AGIO affiliate files Form 144 to offer 4,007 shares

AGIO submitted a Form 144 notice listing 4,007 shares of Common Stock associated with the vesting of restricted stock units on 07/01/2026.

Rhea-AI Filing Summary

AGIO submitted a Form 144 notice listing 4,007 shares of Common Stock associated with the vesting of restricted stock units on 07/01/2026. The filing notes the securities are to be sold through Morgan Stanley Smith Barney LLC. It also records a prior sale of 2,940 shares on 04/02/2026 for $102,047.40 by Sarah Gheuens.

Insights

Insider Transactions Analyst

Routine affiliate resale notice tied to RSU vesting; prior small open-market sale recorded.

The filing lists 4,007 shares linked to the vesting of restricted stock units scheduled on 07/01/2026 and identifies Morgan Stanley Smith Barney LLC as the broker-dealer. This describes an intended resale by an affiliate, not an issuance by the company.

Cash-flow treatment and whether sales are immediate or subject to conditions are not detailed in the excerpt; subsequent filings or trade reports will show execution details.

Key Figures

Shares linked to RSU vesting: 4,007 shares Prior sale reported: 2,940 shares Proceeds from prior sale: $102,047.40 +1 more

4 metrics

Shares linked to RSU vesting 4,007 shares vesting of restricted stock units on <date>07/01/2026</date>

Prior sale reported 2,940 shares sale on <date>04/02/2026</date> by Sarah Gheuens

Proceeds from prior sale $102,047.40 consideration for 2,940 shares sold on <date>04/02/2026</date>

Broker-dealer Morgan Stanley Smith Barney LLC listed as handling proposed sale

Key Terms

restricted stock units, Form 144, broker-dealer

3 terms

restricted stock units financial

"Vesting of restricted stock units"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

Form 144 regulatory

"Filer Information | 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.

broker-dealer financial

"Morgan Stanley Smith Barney LLC identified as broker-dealer"

A broker-dealer is a licensed firm or individual that both executes trades on behalf of clients (acting as a broker) and buys or sells securities for its own account (acting as a dealer). Investors care because broker-dealers provide the plumbing of markets — they place orders, hold or move cash and securities, offer research or advice, and their stability and fees directly affect trade execution, costs, and the safety of client funds; think of them as a combined travel agent and taxi for your investments.

FAQ

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

What does AGIO's Form 144 say about shares to be sold?

The filing lists 4,007 shares tied to the vesting of restricted stock units scheduled for 07/01/2026. It identifies Morgan Stanley Smith Barney LLC as the broker-dealer for the proposed sale.

Did any affiliate recently sell AGIO shares?

Yes. The filing records a prior sale by Sarah Gheuens of 2,940 shares on 04/02/2026 for $102,047.40, shown in the "Securities Sold During The Past 3 Months" section.

Are the shares being registered by the company in this Form 144?

No. The notice documents an affiliate resale tied to RSU vesting on 07/01/2026; it does not register new shares or state proceeds treatment from the company.

Which broker-dealer is handling the proposed sale?

The broker-dealer listed is Morgan Stanley Smith Barney LLC at 1 New York Plaza, New York, NY. The excerpt shows brokerage involvement but not execution details.

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

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Accepted by SEC EDGAR 07/01/2026 - 04:08 PM 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	0001881190
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	AGIOS PHARMACEUTICALS, INC.
SEC File Number	001-36014
Address of Issuer	88 SIDNEY STREET CAMBRIDGE MASSACHUSETTS 02139
Phone	617-649-8600
Name of Person for Whose Account the Securities are To Be Sold	Gheuens Sarah
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	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza New York NY 10004	4007	150502.92	59471609	07/01/2026	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	07/01/2026	Vesting of restricted stock units	Issuer			4007	07/01/2026	Not applicable

* 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
Sarah Gheuens 88 Sidney Street Cambridge MA 02139	Common Stock	04/02/2026	2940	102047.40

144: Remarks and Signature

Remarks
Date of Notice	07/01/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	07/01/2023
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	William Cook, attorney-in-fact for Sarah Gheuens
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)