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  4. [Form 4] Surrozen, Inc./DE Insider Trading Activity

Surrozen (SRZN) insider funds report common stock purchases in Form 4

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

Rhea-AI Filing Summary

Surrozen, Inc. (SRZN) reported insider fund purchases of its common stock. Investment partnerships affiliated with The Column Group bought additional shares on January 13 and 14, 2026, in open-market transactions. The Column Group III, LP acquired 5,861 shares at $19.8041 and 2,596 shares at $19.9883, bringing its indirectly held position to 885,014 shares. The Column Group III-A, LP acquired 6,609 shares at $19.8041 and 2,927 shares at $19.9883, increasing its indirectly held position to 999,429 shares. A related fund, The Column Group Opportunity III, LP, is reported as indirectly holding 344,827 shares. The general partners and managing partners are listed as 10% owners and disclaim beneficial ownership beyond their pecuniary interests.

Positive

  • None.

Negative

  • None.
Insider COLUMN GROUP III GP, LP, COLUMN GROUP III-A, LP, COLUMN GROUP III, LP, Column Group Opportunity III, LP, Column Group Opportunity III GP, LP, TCG Opportunity III GP, LLC, Svennilson Peter
Role 10% Owner | 10% Owner | 10% Owner | 10% Owner | 10% Owner | 10% Owner | 10% Owner
Bought 17,993 shs ($357K)
Type Security Shares Price Value
Purchase Common Stock 2,596 $19.9883 $52K
Purchase Common Stock 2,927 $19.9883 $59K
Purchase Common Stock 5,861 $19.8041 $116K
Purchase Common Stock 6,609 $19.8041 $131K
holding Common Stock -- -- --
Holdings After Transaction: Common Stock — 885,014 shares (Indirect, By The Column Group III, LP)
Footnotes (1)
  1. The securities are directly held by The Column Group III, LP ("TCG III LP"). The Column Group III GP, LP ("TCG III GP") is the general partner of TCG III LP and may be deemed to have voting, investment and dispositive power with respect to these securities. The managing partners of TCG III GP are Peter Svennilson and Tim Kutzkey, a member of the Issuer's board of directors (collectively, the "Managing Partners"). The Managing Partners may be deemed to share voting and investment power with respect to such securities. TCG III GP and each of the Managing Partners disclaim beneficial ownership of these securities, except to the extent of their respective pecuniary interest in such securities. The securities are directly held by The Column Group III-A, LP ("TCG III-A LP"). TCG III GP is the general partner of TCG III-A LP and may be deemed to have voting, investment and dispositive power with respect to these securities. The managing partners of TCG III GP are the Managing Partners. The Managing Partners may be deemed to share voting and investment power with respect to such securities. TCG III GP and each of the Managing Partners disclaim beneficial ownership of these securities, except to the extent of their respective pecuniary interest in such securities. The securities are directly held by The Column Group Opportunity III, LP ("TCG Opportunity III LP"). The Column Group Opportunity III GP, LP ("TCG Opportunity III GP LP") is the general partner of TCG Opportunity III LP and may be deemed to have voting, investment and dispositive power with respect to these securities. TCG Opportunity III GP, LLC ("TCG Opportunity III GP LLC") is the general partner of TCG Opportunity III GP LP and the ultimate general partner of TCG Opportunity III LP and may be deemed to have voting, investment and dispositive power with respect to these securities. The managing members of TCG Opportunity III GP LLC are the Managing Partners. TCG Opportunity III GP LP, TCG Opportunity III GP LLC and each of the Managing Partners disclaim beneficial ownership of these securities, except to the extent of their respective pecuniary interest in such securities.
Form 4 Insider Transactions: What Each Field Means →
SEC Form 4
FORM 4 UNITED 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*
COLUMN GROUP III GP, LP
(Last) (First) (Middle)
1 LETTERMAN DR., BLDG D, SUITE DM-900
(Street)
SAN FRANCISCO CA 94129
(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
Surrozen, Inc./DE [ SRZN ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director X 10% Owner
Officer (give title below) Other (specify below)
3. Date of Earliest Transaction (Month/Day/Year)
01/13/2026
4. If Amendment, Date of Original Filed (Month/Day/Year)
 6. Individual or Joint/Group Filing (Check Applicable Line)
Form filed by One Reporting Person
X Form filed by More than One Reporting Person
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)
Code V Amount (A) or (D) Price
Common Stock 01/13/2026 P 5,861 A $19.8041 882,418 I By The Column Group III, LP(1)
Common Stock 01/13/2026 P 6,609 A $19.8041 996,502 I By The Column Group III-A, LP(2)
Common Stock 01/14/2026 P 2,596 A $19.9883 885,014 I By The Column Group III, LP(1)
Common Stock 01/14/2026 P 2,927 A $19.9883 999,429 I By The Column Group III-A, LP(2)
Common Stock 344,827 I By The Column Group Opportunity III, LP(3)
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)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
1. Name and Address of Reporting Person*
COLUMN GROUP III GP, LP
(Last) (First) (Middle)
1 LETTERMAN DR., BLDG D, SUITE DM-900
(Street)
SAN FRANCISCO CA 94129
(City) (State) (Zip)
Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
1. Name and Address of Reporting Person*
COLUMN GROUP III-A, LP
(Last) (First) (Middle)
1 LETTERMAN DR., BLDG D, SUITE DM-900
(Street)
SAN FRANCISCO CA 94129
(City) (State) (Zip)
Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
1. Name and Address of Reporting Person*
COLUMN GROUP III, LP
(Last) (First) (Middle)
1 LETTERMAN DR., BLDG D, SUITE DM-900
(Street)
SAN FRANCISCO CA 94129
(City) (State) (Zip)
Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
1. Name and Address of Reporting Person*
Column Group Opportunity III, LP
(Last) (First) (Middle)
1 LETTERMAN DR., BLDG D, SUITE DM-900
(Street)
SAN FRANCISCO CA 94129
(City) (State) (Zip)
Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
1. Name and Address of Reporting Person*
Column Group Opportunity III GP, LP
(Last) (First) (Middle)
1 LETTERMAN DR., BLDG D, SUITE DM-900
(Street)
SAN FRANCISCO CA 94129
(City) (State) (Zip)
Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
1. Name and Address of Reporting Person*
TCG Opportunity III GP, LLC
(Last) (First) (Middle)
1 LETTERMAN DR., BLDG D, SUITE DM-900
(Street)
SAN FRANCISCO CA 94129
(City) (State) (Zip)
Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
1. Name and Address of Reporting Person*
Svennilson Peter
(Last) (First) (Middle)
1 LETTERMAN DR., BLDG D, SUITE DM-900
(Street)
SAN FRANCISCO CA 94129
(City) (State) (Zip)
Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
Explanation of Responses:
1. The securities are directly held by The Column Group III, LP ("TCG III LP"). The Column Group III GP, LP ("TCG III GP") is the general partner of TCG III LP and may be deemed to have voting, investment and dispositive power with respect to these securities. The managing partners of TCG III GP are Peter Svennilson and Tim Kutzkey, a member of the Issuer's board of directors (collectively, the "Managing Partners"). The Managing Partners may be deemed to share voting and investment power with respect to such securities. TCG III GP and each of the Managing Partners disclaim beneficial ownership of these securities, except to the extent of their respective pecuniary interest in such securities.
2. The securities are directly held by The Column Group III-A, LP ("TCG III-A LP"). TCG III GP is the general partner of TCG III-A LP and may be deemed to have voting, investment and dispositive power with respect to these securities. The managing partners of TCG III GP are the Managing Partners. The Managing Partners may be deemed to share voting and investment power with respect to such securities. TCG III GP and each of the Managing Partners disclaim beneficial ownership of these securities, except to the extent of their respective pecuniary interest in such securities.
3. The securities are directly held by The Column Group Opportunity III, LP ("TCG Opportunity III LP"). The Column Group Opportunity III GP, LP ("TCG Opportunity III GP LP") is the general partner of TCG Opportunity III LP and may be deemed to have voting, investment and dispositive power with respect to these securities. TCG Opportunity III GP, LLC ("TCG Opportunity III GP LLC") is the general partner of TCG Opportunity III GP LP and the ultimate general partner of TCG Opportunity III LP and may be deemed to have voting, investment and dispositive power with respect to these securities. The managing members of TCG Opportunity III GP LLC are the Managing Partners. TCG Opportunity III GP LP, TCG Opportunity III GP LLC and each of the Managing Partners disclaim beneficial ownership of these securities, except to the extent of their respective pecuniary interest in such securities.
/s/ The Column Group III GP, LP /s/ James Evangelista, Attorney-in-Fact 01/15/2026
/s/ The Column Group III-A, LP. by The Column Group III GP, LP, its general partner /s/ James Evangelista, Attorney-in-Fact 01/15/2026
/s/ The Column Group III, LP by The Column Group III GP, LP, its general partner /s/ James Evangelista, Attorney-in-Fact 01/15/2026
/s/ The Column Group Opportunity III, LP /s/ James Evangelista, Attorney-in-Fact 01/15/2026
/s/ The Column Group Opportunity III GP, LP. by /s/ James Evangelista, Attorney-in-Fact 01/15/2026
/s/ TCG Opportunity III GP, LLC by /s/ James Evangelista, Attorney-in-Fact 01/15/2026
/s/James Evangelista, as attorney-in-fact for Peter Svennilson 01/15/2026
** 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 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.

