Brian Taylor Slingsby - Feb 14, 2023 Form 4 Insider Report for Mineralys Therapeutics, Inc. (MLYS)

Role: Director, 10%+ Owner
Signature: Brian Taylor Slingsby by: /s/ Adam Levy, Attorney-in-fact
Stock symbol: MLYS
Transactions as of: Feb 14, 2023
Transactions value $: $4,000,000
Form type: 4
Date filed: 2/16/2023, 03:54 PM
Previous filing: Feb 9, 2023
Next filing: Jul 14, 2023

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	MLYS	Common Stock	Conversion of derivative security		+4.31M	+93.17%		8.94M	Feb 14, 2023	See Footnote	F1, F2
transaction	MLYS	Common Stock	Purchase	$4M	+250K	+2.79%	$16.00	9.19M	Feb 14, 2023	See Footnote	F2

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	MLYS	Series A Preferred Stock	Conversion of derivative security	$0	-2.17M	-100%	$0.00^*	0	Feb 14, 2023	Common Stock	2.17M		See footnote	F1, F2
transaction	MLYS	Series B Preferred Stock	Conversion of derivative security	$0	-2.14M	-100%	$0.00^*	0	Feb 14, 2023	Common Stock	2.14M		See footnote	F1, F2

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

Explanation of Responses:

Id	Content
F1	Each share of preferred stock of the Issuer automatically converted into shares of common stock on a 10.798-for-one basis (which reflects the reverse stock split effected by the Issuer on February 1, 2023) upon closing of the Issuer's initial public offering.
F2	Represents securities held directly by Catalys Pacific Fund, LP. The general partner of Catalys Pacific Fund, LP is Catalys Pacific Fund GP, LP. Brian Taylor Slingsby is the managing partner of Catalys Pacific, LLC, the general partner of the General Partner. Catalys Pacific, LLC, Catalys Pacific Fund GP, LP and Brian Taylor Slingsby may be deemed to have voting and investment power over the shares held of record by Catalys Pacific Fund, LP. Each of Catalys Pacific, LLC, Catalys Pacific Fund GP, LP and Brian Taylor Slingsby disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

Content

Each share of preferred stock of the Issuer automatically converted into shares of common stock on a 10.798-for-one basis (which reflects the reverse stock split effected by the Issuer on February 1, 2023) upon closing of the Issuer's initial public offering.

Represents securities held directly by Catalys Pacific Fund, LP. The general partner of Catalys Pacific Fund, LP is Catalys Pacific Fund GP, LP. Brian Taylor Slingsby is the managing partner of Catalys Pacific, LLC, the general partner of the General Partner. Catalys Pacific, LLC, Catalys Pacific Fund GP, LP and Brian Taylor Slingsby may be deemed to have voting and investment power over the shares held of record by Catalys Pacific Fund, LP. Each of Catalys Pacific, LLC, Catalys Pacific Fund GP, LP and Brian Taylor Slingsby disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.