Surrozen: Kutzkey reports 21.5% beneficial stake

Each partnership's units paired common shares with Series E Common Warrants at a stated price of $11.60 per unit.

Rhea-AI Filing Summary

Surrozen, Inc. (SRZN)'s October 20, 2026 private placement included unit purchases by three venture-capital partnerships. The Column Group III, LP purchased 485,830 common shares and 242,915 Series E Common Warrants for $11.60 per unit, or $5,635,628.00 in aggregate. The Column Group III-A, LP purchased 548,653 shares and 274,327 warrants for $11.60 per unit, or $6,364,374.80 in aggregate. The Column Group Opportunity III, LP purchased 517,241 shares and 258,620 warrants for $11.60 per unit, or $5,999,995.60 in aggregate.

Tim Kutzkey, a member of Surrozen's board of directors, and Peter Svennilson, a managing partner of The Column Group III GP, LP and managing member of TCG Opportunity III GP, LLC, are each listed as beneficially owning 3,824,612 shares, or 21.5%, with shared voting and dispositive power through affiliated entities. The statement says they may be deemed to share that power and disclaim beneficial ownership except to the extent of their pecuniary interests.

Filing Explained

The amendment’s beneficial-ownership calculation includes warrants exercisable within 60 days but excludes the funds’ warrants that cannot be exercised because of beneficial-ownership limits; those excluded warrants are not counted in the reported stake.

Key Figures

The Column Group III, LP purchase: $5,635,628.00; 485,830 common shares and 242,915 Series E Common Warrants The Column Group III-A, LP purchase: $6,364,374.80; 548,653 common shares and 274,327 Series E Common Warrants The Column Group Opportunity III, LP purchase: $5,999,995.60; 517,241 common shares and 258,620 Series E Common Warrants +2 more

5 metrics

The Column Group III, LP purchase $5,635,628.00; 485,830 common shares and 242,915 Series E Common Warrants Private placement purchase on October 20, 2026

The Column Group III-A, LP purchase $6,364,374.80; 548,653 common shares and 274,327 Series E Common Warrants Private placement purchase on October 20, 2026

The Column Group Opportunity III, LP purchase $5,999,995.60; 517,241 common shares and 258,620 Series E Common Warrants Private placement purchase on October 20, 2026

Purchase price $11.60 per unit Private placement purchases on October 20, 2026

Shares issued in second tranche 6,043,321 shares Private placement second tranche, October 20, 2026

Key Terms

Series E Common Warrants, beneficial ownership limitations, dispositive power, pecuniary interest

4 terms

Series E Common Warrants financial

"units comprised of shares of Common Stock and Series E Common Warrants"

beneficial ownership limitations regulatory

"not exercisable within 60 days ... due to beneficial ownership limitations"

Beneficial ownership limitations are rules or contractual caps that restrict how much of a company’s stock an individual or entity can be treated as owning or controlling for legal, regulatory or corporate-governance purposes. They matter to investors because such limits affect voting power, reporting obligations, takeover risk and the ability to increase a stake — like an elevator weight limit or a lane divider that prevents any one car from taking over the whole road.

dispositive power regulatory

"may be deemed to have voting, investment and dispositive power"

Dispositive power is the authority to decide the final outcome of an asset, legal claim, contract, or corporate action — in effect the power to dispose of or resolve something. For investors it matters because whoever holds that authority can determine who gets paid, who controls an asset or vote, and how risks and returns are allocated; think of it like holding the key that lets you lock in the winner or loser in a deal.

pecuniary interest financial

"except to the extent of such Reporting Person's pecuniary interest therein"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did the Column Group funds buy in SRZN's October 20 private placement?

On October 20, 2026, The Column Group III, LP purchased 485,830 common shares and 242,915 Series E Common Warrants for $5,635,628.00; The Column Group III-A, LP purchased 548,653 shares and 274,327 warrants for $6,364,374.80; and The Column Group Opportunity III, LP purchased 517,241 shares and 258,620 warrants for $5,999,995.60. Each purchase was priced at $11.60 per unit.

How many SRZN shares are Tim Kutzkey and Peter Svennilson listed as beneficially owning?

Tim Kutzkey, a member of Surrozen's board of directors, and Peter Svennilson, a managing partner of The Column Group III GP, LP and managing member of TCG Opportunity III GP, LLC, are each listed with 3,824,612 beneficially owned shares, or 21.5%. They may be deemed to share voting and dispositive power through affiliated entities and disclaim beneficial ownership except to the extent of their pecuniary interests.

