SEC Filing | Surrozen

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SCHEDULE 13G

SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, DC 20549

Under the Securities Exchange Act of 1934
(Amendment No. )*

Surrozen, Inc.

(Name of Issuer)

Common Stock, par value $0.0001 per share

(Title of Class of Securities)

86889P109

(CUSIP Number)

December 31, 2021

(Date of Event which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

x Rule 13d-1(b)

¨ Rule 13d-1(c)

¨ Rule 13d-1(d)

*The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

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 (the “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).

CUSIP No. 86889P109

NAMES OF REPORTING PERSONS

Baker Bros. Advisors LP

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)

(a) ¨

(b) ¨

SEC USE ONLY

CITIZENSHIP OR PLACE OF ORGANIZATION

Delaware

NUMBER OF
SHARES
BENEFICIALLY
OWNED BY
EACH
REPORTING
PERSON
WITH

SOLE VOTING POWER

3,333,333 (1)

SHARED VOTING POWER

-0-

SOLE DISPOSITIVE POWER

3,333,333 (1)

SHARED DISPOSITIVE POWER

-0-

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

3,333,333 (1)

CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

(See Instructions)

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

9.3% (1)(2)

TYPE OF REPORTING PERSON (See Instructions)

IA, PN

(1)

Includes 833,333 shares of common stock (“Common Stock”) of Surrozen Inc. (the “Issuer”) issuable upon exercise of the 2026 Warrants (as defined in Item 4) directly held by 667, L.P. (“667”) and Baker Brothers Life Sciences, L.P. (“Life Sciences”, and together with 667, the “Funds”).

(2)

Based 35,027,407 shares of the Common Stock of the Issuer outstanding as of November 10, 2021, as reported in the Issuer’s Form 10-Q filed with the Securities and Exchange Commission (the “SEC”) on November 15, 2021, together with the shares that would be issued in connection with the exercise of the 2026 Warrants.

CUSIP No. 86889P109

NAMES OF REPORTING PERSONS

Baker Bros. Advisors (GP) LLC

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)

(a) ¨

(b) ¨

SEC USE ONLY

CITIZENSHIP OR PLACE OF ORGANIZATION

Delaware

NUMBER OF
SHARES
BENEFICIALLY
OWNED BY
EACH
REPORTING
PERSON
WITH

SOLE VOTING POWER

3,333,333 (1)

SHARED VOTING POWER

-0-

SOLE DISPOSITIVE POWER

3,333,333 (1)

SHARED DISPOSITIVE POWER

-0-

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

3,333,333 (1)

CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

(See Instructions)

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

9.3% (1)(2)

TYPE OF REPORTING PERSON (See Instructions)

HC, OO

(1)

Includes 833,333 shares of Common Stock of the Issuer issuable upon exercise of the 2026 Warrants directly held by the Funds.

(2)

Based on 35,027,407 shares of the Common Stock of the Issuer outstanding as of November 10, 2021, as reported in the Issuer’s Form 10-Q filed with the SEC on November 15, 2021, together with the shares that would be issued in connection with the exercise of the 2026 Warrants.

CUSIP No. 86889P109

NAMES OF REPORTING PERSONS

Felix J. Baker

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)

(a) ¨

(b) ¨

SEC USE ONLY

CITIZENSHIP OR PLACE OF ORGANIZATION

United States

NUMBER OF
SHARES
BENEFICIALLY
OWNED BY
EACH
REPORTING
PERSON
WITH

SOLE VOTING POWER

3,333,333 (1)

SHARED VOTING POWER

-0-

SOLE DISPOSITIVE POWER

3,333,333 (1)

SHARED DISPOSITIVE POWER

-0-

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

3,333,333 (1)

CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

(See Instructions)

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

9.3% (1)(2)

TYPE OF REPORTING PERSON (See Instructions)

IN, HC

(1)

Includes 833,333 shares of Common Stock of the Issuer issuable upon exercise of the 2026 Warrants directly held by the Funds.

(2)

CUSIP No. 86889P109

NAMES OF REPORTING PERSONS

Julian C. Baker

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)

(a) ¨

(b) ¨

SEC USE ONLY

CITIZENSHIP OR PLACE OF ORGANIZATION

United States

NUMBER OF
SHARES
BENEFICIALLY
OWNED BY
EACH
REPORTING
PERSON
WITH

SOLE VOTING POWER

3,333,333 (1)

SHARED VOTING POWER

-0-

SOLE DISPOSITIVE POWER

3,333,333 (1)

SHARED DISPOSITIVE POWER

-0-

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

3,333,333 (1)

CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

(See Instructions)

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

9.3% (1)(2)

TYPE OF REPORTING PERSON (See Instructions)

IN, HC

(1)

Includes 833,333 shares of Common Stock of the Issuer issuable upon exercise of the 2026 Warrants directly held by the Funds.

(2)

Schedule 13G

	Item 1(a)	Name of Issuer:

		Surrozen, Inc. (the “Issuer”)

	Item 1(b)	Address of Issuer’s Principal Executive Offices:

		171 Oyster Point Blvd, Suite 400

		South San Francisco, CA 94080

	Item 2(a)	Name of Person Filing:

		This Schedule 13G is being filed jointly by Baker Bros. Advisors LP (the “Adviser”), Baker Bros. Advisors (GP) LLC (the “Adviser GP”), Felix J. Baker and Julian C. Baker (collectively, the “Reporting Persons”).

