STOCK TITAN

Lexeo CEO receives option for 145,500 shares

The option terms set 25% to vest and become exercisable September 24, 2027, with 1/48th vesting monthly thereafter subject to continuous service.

(Neutral)

Sentiment and the balance of points

Rhea-AI Sentiment reads the wording of the document, how positive or negative its language is on a 1 to 5 scale. The balance of points shown with the takes weighs what the document actually discloses, so the two can disagree, for example when a trial that missed its main goal is described in upbeat language.

Form Type
4

Rhea-AI Filing Summary

Lexeo Therapeutics, Inc.’s Chief Executive Officer and director, Richard Nolan Townsend, acquired 2,306 common shares on September 14, 2026, at $2.6440 per share through the 2023 Employee Stock Purchase Plan. His reported common-share holdings after that transaction were 376,778 shares, including 242,911 restricted stock units. On September 24, 2026, he received an option covering 145,500 common shares, with a $3.3900 exercise price and a September 23, 2036 expiration.

Insider Townsend Richard Nolan
Role Chief Executive Officer
Type Security Shares Price Value
Grant/Award Stock Option (right to buy) F3 145,500 $0.00 $0.00
Grant/Award Common Stock F1, F2 2,306 $2.644 $6K
Holdings After Transaction: Stock Option (right to buy) — 145,500 contracts (Direct); Common Stock — 376,778 shares (Direct)
Footnotes (3)
  1. F1. The reporting person is voluntarily reporting the acquisition of shares of the Issuer's common stock pursuant to the Lexeo Therapeutics, Inc. 2023 Employee Stock Purchase Plan. This transaction is exempt under both Rule 16b-3(c) and Rule 16b-3(d).
  2. F2. Includes 242,911 Restricted Stock Units.
  3. F3. 25% of the shares underlying the option vest and become exercisable on September 24, 2027, and 1/48th of the shares underlying the option shall vest in monthly installments thereafter, subject to the Reporting Person's continuous service.
Common shares acquired 2,306 shares Acquired on September 14, 2026, through the 2023 Employee Stock Purchase Plan
Acquisition price $2.6440 per share Price reported for the September 14, 2026 common-share acquisition
Reported common-share holdings 376,778 shares After the September 14, 2026 transaction; includes 242,911 Restricted Stock Units
Restricted Stock Units 242,911 units Included in reported common-share holdings after the September 14, 2026 transaction
Common shares underlying option 145,500 shares Option granted September 24, 2026
Option exercise price $3.3900 per share Option granted September 24, 2026
Initial option vesting 25% Vests and becomes exercisable September 24, 2027
Monthly option vesting 1/48th of underlying shares Vests in monthly installments thereafter, subject to continuous service
Employee Stock Purchase Plan financial
"pursuant to the Lexeo Therapeutics, Inc. 2023 Employee Stock Purchase Plan"
An employee stock purchase plan is a company program that lets workers buy shares through small payroll deductions, often at a discount to the market price and after a set offering period. Think of it like a workplace savings plan that turns into ownership: it encourages employees to share in the company’s success and can create predictable buying or selling of stock that investors watch because it affects supply, demand and employee incentives.
Restricted Stock Units financial
"Includes 242,911 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.
Rule 16b-3(c) regulatory
"exempt under both Rule 16b-3(c) and Rule 16b-3(d)"
An SEC rule that lets corporate insiders avoid automatic "short‑swing" profit recovery when they buy or sell their company’s stock under a pre‑approved, written plan that meets specific conditions. For investors, it matters because it clarifies when insider trades are treated as routine, reducing legal uncertainty and helping distinguish trades made for ordinary compensation or pre‑planned reasons from those that might signal opportunistic or timely insider advantage.
Rule 16b-3(d) regulatory
"exempt under both Rule 16b-3(c) and Rule 16b-3(d)"
Rule 16b-3(d) is a narrow SEC safe-harbor that shields company insiders (officers, directors and large shareholders) from liability for short‑swing profits when their buys or sells of company stock are made under a pre-established, written plan or contract that removes the insider’s ability to time trades. For investors, this matters because it permits predictable, automated insider transactions — like scheduled sales for diversification or payroll withholding — without triggering forced disgorgement, so such planned trades are treated differently from opportunistic insider trading.

FAQ

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

What did LXEO CEO Richard Nolan Townsend acquire?

Richard Nolan Townsend acquired 2,306 common shares on September 14, 2026, at $2.6440 per share through the 2023 Employee Stock Purchase Plan, and received an option for 145,500 common shares on September 24, 2026.

How do Richard Nolan Townsend’s LXEO options vest?

The option covering 145,500 common shares vests 25% and becomes exercisable on September 24, 2027; 1/48th of the underlying shares vests in monthly installments thereafter, subject to his continuous service. The option expires September 23, 2036.

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

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google
Add on Google
Learn about SEC filing dates
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Townsend Richard Nolan

(Last)(First)(Middle)
C/O LEXEO THERAPEUTICS, INC.
345 PARK AVENUE SOUTH, FLOOR 6

(Street)
NEW YORK NEW YORK 10010

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
Lexeo Therapeutics, Inc. [ LXEO ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
XOfficer (give title below)Other (specify below)
Chief Executive Officer
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
09/24/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock09/14/2026AV2,306(1)A$2.644376,778(2)D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Stock Option (right to buy)$3.3909/24/2026A145,500 (3)09/23/2036Common Stock145,500$0145,500D
Explanation of Responses:
1. The reporting person is voluntarily reporting the acquisition of shares of the Issuer's common stock pursuant to the Lexeo Therapeutics, Inc. 2023 Employee Stock Purchase Plan. This transaction is exempt under both Rule 16b-3(c) and Rule 16b-3(d).
2. Includes 242,911 Restricted Stock Units.
3. 25% of the shares underlying the option vest and become exercisable on September 24, 2027, and 1/48th of the shares underlying the option shall vest in monthly installments thereafter, subject to the Reporting Person's continuous service.
/s/ Youjin Choi, Attorney-in-Fact09/28/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

Keep reading