UNITED STATES

 

 

SECURITIES AND EXCHANGE COMMISSION

 

 

Washington, D.C. 20549

 

 

 

 

SCHEDULE 13G

(Rule 13d-102)

 

INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULES 13d-1 (b),

(c) AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO 13d-2 (b)

(Amendment No.     )*

 

SUTRO BIOPHARMA, INC.

(Name of Issuer)

COMMON STOCK

(Title of Class of Securities)

869367 10 2

(CUSIP Number)

DECEMBER 31, 2019

(Date of Event Which Requires Filing of this Statement)

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

o

Rule 13d-1(b)

o

Rule 13d-1(c)

x

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 the disclosures provided in a prior cover page.

 

The information required in 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).

 

 

CUSIP No. 869367 10 2

 

 

1.

Name of Reporting Persons
Skyline Venture Partners V, L.P.

 

 

2.

Check the Appropriate Box if a Member of a Group (See Instructions)

 

 

(a)

o

 

 

(b)

x (1)

 

 

3.

SEC Use Only

 

 

4.

Citizenship or Place of Organization
Delaware, United States of America

 

 

 

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With:

5.

Sole Voting Power
0

 

6.

Shared Voting Power
1,960,053 (2)

 

7.

Sole Dispositive Power
0

 

8.

Shared Dispositive Power
1,960,053 (2)

 

 

9.

Aggregate Amount Beneficially Owned by Each Reporting Person
1,960,053 (2)

 

 

10.

Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

 

 

11.

Percent of Class Represented by Amount in Row (9)
8.5% (3)

 

 

12.

Type of Reporting Person (See Instructions)
PN

 

(1) This Schedule 13G is filed by Skyline Venture Partners V, L.P. (“SVP V”), Skyline Venture Management V, LLC (“SVM V”) , John G. Freund (“Freund”) and Yasunori Kaneko (“Kaneko” and together with SVP V, SVM V and Freund the “Skyline Entities”).  The Skyline Entities expressly disclaim status as a “group” for purposes of this Schedule 13G.

 

(2)  The shares are held by SVP V.  SVM V is the sole general partner of SVP V.  Freund and Kaneko are managing directors of SVM V and share voting and dispositive power over the shares held by the SVP V.

 

(3)  This percentage is calculated based upon 23,090,150  shares of the Issuer’s common stock outstanding as of November 4, 2019 as set forth in the Issuers most recent 10-Q, filed with the Securities and Exchange Commission on November 8, 2019.

 

2

 

CUSIP No. 869367 10 2

 

 

1.

Name of Reporting Persons
Skyline Venture Management V, LLC

 

 

2.

Check the Appropriate Box if a Member of a Group (See Instructions)

 

 

(a)

o

 

 

(b)

x (1)

 

 

3.

SEC Use Only

 

 

4.

Citizenship or Place of Organization
Delaware, United States of America

 

 

 

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With:

5.

Sole Voting Power
0

 

6.

Shared Voting Power
1,960,053 (2)

 

7.

Sole Dispositive Power
0

 

8.

Shared Dispositive Power
1,960,053 (2)

 

 

9.

Aggregate Amount Beneficially Owned by Each Reporting Person
1,960,053 (2)

 

 

10.

Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

 

 

11.

Percent of Class Represented by Amount in Row (9)
8.5% (3)

 

 

12.

Type of Reporting Person (See Instructions)
OO

 

(1) This Schedule 13G is filed by Skyline Venture Partners V, L.P. (“SVP V”), Skyline Venture Management V, LLC (“SVM V”) , John G. Freund (“Freund”) and Yasunori Kaneko (“Kaneko” and together with SVP V, SVM V and Freund the “Skyline Entities”).  The Skyline Entities expressly disclaim status as a “group” for purposes of this Schedule 13G.

 

(2)  The shares are held by SVP V.  SVM V is the sole general partner of SVP V.  Freund and Kaneko are managing directors of SVM V and share voting and dispositive power over the shares held by the SVP V.

