Beneficial Ownership Report · SCHEDULE 13G
Surrozen, Inc.
SRZNNASDAQEQUITYCurrent
Beneficial Ownership Report
Structured filing — SCHEDULE 13G
primary_doc.xml
Subject company
- Company
- Surrozen, Inc./DE
- Company CIK
- 0001824893
- Street
- 171 Oyster Point Blvd
- Street (continued)
- Suite 400
- City
- South San Francisco
- State / country code
- CA
- Postal code
- 94080
Statement details
- Security class
- Common Stock, $0.0001 par value per share
- Event date
- 09/24/2026
- Rule designation
- Rule 13d-1(c)
Reporting person 1
- Name
- Commodore Capital LP
- Citizenship / organization
- DE
- Reporting person type
- IA · PN
- Aggregate amount owned
- 885,000.00
- Percent of class
- 7.5
- Sole voting power
- 0.00
- Shared voting power
- 885,000.00
- Sole dispositive power
- 0.00
- Shared dispositive power
- 885,000.00
Reporting person 2
- Name
- Commodore Capital Master LP
- Citizenship / organization
- E9
- Reporting person type
- PN
- Aggregate amount owned
- 885,000.00
- Percent of class
- 7.5
- Sole voting power
- 0.00
- Shared voting power
- 885,000.00
- Sole dispositive power
- 0.00
- Shared dispositive power
- 885,000.00
Reporting person 3
- Name
- Robert Egen Atkinson
- Citizenship / organization
- X1
- Reporting person type
- HC · IN
- Aggregate amount owned
- 885,000.00
- Percent of class
- 7.5
- Sole voting power
- 0.00
- Shared voting power
- 885,000.00
- Sole dispositive power
- 0.00
- Shared dispositive power
- 885,000.00
Reporting person 4
- Name
- Michael Kramarz
- Citizenship / organization
- X1
- Reporting person type
- HC · IN
- Aggregate amount owned
- 885,000.00
- Percent of class
- 7.5
- Sole voting power
- 0.00
- Shared voting power
- 885,000.00
- Sole dispositive power
- 0.00
- Shared dispositive power
- 885,000.00
Item 1
Issuer
Surrozen, Inc./DE
Principal executive office address
171 Oyster Point Blvd, Suite 400, South San Francisco, CALIFORNIA, 94080.
Item 2
Citizenship
See Item 4 of the cover page for each Filer.
Filing person
Commodore Capital LP Commodore Capital Master LP Robert Egen Atkinson Michael Kramarz Each a "Filer."
Principal business or residence address
The address for Commodore Capital LP, Robert Egen Atkinson, and Michael Kramarz is 444 Madison Avenue, Floor 35, New York, NY 10022. The address for Commodore Capital Master LP is c/o Maples Corporate Services Limited, Ugland House, South Church Street, PO Box 309, Grand Cayman KY1-1104, Cayman Islands.
Item 3
Not applicable indication
Y
Item 4
Percent of class
See item 11 of the cover page for each Filer.
Amount beneficially owned
See Item 9 of the cover page for each Filer. This report on Schedule 13G is being filed by Commodore Capital LP (the "Firm"), Commodore Capital Master LP ("Commodore Master"), Michael Kramarz, and Robert Egen Atkinson. The Firm is the investment manager to Commodore Master. As of September 24, 2026, the Firm may be deemed to beneficially own an aggregate of 885,000 shares of Common Stock, $0.0001 par value per share (the "Common Stock") of Surrozen, Inc. (the "Issuer"). The Firm, as the investment manager to Commodore Master, may be deemed to beneficially own these securities. Michael Kramarz and Robert Egen Atkinson are the managing partners of the Firm and exercise investment discretion with respect to these securities. Ownership percentages are based on 11,753,558 shares of Common Stock reported as issued and outstanding as of August 4, 2026 in the Issuer's Quarterly Form 10-Q filed with the Securities and Exchange Commission on June 30, 2026.
Sole voting power
See Item 5 of the cover page for each Filer.
Shared voting power
See Item 6 of the cover page for each Filer.
Sole dispositive power
See Item 7 of the cover page for each Filer.
Shared dispositive power
See Item 8 of the cover page for each Filer.
Item 5
Not applicable indication
Y
Ownership of 5% or less
N
Item 6
Not applicable indication
Y
Item 7
Not applicable indication
Y
Item 8
Not applicable indication
Y
Item 9
Not applicable indication
Y
Item 10
Not applicable indication
N
Certifications
By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.
Exhibits
Exhibit 1: Joint Filing Agreement
Signature 1
- Reporting person
- Commodore Capital LP
- Signed
- Michael Kramarz
- Title
- Managing Partner
- Date
- 10/01/2026
Signature 2
- Reporting person
- Commodore Capital Master LP
- Signed
- Michael Kramarz
- Title
- Authorized Signatory
- Date
- 10/01/2026
Signature 3
- Reporting person
- Robert Egen Atkinson
- Signed
- Robert Egen Atkinson
- Title
- Authorized Signatory
- Date
- 10/01/2026
Signature 4
- Reporting person
- Michael Kramarz
- Signed
- Michael Kramarz
- Title
- Authorized Signatory
- Date
- 10/01/2026
Filed exhibits
- EX-1 ↗exhibit1jointfilingagreement.htm
Company context
Surrozen is a biotechnology company, pioneering a new class of Wnt-based therapeutics designed to harness the power of Wnt signaling to treat sight-threatening ophthalmic conditions. Built on deep scientific expertise and a proprietary antibody-engineering platform, Surrozen develops multifunctional biologics that selectively activate Wnt signaling in combination with other key disease pathways. Our approach aims to deliver best-in-class, durable therapies that have the potential to transform patient outcomes in some of the most pressing unmet medical needs in ocular diseases. For more information, visit www.surrozen.com.