Source: View Original Filing on SEC EDGAR

FAQ

What does Surrozen (SRZN) disclose in this Form 4 filing?

The filing reports that investment partnerships affiliated with The Column Group, identified as 10% owners of Surrozen (SRZN), purchased additional shares of the company’s common stock in the open market and updated their indirect ownership positions.

How many Surrozen shares did The Column Group III, LP buy and at what prices?

The Column Group III, LP bought 5,861 shares at $19.8041 per share on January 13, 2026 and 2,596 shares at $19.9883 per share on January 14, 2026, and is shown as indirectly holding 885,014 shares afterward.

What purchases did The Column Group III-A, LP report in Surrozen (SRZN) stock?

The Column Group III-A, LP bought 6,609 shares at $19.8041 per share on January 13, 2026 and 2,927 shares at $19.9883 per share on January 14, 2026, and is reported as indirectly holding 999,429 shares afterward.

Do the managing partners personally own all the Surrozen shares reported here?

No. The footnotes state that the securities are directly held by the Column Group limited partnerships and that the general partners and managing partners disclaim beneficial ownership except to the extent of their respective pecuniary interests.

Are these Surrozen (SRZN) transactions purchases or sales?

All reported transactions in this filing are coded as “P”, indicating open-market or private purchases of Surrozen common stock by the Column Group investment partnerships.