Mineralys Therapeutics (MLYS) Rule 144: Director sales and 2,170-share cashless exercise

Rhea-AI Filing Summary

Mineralys Therapeutics, Inc. filing under Rule 144 discloses an intended sale of 2,170 shares of Common Stock on 04/09/2026 tied to an exercise of employee stock options executed as a broker-assisted cashless exercise. The filing also lists multiple recent open-market dispositions by David Rodman, including sales on 01/14/2026 (11,367 shares for $370,645.39) and 03/13/2026 (14,058 shares for $369,225.07).

The notice is a typical Rule 144 transaction report describing specific shares to be sold and a sequence of recent sales; cash‑flow treatment and remaining holdings are not stated in the excerpt.

Insights

Securities Counsel

Rule 144 sale notice for broker-assisted cashless exercise and recent insider dispositions.

The filing documents a broker-assisted cashless exercise of employee options resulting in 2,170 shares to be sold on 04/09/2026. Such notices are administrative and provide statutory notice of intended resale under Rule 144.

Recent sales by David Rodman are itemized with dates, share counts, and gross proceeds. These entries are transactional records; the excerpt does not state remaining beneficial ownership, trading plans, or use of proceeds. Subsequent filings or Form 4s may show position context.

Key Figures

Shares to be sold: 2,170 shares Example sale — 01/14/2026: 11,367 shares Example sale — 03/13/2026: 14,058 shares +1 more

4 metrics

Shares to be sold 2,170 shares scheduled sale on 04/09/2026 from option exercise

Example sale — 01/14/2026 11,367 shares gross proceeds <money>$370,645.39</money>

Example sale — 03/13/2026 14,058 shares gross proceeds <money>$369,225.07</money>

Example sale — 01/12/2026 6,348 shares gross proceeds <money>$205,142.99</money>

Key Terms

Rule 144, broker-assisted cashless exercise, employee stock options

3 terms

Rule 144 regulatory

"Filing under Rule 144 discloses an intended sale of 2,170 shares"

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

broker-assisted cashless exercise financial

"Exercise of employee stock options ... Broker assisted cashless exercise"

employee stock options financial

"Exercise of employee stock options resulting in 2,170 shares"

Employee stock options are contracts that give workers the right to buy a company's shares at a set price sometime in the future, like a coupon that lets you purchase stock at today’s price later on. Investors care because they align employees’ incentives with company performance and create a potential future claim on shares that can reduce existing owners’ percentage and add to a company’s reported compensation costs.

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

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

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

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	2170	59414.60	82399478	04/09/2026	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	04/09/2026	Exercise of employee stock options	Mineralys Therapeutics, Inc.			2170	04/09/2026	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	01/09/2026	2170	72195.90
David Rodman 150 N. RADNOR CHESTER ROAD SUITE F200 RADNOR PA 19087	Common stock	01/12/2026	6348	205142.99
David Rodman 150 N. RADNOR CHESTER ROAD SUITE F200 RADNOR PA 19087	Common stock	01/13/2026	7709	252469.75
David Rodman 150 N. RADNOR CHESTER ROAD SUITE F200 RADNOR PA 19087	Common stock	01/14/2026	11367	370645.39
David Rodman 150 N. RADNOR CHESTER ROAD SUITE F200 RADNOR PA 19087	Common Stock	01/20/2026	416	13353.60
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

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

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

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What does Mineralys (MLYS) disclose in this Form 144?

The filing notifies an intended sale of 2,170 common shares on 04/09/2026 arising from an employee option exercise via a broker-assisted cashless exercise. It also lists multiple recent sales by a named holder with dates, share counts, and gross proceeds.

Who sold shares in the recent three-month period in the Form 144?

David Rodman is named with multiple open-market dispositions, including 11,367 shares on 01/14/2026 for $370,645.39 and 14,058 shares on 03/13/2026 for $369,225.07. The filing lists each trade date, quantity, and dollar amount.

What is a broker-assisted cashless exercise listed in the filing?

A broker-assisted cashless exercise is an option exercise where a broker facilitates immediate sale of shares to cover option cost and taxes. The filing shows the 2,170-share transaction on 04/09/2026 was completed this way.

Does the Form 144 state how many shares the seller still owns after these sales?

The excerpt does not provide a post-transaction ownership total. It lists the specific shares being sold and past sales with amounts, but remaining beneficial ownership is not included in the provided text.

Are proceeds or cash-flow recipients specified for the 2,170-share sale?

The filing labels the method as a broker-assisted cashless exercise, implying proceeds were used to satisfy exercise/tax obligations, but the excerpt does not explicitly state who received cash or the net proceeds amount.