Gw&k Investment Management, LLC
· Reduced
Change
−855K
Date
Q1 2026
TH
| Investor | Type | Est. change | Change | Δ Own | Date | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Gw&k Investment Management, LLC
· Reduced
Change
−855K
Date
Q1 2026
|
Gw&k Investment Management, LLC | Reduced· Q1 2026 | – | −855K | – | Q1 2026 | |||||
|
Bastion Asset Management Inc.
· New
Change
+210K
Date
Q1 2026
|
Bastion Asset Management Inc. | New· Q1 2026 | – | +210K | – | Q1 2026 | |||||
|
Harvey Partners, LLC
· Added
Change
+187K
Date
Q1 2026
|
Harvey Partners, LLC | Added· Q1 2026 | – | +187K | – | Q1 2026 | |||||
|
Hillsdale Investment Management Inc.
· Added
Change
+179K
Date
Q1 2026
|
Hillsdale Investment Management Inc. | Added· Q1 2026 | – | +179K | – | Q1 2026 | |||||
|
Global Alpha Capital Management Ltd.
· Added
Change
+161K
Date
Q1 2026
|
Global Alpha Capital Management Ltd. | Added· Q1 2026 | – | +161K | – | Q1 2026 | |||||
|
Royce & Associates LP
· Added
Change
+158K
Date
Q1 2026
|
Royce & Associates LP | Added· Q1 2026 | – | +158K | – | Q1 2026 | |||||
|
Ameriprise Financial Inc
· Reduced
Change
−151K
Date
Q1 2026
|
Ameriprise Financial Inc | Reduced· Q1 2026 | – | −151K | – | Q1 2026 | |||||
|
Millennium Management LLC
· Added
Change
+144K
Date
Q1 2026
|
Millennium Management LLC | Added· Q1 2026 | – | +144K | – | Q1 2026 | |||||
|
Qube Research & Technologies Ltd
· Added
Change
+139K
Date
Q1 2026
|
Qube Research & Technologies Ltd | Added· Q1 2026 | – | +139K | – | Q1 2026 | |||||
|
Trigran Investments, Inc.
· Reduced
Change
−115K
Date
Q1 2026
|
Trigran Investments, Inc. | Reduced· Q1 2026 | – | −115K | – | Q1 2026 | |||||
|
Dimensional
· Added
Change
+96K
Date
Q1 2026
|
Dimensional | Added· Q1 2026 | – | +96K | – | Q1 2026 | |||||
|
Envestnet Asset Management Inc
· Reduced
Change
−96K
Date
Q1 2026
|
Envestnet Asset Management Inc | Reduced· Q1 2026 | – | −96K | – | Q1 2026 | |||||
|
Citadel Advisors LLC
· Added
Change
+94K
Δ Own
+79.7%
Date
Q1 2026
|
Citadel Advisors LLC | Added· Q1 2026 | – | +94K | +79.7% | Q1 2026 | |||||
|
Tudor Investment Corp Et Al
· New
Change
+94K
Date
Q1 2026
|
Tudor Investment Corp Et Al | New· Q1 2026 | – | +94K | – | Q1 2026 | |||||
|
UBS Group AG
· Added
Change
+93K
Date
Q1 2026
|
UBS Group AG | Added· Q1 2026 | – | +93K | – | Q1 2026 | |||||
| Insider | Title | Type | Price | Qty | Value | Owned | ΔOwn | Trade date | Filed date | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Washington Kenneth E.
· Director
Grant (A)
4K
|
Washington Kenneth E. | Director | Grant (A) | – | 4K | – | 15K | – | May 14, 2026 | May 15, 2026 | |||||||||
|
Stacey John
· Director
Grant (A)
4K
|
Stacey John | Director | Grant (A) | – | 4K | – | 27K | – | May 14, 2026 | May 15, 2026 | |||||||||
|
Meter Elizabeth
· Director
Grant (A)
4K
|
Meter Elizabeth | Director | Grant (A) | – | 4K | – | 20K | – | May 14, 2026 | May 15, 2026 | |||||||||
|
Kummeth Charles R.
· Director
Grant (A)
4K
|
Kummeth Charles R. | Director | Grant (A) | – | 4K | – | 26K | – | May 14, 2026 | May 15, 2026 | |||||||||
|
Kowalchik Laura Michele
· Director
Grant (A)
4K
|
Kowalchik Laura Michele | Director | Grant (A) | – | 4K | – | 13K | – | May 14, 2026 | May 15, 2026 | |||||||||
|
Hundzinski Ronald T.
· Director
Grant (A)
4K
|
Hundzinski Ronald T. | Director | Grant (A) | – | 4K | – | 22K | – | May 14, 2026 | May 15, 2026 | |||||||||
|
Heinzmann David W.
· Director
Grant (A)
4K
|
Heinzmann David W. | Director | Grant (A) | – | 4K | – | 21K | – | May 14, 2026 | May 15, 2026 | |||||||||
|
Desormiere Sophie
· Director
Grant (A)
4K
|
Desormiere Sophie | Director | Grant (A) | – | 4K | – | 42K | – | May 14, 2026 | May 15, 2026 | |||||||||
|
Nicholas Breisacher
· Officer
Tax withholding or exercise payment (F)
-$3K
|
Nicholas Breisacher | Officer | Tax withholding or exercise payment (F) | $28.64 | -102 | -$3K | 6K | – | Mar 23, 2026 | Mar 25, 2026 | |||||||||
|
Nicholas Breisacher
· Officer
Grant (A)
353
|
Nicholas Breisacher | Officer | Grant (A) | – | 353 | – | 6K | – | Mar 23, 2026 | Mar 25, 2026 | |||||||||
|
Barkas Rafael
· Officer
Tax withholding or exercise payment (F)
-$17K
|
Barkas Rafael | Officer | Tax withholding or exercise payment (F) | $28.64 | -607 | -$17K | 32K | – | Mar 23, 2026 | Mar 25, 2026 | |||||||||
|
Barkas Rafael
· Officer
Grant (A)
2K
|
Barkas Rafael | Officer | Grant (A) | – | 2K | – | 32K | – | Mar 23, 2026 | Mar 25, 2026 | |||||||||
|
Runyon Barbara J.
· Officer
Tax withholding or exercise payment (F)
-$28K
|
Runyon Barbara J. | Officer | Tax withholding or exercise payment (F) | $28.64 | -961 | -$28K | 38K | – | Mar 23, 2026 | Mar 25, 2026 | |||||||||
|
Runyon Barbara J.
· Officer
Grant (A)
2K
|
Runyon Barbara J. | Officer | Grant (A) | – | 2K | – | 39K | – | Mar 23, 2026 | Mar 25, 2026 | |||||||||
|
Wilson Jaymi
· Officer
Tax withholding or exercise payment (F)
-$20K
|
Wilson Jaymi | Officer | Tax withholding or exercise payment (F) | $28.64 | -710 | -$20K | 43K | – | Mar 23, 2026 | Mar 25, 2026 | |||||||||
N
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241 reporting institutions disclosed THRM 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.