Why were some warrants excluded from SRZN beneficial ownership calculations?

The statement excludes warrants to purchase 594,625 shares held by The Column Group III, LP, 671,518 shares held by The Column Group III-A, LP, and 431,034 shares held by The Column Group Opportunity III, LP because they are not exercisable within 60 days due to beneficial ownership limitations.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 10/22/2026 - 04:46 PM EDT Accepted by SEC EDGAR 10/22/2026 - 04:45 PM EDT Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934

(Amendment No. 7)

Surrozen, Inc.

(Name of Issuer)

Common Stock, $0.0001 par value per share

(Title of Class of Securities)

86889P208

(CUSIP Number)

James Evangelista, CFO
The Column Group III, LP, 1 Letterman Drive, Building D, Suite M-9
San Francisco, CA, 94129
(415) 865-2050

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

10/20/2026

(Date of Event Which Requires Filing of This Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box.

The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

schemaVersion:

SCHEDULE 13D

CUSIP Number(s): 86889P208

1

Name of reporting person

The Column Group III GP, LP

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

AF

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 2,962,544.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 2,962,544.00

11

Aggregate amount beneficially owned by each reporting person

2,962,544.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

16.6 %

14

Type of Reporting Person (See Instructions)

PN

Comment for Type of Reporting Person:

Consists of (i) 1,386,122 shares of Common Stock held of record by TCG III LP (as defined in Item 2(a) below), (ii) warrants to purchase 5,218 shares of Common Stock held by TCG III LP which are exercisable within 60 days of this Statement, (iii) 1,565,311 shares of Common Stock held of record by TCG III-A LP (as defined in Item 2(a) below) and (iv) warrants to purchase 5,893 shares of Common Stock held by TCG III-A LP which are exercisable within 60 days of this Statement. TCG III GP LP is the general partner of each of TCG III LP and TCG III-A LP and may be deemed to have voting, investment and dispositive power with respect to these securities. Peter Svennilson and Tim Kutzkey, a member of the Issuer's board of directors, are the managing partners of TCG III GP LP and may each be deemed to share voting, investment and dispositive power with respect to these securities. Excludes (a) warrants to purchase 594,625 shares of Common Stock held by TCG III LP which are not exercisable within 60 days of this Statement due to beneficial ownership limitations and (b) warrants to purchase 671,518 shares of Common Stock held by TCG III-A LP which are not exercisable within 60 days of this Statement due to beneficial ownership limitations. Based on 17,807,990 shares outstanding, comprised of (i) 11,753,558 shares of Common Stock outstanding as of August 4, 2026, as reported by the Issuer (as defined in Item 1(b) below) in its quarterly report on Form 10-Q filed with the Securities and Exchange Commission (the Commission) on August 6, 2026 (the Form 10-Q), plus (ii) 6,043,321 shares of Common Stock issued in the the second tranche of the Issuer's private placement which closed on October 20, 2026 (the Private Placement), as disclosed to the Reporting Persons by the Issuer, plus (iii) 5,218 shares underlying warrants to purchase shares of Common Stock held by TCG III LP which are exercisable within 60 days of this Statement, plus (iv) 5,893 shares underlying warrants to purchase shares of Common Stock held by TCG III-A LP which are exercisable within 60 days of this Statement.

SCHEDULE 13D

CUSIP Number(s): 86889P208

1

Name of reporting person

The Column Group III, LP

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

WC

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 1,391,340.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 1,391,340.00

11

Aggregate amount beneficially owned by each reporting person

1,391,340.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

7.8 %

14

Type of Reporting Person (See Instructions)

PN

Comment for Type of Reporting Person:

Consists of (i) 1,386,122 shares of Common Stock held of record by TCG III LP and (ii) warrants to purchase 5,218 shares of Common Stock held by TCG III LP which are exercisable within 60 days of this Statement. TCG III GP LP is the general partner of TCG III LP and may be deemed to have voting, investment and dispositive power with respect to these securities. Peter Svennilson and Tim Kutzkey, a member of the Issuer's board of directors, are the managing partners of TCG III GP LP and may each be deemed to share voting, investment and dispositive power with respect to these securities. Excludes warrants to purchase 594,625 shares of Common Stock held by TCG III LP which are not exercisable within 60 days of this Statement due to beneficial ownership limitations. Based on 17,802,097 shares outstanding, comprised of (i) 11,753,558 shares of Common Stock outstanding as of August 4, 2026, as reported by the Issuer in the Form 10-Q, plus (ii) 6,043,321 shares of Common Stock issued in the Private Placement, as disclosed to the Reporting Persons by the Issuer, plus (iii) 5,218 shares underlying warrants to purchase shares of Common Stock held by TCG III LP which are exercisable within 60 days of this Statement.

