Jose Otero plans 1,304-share Lexeo stock sale

Lexeo Therapeutics, Inc. (LXEO) has a stockholder, Jose Manuel Otero, filing a notice of proposed sale of company stock under Rule 144.

Rhea-AI Filing Summary

Lexeo Therapeutics, Inc. (LXEO) has a stockholder, Jose Manuel Otero, filing a notice of proposed sale of company stock under Rule 144. The notice covers an intended sale of 1,304 shares of common stock through Fidelity Brokerage Services LLC on or after 08/18/2026.

The shares relate to restricted stock vesting on 08/17/2026 as part of compensation from the issuer. In the past three months, Otero has reported selling 1,302 shares on 05/18/2026 for $6,606.35 and 4,666 shares on 07/01/2026 for $20,919.08. A remark states that the sale includes shares needed to cover a tax obligation arising from settlement of a vested equity award.

Key Figures

Shares proposed to be sold: 1,304 shares Intended sale date: 08/18/2026 Recent sale 1: 1,302 shares for $6,606.35 +2 more

5 metrics

Shares proposed to be sold 1,304 shares Intended Rule 144 sale of Lexeo Therapeutics common stock

Intended sale date 08/18/2026 Proposed date for Rule 144 sale through Fidelity

Recent sale 1 1,302 shares for $6,606.35 Common stock sold on 05/18/2026

Recent sale 2 4,666 shares for $20,919.08 Common stock sold on 07/01/2026

Vesting date 08/17/2026 Restricted stock vesting that underlies the planned sale

Key Terms

Rule 144, restricted stock vesting, vested equity award distribution, attorney-in-fact

4 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

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.

restricted stock vesting financial

"Common | 08/17/2026 | Restricted Stock Vesting | Issuer"

Restricted stock vesting is the timetable and conditions under which shares granted to employees or insiders become fully owned and can be sold, typically requiring continued work or meeting performance goals. It matters to investors because large blocks of shares can become tradable at once, which can change share supply and price, and because vesting aligns insiders’ incentives with the company’s long‑term performance—think of it like a timed unlock that both rewards and locks in key people.

vested equity award distribution financial

"resulting from the settlement of a vested equity award distribution."

attorney-in-fact regulatory

"as attorney-in-fact for Jose M. Otero"

An attorney-in-fact is the person or entity given legal authority through a power of attorney to act on behalf of another for specific tasks, such as signing documents, voting shares, or handling transactions. For investors, this matters because it lets a trusted representative make timely decisions or complete paperwork when the owner cannot, much like handing keys to someone to run errands on your behalf—so checks on scope and limits of that authority are important.

FAQ

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

What does the Form 144 filing for LXEO by Jose Manuel Otero disclose?

The filing discloses that Jose Manuel Otero intends to sell 1,304 shares of Lexeo Therapeutics (LXEO) common stock under Rule 144. The sale will be executed through Fidelity Brokerage Services LLC and is linked to vested equity compensation.

How many Lexeo Therapeutics (LXEO) shares are proposed to be sold in this Form 144?

The notice states an intended sale of 1,304 shares of LXEO common stock. These shares are tied to restricted stock vesting dated 08/17/2026 and are to be sold through Fidelity Brokerage Services LLC on or after 08/18/2026.

What prior Lexeo Therapeutics (LXEO) stock sales by Jose Otero are disclosed?

The filing lists two prior sales: 1,302 shares sold on 05/18/2026 for $6,606.35, and 4,666 shares sold on 07/01/2026 for $20,919.08. These occurred within the three months preceding the new proposed sale.

Why does the Form 144 mention taxes for the LXEO share sale?

The remarks explain that the sale includes an amount of LXEO shares necessary to cover a tax obligation. This tax obligation arises from the settlement of a vested equity award distribution related to the filer’s compensation.

Who is executing the planned Lexeo Therapeutics (LXEO) share sale for Jose Otero?

The shares are to be sold through Fidelity Brokerage Services LLC, listed as the broker. The Form 144 is signed by Corey Walter as a duly authorized representative of Fidelity, acting as attorney-in-fact for Jose M. Otero.

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

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Accepted by SEC EDGAR 08/18/2026 - 03:12 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	0002024096
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	Lexeo Therapeutics, Inc.
SEC File Number	001-41855
Address of Issuer	345 PARK AVENUE SOUTH FLOOR 6 NEW YORK NEW YORK 10010
Phone	(212) 547-9879
Name of Person for Whose Account the Securities are To Be Sold	Otero Jose Manuel
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	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	1304	6464.05	82046255	08/18/2026	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	08/17/2026	Restricted Stock Vesting	Issuer			1304	08/17/2026	Compensation

* 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
Jose M. Otero 345 Park Avenue South Floor 6 New York NY 10010	Common	05/18/2026	1302	6606.35
Jose M. Otero 345 Park Avenue South Floor 6 New York NY 10010	Common	07/01/2026	4666	20919.08

144: Remarks and Signature

Remarks	Sale includes an amount necessary to cover a tax obligation resulting from the settlement of a vested equity award distribution.
Date of Notice	08/18/2026
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/ Corey Walter, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Jose M. Otero
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)