[Form 4] Waste Connections, Inc. Insider Trading Activity

Waste Connections, Inc. officer Domenico (Dan) Pio, Senior Vice President of Operations, reported acquiring additional company shares through an employee share purchase program.

Rhea-AI Filing Summary

Waste Connections, Inc. officer Domenico (Dan) Pio, Senior Vice President of Operations, reported acquiring additional company shares through an employee share purchase program. On December 31, 2025, he obtained 58 common shares of Waste Connections at a price of $166.59 per share under the company’s 2020 Employee Share Purchase Plan for the July 1, 2025 to December 31, 2025 offering period. Following this transaction, he beneficially owns 6,531 common shares, held directly.

The filing notes that the purchase price was set at 95% of the New York Stock Exchange closing price on December 31, 2025, and that Canadian dollar amounts related to the plan were converted to U.S. dollars using a Bank of Canada exchange rate of CAN $1 = US $.73 on that date.

Insider Trade Summary

Other: 58 shares

Other 1 txn

Insider PIO DOMENIC

Role SR VP Operations

Type	Security	Shares	Price	Value
Other	Common Shares	58	$166.59	$10K

Holdings After Transaction: Common Shares — 6,531 shares (Direct)

Footnotes (2)

1. F1. These shares were acquired under the Waste Connections, Inc. 2020 Employee Share Purchase Plan ("ESPP"), for the offering period of July 1, 2025 to December 31, 2025. In accordance with the ESPP, these shares were acquired at a price equal to 95% of the closing price of the shares on the New York Stock Exchange on December 31, 2025.
2. F2. For purposes of this disclosure, Canadian dollar amounts have been converted to U.S. dollars based on the Bank of Canada daily average exchange rate on December 31, 2025, CAN $1 = US $.73

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Accepted by SEC EDGAR 01/05/2026 - 04:14 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

PIO DOMENIC

(Last) (First) (Middle)

6220 HIGHWAY 7

SUITE 600

(Street)

WOODBRIDGE A6 L4H 4G3

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Waste Connections, Inc. [ WCN ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	SR VP Operations

3. Date of Earliest Transaction (Month/Day/Year)
12/31/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Shares	12/31/2025		J(1)		58	A	$166.59(2)	6,531	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. These shares were acquired under the Waste Connections, Inc. 2020 Employee Share Purchase Plan ("ESPP"), for the offering period of July 1, 2025 to December 31, 2025. In accordance with the ESPP, these shares were acquired at a price equal to 95% of the closing price of the shares on the New York Stock Exchange on December 31, 2025.

2. For purposes of this disclosure, Canadian dollar amounts have been converted to U.S. dollars based on the Bank of Canada daily average exchange rate on December 31, 2025, CAN $1 = US $.73

Remarks:

	Domenico (Dan) Pio	01/05/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.