Sunriver Management LLC
· Exited
−$34M
Change
−6.1M
Δ Own
−100.0%
Date
Q1 2026
NA
| Investor | Type | Est. change | Change | Δ Own | Date | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Sunriver Management LLC
· Exited
−$34M
Change
−6.1M
Δ Own
−100.0%
Date
Q1 2026
|
Sunriver Management LLC | Exited· Q1 2026 | −$34M | −6.1M | −100.0% | Q1 2026 | |||||
|
Centerbook Partners LP
· Exited
−$6.1M
Change
−1.1M
Δ Own
−100.0%
Date
Q1 2026
|
Centerbook Partners LP | Exited· Q1 2026 | −$6.1M | −1.1M | −100.0% | Q1 2026 | |||||
|
Ameriprise Financial Inc
· Reduced
−$3.9M
Change
−697K
Date
Q1 2026
|
Ameriprise Financial Inc | Reduced· Q1 2026 | −$3.9M | −697K | – | Q1 2026 | |||||
|
Edgestream Partners, L.P.
· Reduced
−$3.7M
Change
−664K
Date
Q1 2026
|
Edgestream Partners, L.P. | Reduced· Q1 2026 | −$3.7M | −664K | – | Q1 2026 | |||||
|
Two Sigma Advisers, LP
· Exited
−$2.3M
Change
−405K
Δ Own
−100.0%
Date
Q1 2026
|
Two Sigma Advisers, LP | Exited· Q1 2026 | −$2.3M | −405K | −100.0% | Q1 2026 | |||||
|
Herald Investment Management Ltd
· Reduced
−$2.0M
Change
−350K
Date
Q1 2026
|
Herald Investment Management Ltd | Reduced· Q1 2026 | −$2.0M | −350K | – | Q1 2026 | |||||
|
Arrowmark Colorado Holdings LLC
· Reduced
−$1.8M
Change
−331K
Date
Q1 2026
|
Arrowmark Colorado Holdings LLC | Reduced· Q1 2026 | −$1.8M | −331K | – | Q1 2026 | |||||
|
Millennium Management LLC
· Reduced
−$1.3M
Change
−231K
Date
Q1 2026
|
Millennium Management LLC | Reduced· Q1 2026 | −$1.3M | −231K | – | Q1 2026 | |||||
|
Citadel Advisors LLC
· Reduced
−$1.2M
Change
−212K
Δ Own
−58.4%
Date
Q1 2026
|
Citadel Advisors LLC | Reduced· Q1 2026 | −$1.2M | −212K | −58.4% | Q1 2026 | |||||
|
Marshall Wace, LLP
· Reduced
−$1.0M
Change
−186K
Date
Q1 2026
|
Marshall Wace, LLP | Reduced· Q1 2026 | −$1.0M | −186K | – | Q1 2026 | |||||
|
Verition Fund Management LLC
· Exited
−$454K
Change
−81K
Δ Own
−100.0%
Date
Q1 2026
|
Verition Fund Management LLC | Exited· Q1 2026 | −$454K | −81K | −100.0% | Q1 2026 | |||||
|
Walleye Capital LLC
· Exited
−$426K
Change
−76K
Δ Own
−100.0%
Date
Q1 2026
|
Walleye Capital LLC | Exited· Q1 2026 | −$426K | −76K | −100.0% | Q1 2026 | |||||
|
Barclays PLC
· Reduced
−$424K
Change
−76K
Date
Q1 2026
|
Barclays PLC | Reduced· Q1 2026 | −$424K | −76K | – | Q1 2026 | |||||
|
SG Americas Securities, LLC
· Exited
−$419K
Change
−75K
Δ Own
−100.0%
Date
Q1 2026
|
SG Americas Securities, LLC | Exited· Q1 2026 | −$419K | −75K | −100.0% | Q1 2026 | |||||
|
Engineers Gate Manager LP
· Reduced
−$398K
Change
−71K
Date
Q1 2026
|
Engineers Gate Manager LP | Reduced· Q1 2026 | −$398K | −71K | – | Q1 2026 | |||||
| Insider | Title | Type | Price | Qty | Value | Owned | ΔOwn | Trade date | Filed date | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Slta IV (gp), L.L.C.
