Buy
+$167K
|
Hamilton Thomas Edward | Director | Buy | $3.34 | +50K | +$167K | 715K | +7.5% | Jul 6, 2026 | Jul 8, 2026 | |||||||||
|
Flynn James E.
· Director
Grant (A)
55K
|
Flynn James E. | Director | Grant (A) | – | 55K | – | 55K | – | May 19, 2026 | May 20, 2026 | |||||||||
|
Leff Jonathan S.
· Director
Grant (A)
55K
|
Leff Jonathan S. | Director | Grant (A) | – | 55K | – | 55K | – | May 19, 2026 | May 20, 2026 | |||||||||
|
Sherman Jeffrey W.
· Director
Grant (A)
55K
|
Sherman Jeffrey W. | Director | Grant (A) | – | 55K | – | 55K | – | May 19, 2026 | May 20, 2026 | |||||||||
|
Truitt Joseph
· Director
Grant (A)
55K
|
Truitt Joseph | Director | Grant (A) | – | 55K | – | 55K | – | May 19, 2026 | May 20, 2026 | |||||||||
|
Thomas Frank E.
· Director
Grant (A)
55K
|
Thomas Frank E. | Director | Grant (A) | – | 55K | – | 55K | – | May 19, 2026 | May 20, 2026 | |||||||||
|
Hamilton Thomas Edward
· Director
Grant (A)
55K
|
Hamilton Thomas Edward | Director | Grant (A) | – | 55K | – | 55K | – | May 19, 2026 | May 20, 2026 | |||||||||
|
Deerfield Mgmt Hif, L.P.
· Director, 10% Owner, Other
4 operations
+$25M
|
Deerfield Mgmt Hif, L.P. | Director, 10% Owner, Other | 4 operations | $5.00 | +5.0M | +$25M | 10.6M | – | Feb 27, 2026 | Mar 2, 2026 | |||||||||
|
Hamilton Thomas Edward
· Director
Buy
+$500K
|
Hamilton Thomas Edward | Director | Buy | $5.00 | +100K | +$500K | 665K | – | Feb 27, 2026 | Mar 2, 2026 | |||||||||
|
Thomas Frank E.
· Director
Buy
+$25K
|
Thomas Frank E. | Director | Buy | $5.00 | +5K | +$25K | 7K | – | Feb 27, 2026 | Mar 2, 2026 | |||||||||
|
Sherman Jeffrey W.
· Director
Buy
+$25K
|
Sherman Jeffrey W. | Director | Buy | $5.00 | +5K | +$25K | 5K | – | Feb 27, 2026 | Mar 2, 2026 | |||||||||
|
Shankar Gopi
· Officer
2 operations
179K
|
Shankar Gopi | Officer | 2 operations | – | 179K | – | 154K | – | Jan 26, 2026 | Jan 27, 2026 | |||||||||
|
Clayton Russell
· Officer
2 operations
179K
|
Clayton Russell | Officer | 2 operations | – | 179K | – | 154K | – | Jan 26, 2026 | Jan 27, 2026 | |||||||||
|
Ben-Maimon Carole
· Director, Officer
2 operations
701K
|
Ben-Maimon Carole | Director, Officer | 2 operations | – | 701K | – | 601K | – | Jan 26, 2026 | Jan 27, 2026 | |||||||||
|
Celano Michael
· Officer
2 operations
263K
|
Celano Michael | Officer | 2 operations | – | 263K | – | 226K | – | Jan 26, 2026 | Jan 27, 2026 | |||||||||
A
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153 reporting institutions disclosed LRMR 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.