 

(3)  This percentage is calculated based upon 23,090,150  shares of the Issuer’s common stock outstanding as of November 4, 2019 as set forth in the Issuers most recent 10-Q, filed with the Securities and Exchange Commission on November 8, 2019.

 

3

 

CUSIP No. 869367 10 2

 

 

1.

Name of Reporting Persons
Yasunori Kaneko

 

 

2.

Check the Appropriate Box if a Member of a Group (See Instructions)

 

 

(a)

o

 

 

(b)

x (1)

 

 

3.

SEC Use Only

 

 

4.

Citizenship or Place of Organization
California, United States of America

 

 

 

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With:

5.

Sole Voting Power
0

 

6.

Shared Voting Power
1,960,053 (2)

 

7.

Sole Dispositive Power
0

 

8.

Shared Dispositive Power
1,960,053 (2)

 

 

9.

Aggregate Amount Beneficially Owned by Each Reporting Person
1,960,053 (2)

 

 

10.

Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

 

 

11.

Percent of Class Represented by Amount in Row (9)
8.5% (3)

 

 

12.

Type of Reporting Person (See Instructions)
IN

 

(1) This Schedule 13G is filed by Skyline Venture Partners V, L.P. (“SVP V”), Skyline Venture Management V, LLC (“SVM V”) , John G. Freund (“Freund”) and Yasunori Kaneko (“Kaneko” and together with SVP V, SVM V and Freund the “Skyline Entities”).  The Skyline Entities expressly disclaim status as a “group” for purposes of this Schedule 13G.

 

(2)  The shares are held by SVP V.  SVM V is the sole general partner of SVP V.  Freund and Kaneko are managing directors of SVM V and share voting and dispositive power over the shares held by the SVP V.

 

(3)  This percentage is calculated based upon 23,090,150  shares of the Issuer’s common stock outstanding as of November 4, 2019 as set forth in the Issuers most recent 10-Q, filed with the Securities and Exchange Commission on November 8, 2019.

 

4

 

CUSIP No. 869367 10 2

 

 

1.

Name of Reporting Persons
John G. Freund 

 

 

2.

Check the Appropriate Box if a Member of a Group (See Instructions)

 

 

(a)

o

 

 

(b)

x (1)

 

 

3.

SEC Use Only

 

 

4.

Citizenship or Place of Organization
California, United States of America

 

 

 

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With:

5.

Sole Voting Power
0

 

6.

Shared Voting Power
1,960,053 (2)

 

7.

Sole Dispositive Power
0

 

8.

Shared Dispositive Power
1,960,053 (2)

 

 

9.

Aggregate Amount Beneficially Owned by Each Reporting Person
1,960,053 (2)

 

 

10.

Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

 

 

11.

Percent of Class Represented by Amount in Row (9)
8.5% (3)

 

 

12.

Type of Reporting Person (See Instructions)
IN

 

(1) This Schedule 13G is filed by Skyline Venture Partners V, L.P. (“SVP V”), Skyline Venture Management V, LLC (“SVM V”) , John G. Freund (“Freund”) and Yasunori Kaneko (“Kaneko” and together with SVP V, SVM V and Freund the “Skyline Entities”).  The Skyline Entities expressly disclaim status as a “group” for purposes of this Schedule 13G.

 

(2)  The shares are held by SVP V.  SVM V is the sole general partner of SVP V.  Freund and Kaneko are managing directors of SVM V and share voting and dispositive power over the shares held by the SVP V.

 

(3)  This percentage is calculated based upon 23,090,150  shares of the Issuer’s common stock outstanding as of November 4, 2019 as set forth in the Issuers most recent 10-Q, filed with the Securities and Exchange Commission on November 8, 2019.

 

5

 

CUSIP No. 869367 10 2

 

Introductory Note: This Statement on Schedule 13G is filed on behalf of Skyline Venture Partners V, L.P., a limited partnership organized under the laws of the State of Delaware (“SVP V”), Skyline Venture Management V, LLC, a limited liability company organized under the laws of the State of Delaware (“SVP V”),  John G. Freund (“Freund”) and Yasunori Kaneko (“Kaneko”, and together with SVP V, SVM V and Freund, the “Skyline Entities”) in respect of shares of Common Stock of Sutro Biopharma, Inc.