· Director
Grant (A)
104K
|
Slta IV (gp), L.L.C. | Director | Grant (A) | – | 104K | – | 352K | – | May 28, 2026 | Jun 1, 2026 | |||||||||
|
Widmann Michael A.
· Director
Grant (A)
52K
|
Widmann Michael A. | Director | Grant (A) | – | 52K | – | 0 | – | May 28, 2026 | Jun 1, 2026 | |||||||||
|
Bock William G.
· Director
Grant (A)
52K
|
Bock William G. | Director | Grant (A) | – | 52K | – | 168K | – | May 28, 2026 | Jun 1, 2026 | |||||||||
|
Lewis Darryl M.
· Director
Grant (A)
52K
|
Lewis Darryl M. | Director | Grant (A) | – | 52K | – | 148K | – | May 28, 2026 | Jun 1, 2026 | |||||||||
|
McMartin James Cameron
· Director
Grant (A)
52K
|
McMartin James Cameron | Director | Grant (A) | – | 52K | – | 148K | – | May 28, 2026 | Jun 1, 2026 | |||||||||
|
Pulvermueller Patrick Michael
· Director
Grant (A)
52K
|
Pulvermueller Patrick Michael | Director | Grant (A) | – | 52K | – | 100K | – | May 28, 2026 | Jun 1, 2026 | |||||||||
|
Pai Kathleen
· Officer
Tax withholding or exercise payment (F)
-$9K
|
Pai Kathleen | Officer | Tax withholding or exercise payment (F) | $3.32 | -3K | -$9K | 621K | – | May 15, 2026 | May 19, 2026 | |||||||||
|
Stagno Christopher
· Officer
Tax withholding or exercise payment (F)
-$6K
|
Stagno Christopher | Officer | Tax withholding or exercise payment (F) | $3.32 | -2K | -$6K | 72K | – | May 15, 2026 | May 19, 2026 | |||||||||
|
Pagliuca John
· Director
Tax withholding or exercise payment (F)
-$71K
|
Pagliuca John | Director | Tax withholding or exercise payment (F) | $3.32 | -21K | -$71K | 2.0M | – | May 15, 2026 | May 19, 2026 | |||||||||
|
O'Brien Tim James
· CFO
Tax withholding or exercise payment (F)
-$32K
|
O'Brien Tim James | CFO | Tax withholding or exercise payment (F) | $3.32 | -10K | -$32K | 775K | – | May 15, 2026 | May 19, 2026 | |||||||||
|
Adler Michael I.
· Officer
Tax withholding or exercise payment (F)
-$15K
|
Adler Michael I. | Officer | Tax withholding or exercise payment (F) | $3.32 | -5K | -$15K | 605K | – | May 15, 2026 | May 19, 2026 | |||||||||
|
Anastos Peter C.
· Officer
Tax withholding or exercise payment (F)
-$10K
|
Anastos Peter C. | Officer | Tax withholding or exercise payment (F) | $3.32 | -3K | -$10K | 461K | – | May 15, 2026 | May 19, 2026 | |||||||||
|
Colletti Frank
· Officer
Tax withholding or exercise payment (F)
-$25K
|
Colletti Frank | Officer | Tax withholding or exercise payment (F) | $3.32 | -8K | -$25K | 553K | – | May 15, 2026 | May 19, 2026 | |||||||||
|
Colletti Frank
· Officer
Grant (A)
70K
|
Colletti Frank | Officer | Grant (A) | – | 70K | – | 561K | – | Feb 25, 2026 | Feb 27, 2026 | |||||||||
|
Stagno Christopher
· Officer
Grant (A)
30K
|
Stagno Christopher | Officer | Grant (A) | – | 30K | – | 74K | – | Feb 25, 2026 | Feb 27, 2026 | |||||||||
N
A
M
M
G
A
223 reporting institutions disclosed NABL 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.