SCHEDULE 13D

CUSIP Number(s): 86889P208

1

Name of reporting person

The Column Group III-A, LP

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

WC

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 1,571,204.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 1,571,204.00

11

Aggregate amount beneficially owned by each reporting person

1,571,204.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

8.8 %

14

Type of Reporting Person (See Instructions)

PN

Comment for Type of Reporting Person:

Consists of (i) 1,565,311 shares of Common Stock held of record by TCG III-A LP and (ii) warrants to purchase 5,893 shares of Common Stock held by TCG III-A LP which are exercisable within 60 days of this Statement. TCG III GP LP 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. Peter Svennilson and Tim Kutzkey, a member of the Issuer's board of directors, are the managing partners of TCG III GP LP and may each be deemed to share voting, investment and dispositive power with respect to these securities. Excludes warrants to purchase 671,518 shares of Common Stock held by TCG III-A LP which are not exercisable within 60 days of this Statement due to beneficial ownership limitations. Based on 17,802,772 shares outstanding, comprised of (i) 11,753,558 shares of Common Stock outstanding as of August 4, 2026, as reported by the Issuer in the Form 10-Q, plus (ii) 6,043,321 shares of Common Stock issued in the Private Placement, as disclosed to the Reporting Persons by the Issuer, plus (iii) 5,893 shares underlying warrants to purchase shares of Common Stock held by TCG III-A LP which are exercisable within 60 days of this Statement.

SCHEDULE 13D

CUSIP Number(s): 86889P208

1

Name of reporting person

The Column Group Opportunity III, LP

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

WC

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 862,068.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 862,068.00

11

Aggregate amount beneficially owned by each reporting person

862,068.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

4.8 %

14

Type of Reporting Person (See Instructions)

PN

Comment for Type of Reporting Person:

Consists of 862,068 shares of Common Stock held of record by TCG Opportunity III LP (as defined in Item 2(a)). TCG Opportunity III GP LP (as defined in Item 2(a)) 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 (as defined in Item 2(a)) 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. Peter Svennilson and Tim Kutzkey, a member of the Issuer's board of directors, are the managing members of TCG Opportunity III GP LLC and may each be deemed to share voting, investment and dispositive power with respect to these securities. Excludes warrants to purchase 431,034 shares of Common Stock held by TCG Opportunity III LP which are not exercisable within 60 days of this Statement due to beneficial ownership limitations. Based on 17,796,879 shares outstanding, comprised of (i) 11,753,558 shares of Common Stock outstanding as of August 4, 2026, as reported by the Issuer in the Form 10-Q, plus (ii) 6,043,321 shares of Common Stock issued in the Private Placement, as disclosed to the Reporting Persons by the Issuer.

SCHEDULE 13D

CUSIP Number(s): 86889P208

1

Name of reporting person

The Column Group Opportunity III GP, LP

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

AF

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 862,068.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 862,068.00

11

Aggregate amount beneficially owned by each reporting person

862,068.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

4.8 %

14

Type of Reporting Person (See Instructions)

PN

Comment for Type of Reporting Person:

Consists of 862,068 shares of Common Stock held of record by TCG Opportunity III 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 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. Peter Svennilson and Tim Kutzkey, a member of the Issuer's board of directors, are the managing members of TCG Opportunity III GP LLC and may each be deemed to share voting, investment and dispositive power with respect to these securities. Excludes warrants to purchase 431,034 shares of Common Stock held by TCG Opportunity III LP which are not exercisable within 60 days of this Statement due to beneficial ownership limitations. Based on 17,796,879 shares outstanding, comprised of (i) 11,753,558 shares of Common Stock outstanding as of August 4, 2026, as reported by the Issuer in the Form 10-Q, plus (ii) 6,043,321 shares of Common Stock issued in the Private Placement, as disclosed to the Reporting Persons by the Issuer.

