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Larimar Therapeutics (LRMR) director gets 55,150 stock options at $3.33 strike

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Larimar Therapeutics director Thomas Edward Hamilton received a grant of stock options covering 55,150 shares of common stock. The options have an exercise price of $3.33 per share and expire on May 19, 2036. They vest on the earlier of May 19, 2027 or the company’s next annual stockholder meeting, subject to his continued service on the board. Following this grant, he holds 55,150 options directly.

Positive

  • None.

Negative

  • None.
Insider Hamilton Thomas Edward
Role null
Type Security Shares Price Value
Grant/Award Stock Option (Right to Buy) 55,150 $0.00 --
Holdings After Transaction: Stock Option (Right to Buy) — 55,150 shares (Direct, null)
Footnotes (1)
  1. [object Object]
Options granted 55,150 options Grant of stock options to director
Exercise price $3.33 per share Stock option strike price
Expiration date May 19, 2036 Option term end date
Post-transaction options held 55,150 options Total derivative holdings after grant
Vesting date trigger Earlier of May 19, 2027 or next annual meeting Vesting condition subject to continued board service
Stock Option (Right to Buy) financial
"security_title: "Stock Option (Right to Buy)""
Grant, award, or other acquisition financial
"transaction_code_description: "Grant, award, or other acquisition""
exercise price financial
"conversion_or_exercise_price: "3.3300""
The exercise price is the fixed amount at which you can buy or sell an asset, like a stock, when using an options contract. It matters because it helps determine whether exercising the option will be profitable or not, depending on the current market price. Think of it as the set price you agree on today to buy or sell later.
Board of Directors financial
"subject to the Reporting Person's continued service on the Board of Directors of the Company"
The Board of Directors is a group of people chosen by a company's owners to help make big decisions and oversee how the company is run. They act like a team of advisors or managers, making sure the company stays on track and meets its goals. Their choices can influence the company's success and how it grows.
vest financial
"The options vest on the earlier of (a) May 19, 2027 or (b) the date of the Company's next annual meeting"
A vest is the process by which an employee earns the right to receive certain benefits or ownership interests, such as stock or retirement funds, over time. It’s similar to earning a reward gradually, ensuring that the benefit becomes fully yours only after a set period or meeting specific conditions. This makes it important for investors because it determines when they can actually claim or use those benefits.
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*
Hamilton Thomas Edward

(Last)(First)(Middle)
C/O LARIMAR THERAPEUTICS, INC.
THREE BALA PLAZA EAST, SUITE 506

(Street)
BALA CYNWYD PENNSYLVANIA 19004

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
Larimar Therapeutics, Inc. [ LRMR ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
05/19/2026
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
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)$3.3305/19/2026A55,150 (1)05/19/2036Common Stock55,150$055,150D
Explanation of Responses:
1. The options vest on the earlier of (a) May 19, 2027 or (b) the date of the Company's next annual meeting of stockholders, in each case subject to the Reporting Person's continued service on the Board of Directors of the Company.
/s/ Jennifer Johansson, Attorney-in-fact05/20/2026
** 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)

FAQ

What insider transaction did Larimar Therapeutics (LRMR) report for Thomas Edward Hamilton?

Larimar Therapeutics reported that director Thomas Edward Hamilton received a grant of stock options for 55,150 shares of common stock. The grant is classified as a “Grant, award, or other acquisition” and represents a compensation-related award rather than an open-market purchase or sale.

What are the key terms of the 55,150 stock options granted at Larimar Therapeutics (LRMR)?

The grant covers 55,150 stock options with an exercise price of $3.33 per share and an expiration date of May 19, 2036. These options give the director the right to buy Larimar common stock at $3.33 if and when they vest and are exercised.

When do Thomas Edward Hamilton’s Larimar (LRMR) stock options vest?

The options vest on the earlier of May 19, 2027 or the date of Larimar’s next annual meeting of stockholders. Vesting is conditioned on Hamilton’s continued service on the company’s Board of Directors through that vesting date, according to the footnote disclosure.

Is the Larimar (LRMR) Form 4 transaction a market purchase or sale of shares?

No. The Form 4 reports a grant of derivative securities, specifically stock options classified as a grant or award acquisition. The transaction does not involve an open-market buy or sell of common stock; it reflects compensation provided in option form.

How many Larimar (LRMR) options does Thomas Edward Hamilton hold after this grant?

Following the reported transaction, Hamilton holds 55,150 stock options directly, as shown by the total shares following the transaction. These options are derivative securities tied to Larimar common stock and are subject to the vesting schedule described in the footnote.