AGIO Form 144: RSUs Vesting, Proposed Common Stock Sale

AGIO affiliate filed a Form 144 notice for proposed sales of Common Stock tied to the vesting of restricted stock units on 04/02/2026.

Accepted by SEC EDGAR 04/02/2026 - 04:04 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

AGIO affiliate filed a Form 144 notice for proposed sales of Common Stock tied to the vesting of restricted stock units on 04/02/2026. The filing lists quantities and dollar values for recent sales by Tsveta Milanova, including 2,868 shares ($83,057.00) on 03/02/2026 and 2,872 shares ($77,601.00) on 01/05/2026.

Key Figures

Vesting date: 04/02/2026 Reported sale - Mar 2, 2026: 2,868 shares Proceeds - Mar 2, 2026: $83,057.00 +3 more

6 metrics

Vesting date 04/02/2026 Vesting of Restricted Stock Units

Reported sale - Mar 2, 2026 2,868 shares Sale by Tsveta Milanova on 03/02/2026

Proceeds - Mar 2, 2026 $83,057.00 Dollar value tied to 2,868 shares sale on 03/02/2026

Reported sale - Jan 5, 2026 2,872 shares Sale by Tsveta Milanova on 01/05/2026

Proceeds - Jan 5, 2026 $77,601.00 Dollar value tied to 2,872 shares sale on 01/05/2026

Record numeric fields 3262, 111528.00, 58592172 Numeric entries appearing on the filer/security lines

Key Terms

Form 144, Restricted Stock Units, Common Stock

3 terms

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.

Restricted Stock Units financial

"Vesting of Restricted Stock Units | Issuer"

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.

Common Stock market

"Common Stock | Morgan Stanley Smith Barney LLC"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

FAQ

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

What does AGIO's Form 144 disclose about the planned sale?

It discloses a proposed sale of Common Stock tied to RSU vesting on 04/02/2026. The filing lists the security type as Common Stock and notes the event as "Vesting of Restricted Stock Units" for an issuer-tied sale on that date.

Who reported recent securities sold for AGIO in this filing?

The filing shows sales reported by Tsveta Milanova on two dates. It lists 2,868 shares sold on 03/02/2026 and 2,872 shares sold on 01/05/2026 with the associated dollar amounts.

How many shares and dollar amounts are listed for the recent sales?

The filing lists 2,868 shares for $83,057.00 and 2,872 shares for $77,601.00. Each sale row pairs the share count with a dollar value and sale date.

What is the stated reason for the securities to be sold in AGIO's Form 144?

The reason given is "Vesting of Restricted Stock Units." The filing marks the transaction type as tied to RSU vesting and identifies the seller relationship as the issuer.

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

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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	0001957180
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	Milanova Tsveta
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 8th Floor New York NY 10004	3262	111528.00	58592172	04/02/2026	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	04/02/2026	Vesting of Restricted Stock Units	Issuer			3262	04/02/2026	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
Tsveta Milanova 88 Sidney Street Cambridge MA 02139	Common Stock	03/02/2026	2868	83057.00
Tsveta Milanova 88 Sidney Street Cambridge MA 02139	Common Stock	01/05/2026	2872	77601.00

144: Remarks and Signature

Remarks
Date of Notice	04/02/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	03/01/2024
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 Tsveta Milanova
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)