STOCK TITAN

Larimar Therapeutics (LRMR) director purchases 50,000 common shares

Filing Impact
(Moderate)
Filing Sentiment
(Positive)
Form Type
4

Rhea-AI Filing Summary

Larimar Therapeutics director Thomas Edward Hamilton bought additional common stock in the company. He purchased 50,000 shares in an open-market transaction at a weighted average price of $3.3378 per share, with individual trades ranging from $3.33 to $3.35. Following the purchase, he holds 714,798 common shares directly and 159,433 shares indirectly through Post Edison, LLC.

Positive

  • None.

Negative

  • None.
Insider Hamilton Thomas Edward
Role null
Bought 50,000 shs ($167K)
Type Security Shares Price Value
Purchase Common Stock 50,000 $3.3378 $167K
holding Common Stock -- -- --
Holdings After Transaction: Common Stock — 714,798 shares (Direct, null); Common Stock — 159,433 shares (Indirect, Post Edison, LLC)
Footnotes (1)
  1. [object Object]
Shares purchased 50,000 shares Open-market common stock purchase
Weighted average price $3.3378 per share Open-market purchase price
Price range $3.33–$3.35 per share Range of individual trade prices
Direct holdings after transaction 714,798 shares Common stock directly owned by Hamilton
Indirect holdings after transaction 159,433 shares Common stock held through Post Edison, LLC
Net buy shares 50,000 shares Net buy direction in transaction summary
open-market purchase financial
"He purchased 50,000 shares in an open-market transaction at a weighted average price"
An open-market purchase is when an investor or a company buys shares on a public stock exchange at the going market price, rather than through a private deal. It matters to investors because these purchases change how many shares are available, can push the stock price up or signal confidence from large buyers, and often affect per-share metrics like earnings—think of it like someone buying lots of apples off a grocery shelf, reducing supply and potentially raising the price.
weighted average price financial
"The price reported in Column 4 is a weighted average price"
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
indirect ownership financial
"he holds 714,798 common shares directly and 159,433 shares indirectly through Post Edison, LLC"
Common Stock financial
"He purchased 50,000 shares of Larimar Therapeutics common stock"
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.
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FAQ

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

Larimar Therapeutics director Thomas Edward Hamilton reported an open-market purchase of 50,000 shares of common stock. The transaction increased his direct holdings and reflects additional personal exposure to the company’s equity.

At what price did Thomas Edward Hamilton buy Larimar Therapeutics (LRMR) shares?

Hamilton bought the 50,000 shares at a weighted average price of $3.3378 per share. Individual trades were executed in a narrow range between $3.33 and $3.35 per share.

How many Larimar Therapeutics (LRMR) shares does Thomas Edward Hamilton own after the transaction?

After the reported purchase, Hamilton directly owns 714,798 shares of Larimar Therapeutics common stock. He also has indirect ownership of 159,433 shares held through Post Edison, LLC, as disclosed in the filing.

Was the Larimar Therapeutics (LRMR) insider transaction an open-market purchase?

Yes. The transaction is coded as a “P”, meaning an open-market or private purchase of common stock. The Form 4 identifies it specifically as an open-market purchase of 50,000 shares at prices between $3.33 and $3.35.

What does Hamilton’s indirect ownership in Larimar Therapeutics (LRMR) represent?

In addition to his direct holdings, Hamilton is reported with indirect ownership of 159,433 shares of common stock. These shares are held through an entity named Post Edison, LLC, as indicated by the nature of ownership field.
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)
07/06/2026
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 Stock07/06/2026P50,000A$3.3378(1)714,798D
Common Stock159,433IPost Edison, LLC
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
Explanation of Responses:
1. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $3.33 to $3.35, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth herein.
/s/ Jennifer Johansson, Attorney-in-fact07/08/2026
** 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)