19 transactions on file, per SEC Form 4 filings.
See CLH superinvestor activity →GERSTENBERG ERIC W
CO-CEO · 2026-08-14
Sold
$803K
Robertson Andrea
director · 2026-08-03
Sold
$248K
MCKIM ALAN S
EXEC CHAIR, CTO. · 2026-07-17
Tax withholding
$393K
GERSTENBERG ERIC W
CO-CEO · 2026-07-01
Tax withholding
$164K
Dugas Eric J.
EVP CHIEF FINANCIAL OFFICER · 2026-07-01
Tax withholding
$130K
Battles Michael Louis
CO-CEO · 2026-07-01
Tax withholding
$300K
CURTIS GEORGE L
EXEC. VICE PRESIDENT (CHESI) · 2026-07-01
Tax withholding
$511K
Gabriel Sharon M.
EVP/CIO (CHESI) · 2026-07-01
Tax withholding
$104K
Weber Brian P
EVP (CHESI) · 2026-07-01
Tax withholding
$237K
Underwood Rebecca
PRESIDENT & EVP FACILITIES · 2026-07-01
Tax withholding
$90K
MCKIM ALAN S
EXEC CHAIR, CTO. · 2026-07-01
Tax withholding
$390K
Geer Charles H. II
EVP, Industrial Services · 2026-07-01
Tax withholding
$12K
GERSTENBERG ERIC W
CO-CEO · 2026-03-18
Sold
$293K
GERSTENBERG ERIC W
CO-CEO · 2026-03-13
Tax withholding
$282K
GERSTENBERG ERIC W
CO-CEO · 2026-03-13
D-Return
2,166 sh
Dugas Eric J.
EVP CHIEF FINANCIAL OFFICER · 2026-03-13
Tax withholding
$182K
Dugas Eric J.
EVP CHIEF FINANCIAL OFFICER · 2026-03-13
D-Return
1,324 sh
GERSTENBERG ERIC W
CO-CEO · 2026-02-23
Sold
$700K
Dugas Eric J.
EVP CHIEF FINANCIAL OFFICER · 2026-02-20
Sold
$784K
Each row links to the underlying SEC filing. Sells are shown for transparency, not as a signal — see the insider trading article for why.
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