Company · Ownership research

Waste Connections, Inc. WCN

CIK 0001318220

Form 4 transactions dated Oct 1, 2023 to Oct 15, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

This page lists 30 of 257 rows; the complete set is available through the API.

Insider filings on file run through Aug 21, 2026.

Insider purchases & sales

Purchased: $7.61M
Sold: $28.31M

Oct 1, 2023 – Aug 21, 2026
Available records · partial months are marked ·

Insiders in this window

202510 of 13 preview events

Date	Insider	Activity	Trade value (USD)	% of prior holding
Dec 10, 2025	NIELSEN III ROBERT SR VP Operations	Sale	$335.18K 2,000 shares sold	61.54% sold Direct holding	▾
Oct 28, 2025	GUILLET EDWARD E Director	Sale	$1.57M 9,000 shares sold	37.68% sold Direct holding	▾
Aug 12, 2025	Shea Patrick James Exec VP, General Counsel & Sec	Sale	$942.26K 5,000 shares sold	19.48% sold Direct holding	▾
Aug 8, 2025	NIELSEN III ROBERT SR VP Operations	Sale	$190.00K 1,000 shares sold	23.53% sold Direct holding	▾
Jul 29, 2025	Netherton Susan SR VP People, Training & Dev	Sale	$286.68K 1,500 shares sold	11.34% sold Direct holding	▾
May 23, 2025	NIELSEN III ROBERT SR VP Operations	Sale	$190.97K 973 shares sold	18.63% sold Direct holding	▾
Mar 10, 2025	CHAMBLISS DARRELL W EVP & COO	Sale	$2.55M 13,566 shares sold	12.50% sold Direct holding	▾
Mar 4, 2025	NIELSEN III ROBERT SR VP Operations	Sale	$193.00K 1,000 shares sold	16.07% sold Direct holding	▾
Mar 4, 2025	LITTLE JAMES Executive VP Engineering	Sale	$806.48K 4,200 shares sold	12.01% sold Direct holding	▾
Mar 3, 2025	PIO DOMENIC SR VP Operations	Sale	$1.93M 10,000 shares sold	61.00% sold Direct holding	▾

Showing 13 / 13 record groups in 2025. The complete set is available through the API.

Waste Connections, Inc. · WCN

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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 13 of 13 purchase / sale groups and 30 of 257 other groups; the totals and the monthly series cover the whole window.

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

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Sources, coverage & how to read this data

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. Share totals are on today's split-adjusted basis. 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.