SCHEDULE 13D

CUSIP Number(s): 86889P208

1

Name of reporting person

TCG Opportunity III GP, LLC

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

AF

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 862,068.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 862,068.00

11

Aggregate amount beneficially owned by each reporting person

862,068.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

4.8 %

14

Type of Reporting Person (See Instructions)

OO

Comment for Type of Reporting Person:

Consists of 862,068 shares of Common Stock held of record by TCG Opportunity III 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 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. Peter Svennilson and Tim Kutzkey, a member of the Issuer's board of directors, are the managing members of TCG Opportunity III GP LLC and may each be deemed to share voting, investment and dispositive power with respect to these securities. Excludes warrants to purchase 431,034 shares of Common Stock held by TCG Opportunity III LP which are not exercisable within 60 days of this Statement due to beneficial ownership limitations. Based on 17,796,879 shares outstanding, comprised of (i) 11,753,558 shares of Common Stock outstanding as of August 4, 2026, as reported by the Issuer in the Form 10-Q, plus (ii) 6,043,321 shares of Common Stock issued in the Private Placement, as disclosed to the Reporting Persons by the Issuer.

SCHEDULE 13D

CUSIP Number(s): 86889P208

1

Name of reporting person

Tim Kutzkey

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

AF

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 3,824,612.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 3,824,612.00

11

Aggregate amount beneficially owned by each reporting person

3,824,612.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

21.5 %

14

Type of Reporting Person (See Instructions)

IN

Comment for Type of Reporting Person:

Consists of (i) 1,386,122 shares of Common Stock held of record by TCG III LP, (ii) warrants to purchase 5,218 shares of Common Stock held by TCG III LP which are exercisable within 60 days of this Statement, (iii) 1,565,311 shares of Common Stock held of record by TCG III-A LP, (iv) warrants to purchase 5,893 shares of Common Stock held by TCG III-A LP which are exercisable within 60 days of this Statement and (v) 862,068 shares of Common Stock held of record by TCG Opportunity III LP. TCG III GP LP is the general partner of each of TCG III LP and TCG III-A LP and may be deemed to have voting, investment and dispositive power with respect to these securities. 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 the securities held by TCG Opportunity III LP. 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 the securities held by TCG Opportunity III LP. Peter Svennilson and Tim Kutzkey, a member of the Issuer's board of directors, are the managing partners of TCG III GP LP and the managing members of TCG Opportunity III GP LLC and may each be deemed to share voting, investment and dispositive power with respect to these securities. Excludes (a) warrants to purchase 594,625 shares of Common Stock held by TCG III LP which are not exercisable within 60 days of this Statement due to beneficial ownership limitations, (b) warrants to purchase 671,518 shares of Common Stock held by TCG III-A LP which are not exercisable within 60 days of this Statement due to beneficial ownership limitations and (c) warrants to purchase 431,034 shares of Common Stock held by TCG Opportunity III LP which are not exercisable within 60 days of this Statement due to beneficial ownership limitations. Based on 17,807,990 shares outstanding, comprised of (i) 11,753,558 shares of Common Stock outstanding as of August 4, 2026, as reported by the Issuer in the Form 10-Q, plus (ii) 6,043,321 shares of Common Stock issued in the Private Placement, as disclosed to the Reporting Persons by the Issuer, plus (iii) 5,218 shares underlying warrants to purchase shares of Common Stock held by TCG III LP which are exercisable within 60 days of this Statement, plus (iv) 5,893 shares underlying warrants to purchase shares of Common Stock held by TCG III-A LP which are exercisable within 60 days of this Statement.

SCHEDULE 13D

CUSIP Number(s): 86889P208

1

Name of reporting person

Peter Svennilson

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

AF

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

SWEDEN

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 3,824,612.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 3,824,612.00

11

Aggregate amount beneficially owned by each reporting person

3,824,612.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

21.5 %

14

Type of Reporting Person (See Instructions)

IN

Comment for Type of Reporting Person:

