Perceptive Advisors LLC
· Exited
Change
−4.2M
Δ Own
−100.0%
Date
Q1 2026
AL
| Investor | Type | Est. change | Change | Δ Own | Date | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Perceptive Advisors LLC
· Exited
Change
−4.2M
Δ Own
−100.0%
Date
Q1 2026
|
Perceptive Advisors LLC | Exited· Q1 2026 | – | −4.2M | −100.0% | Q1 2026 | |||||
|
Kennedy Capital Management LLC
· Reduced
Change
−1.2M
Date
Q1 2026
|
Kennedy Capital Management LLC | Reduced· Q1 2026 | – | −1.2M | – | Q1 2026 | |||||
|
Ardsley Advisory Partners LP
· Reduced
Change
−500K
Date
Q1 2026
|
Ardsley Advisory Partners LP | Reduced· Q1 2026 | – | −500K | – | Q1 2026 | |||||
|
Deutsche Bank AG
· Reduced
Change
−267K
Date
Q1 2026
|
Deutsche Bank AG | Reduced· Q1 2026 | – | −267K | – | Q1 2026 | |||||
|
BNP Paribas Financial Markets
· Reduced
Change
−234K
Date
Q1 2026
|
BNP Paribas Financial Markets | Reduced· Q1 2026 | – | −234K | – | Q1 2026 | |||||
|
1492 Capital Management LLC
· Exited
Change
−223K
Δ Own
−100.0%
Date
Q1 2026
|
1492 Capital Management LLC | Exited· Q1 2026 | – | −223K | −100.0% | Q1 2026 | |||||
|
D. E. Shaw & Co., Inc.
· Reduced
Change
−197K
Δ Own
−12.3%
Date
Q1 2026
|
D. E. Shaw & Co., Inc. | Reduced· Q1 2026 | – | −197K | −12.3% | Q1 2026 | |||||
|
Bank of America Corp
· Reduced
Change
−195K
Date
Q1 2026
|
Bank of America Corp | Reduced· Q1 2026 | – | −195K | – | Q1 2026 | |||||
|
Wells Fargo & Company
· Reduced
Change
−176K
Date
Q1 2026
|
Wells Fargo & Company | Reduced· Q1 2026 | – | −176K | – | Q1 2026 | |||||
|
Jacobs Levy Equity Management, Inc
· Reduced
Change
−172K
Date
Q1 2026
|
Jacobs Levy Equity Management, Inc | Reduced· Q1 2026 | – | −172K | – | Q1 2026 | |||||
|
Vanguard
· Reduced
Change
−171K
Date
Q1 2026
|
Vanguard | Reduced· Q1 2026 | – | −171K | – | Q1 2026 | |||||
|
Morgan Stanley
· Reduced
Change
−138K
Date
Q1 2026
|
Morgan Stanley | Reduced· Q1 2026 | – | −138K | – | Q1 2026 | |||||
|
Two Sigma Advisers, LP
· Exited
Change
−122K
Δ Own
−100.0%
Date
Q1 2026
|
Two Sigma Advisers, LP | Exited· Q1 2026 | – | −122K | −100.0% | Q1 2026 | |||||
|
Acadian Asset Management LLC
· Reduced
Change
−121K
Date
Q1 2026
|
Acadian Asset Management LLC | Reduced· Q1 2026 | – | −121K | – | Q1 2026 | |||||
|
Point72 Asset Management, L.P.
· Exited
Change
−94K
Δ Own
−100.0%
Date
Q1 2026
|
Point72 Asset Management, L.P. | Exited· Q1 2026 | – | −94K | −100.0% | Q1 2026 | |||||
| Insider | Title | Type | Price | Qty | Value | Owned | ΔOwn | Trade date | Filed date | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Miller-Rich Nancy
· Director
2 operations
73K
|
Miller-Rich Nancy | Director | 2 operations | – | 73K | – | 3K | – | Jun 9, 2026 | Jun 11, 2026 | |||||||||
|
Douglas Richard
· Director
3 operations
92K
|
Douglas Richard | Director | 3 operations | – | 92K | – | 2K | – | Jun 9, 2026 | Jun 11, 2026 | |||||||||
|
Phillips Gary M.
· Director
3 operations
82K
|
Phillips Gary M. | Director | 3 operations | – | 82K | – | 5K | – | Jun 9, 2026 | Jun 11, 2026 | |||||||||
|
Clark William D.
· Director
2 operations
72K
|
Clark William D. | Director | 2 operations | – | 72K | – | 2K | – | Jun 9, 2026 | Jun 11, 2026 | |||||||||
|
Walker Neal
· Director
2 operations
73K
|
Walker Neal | Director | 2 operations | – | 73K | – | 3K | – | Jun 9, 2026 | Jun 11, 2026 | |||||||||
|
Bronstein Ben
· Director
3 operations
80K
|
Bronstein Ben | Director | 3 operations | – | 80K | – | 5K | – | Jun 9, 2026 | Jun 11, 2026 | |||||||||
|
Deptula-Hicks Darlene M.
· Director
2 operations
94K
|
Deptula-Hicks Darlene M. | Director | 2 operations | – | 94K | – | 10K | – | Jun 9, 2026 | Jun 11, 2026 | |||||||||
|
Brady Todd C.
· Director
Buy
+$418K
|
Brady Todd C. | Director | Buy | $1.67 | +250K | +$418K | 1.7M | – | Jun 3, 2026 | Jun 5, 2026 | |||||||||
|
Brady Todd C.
· Director, Officer
2 operations
2.5M
|
Brady Todd C. | Director, Officer | 2 operations | – | 2.5M | – | 632K | – | Mar 27, 2026 | Mar 31, 2026 | |||||||||
|
Douglas Richard
· Director
Buy
+$98K
|
Douglas Richard | Director | Buy | $1.40 | +70K | +$98K | 195K | – | Mar 19, 2026 | Mar 20, 2026 | |||||||||
|
Alfieri Michael
· Officer
Buy
+$7K
|
Alfieri Michael | Officer | Buy | $1.42 | +5K | +$7K | 8K | – | Mar 18, 2026 | Mar 19, 2026 | |||||||||
|
Alfieri Michael
· Officer
Buy
+$13K
|
Alfieri Michael | Officer | Buy | $5.30 | +2K | +$13K | 2K | – | Aug 13, 2025 | Aug 15, 2025 | |||||||||
|
Machatha Stephen
· Officer
Sell
−$114K
|
Machatha Stephen | Officer | Sell | $5.15 | −22K | −$114K | 222K | – | Aug 11, 2025 | Aug 13, 2025 | |||||||||
N
A
M
M
G
A
134 reporting institutions disclosed ALDX 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.