Siren, L.L.C.
· Exited
Change
−1.5M
Δ Own
−100.0%
Date
Q1 2026
XF
| Investor | Type | Est. change | Change | Δ Own | Date | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Siren, L.L.C.
· Exited
Change
−1.5M
Δ Own
−100.0%
Date
Q1 2026
|
Siren, L.L.C. | Exited· Q1 2026 | – | −1.5M | −100.0% | Q1 2026 | |||||
|
Deep Track Capital, LP
· Added
Change
+1.3M
Date
Q1 2026
|
Deep Track Capital, LP | Added· Q1 2026 | – | +1.3M | – | Q1 2026 | |||||
|
Morgan Stanley
· Added
Change
+1.3M
Date
Q1 2026
|
Morgan Stanley | Added· Q1 2026 | – | +1.3M | – | Q1 2026 | |||||
|
Millennium Management LLC
· Added
Change
+1.2M
Date
Q1 2026
|
Millennium Management LLC | Added· Q1 2026 | – | +1.2M | – | Q1 2026 | |||||
|
Susquehanna International Group, LLP
· Added
Change
+834K
Date
Q1 2026
|
Susquehanna International Group, LLP | Added· Q1 2026 | – | +834K | – | Q1 2026 | |||||
|
Point72 Asset Management, L.P.
· Exited
Change
−808K
Δ Own
−100.0%
Date
Q1 2026
|
Point72 Asset Management, L.P. | Exited· Q1 2026 | – | −808K | −100.0% | Q1 2026 | |||||
|
Saturn V Capital Management LP
· Added
Change
+656K
Date
Q1 2026
|
Saturn V Capital Management LP | Added· Q1 2026 | – | +656K | – | Q1 2026 | |||||
|
Rosalind Advisors, Inc.
· Added
Change
+609K
Date
Q1 2026
|
Rosalind Advisors, Inc. | Added· Q1 2026 | – | +609K | – | Q1 2026 | |||||
|
Vanguard
· Added
Change
+599K
Date
Q1 2026
|
Vanguard | Added· Q1 2026 | – | +599K | – | Q1 2026 | |||||
|
Perceptive Advisors LLC
· Added
Change
+423K
Date
Q1 2026
|
Perceptive Advisors LLC | Added· Q1 2026 | – | +423K | – | Q1 2026 | |||||
|
FMR LLC
· Reduced
Change
−396K
Δ Own
−4.7%
Date
Q1 2026
|
FMR LLC | Reduced· Q1 2026 | – | −396K | −4.7% | Q1 2026 | |||||
|
Silverarc Capital Management, LLC
· Exited
Change
−357K
Δ Own
−100.0%
Date
Q1 2026
|
Silverarc Capital Management, LLC | Exited· Q1 2026 | – | −357K | −100.0% | Q1 2026 | |||||
|
Venrock Adviser, LLC
· New
Change
+331K
Date
Q1 2026
|
Venrock Adviser, LLC | New· Q1 2026 | – | +331K | – | Q1 2026 | |||||
|
UBS Group AG
· Added
Change
+263K
Date
Q1 2026
|
UBS Group AG | Added· Q1 2026 | – | +263K | – | Q1 2026 | |||||
|
Stonepine Capital Management, LLC
· Reduced
Change
−258K
Date
Q1 2026
|
Stonepine Capital Management, LLC | Reduced· Q1 2026 | – | −258K | – | Q1 2026 | |||||
| Insider | Title | Type | Price | Qty | Value | Owned | ΔOwn | Trade date | Filed date | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Gold Kelly
· Director
Grant (A)
110K
|
Gold Kelly | Director | Grant (A) | – | 110K | – | 110K | – | Jul 1, 2026 | Jul 1, 2026 | |||||||||
|
Kirske David
· Officer
Sell
−$36K
|
Kirske David | Officer | Sell | $4.26 | −9K | −$36K | 168K | −4.8% | Jun 30, 2026 | Jul 1, 2026 | |||||||||
|
Kirske David
· CFO
Sell
−$73K
|
Kirske David | CFO | Sell | $4.29 | −17K | −$73K | 176K | – | May 12, 2026 | May 13, 2026 | |||||||||
|
Bridger Gary
· Director
Grant (A)
110K
|
Bridger Gary | Director | Grant (A) | – | 110K | – | 0 | – | Jan 1, 2026 | Jan 7, 2026 | |||||||||
|
De Craecker Francoise
· Director
Grant (A)
110K
|
De Craecker Francoise | Director | Grant (A) | – | 110K | – | 0 | – | Jan 1, 2026 | Jan 5, 2026 | |||||||||
|
Wyzga Michael S.
· Director
Grant (A)
110K
|
Wyzga Michael S. | Director | Grant (A) | – | 110K | – | 0 | – | Jan 1, 2026 | Jan 5, 2026 | |||||||||
|
Stewart Murray
· Director
Grant (A)
110K
|
Stewart Murray | Director | Grant (A) | – | 110K | – | 0 | – | Jan 1, 2026 | Jan 5, 2026 | |||||||||
|
Craig Adam R.
· Director
Grant (A)
2.3M
|
Craig Adam R. | Director | Grant (A) | – | 2.3M | – | 2.3M | – | Oct 29, 2025 | Oct 31, 2025 | |||||||||
|
Volpone John
· Officer
Grant (A)
2.3M
|
Volpone John | Officer | Grant (A) | – | 2.3M | – | 2.3M | – | Oct 29, 2025 | Oct 31, 2025 | |||||||||
|
Kirske David
· Officer
Grant (A)
1.6M
|
Kirske David | Officer | Grant (A) | – | 1.6M | – | 1.6M | – | Oct 29, 2025 | Oct 31, 2025 | |||||||||
|
Craig Adam R.
· Director, Officer
Buy
+$250K
|
Craig Adam R. | Director, Officer | Buy | $2.90 | +86K | +$250K | 376K | – | Oct 23, 2025 | Oct 27, 2025 | |||||||||
|
Volpone John
· Officer
2 operations
819K
|
Volpone John | Officer | 2 operations | – | 819K | – | 529K | – | Aug 14, 2025 | Aug 14, 2025 | |||||||||
|
Craig Adam R.
· Director
2 operations
819K
|
Craig Adam R. | Director | 2 operations | – | 819K | – | 529K | – | Aug 14, 2025 | Aug 14, 2025 | |||||||||
|
Kirske David
· Officer
2 operations
546K
|
Kirske David | Officer | 2 operations | – | 546K | – | 353K | – | Aug 14, 2025 | Aug 14, 2025 | |||||||||
|
Volpone John
· Officer
Grant (A)
1.6M
|
Volpone John | Officer | Grant (A) | – | 1.6M | – | 1.6M | – | Aug 12, 2025 | Aug 14, 2025 | |||||||||
71 reporting institutions disclosed XFOR 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.
