Mary Anne Whitney - 18 Feb 2026 Form 4 Insider Report for Waste Connections, Inc. (WCN)

Role: Executive Vice President & CFO
Signature: Mary Anne Whitney
Issuer symbol: WCN
Transactions as of: 18 Feb 2026
Net transactions value: -$92,122
Form type: 4
Filing time: 20 Feb 2026, 16:11:49 UTC
Previous filing: 18 Feb 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Whitney Mary Anne	Executive Vice President & CFO	3 WATERWAY SQUARE PLACE, SUITE 110, THE WOODLANDS	Mary Anne Whitney	20 Feb 2026	0001544202

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	WCN	Common Shares	Options Exercise	$0	+1,436	+2.3%	$0.000000	63,001	18 Feb 2026	Direct
transaction	WCN	Common Shares	Tax liability	$92,122	-566	-0.9%	$162.76	62,435	18 Feb 2026	Direct	F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	WCN	Restricted Share Units	Options Exercise	$0	-1,436	-100%	$0.000000	0	18 Feb 2026	Common Shares	1,436	$0.000000	Direct	F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents shares withheld by the Issuer in satisfaction of the applicable withholding taxes due in connection with the vesting of restricted share units and delivery of the converted common shares.
F2	Represents the conversion upon vesting of restricted share units into common shares of the Issuer. The restricted share units were awarded on February 18, 2022 and vest in four equal annual installments. The common shares are reported in Table 1.