Lorenz Muller - 02 Feb 2026 Form 4/A - Amendment Insider Report for Milestone Pharmaceuticals Inc. (MIST)

Role: Chief Commercial Officer
Signature: /s/ Joseph Oliveto, Attorney-in-Fact
Issuer symbol: MIST
Transactions as of: 02 Feb 2026
Net transactions value: $0
Form type: 4/A - Amendment
Filing time: 05 Feb 2026, 16:30:13 UTC
Date Of Original Report: 04 Feb 2026
Previous filing: 28 Jan 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Muller Lorenz	Chief Commercial Officer	C/O MILESTONE PHARMACEUTICALS INC., 1111 DR. FREDERIK-PHILIPS BLVD, STE 420, MONTREAL, QUEBEC, CANADA	/s/ Joseph Oliveto, Attorney-in-Fact	05 Feb 2026	0001771207

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	MIST	Employee Stock Option (right to buy)	Award	$0	+204,000		$0.000000	204,000	02 Feb 2026	Common Shares	204,000	$1.96	Direct	F1, F2

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

Explanation of Responses:

Id	Content
F1	The exercise price on the initial filings was incorrectly stated.
F2	One-fourth (1/4th) of the shares subject to the option vest on February 2, 2027, and one thirty-sixth (1/36th) of the remaining shares subject to this option shall vest each month thereafter, subject to the Reporting Person continuing to provide service through each such date.