BK
| Investor | Type | Est. change | Change | Δ Own | Date | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Mountain Capital Management, LLC
· Exited
Change
−5.2M
Δ Own
−100.0%
Date
Q1 2026
|
Mountain Capital Management, LLC | Exited· Q1 2026 | – | −5.2M | −100.0% | Q1 2026 | |||||
|
Zimmer Partners, LP
· Added
Change
+1.4M
Date
Q1 2026
|
Zimmer Partners, LP | Added· Q1 2026 | – | +1.4M | – | Q1 2026 | |||||
|
Dme Capital Management, LP
· Added
Change
+1.4M
Date
Q1 2026
|
Dme Capital Management, LP | Added· Q1 2026 | – | +1.4M | – | Q1 2026 | |||||
|
Yaupon Capital Management LP
· Added
Change
+1.3M
Date
Q1 2026
|
Yaupon Capital Management LP | Added· Q1 2026 | – | +1.3M | – | Q1 2026 | |||||
|
UBS Group AG
· Added
Change
+627K
Date
Q1 2026
|
UBS Group AG | Added· Q1 2026 | – | +627K | – | Q1 2026 | |||||
|
State Street
· Added
Change
+556K
Date
Q1 2026
|
State Street | Added· Q1 2026 | – | +556K | – | Q1 2026 | |||||
|
Vanguard
· Added
Change
+541K
Date
Q1 2026
|
Vanguard | Added· Q1 2026 | – | +541K | – | Q1 2026 | |||||
|
Arrowstreet Capital, Limited Partnership
· New
Change
+537K
Date
Q1 2026
|
Arrowstreet Capital, Limited Partnership | New· Q1 2026 | – | +537K | – | Q1 2026 | |||||
|
Covalis Capital LLP
· Added
Change
+529K
Date
Q1 2026
|
Covalis Capital LLP | Added· Q1 2026 | – | +529K | – | Q1 2026 | |||||
|
Citadel Advisors LLC
· Added
Change
+486K
Δ Own
+2155.8%
Date
Q1 2026
|
Citadel Advisors LLC | Added· Q1 2026 | – | +486K | +2155.8% | Q1 2026 | |||||
|
Dimensional
· Added
Change
+470K
Date
Q1 2026
|
Dimensional | Added· Q1 2026 | – | +470K | – | Q1 2026 | |||||
|
Aventail Capital Group, LP
· Added
Change
+454K
Date
Q1 2026
|
Aventail Capital Group, LP | Added· Q1 2026 | – | +454K | – | Q1 2026 | |||||
|
Cooper Creek Partners Management LLC
· Added
Change
+416K
Date
Q1 2026
|
Cooper Creek Partners Management LLC | Added· Q1 2026 | – | +416K | – | Q1 2026 | |||||
|
Qube Research & Technologies Ltd
· New
Change
+370K
Date
Q1 2026
|
Qube Research & Technologies Ltd | New· Q1 2026 | – | +370K | – | Q1 2026 | |||||
|
BlackRock
· Added
Change
+353K
Date
Q1 2026
|
BlackRock | Added· Q1 2026 | – | +353K | – | Q1 2026 | |||||
| Insider | Title | Type | Price | Qty | Value | Owned | ΔOwn | Trade date | Filed date | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Seimon Dilanka
· Officer
Grant (A)
$21K
|
Seimon Dilanka | Officer | Grant (A) | $23.08 | 920 | $21K | 56K | +1.7% | Jun 30, 2026 | Jul 1, 2026 | |||||||||
|
Kalnin Christopher P.
· Director
Grant (A)
$19K
|
Kalnin Christopher P. | Director | Grant (A) | $23.08 | 829 | $19K | 1.2M | +0.1% | Jun 30, 2026 | Jul 1, 2026 | |||||||||
|
Ngo Ethan
· Officer
Grant (A)
$9K
|
Ngo Ethan | Officer | Grant (A) | $23.08 | 400 | $9K | 124K | +0.3% | Jun 30, 2026 | Jul 1, 2026 | |||||||||
|
Tameron David
· Officer
Grant (A)
$21K
|
Tameron David | Officer | Grant (A) | $23.08 | 920 | $21K | 63K | +1.5% | Jun 30, 2026 | Jul 1, 2026 | |||||||||
|
Turcotte Barry S.
· Officer
Grant (A)
$15K
|
Turcotte Barry S. | Officer | Grant (A) | $23.08 | 655 | $15K | 23K | +3.0% | Jun 30, 2026 | Jul 1, 2026 | |||||||||
|
Larrick Lindsay B.
· Officer
Other Form 4 events
-46K
|
Larrick Lindsay B. | Officer | Other Form 4 events | – | -46K | – | 94K | – | Jun 11, 2026 | Jun 12, 2026 | |||||||||
|
Mashinski Carla S.
· Director
Grant (A)
7K
|
Mashinski Carla S. | Director | Grant (A) | – | 7K | – | 13K | – | Jun 11, 2026 | Jun 12, 2026 | |||||||||
|
Patel Sunit S.
· Director
Grant (A)
7K
|
Patel Sunit S. | Director | Grant (A) | – | 7K | – | 63K | – | Jun 11, 2026 | Jun 12, 2026 | |||||||||
|
Davis Joseph R.
· Director
Grant (A)
7K
|
Davis Joseph R. | Director | Grant (A) | – | 7K | – | 46K | – | Jun 11, 2026 | Jun 12, 2026 | |||||||||
|
Miller Charles C. III
· Director
Grant (A)
7K
|
Miller Charles C. III | Director | Grant (A) | – | 7K | – | 13K | – | Jun 11, 2026 | Jun 12, 2026 | |||||||||
|
Limpaphayom Kirana
· Director
Grant (A)
7K
|
Limpaphayom Kirana | Director | Grant (A) | – | 7K | – | 7K | – | Jun 11, 2026 | Jun 12, 2026 | |||||||||
|
Jacobsen Eric S.
· Officer
Sell
−$672K
|
Jacobsen Eric S. | Officer | Sell | $26.89 | −25K | −$672K | 228K | – | Jun 1, 2026 | Jun 1, 2026 | |||||||||
|
Seimon Dilanka
· Officer
Tax withholding or exercise payment (F)
-$60K
|
Seimon Dilanka | Officer | Tax withholding or exercise payment (F) | $27.76 | -2K | -$60K | 55K | – | May 14, 2026 | May 14, 2026 | |||||||||
|
Hinojosa Javier
· Officer
Grant (A)
10K
|
Hinojosa Javier | Officer | Grant (A) | – | 10K | – | 97K | – | May 12, 2026 | May 13, 2026 | |||||||||
|
Jacobsen Eric S.
· Officer
Sell
−$774K
|
Jacobsen Eric S. | Officer | Sell | $30.96 | −25K | −$774K | 253K | – | May 1, 2026 | May 4, 2026 | |||||||||
173 reporting institutions disclosed BKV 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.