Form 144: 16,665 Shares Proposed Sale via Option Exercise

Morgan Stanley Smith Barney LLC filed a Form 144 notice to sell 16,665 shares of Common Stock pursuant to a stock option exercise to be effected on 06/23/2026 for cash.

Rhea-AI Filing Summary

Morgan Stanley Smith Barney LLC filed a Form 144 notice to sell 16,665 shares of Common Stock pursuant to a stock option exercise to be effected on 06/23/2026 for cash.

The excerpt also lists three sales by Edmund Dunn during April 2026: 18,683 shares on 04/16/2026 for $345,635.50, 16,687 shares on 04/13/2026 for $300,366.00, and 26,117 shares on 04/08/2026 for $450,622.72.

Insights

Securities Compliance Counsel

Notice of proposed resale tied to an option exercise; prior April sales are documented.

The filing shows a proposed resale of 16,665 shares via a stock option exercise dated 06/23/2026. The method of settlement is stated as cash, and the transaction is presented as a Form 144 notice.

Prior transactions by Edmund Dunn in April 2026 are listed with exact share counts and gross proceeds. Cash‑flow treatment and any lockup/transfer restrictions are not detailed in the excerpt.

Key Figures

Proposed shares to be sold: 16,665 shares Sale on 04/08/2026: 26,117 shares Sale on 04/13/2026: 16,687 shares +1 more

4 metrics

Proposed shares to be sold 16,665 shares stock option exercise on 06/23/2026

Sale on 04/08/2026 26,117 shares Edmund Dunn sale for $450,622.72 on 04/08/2026

Sale on 04/13/2026 16,687 shares Edmund Dunn sale for $300,366.00 on 04/13/2026

Sale on 04/16/2026 18,683 shares Edmund Dunn sale for $345,635.50 on 04/16/2026

Key Terms

Form 144, stock option exercise, cash settlement

3 terms

Form 144 regulatory

"144: Filer Information"

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.

stock option exercise financial

"Securities To Be Sold | Stock Option Exercise"

A stock option exercise is the act of using a previously granted right to buy shares of a company's stock at a specific, predetermined price by paying that price and receiving the shares. It matters to investors because exercising changes who owns the shares (which can dilute existing ownership), can trigger taxable events and shift potential gains or losses, and affects voting power and the company’s outstanding share count—like turning a voucher into an actual product that becomes part of circulating supply.

cash settlement financial

"06/23/2026 | Stock Option Exercise | Issuer | Cash"

Cash settlement is a process where, instead of exchanging physical assets like stocks or commodities, the parties involved settle the difference in value with money after a contract ends. For investors, it simplifies transactions by avoiding the need to handle or deliver the actual asset, making it quicker and more convenient to complete trades. This method ensures a straightforward way to settle agreements based on their final value.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does the Form 144 filed mention for GLUE?

It notifies a proposed sale of 16,665 shares by broker/issuer via a stock option exercise to be effected on 06/23/2026 for cash. The filing is a notice, not a trade report.

Who sold shares in the past three months according to the excerpt?

The excerpt lists Edmund Dunn as selling shares: 26,117 shares on 04/08/2026, 16,687 shares on 04/13/2026, and 18,683 shares on 04/16/2026 with the reported gross proceeds shown.

What gross proceeds are shown for the April 2026 sales?

The excerpt reports proceeds of $450,622.72 for 04/08/2026, $300,366.00 for 04/13/2026, and $345,635.50 for 04/16/2026, corresponding to the listed share sales.

Does the Form 144 confirm the sale has completed?

No. The Form 144 in the excerpt is a notice of a proposed sale dated 06/23/2026 tied to a stock option exercise and indicates intended cash settlement; it does not confirm completion.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 06/23/2026 - 04:02 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	0001989401
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	MONTE ROSA THERAPEUTICS, INC.
SEC File Number	001-40522
Address of Issuer	321 Harrison Avenue Suite 900 Boston MASSACHUSETTS 02118
Phone	617-949-2643
Name of Person for Whose Account the Securities are To Be Sold	EDMUND DUNN
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	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	16665	344985.50	84479418	06/23/2026	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	06/23/2026	Stock Option Exercise	Issuer			16665	06/23/2026	Cash

* 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
EDMUND DUNN 321 Harrison Avenue Suite 900 Boston MA 02118	Common	04/16/2026	18683	345635.50
EDMUND DUNN 321 Harrison Avenue Suite 900 Boston MA 02118	Common	04/13/2026	16687	300366.00
EDMUND DUNN 321 Harrison Avenue Suite 900 Boston MA 02118	Common	04/08/2026	26117	450622.72

144: Remarks and Signature

Remarks
Date of Notice	06/23/2026
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	/s/ Edmund Dunn
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)