Consists of (i) 1,386,122 shares of Common Stock held of record by TCG III LP, (ii) warrants to purchase 5,218 shares of Common Stock held by TCG III LP which are exercisable within 60 days of this Statement, (iii) 1,565,311 shares of Common Stock held of record by TCG III-A LP, (iv) warrants to purchase 5,893 shares of Common Stock held by TCG III-A LP which are exercisable within 60 days of this Statement and (v) 862,068 shares of Common Stock held of record by TCG Opportunity III LP. TCG III GP LP is the general partner of each of TCG III LP and TCG III-A LP and may be deemed to have voting, investment and dispositive power with respect to these securities. 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 the securities held by TCG Opportunity III LP. 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 the securities held by TCG Opportunity III LP. Peter Svennilson and Tim Kutzkey, a member of the Issuer's board of directors, are the managing partners of TCG III GP LP and the managing members of TCG Opportunity III GP LLC and may each be deemed to share voting, investment and dispositive power with respect to these securities. Excludes (a) warrants to purchase 594,625 shares of Common Stock held by TCG III LP which are not exercisable within 60 days of this Statement due to beneficial ownership limitations, (b) warrants to purchase 671,518 shares of Common Stock held by TCG III-A LP which are not exercisable within 60 days of this Statement due to beneficial ownership limitations and (c) warrants to purchase 431,034 shares of Common Stock held by TCG Opportunity III LP which are not exercisable within 60 days of this Statement due to beneficial ownership limitations. Based on 17,807,990 shares outstanding, comprised of (i) 11,753,558 shares of Common Stock outstanding as of August 4, 2026, as reported by the Issuer in the Form 10-Q, plus (ii) 6,043,321 shares of Common Stock issued in the Private Placement, as disclosed to the Reporting Persons by the Issuer, plus (iii) 5,218 shares underlying warrants to purchase shares of Common Stock held by TCG III LP which are exercisable within 60 days of this Statement, plus (iv) 5,893 shares underlying warrants to purchase shares of Common Stock held by TCG III-A LP which are exercisable within 60 days of this Statement.

