MLYS insider sale: CMO disposes 10,369 shares under Rule 10b5-1

Rhea-AI Filing Summary

Mineralys Therapeutics (MLYS) insider activity: The company’s Chief Medical Officer sold 10,369 shares of common stock on 10/15/2025 in an open-market transaction coded “S.” The sale was executed under a Rule 10b5-1 trading plan adopted on October 25, 2024.

The weighted-average price was $43.0111 per share, with individual trades ranging from $42.8000 to $43.1950. Following the transaction, the officer directly beneficially owns 71,155 shares.

Insider Trade Summary

Net Seller: 10,369 shares ($445,982)

Net Sell 1 txn

Insider Rodman David Malcom

Role Chief Medical Officer

Sold 10,369 shs ($446K)

Type	Security	Shares	Price	Value
Sale	Common Stock	10,369	$43.0111	$446K

Holdings After Transaction: Common Stock — 71,155 shares (Direct)

Footnotes (1)

1. These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on October 25, 2024. The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $42.8000 to $43.1950. The Reporting Person undertakes to provide to the Issuer, any securityholder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote (2) to this Form 4.

Form 4 Insider Transactions: What Each Field Means →

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).

X

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^*

Rodman David Malcom

(Last) (First) (Middle)

150 N. RADNOR CHESTER ROAD,

SUITE F200

(Street)

RADNOR PA 19087

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Mineralys Therapeutics, Inc. [ MLYS ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Medical Officer

3. Date of Earliest Transaction (Month/Day/Year)
10/15/2025

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 Stock	10/15/2025		S(1)		10,369	D	$43.0111(2)	71,155	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 transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on October 25, 2024.

2. The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $42.8000 to $43.1950. The Reporting Person undertakes to provide to the Issuer, any securityholder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote (2) to this Form 4.

Remarks:

	/s/ Adam Levy, Attorney-in-fact	10/15/2025
	** 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.

FAQ

What did Mineralys Therapeutics (MLYS) disclose in this Form 4?

An officer sold 10,369 shares of common stock in an open-market transaction on 10/15/2025.

Who was the reporting person in the MLYS Form 4?

The reporting person is an officer serving as Chief Medical Officer.

How many MLYS shares were sold and at what price?

A total of 10,369 shares were sold at a weighted-average price of $43.0111, within a range of $42.8000 to $43.1950.

How many Mineralys shares does the officer own after the sale?

The officer directly beneficially owns 71,155 shares following the reported transaction.

Was the sale made under a 10b5-1 trading plan?

Yes. The transactions were effected pursuant to a Rule 10b5-1 trading plan adopted on October 25, 2024.

What transaction code is listed for the sale?

The transaction is coded S, indicating an open-market or private sale of non-derivative securities.