SEC FORM 3

SEC FORM 3SEC 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^*

Bertolini Jeffrey

(Last)

(First)

(Middle)

1800 ASTON AVENUE

SUITE 100

(Street)

CARLSBAD

CALIFORNIA

92008

(City)

(State)

(Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
09/08/2026

3. Issuer Name and Ticker or Trading Symbol
CARLSMED, INC. [ CARL ]

3a. Foreign Trading Symbol

5. If Amendment, Date of Original Filed (Month/Day/Year)

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	Chief Operating Officer

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	22,489⁽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)
1. Title of Derivative Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	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)
Stock Option (Right to Buy)	⁽²⁾	07/21/2035	Common Stock	35,714	$15	D
Stock Option (Right to Buy)	⁽³⁾	04/09/2035	Common Stock	22,402	$5.92	D
Stock Option (Right to Buy)	⁽⁴⁾	11/12/2034	Common Stock	6,068	$2.23	D

Explanation of Responses:

1. Constitutes an award of restricted stock units ("RSUs") for which the Reporting Person is entitled to receive one (1) share of the Issuer's Common Stock for each RSU upon vesting. The RSUs will vest in three equal annual installments beginning on the first anniversary of the grant date, January 28, 2026, subject to the Reporting Person's continued service through each such vesting date.

2. Includes 35,714 stock options exercisable into 35,714 shares of the Issuer's common stock, which began to vest on July 22, 2025 and shall vest in equal installments on each quarterly anniversary thereafter, subject to the Reporting Person's continued service through each such vesting date. 8,928 of these stock options are fully vested and exercisable stock options and 26,786 of these stock options are unvested stock options and will be fully vested on July 22, 2029.

3. Includes 22,402 unvested stock options exercisable into 22,402 shares of the Issuer's common stock. The stock options (which represent a portion of an original grant of 35,842 stock options exercisable into approximately 35,842 shares of the Issuer's common stock (the "Original Grant")) began to vest on March 3, 2025, subject to a one-year cliff, and shall vest in equal installments on each monthly anniversary thereafter, subject to the Reporting Person's continued service through each such vesting date. The Reporting Person previously exercised 13,440 of the stock options from the Original Grant.

4. Includes 6,068 unvested stock options exercisable into 6,068 shares of the Issuer's common stock. The stock options (which represent a portion of an original grant of 11,649 stock options exercisable into approximately 11,649 shares of the Issuer's common stock (the "Original Grant")) began to vest on September 30, 2024, subject to a one-year cliff, and shall vest in equal installments on each monthly anniversary thereafter, subject to the Reporting Person's continued service through each such vesting date. The Reporting Person previously exercised 5,581 of these stock options from the Original Grant.

	/s/ Leonard Greenstein, as attorney-in-fact for Jeffrey Bertolini	09/10/2026
	** 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).
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 3: SEC 1473 (03-26)