Mineralys Therapeutics proposes sale of 6,348 shares

Mineralys Therapeutics submitted a Form 144 reporting a proposed sale of 6,348 shares of common stock on 05/12/2026, tied to a broker-assisted cashless exercise of employee stock options.

Rhea-AI Filing Summary

Mineralys Therapeutics submitted a Form 144 reporting a proposed sale of 6,348 shares of common stock on 05/12/2026, tied to a broker-assisted cashless exercise of employee stock options. The filing lists a sequence of prior dispositions by David Rodman across February–May 2026, shown as individual sales (examples include 14,058 and 6,348 share lots).

Insights

Securities Attorney

Form 144 records an insider notice of intent to sell shares after option exercise.

The filing documents a proposed sale of 6,348 shares on 05/12/2026 via a broker-assisted cashless exercise. Form 144 is a notice required for resale by affiliates when certain conditions apply.

Timing and execution details are not specified beyond the exercise method; subsequent transaction confirmations will appear in broker reports or Form 4 filings if sales occur.

Key Figures

Proposed sale: 6,348 shares Reported cash value (header): 186,348.35 Example prior sale: 14,058 shares +1 more

4 metrics

Proposed sale 6,348 shares proposed sale on <date>05/12/2026</date> via cashless exercise

Reported cash value (header) 186,348.35 value shown in header line associated with security entry

Example prior sale 14,058 shares listed sale by David Rodman on multiple dates in Feb–Apr 2026

Example prior sale value 184,076.52 dollar amount shown next to a 6,349 share sale line (02/12/2026)

Key Terms

cashless exercise, Form 144, broker-assisted

3 terms

cashless exercise financial

"Broker assisted cashless exercise"

A cashless exercise is a way for an option holder to convert stock options into actual shares without paying the purchase price in cash; instead they immediately give up a portion of the newly issued shares to cover the cost and any withholding taxes. Investors care because this process increases the number of shares available and can slightly dilute existing holdings, while also signaling how insiders or employees are realizing compensation without needing cash — similar to paying for a purchase by handing over part of what you just bought.

Form 144 regulatory

"Securities To Be Sold / Securities Sold During The Past 3 Months"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

broker-assisted financial

"Broker assisted cashless exercise"

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Accepted by SEC EDGAR 05/12/2026 - 05:05 PM EDT Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001672659
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Mineralys Therapeutics, Inc.
SEC File Number	001-41614
Address of Issuer	150 N. RADNOR CHESTER RD. SUITE F200 RADNOR PENNSYLVANIA 19087
Phone	(888) 378-6240
Name of Person for Whose Account the Securities are To Be Sold	Rodman David Malcom
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common stock	Merrill Lynch 225 Liberty St Floor 37 New York NY 10281	6348	186348.35	82498101	05/12/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common stock	05/12/2026	Exercise of employee stock options	Mineralys Therapeutics, Inc.			6348	05/12/2026	Broker assisted cashless exercise

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
David Rodman 150 N. RADNOR CHESTER ROAD SUITE F200 RADNOR PA 19087	Common Stock	02/09/2026	2171	65585.91
David Rodman 150 N. RADNOR CHESTER ROAD SUITE F200 RADNOR PA 19087	Common Stock	02/12/2026	6349	184076.52
David Rodman 150 N. RADNOR CHESTER ROAD SUITE F200 RADNOR PA 19087	Common Stock	02/16/2026	14055	385732.29
David Rodman 150 N. RADNOR CHESTER ROAD SUITE F200 RADNOR PA 19087	Common Stock	02/17/2026	417	11505.03
David Rodman 150 N. RADNOR CHESTER ROAD SUITE F200 RADNOR PA 19087	Common Stock	03/09/2026	2171	58269.64
David Rodman 150 N. RADNOR CHESTER ROAD SUITE F200 RADNOR PA 19087	Common Stock	03/12/2026	6348	173748.15
David Rodman 150 N. RADNOR CHESTER ROAD SUITE F200 RADNOR PA 19087	Common Stock	03/13/2026	14058	369225.07
David Rodman 150 N. RADNOR CHESTER ROAD SUITE F200 RADNOR PA 19087	Common Stock	03/17/2026	417	10696.05
David Rodman 150 N. RADNOR CHESTER ROAD SUITE F200 RADNOR PA 19087	Common Stock	04/09/2026	2170	59414.60
David Rodman 150 N. RADNOR CHESTER ROAD SUITE F200 RADNOR PA 19087	Common Stock	04/13/2026	14058	373086.81
David Rodman 150 N. RADNOR CHESTER ROAD SUITE F200 RADNOR PA 19087	Common Stock	04/15/2026	6348	175585.68
David Rodman 150 N. RADNOR CHESTER ROAD SUITE F200 RADNOR PA 19087	Common Stock	04/17/2026	416	13033.28
David Rodman 150 N. RADNOR CHESTER ROAD SUITE F200 RADNOR PA 19087	Common Stock	05/11/2026	2171	64500.41

144: Remarks and Signature

Remarks
Date of Notice	05/12/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	09/29/2025
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	David Rodman
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)