SEC FORM 3 SEC Form 3
FORM 3 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
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1. Name and Address of Reporting Person*
Greenstein Leonard M.

(Last) (First) (Middle)
C/O CARLSMED, INC.
1800 ASTON AVE., SUITE 100

(Street)
CARLSBAD CA 92008

(City) (State) (Zip)
2. Date of Event Requiring Statement (Month/Day/Year)
07/22/2025
3. Issuer Name and Ticker or Trading Symbol
CARLSMED, INC. [ CARL ]
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director 10% Owner
X Officer (give title below) Other (specify below)
CFO, Treasurer
5. If Amendment, Date of Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock 143,369(1) D
Table II - Derivative Securities Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4) 2. Date Exercisable and Expiration Date (Month/Day/Year) 3. Title and Amount of Securities Underlying Derivative Security (Instr. 4) 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 6. Nature of Indirect Beneficial Ownership (Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Stock Option (Right to Buy) (3) 08/21/2033 Common Stock 83,673(2)(3) $1.17(4) D
Explanation of Responses:
1. These shares of common stock are reported after giving effect to the 1-to-5.58 reverse split of the Issuer's common and preferred stock, effected on July 10, 2025 (the "Reverse Split").
2. These options are reported after giving effect to the Reverse Split of the Issuer's common stock.
3. Includes 83,673 stock options convertible into approximately 83,673 shares of the Issuer's common stock, which began to vest on August 14, 2023. 40,093 of these stock options are fully vested and exercisable stock options convertible into approximately 40,093 shares of the Issuer's common stock and 43,580 are unvested stock options convertible into approximately 43,580 shares of the Issuer's common stock and will be fully vested on August 14, 2027.
4. The exercise price has been adjusted to reflect the Reverse Split.
/s/ Leonard Greenstein 07/22/2025
** Signature of Reporting Person Date
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 5 (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).
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