	Item 2(b)	Address of Principal Business Office or, if None, Residence:

		The business address of each of the Reporting Persons is:

		c/o Baker Bros. Advisors LP

		860 Washington Street, 3^rd Floor

		New York, NY 10014

		(212) 339-5690

	Item 2(c)	Citizenship:

		The Adviser is a limited partnership organized under the laws of the State of Delaware. The Adviser GP is a limited liability company organized under the laws of the State of Delaware. The citizenship of each of Julian C. Baker and Felix J. Baker is the United States of America.

	Item 2(d)	Title of Class of Securities:

		Common Stock, par value $0.0001 per share (“Common Stock”).

	Item 2(e)	CUSIP Number:

		86889P109

Item 3

If this statement is filed pursuant to §§240.13d-1(b) or (c), check whether the person filing is a:

(a) ¨ Broker or dealer registered under Section 15 of the Exchange Act.

(b) ¨ Bank as defined in section 3(a)(6) of the Exchange Act.

(d) ¨ Investment company registered under section 8 of the Investment Company Act of 1940.

(e) x An investment adviser in accordance with Rule 13d-1(b)(1)(ii)(E).

(f) ¨ An employee benefit plan or endowment fund in accordance with Rule 13d-1(b)(1)(ii)(F).

(g) x A parent holding company or control person in accordance with Rule 13d-1(b)(1)(ii)(G).

(h) ¨ A savings association as defined in Section 3(b) of the Federal Deposit Insurance Act.

(i) ¨ A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940.

(j) ¨ Group, in accordance with Rule 13d-1(b)(1)(ii)(J).

Item 4

Ownership:

Items 5 through 9 and 11 of each of the cover pages to this Schedule 13G are incorporated herein by reference. Set forth below is the aggregate number of shares of Common Stock directly held by each of Baker Brothers Life Sciences, L.P. (“Life Sciences”) and 667, L.P. (“667”, and together with Life Sciences, the “Funds”) which may be deemed to be indirectly beneficially owned by the Reporting Persons, as well as shares of Common Stock that may be acquired upon exercise of warrants exercisable at any time on a 1-for-1 basis for $11.50 per share into Common Stock expiring August 11, 2026 (the “2026 Warrants”).

The information set forth below is based on 35,027,407 shares of Common Stock outstanding as of November 10, 2021, as reported in the Issuer’s Form 10-Q filed with the Securities and Exchange Commission on November 15, 2021. Such percentage figures are calculated in accordance with Rule 13d-3 under the Securities Exchange Act of 1934, as amended (the “Exchange Act”).

Holder	Number of Shares of Common Stock we own or have the right to acquire within 60 days		Percent of Class Outstanding
667, L.P.		246,369		0.7	%
Baker Brothers Life Sciences, L.P.		3,086,964		8.6	%
Total		3,333,333		9.3	%

The Adviser GP, Felix J. Baker and Julian C. Baker as managing members of the Adviser GP, and the Adviser may be deemed to be beneficial owners of securities of the Issuer directly held by the Funds.

The Adviser GP is the sole general partner of the Adviser. Pursuant to the management agreements, as amended, among the Adviser, Life Sciences and 667 and their respective general partners, the Funds’ respective general partners relinquished to the Adviser all discretion and authority with respect to the investment and voting power of the securities held by the Funds, and thus the Adviser has completed and unlimited discretion and authority with respect to the Funds’ investments and voting power over investments.

	Item 5	Ownership of Five Percent or Less of a Class:

		If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following ¨. N/A

	Item 6	Ownership of More than Five Percent on Behalf of Another Person:

		N/A

	Item 7	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person:

		The information in Item 4 is incorporated herein by reference.

	Item 8	Identification and Classification of Members of the Group:

		N/A

	Item 9	Notice of Dissolution of Group:

		N/A

	Item 10	Certification:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and 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.

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.

February 14, 2022

BAKER BROS. ADVISORS LP

By: Baker Bros. Advisors (GP) LLC, its general partner

By:

/s/ Scott L. Lessing

Name: Scott L. Lessing
Title: President

	BAKER BROS. ADVISORS (GP) LLC

	By:	/s/ Scott L. Lessing
		Name: Scott L. Lessing Title: President

		/s/ Julian C. Baker
		Julian C. Baker

		/s/ Felix J. Baker
		Felix J. Baker

EXHIBIT 99.1

AGREEMENT

In accordance with Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, as amended, the undersigned hereby agree that this Statement on Schedule 13G relating to the Common Stock of Surrozen, Inc.is being filed with the Securities and Exchange Commission on behalf of each of them.

February 14, 2022

BAKER BROS. ADVISORS LP

By: Baker Bros. Advisors (GP) LLC, its general partner

By:

/s/ Scott L. Lessing

Name: Scott L. Lessing
Title: President

	BAKER BROS. ADVISORS (GP) LLC

	By:	/s/ Scott L. Lessing
		Name: Scott L. Lessing Title: President

		/s/ Julian C. Baker
		Julian C. Baker

		/s/ Felix J. Baker
		Felix J. Baker