COLUMN GROUP III GP, LP - 15 Jan 2026 Form 4 Insider Report for Surrozen, Inc./DE (SRZN)

Reporting relationship: 10%+ Owner
Issuer ticker: SRZN
Reported as of: 15 Jan 2026
Net transaction value: +$641,597
SEC form: 4
Accepted by SEC: 20 Jan 2026, 19:35:33 UTC
Prior SEC filing: 15 Jan 2026
Next SEC filing: 12 Feb 2026
Source filing: View source filing
Reporting owner signature: /s/ The Column Group III GP, LP /s/ James Evangelista, Attorney-in-Fact

Key filing fact

COLUMN GROUP III GP, LP filed Form 4 for Surrozen, Inc./DE (SRZN) on 20 Jan 2026.

Key facts

This page summarizes COLUMN GROUP III GP, LP's Form 4 filing for Surrozen, Inc./DE (SRZN).
6 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 20 Jan 2026, 19:35.

Change

Previous filing in this sequence was filed on 15 Jan 2026.
Current net transaction value: +$641,597.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (7)

CIK 0001790965 Primary reporting owner

COLUMN GROUP III GP, LP

Relationship: 10%+ Owner
Address: 1 LETTERMAN DR., BLDG D, SUITE DM-900, SAN FRANCISCO
Signature: /s/ The Column Group III GP, LP /s/ James Evangelista, Attorney-in-Fact
Signature date: 20 Jan 2026

CIK 0001668085

COLUMN GROUP III-A, LP

Relationship: 10%+ Owner
Address: 1 LETTERMAN DR., BLDG D, SUITE DM-900, SAN FRANCISCO
Signature: /s/ The Column Group III-A, LP. by The Column Group III GP, LP, its general partner /s/ James Evangelista, Attorney-in-Fact
Signature date: 20 Jan 2026

CIK 0001668159

COLUMN GROUP III, LP

Relationship: 10%+ Owner
Address: 1 LETTERMAN DR., BLDG D, SUITE DM-900, SAN FRANCISCO
Signature: /s/ The Column Group III, LP by The Column Group III GP, LP, its general partner /s/ James Evangelista, Attorney-in-Fact
Signature date: 20 Jan 2026

CIK 0001931825

Column Group Opportunity III, LP

Relationship: 10%+ Owner
Address: 1 LETTERMAN DR., BLDG D, SUITE DM-900, SAN FRANCISCO
Signature: /s/ The Column Group Opportunity III, LP /s/ James Evangelista, Attorney-in-Fact
Signature date: 20 Jan 2026

CIK 0001932874

Column Group Opportunity III GP, LP

Relationship: 10%+ Owner
Address: 1 LETTERMAN DR., BLDG D, SUITE DM-900, SAN FRANCISCO
Signature: /s/ The Column Group Opportunity III GP, LP. by /s/ James Evangelista, Attorney-in-Fact
Signature date: 20 Jan 2026

CIK 0001932445

TCG Opportunity III GP, LLC

Relationship: 10%+ Owner
Address: 1 LETTERMAN DR., BLDG D, SUITE DM-900, SAN FRANCISCO
Signature: /s/ TCG Opportunity III GP, LLC by /s/ James Evangelista, Attorney-in-Fact
Signature date: 20 Jan 2026

CIK 0001606074

Svennilson Peter

Relationship: 10%+ Owner
Address: 1 LETTERMAN DR., BLDG D, SUITE DM-900, SAN FRANCISCO
Signature: /s/James Evangelista, as attorney-in-fact for Peter Svennilson
Signature date: 20 Jan 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

SRZN transaction

Common Stock

Purchase

Transaction value: $111,180
Shares: +5,590
Change %: +0.63%
Price: $19.89
Shares after: 890,604
Date: 15 Jan 2026
Ownership: By The Column Group III, LP
Footnotes: F1

SRZN transaction

Common Stock

Purchase

Transaction value: $125,360
Shares: +6,303
Change %: +0.63%
Price: $19.89
Shares after: 1,005,732
Date: 15 Jan 2026
Ownership: By The Column Group III-A, LP
Footnotes: F2

SRZN transaction

Common Stock

Purchase

Transaction value: $24,080
Shares: +1,204
Change %: +0.14%
Price: $20.00
Shares after: 891,808
Date: 16 Jan 2026
Ownership: By The Column Group III, LP
Footnotes: F1

SRZN transaction

Common Stock

Purchase

Transaction value: $27,160
Shares: +1,358
Change %: +0.14%
Price: $20.00
Shares after: 1,007,090
Date: 16 Jan 2026
Ownership: By The Column Group III-A, LP
Footnotes: F2

SRZN transaction

Common Stock

Purchase

Transaction value: $166,286
Shares: +8,484
Change %: +0.95%
Price: $19.60
Shares after: 900,292
Date: 20 Jan 2026
Ownership: By The Column Group III, LP
Footnotes: F1

SRZN transaction

Common Stock

Purchase

Transaction value: $187,532
Shares: +9,568
Change %: +0.95%
Price: $19.60
Shares after: 1,016,658
Date: 20 Jan 2026
Ownership: By The Column Group III-A, LP
Footnotes: F2

SRZN holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 344,827
Date: 15 Jan 2026
Ownership: By The Column Group Opportunity III, LP
Footnotes: F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

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.

Footnote F2

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.

Footnote F3

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.