SCHEDULE 13D

Item 1.	Security and Issuer
(a)	Title of Class of Securities: Common Stock, $0.0001 par value per share
(b)	Name of Issuer: Surrozen, Inc.
(c)	Address of Issuer's Principal Executive Offices: 171 Oyster Point Blvd, Suite 400, South San Francisco, CALIFORNIA , 94080.
Item 1 Comment: Explanatory Note: This Amendment No. 7 (this Amendment No. 7) supplements and amends the Schedule 13D relating to the Common Stock of the Issuer that was filed with the Commission on August 23, 2021, as amended by Amendment No. 1 that was filed with the Commission on February 13, 2023, by Amendment No. 2 that was filed with the Commission on April 8, 2024, by Amendment No. 3 that was filed with the Commission on April 17, 2024, Amendment No. 4 that was filed with the Commission on March 28, 2025, by Amendment No. 5 that was filed with the Commission on January 22, 2026 and by Amendment No. 6 that was filed with the Commission on May 15, 2026 (collectively, the Original Schedule 13D). This Amendment No. 7 is being filed to update the aggregate percentage of the Common Stock owned by the Reporting Persons due to dilution caused by the Issuer's sales of additional shares of Common Stock from time to time since the date of the Original 13D. Only those items that are reported are hereby amended; all other items reported in the Original Schedule 13D remain unchanged. Capitalized terms contained herein but not otherwise defined shall have the meanings ascribed to such terms in the Original Schedule 13D.
Item 2.	Identity and Background
(a)	This Statement is being filed by The Column Group III, LP (TCG III LP), The Column Group III-A, LP (TCG III-A LP), The Column Group III GP, LP (TCG III GP LP), The Column Group Opportunity III, LP (TCG Opportunity III LP), The Column Group Opportunity III GP, LP (TCG Opportunity III GP LP), TCG Opportunity III GP, LLC (TCG Opportunity III GP LLC, together with TCG III LP, TCG III-A LP, TCG III GP LP, TCG Opportunity III LP, and TCG Opportunity III GP LP, the Reporting Entities), Tim Kutzkey, a member of the Issuer's board of directors and Peter Svennilson. The Reporting Entities, Mr. Svennilson and Dr. Kutzkey are collectively referred to as the Reporting Persons. The agreement among the Reporting Persons to file jointly in accordance with the provisions of Rule 13d-1(k)(1) under the Act is attached as Exhibit 1 to Amendment No. 5. Each Reporting Person disclaims beneficial ownership of all securities reported in this Statement except to the extent of such Reporting Person's pecuniary interest therein, other than those securities reported herein as being held directly by such Reporting Person.
(b)	The address of the principal offices of each Reporting Entity 1 Letterman Drive, Building D, Suite M-900, San Francisco, CA 94129.
(c)	Each of TCG III LP, TCG III-A LP and TCG Opportunity III LP is a venture capital investment entity. TCG III GP LP is the general partner of each of TCG III LP and TCG III-A LP. TCG Opportunity III GP LP is the general partner of TCG Opportunity III LP. 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. Dr. Kutzkey and Mr. Svennilson are the managing partners of TCG III GP LP and the managing members of TCG Opportunity III GP LLC, and are each engaged through venture capital investment entities in acquiring, holding and disposing of interests in various companies for investment purposes.
(d)	During the past five years, none of the Reporting Persons have been convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors).
(e)	None of the Reporting Persons are, nor during the last five years have been, a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such proceeding was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws.
(f)	Each of TCG III GP LP, TCG III LP, TCG III-A LP, TCG Opportunity III LP and TCG Opportunity III GP LP is a limited partnership organized under the laws of the State of Delaware. TCG Opportunity III GP LLC is a limited company organized under the laws of the State of Delaware. Dr. Kutzkey is a citizen of the United States of America. Mr. Svennilson is a citizen of Sweden.
Item 3.	Source and Amount of Funds or Other Consideration
	Item 3 of the Original Schedule 13D is hereby amended by adding the following as the last paragraphs thereof: On October 20, 2026, in connection with the Private Placement, TCG III LP purchased units comprised of (i) 485,830 shares of Common Stock and (ii) 242,915 Series E Common Warrants for a purchase price of $11.60 per unit or $5,635,628.00 in the aggregate. On October 20, 2026, in connection with the Private Placement, TCG III-A LP purchased units comprised of (i) 548,653 shares of Common Stock and (ii) 274,327 Series E Common Warrants for a purchase price of $11.60 per unit or $6,364,374.80 in the aggregate. On October 20, 2026, in connection with the Private Placement, TCG Opportunity III LP purchased units comprised of (i) 517,241 shares of Common Stock and (ii) 258,620 Series E Common Warrants in the Private Placement for a purchase price of $11.60 per unit or $5,999,995.60 in the aggregate.
Item 4.	Purpose of Transaction
	The information set forth in Item 4 of the Original Schedule 13D is incorporated herein by reference.
Item 5.	Interest in Securities of the Issuer
(a)	See Items 7-11 of the cover pages of this Amendment No. 7.
(b)	See Items 7-11 of the cover pages of this Amendment No. 7.
(c)	Except as reported in this Statement, none of the Reporting Persons has effected any transactions in the Issuer's securities within the past 60 days.
(d)	Under certain circumstances set forth in the limited partnership agreements of TCG III LP, TCG III-A LP and TCG Opportunity III LP, the general partner and limited partners of each of TCG III LP, TCG III-A LP and TCG Opportunity III LP may be deemed to have the right to receive dividends from, or the proceeds from, the sale of shares of the Issuer owned by such entity of which they are a partner.
(e)	Not applicable.
Item 6.	Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer
	The information set forth in Item 3 and Item 4 of this Statement and the information set forth in Item 6 of the Original Schedule 13D are incorporated herein by reference.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

The Column Group III GP, LP

Signature:	/s/ James Evangelista
Name/Title:	James Evangelista, Attorney-in-Fact
Date:	10/22/2026

The Column Group III, LP

Signature:	/s/ James Evangelista
Name/Title:	James Evangelista, Attorney-in-Fact
Date:	10/22/2026

The Column Group III-A, LP

Signature:	/s/ James Evangelista
Name/Title:	James Evangelista, Attorney-in-Fact
Date:	10/22/2026

The Column Group Opportunity III, LP

Signature:	/s/ James Evangelista
Name/Title:	James Evangelista, Attorney-in-Fact
Date:	10/22/2026

The Column Group Opportunity III GP, LP

Signature:	/s/ James Evangelista
Name/Title:	James Evangelista, Attorney-in-Fact
Date:	10/22/2026

TCG Opportunity III GP, LLC

Signature:	/s/ James Evangelista
Name/Title:	James Evangelista, Attorney-in-Fact
Date:	10/22/2026

Tim Kutzkey

Signature:	/s/ James Evangelista
Name/Title:	James Evangelista, Attorney-in-Fact
Date:	10/22/2026

Peter Svennilson

Signature:	/s/ James Evangelista
Name/Title:	James Evangelista, Attorney-in-Fact
Date:	10/22/2026