# EDGAR Filing Document

**Accession Number:** 0001225480
**File Stem:** 0000950170-25-098529
**Filing Date:** 2025-7
**Character Count:** 10129
**Document Hash:** afb7f6b5e3c3d474a7283c18f95bdeb7
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000950170-25-098529.hdr.sgml**: 20250724

**ACCESSION NUMBER**: 0000950170-25-098529

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20250722

**FILED AS OF DATE**: 20250724

**DATE AS OF CHANGE**: 20250724

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** ROOT JONATHAN D
- **CENTRAL INDEX KEY:** 0001225480

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-42756
- **FILM NUMBER:** 251148245

**MAIL ADDRESS:**
- **STREET 1:** 1460 EL CAMINO REAL STE 100
- **CITY:** MENLO PARK
- **STATE:** CA
- **ZIP:** 94025
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** CARLSMED, INC.
- **CENTRAL INDEX KEY:** 0001794546
- **STANDARD INDUSTRIAL CLASSIFICATION:** SURGICAL & MEDICAL INSTRUMENTS & APPARATUS [3841]
- **ORGANIZATION NAME:** 08 Industrial Applications and Services
- **EIN:** 831081863
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 1800 ASTON AVENUE
- **STREET 2:** SUITE 100
- **CITY:** CARLSBAD
- **STATE:** CA
- **ZIP:** 92008
- **BUSINESS PHONE:** 858-295-9290

**MAIL ADDRESS:**
- **STREET 1:** 1800 ASTON AVENUE
- **STREET 2:** SUITE 100
- **CITY:** CARLSBAD
- **STATE:** CA
- **ZIP:** 92008

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[ ] 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**<sup>*</sup><br>ROOT JONATHAN D<br><sub>(Last) (First) (Middle)</sub><br>C/O CARLSMED, INC.<br>1800 ASTON AVE., SUITE 100<br><sub>(Street)</sub><br>CARLSBAD, CA 92008<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2025-07-22 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[X] Director [ ] 10% Owner<br>[ ] Officer (give title below) [ ] Other (specify below)<br>_ _ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>CARLSMED, INC. [ CARL ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Common Stock | 2025-07-22 |  | A |  | 17333<sup>(1)(2)</sup> | A | $0 | 17333<sup>(1)(2)</sup> | D |  |
| Common Stock | 2025-07-24 |  | C |  | 2948794 | A | <sup>(7)</sup> | 2948794 | I | See footnotes<sup>(3)(6)</sup> |
| Common Stock | 2025-07-24 |  | C |  | 825135 | A | <sup>(7)</sup> | 3773929 | I | See footnotes<sup>(3)(6)</sup> |
| Common Stock | 2025-07-24 |  | C |  | 531877 | A | <sup>(7)</sup> | 4305806 | I | See footnotes<sup>(3)(6)</sup> |
| Common Stock | 2025-07-24 |  | C |  | 149655 | A | <sup>(7)</sup> | 149655 | I | See footnotes<sup>(4)(6)</sup> |
| Common Stock | 2025-07-24 |  | C |  | 41876 | A | <sup>(7)</sup> | 191531 | I | See footnotes<sup>(4)(6)</sup> |
| Common Stock | 2025-07-24 |  | C |  | 26993 | A | <sup>(7)</sup> | 218524 | I | See footnotes<sup>(4)(6)</sup> |
| Common Stock | 2025-07-24 |  | C |  | 1117743 | A | <sup>(7)</sup> | 1117743 | I | See footnotes<sup>(5)(6)</sup> |
| Common Stock | 2025-07-24 |  | P |  | 466666<sup>(8)</sup> | A | $15 | 483999<sup>(9)</sup> | D |  |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| Series A Preferred Stock | <sup>(7)</sup> | 2025-07-24 |  | C |  |  | 2948794 | <sup>(7)</sup> | <sup>(7)</sup> | Common Stock | 2948794 | <sup>(7)</sup> | 0 | I | See footnotes<sup>(3)(6)</sup> |
| Series B Preferred Stock | <sup>(7)</sup> | 2025-07-24 |  | C |  |  | 825135 | <sup>(7)</sup> | <sup>(7)</sup> | Common Stock | 825135 | <sup>(7)</sup> | 0 | I | See footnotes<sup>(3)(6)</sup> |
| Series C Preferred Stock | <sup>(7)</sup> | 2025-07-24 |  | C |  |  | 531877 | <sup>(7)</sup> | <sup>(7)</sup> | Common Stock | 531877 | <sup>(7)</sup> | 0 | I | See footnotes<sup>(3)(6)</sup> |
| Series A Preferred Stock | <sup>(7)</sup> | 2025-07-24 |  | C |  |  | 149655 | <sup>(7)</sup> | <sup>(7)</sup> | Common Stock | 149655 | <sup>(7)</sup> | 0 | I | See footnotes<sup>(4)(6)</sup> |
| Series B Preferred Stock | <sup>(7)</sup> | 2025-07-24 |  | C |  |  | 41876 | <sup>(7)</sup> | <sup>(7)</sup> | Common Stock | 41876 | <sup>(7)</sup> | 0 | I | See footnotes<sup>(4)(6)</sup> |
| Series C Preferred Stock | <sup>(7)</sup> | 2025-07-24 |  | C |  |  | 26993 | <sup>(7)</sup> | <sup>(7)</sup> | Common Stock | 26993 | <sup>(7)</sup> | 0 | I | See footnotes<sup>(4)(6)</sup> |
| Series C Preferred Stock | <sup>(7)</sup> | 2025-07-24 |  | C |  |  | 1117743 | <sup>(7)</sup> | <sup>(7)</sup> | Common Stock | 1117743 | <sup>(7)</sup> | 0 | I | See footnotes<sup>(5)(6)</sup> |

