Tcg Crossover Management, LLC
· New
Change
+11.0M
Date
Q1 2026
BC
| Investor | Type | Est. change | Change | Δ Own | Date | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Tcg Crossover Management, LLC
· New
Change
+11.0M
Date
Q1 2026
|
Tcg Crossover Management, LLC | New· Q1 2026 | – | +11.0M | – | Q1 2026 | |||||
|
Vestal Point Capital, LP
· Added
Change
+4.8M
Date
Q1 2026
|
Vestal Point Capital, LP | Added· Q1 2026 | – | +4.8M | – | Q1 2026 | |||||
|
Perceptive Advisors LLC
· Added
Change
+4.3M
Date
Q1 2026
|
Perceptive Advisors LLC | Added· Q1 2026 | – | +4.3M | – | Q1 2026 | |||||
|
Aberdeen Group PLC
· Added
Change
+4.1M
Date
Q1 2026
|
Aberdeen Group PLC | Added· Q1 2026 | – | +4.1M | – | Q1 2026 | |||||
|
Two Sigma Advisers, LP
· Exited
Change
−4.1M
Δ Own
−100.0%
Date
Q1 2026
|
Two Sigma Advisers, LP | Exited· Q1 2026 | – | −4.1M | −100.0% | Q1 2026 | |||||
|
Frazier Life Sciences Management, L.P.
· New
Change
+4.0M
Date
Q1 2026
|
Frazier Life Sciences Management, L.P. | New· Q1 2026 | – | +4.0M | – | Q1 2026 | |||||
|
Kynam Capital Management, LP
· Reduced
Change
−3.7M
Date
Q1 2026
|
Kynam Capital Management, LP | Reduced· Q1 2026 | – | −3.7M | – | Q1 2026 | |||||
|
Bank of America Corp
· Added
Change
+3.6M
Date
Q1 2026
|
Bank of America Corp | Added· Q1 2026 | – | +3.6M | – | Q1 2026 | |||||
|
Rfg Advisory, LLC
· New
Change
+2.9M
Date
Q1 2026
|
Rfg Advisory, LLC | New· Q1 2026 | – | +2.9M | – | Q1 2026 | |||||
|
Baker Bros. Advisors LP
· Exited
Change
−2.8M
Δ Own
−100.0%
Date
Q1 2026
|
Baker Bros. Advisors LP | Exited· Q1 2026 | – | −2.8M | −100.0% | Q1 2026 | |||||
|
Candriam S.c.a.
· New
Change
+2.3M
Date
Q1 2026
|
Candriam S.c.a. | New· Q1 2026 | – | +2.3M | – | Q1 2026 | |||||
|
Qube Research & Technologies Ltd
· Exited
Change
−2.2M
Δ Own
−100.0%
Date
Q1 2026
|
Qube Research & Technologies Ltd | Exited· Q1 2026 | – | −2.2M | −100.0% | Q1 2026 | |||||
|
Susquehanna International Group, LLP
· Added
Change
+2.1M
Date
Q1 2026
|
Susquehanna International Group, LLP | Added· Q1 2026 | – | +2.1M | – | Q1 2026 | |||||
|
Vanguard
· Added
Change
+2.1M
Date
Q1 2026
|
Vanguard | Added· Q1 2026 | – | +2.1M | – | Q1 2026 | |||||
|
Two Sigma Investments, LP
· Added
Change
+1.9M
Δ Own
+41.6%
Date
Q1 2026
|
Two Sigma Investments, LP | Added· Q1 2026 | – | +1.9M | +41.6% | Q1 2026 | |||||
| Insider | Title | Type | Price | Qty | Value | Owned | ΔOwn | Trade date | Filed date | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Milne Jill C.
· Director
2 operations
49K
|
Milne Jill C. | Director | 2 operations | – | 49K | – | 34K | – | Jun 11, 2026 | Jun 15, 2026 | |||||||||
|
Galson Steven K.
· Director
2 operations
49K
|
Galson Steven K. | Director | 2 operations | – | 49K | – | 34K | – | Jun 11, 2026 | Jun 15, 2026 | |||||||||
|
Levin Alan G.
· Director
2 operations
49K
|
Levin Alan G. | Director | 2 operations | – | 49K | – | 34K | – | Jun 11, 2026 | Jun 15, 2026 | |||||||||
|
Frank Steven
· Director
2 operations
49K
|
Frank Steven | Director | 2 operations | – | 49K | – | 34K | – | Jun 11, 2026 | Jun 15, 2026 | |||||||||
|
Sanders Machelle
· Director
2 operations
49K
|
Sanders Machelle | Director | 2 operations | – | 49K | – | 34K | – | Jun 11, 2026 | Jun 15, 2026 | |||||||||
|
Milano Vincent
· Director
2 operations
49K
|
Milano Vincent | Director | 2 operations | – | 49K | – | 34K | – | Jun 11, 2026 | Jun 15, 2026 | |||||||||
|
Stonehouse Jon P.
· Director
2 operations
49K
|
Stonehouse Jon P. | Director | 2 operations | – | 49K | – | 34K | – | Jun 11, 2026 | Jun 15, 2026 | |||||||||
|
McKee Amy E.
· Director
2 operations
49K
|
McKee Amy E. | Director | 2 operations | – | 49K | – | 34K | – | Jun 11, 2026 | Jun 15, 2026 | |||||||||
|
Heggie Theresa
· Director
2 operations
49K
|
Heggie Theresa | Director | 2 operations | – | 49K | – | 34K | – | Jun 11, 2026 | Jun 15, 2026 | |||||||||
|
Milne Jill C.
· Director
Grant (A)
$11K
|
Milne Jill C. | Director | Grant (A) | $8.91 | 1K | $11K | 17K | – | May 29, 2026 | Jun 2, 2026 | |||||||||
|
Stonehouse Jon P.
· Director
Grant (A)
$6K
|
Stonehouse Jon P. | Director | Grant (A) | $8.91 | 631 | $6K | 1.3M | – | May 29, 2026 | Jun 2, 2026 | |||||||||
|
McKee Amy E.
· Director
Grant (A)
$6K
|
McKee Amy E. | Director | Grant (A) | $8.91 | 631 | $6K | 32K | – | May 29, 2026 | Jun 2, 2026 | |||||||||
|
Milano Vincent
· Director
Grant (A)
$10K
|
Milano Vincent | Director | Grant (A) | $8.91 | 1K | $10K | 93K | – | May 29, 2026 | Jun 2, 2026 | |||||||||
|
Frank Steven
· Director
Grant (A)
$11K
|
Frank Steven | Director | Grant (A) | $8.91 | 1K | $11K | 20K | – | May 29, 2026 | Jun 2, 2026 | |||||||||
|
McKee Amy E.
· Director
Sell
−$100K
|
McKee Amy E. | Director | Sell | $8.97 | −11K | −$100K | 31K | – | May 18, 2026 | May 19, 2026 | |||||||||
N
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295 reporting institutions disclosed BCRX 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.