Surrozen (SRZN) Column Group funds report common stock buys in January

Rhea-AI Filing Summary

Surrozen, Inc. (SRZN) received insider buying disclosures from investment funds affiliated with The Column Group. On 01/06/2026, The Column Group III, LP indirectly acquired 7,097 shares of Surrozen common stock at $19.8872 per share, bringing its indirectly held position to 876,557 shares. On the same date, The Column Group III-A, LP indirectly acquired 8,003 shares at $19.8872 per share, increasing its indirect holdings to 989,893 shares. The filing also reports an existing indirect holding of 344,827 shares by The Column Group Opportunity III, LP with no new transaction on that line.

The interests are reported as indirect, through various Column Group partnership and general-partner entities. The general-partner entities and managing partners, including board member Tim Kutzkey and managing partner Peter Svennilson, disclaim beneficial ownership of these securities except to the extent of their pecuniary interest.

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
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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)
01/06/2026

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	01/06/2026		P		7,097	A	$19.8872	876,557	I	By The Column Group III, LP(1)
Common Stock	01/06/2026		P		8,003	A	$19.8872	989,893	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	01/08/2026
	/s/ The Column Group III-A, LP. by The Column Group III GP, LP, its general partner /s/ James Evangelista, Attorney-in-Fact	01/08/2026
	/s/ The Column Group III, LP by The Column Group III GP, LP, its general partner /s/ James Evangelista, Attorney-in-Fact	01/08/2026
	/s/ The Column Group Opportunity III, LP /s/ James Evangelista, Attorney-in-Fact	01/08/2026
	/s/ The Column Group Opportunity III GP, LP. by /s/ James Evangelista, Attorney-in-Fact	01/08/2026
	/s/ TCG Opportunity III GP, LLC by /s/ James Evangelista, Attorney-in-Fact	01/08/2026
	/s/James Evangelista, as attorney-in-fact for Peter Svennilson	01/08/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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FAQ

What insider transactions did Surrozen (SRZN) report in this Form 4?

The filing reports that The Column Group III, LP indirectly bought 7,097 Surrozen common shares and The Column Group III-A, LP indirectly bought 8,003 shares, both on 01/06/2026 at $19.8872 per share.

Who actually holds the Surrozen (SRZN) shares reported in this Form 4?

The shares are directly held by The Column Group III, LP, The Column Group III-A, LP, and The Column Group Opportunity III, LP. Various Column Group general-partner entities and managing partners are listed due to their roles in those funds.

How many Surrozen (SRZN) shares do the Column Group funds hold after these transactions?

After the reported trades, The Column Group III, LP indirectly holds 876,557 Surrozen shares, The Column Group III-A, LP indirectly holds 989,893 shares, and The Column Group Opportunity III, LP is shown with 344,827 indirectly held shares.

What price did the Column Group funds pay for Surrozen (SRZN) shares?

Both reported purchases on 01/06/2026 were made at a price of $19.8872 per share for Surrozen common stock.

Do the managing partners claim full beneficial ownership of these Surrozen (SRZN) shares?

No. The footnotes state that the general-partner entities and managing partners, including Peter Svennilson and Tim Kutzkey, disclaim beneficial ownership of the reported shares except to the extent of their respective pecuniary interests.

Is there any derivative security activity reported for Surrozen (SRZN) in this Form 4?

No derivative securities transactions are listed. The table for derivative securities is present but shows no specific instruments or trades.