Company · Ownership research

CASELLA WASTE SYSTEMS INC CWST

CIK 0000911177

Form 4 transactions dated Sep 1, 2023 to Sep 25, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

Insider filings on file run through 2026-09-03.

Insider purchases & sales

Purchased: $0.00
Sold: $28.16M

Sep 1, 2023 – Sep 3, 2026
Available records · partial months are marked ·

202610 of 22 preview events

Date	Insider	Activity	Trade value (USD)	% of prior holding
2026-09-03	BURKE MICHAEL K Director	Sale	$104.79K 1,100 shares sold	7.46% sold Direct holding	▾
2026-08-26	BURKE MICHAEL K Director	Sale	$102.29K 1,100 shares sold	6.94% sold Direct holding	▾
2026-08-14	CASELLA DOUGLAS R VICE CHAIRMAN, BD OF DIRECTORS · Director	Sale	$122.37K 1,343 shares sold	1.47% sold Direct holding	▾
2026-08-13	CASELLA DOUGLAS R VICE CHAIRMAN, BD OF DIRECTORS · Director	Sale	$1.38M 15,157 shares sold	14.21% sold Direct holding	▾
2026-05-26	BURKE MICHAEL K Director	Sale	$201.83K 2,305 shares sold	14.10% sold Direct holding	▾
2026-05-19	Coletta Edmond PRESIDENT & CEO	Sale	$1.12M 12,500 shares sold	8.19% sold Direct holding	▾
2026-03-16	Steves Sean Sr VP & COO of SW Ops	Sale	$17.30K 197 shares sold	2.06% sold Direct holding	▾
2026-03-16	Drohan Kevin VP & CHIEF ACCOUNTING OFFICER	Sale	$7.46K 85 shares sold	1.07% sold Direct holding	▾
2026-03-16	Sayward Shelley E. SENIOR VP & GENERAL COUNSEL	Sale	$31.76K 362 shares sold	1.26% sold Direct holding	▾
2026-03-16	Helgeson Bradford John Executive VP and CFO	Sale	$35.53K 405 shares sold	5.23% sold Direct holding	▾

Showing 22 / 22 record groups in 2026. The complete set is available through the API.

CASELLA WASTE SYSTEMS INC · CWST

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The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. For the year shown, this page lists 22 of 22 purchase / sale groups and 27 of 27 other groups; the totals and the monthly series cover the whole window.

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{"ticker":"CWST","transaction_code":["P","S"],"transaction_form_type":"4","page_size":20}

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Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.

Non-cancelled, non-derivative purchase (P) and sale (S) rows dated inside the public window, as reported. Includes open-market and private transactions. Data after the latest filing is not asserted complete and is not zero-filled. A grouped event shares filing, transaction date, security, code, direction, ownership bucket and source. Derivative groups also match underlying security, exercise price, exercise/expiration dates and footnote references. Reported rows are retained; P/S price lots can be grouped. Post-transaction balances are never summed.