 

Item 1(a)

 

Name of Issuer
Sutro Biopharma, Inc.

Item 1(b)

 

Address of Issuer’s Principal Executive Offices
471 El Camino Real, Suite 101

Santa Clara, CA  95050

 

Item 2(a)

 

Name of Person Filing
Skyline Venture Partners V, L.P.

Skyline Venture Management V, LLC

John G. Freund

Yasunori Kaneko

Item 2(b)

 

Address of Principal Business Office or, if none, Residence
525 University Avenue, Suite 1350

Palo Alto, CA 94301

Item 2(c)

 

Citizenship
SVP V is a limited partnership organized in the State of Delaware.  SVM V is a limited liability company organized in the State of Delaware.  Freund and Kaneko are individuals residing in California.

Item 2(d)

 

Title of Class of Securities
Common Stock

Item 2(e)

 

CUSIP Number
869367 10 2

 

Item 3

 

Not applicable.

 

 

6

 

CUSIP No. 869367 10 2

 

Item 4

Ownership

 

Skyline Entity

 

Shares Held 

Directly

 

Sole 

Voting

 Power

 

Shared 

Voting 

Power

 

Sole 

Dispositive 

Power

 

Shared 

Dispositive 

Power

 

Beneficial 

Ownership

 

Percentage 

of Class (2)

 

Skyline Venture Partners V, L.P. (1)

 

1,960,053

 

0

 

1,960,053

 

0

 

1,960,053

 

1,960,053

 

8.5

%

Skyline Venture Management V, LLC (1)

 

0

 

0

 

1,960,053

 

0

 

1,960,053

 

1,960,053

 

8.5

%

Yasunori Kaneko (1)

 

0

 

0

 

1,960,053

 

0

 

1,960,053

 

1,960,053

 

8.5

%

John G. Freund (1)

 

0

 

0

 

1,960,053

 

0

 

1,960,053

 

1,960,053

 

8.5

%

 

(1)  The shares are held by SVP V.  SVM V is the sole general partner of SVP V.  Freund and Kaneko are managing directors of SVM V and share voting and dispositive power over the shares held by the SVP V.

 

(2)  This percentage is calculated based upon 23,090,150  shares of the Issuer’s common stock outstanding as of November 4, 2019 as set forth in the Issuers most recent 10-Q, filed with the Securities and Exchange Commission on November 8, 2019.

 

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   o.

 

Item 6

Ownership of More than Five Percent of Another Person

Not applicable.

 

Item 7

Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company

Not applicable.

 

Item 8

Identification and Classification of Members of the Group

Not applicable.

 

Item 9

Notice of Dissolution of Group

Not applicable.

 

7

 

 

CUSIP No. 869367 10 2

 

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 12, 2020

SKYLINE VENTURE PARTNERS V, L.P.

 

 

 

BY:

SKYLINE VENTURE MANAGEMENT V, LLC

 

ITS:

GENERAL PARTNER

 

 

 

 

By:

/s/ Kerensa Kenny as attorney-in-fact

 

 

John G. Freund

 

 

Managing Director

 

 

 

 

SKYLINE VENTURE MANAGEMENT V, LLC

 

 

 

 

By:

/s/ Kerensa Kenny as attorney-in-fact

 

 

John G. Freund

 

 

Managing Member

 

 

 

 

/s/ Kerensa Kenny as attorney-in-fact

 

 

YASUNORI KANEKO

 

 

 

 

/s/ Kerensa Kenny as attorney-in-fact

 

 

JOHN G. FREUND

 

8

 

CUSIP No. 869367 10 2

 

EXHIBIT INDEX

 

Exhibit No.

 

 

99.1

 

Agreement pursuant to 13d-1(k)(1) among Skyline Venture Partners V, L.P., Skyline Venture Management V, LLC John G. Freund and Yasunori Kaneko.