---

### Footnotes:

(1) Constitute an award of restricted stock units ("RSUs") for which the Reporting Person is entitled to receive one (1) share of Common Stock for each RSU upon vesting. The RSUs will vest in equal annual installments over three years.

(2) Includes 17,333 unvested restricted stock units convertible into approximately 17,333 shares of the Issuer's common stock.

(3) Stock held by U.S. Venture Partners XII, L.P. ("USVP XII").

(4) Stock held by U.S. Venture Partners XII-A, L.P. ("USVP XII-A").

(5) Stock held by U.S. Venture Partners Select Fund I, L.P., ("USVP SFI") on its own behalf and as nominee for U.S. Venture Partners Select Fund I-A, L.P. ("USVP SFI-A").

(6) Presidio Management Group XII, L.L.C ("PMG XII") is the general partner of USVP XII and USVP XII-A. Presidio Management Group Select Fund I, L.L.C ("PMG SFI," and, together with USVP XII, USVP XII-A, USVP SFI, USVP SFI-A, and PMG XII, "USVP") is the general partner of USVP SFI and USVP SFI-A. The Reporting Person is a managing member of PMG XII and PMG SFI and may be deemed to share voting and dispositive power over the stock held by USVP. The Reporting Person disclaims beneficial ownership of such stock, except to the extent of any pecuniary interest therein.

(7) These securities were previously reported on a Form 3 filed by the Reporting Person as preferred stock of the Issuer. Each share of preferred stock of the Issuer converted into one share of the Issuer's common stock immediately prior to the closing of the Issuer's initial public offering on a 1-to-1 basis without payment of additional consideration. The preferred stock has no expiration date.

(8) Includes 466,666 shares of the Issuer's common stock purchased by the Reporting Person in the Issuer's initial public offering at the public offering price of $15.00 per share. The purchase was made directly from the underwriters in connection with the offering.

(9) Includes (i) 466,666 shares of the Issuer's common stock purchased by the reporting person in the Issuer's initial public offering at the public offering price of $15.00 per share, and (ii) 17,333 unvested RSUs convertible into approximately 17,333 shares of the Issuer's common stock. The RSUs will vest in equal annual installments over three years.

**Signature:** /s/ Leonard Greenstein, as attorney-in-fact for Jonathan Root  
**Date:** 2025-07-24

### Remarks:

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.**