JONATHAN P. MAY - 01 Oct 2025 Form 4 Insider Report for Cannabist Co Holdings Inc. (CBSTF)

Role: Director
Signature: /s/ David Sirolly as attorney-in-fact for Jonathan P. May
Issuer symbol: CBSTF
Transactions as of: 01 Oct 2025
Net transactions value: $0
Form type: 4
Filing time: 03 Oct 2025, 12:55:59 UTC
Previous filing: 26 Sep 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
MAY JONATHAN P	Director	C/O CANNABIST CO HOLDINGS INC., 321 BILLERICA ROAD, CHELMSFORD	/s/ David Sirolly as attorney-in-fact for Jonathan P. May	03 Oct 2025	0001092775

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	CBSTF	Restricted Stock Units	Award	$0	+1,545,455		$0.000000	1,545,455	01 Oct 2025	Common Shares	1,545,455		Direct	F1, F2

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

Explanation of Responses:

Id	Content
F1	Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's common stock.
F2	The RSUs were granted on October 1, 2025, and will vest on the date of the Issuer's 2026 annual meeting. Settlement will occur as soon as administratively feasible following the vesting date.