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. 3)
Scholar Rock Holding Corporation
(Name of Issuer)
Common Stock, par value $0.001 per share
(Title of Class of Securities)
80706P103
(CUSIP Number)
December 31, 2023
(Date of Event Which Requires Filing of this Statement)
Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
☐ 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 (“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).
(Continued on following pages)
| CUSIP #80706P103 | Page 2 of 14 |
| 1 | NAME OF REPORTING PERSONS
Polaris Venture Partners VI, L.P. | |||||
| 2 | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☐ (b) ☒
| |||||
| 3 | SEC USE ONLY
| |||||
| 4 | CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware | |||||
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH | 5 | SOLE VOTING POWER
2,406,309 (1) | ||
| 6 | SHARED VOTING POWER
0 | |||
| 7 | SOLE DISPOSITIVE POWER
2,406,309 (1) | |||
| 8 | SHARED DISPOSITIVE POWER
0 |
| 9 | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
2,406,309 (1) | |||||
| 10 | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
☐ | |||||
| 11 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
3.3% (2) | |||||
| 12 | TYPE OF REPORTING PERSON
PN | |||||
| (1) | 2,123,347 of such shares are held of record by PVP VI (as defined in Item 2(a) of the Original Schedule 13G) and 282,962 of such shares are shares underlying a warrant issued to PVP VI and which is exercisable within 60 days of the filing of this Amendment (as defined below). PVM VI (as defined in Item 2(a) of the Original Schedule 13G), the general partner of PVP VI, may be deemed to have voting, investment and dispositive power with respect to these securities. David Barrett, Brian Chee, Jonathan A. Flint, Terrance G. McGuire, Amir Nashat, a member of the Issuer’s board of directors, and Bryce Youngren are the managing members of PVM VI and may each be deemed to share voting, investment and dispositive power with respect to these securities. |
| (2) | Based on 72,426,220 shares of the Issuer’s Common Stock, calculated as follows (i) 72,143,258 shares of the Issuer’s Common Stock outstanding as of November 2, 2023, as reported by the Issuer in its Form 10-Q for the quarter ended September 30, 2023, filed with the US Securities and Exchange Commission (the “Commission”) on November 7, 2023 (the “Form 10-Q”) plus (ii) 282,962 shares of the Issuer’s Common Stock are shares underlying a warrant issued to PVP VI and which is exercisable within 60 days of the filing of this Amendment. |
| CUSIP #80706P103 | Page 3 of 14 |
| 1 | NAME OF REPORTING PERSONS
Polaris Venture Partners Founders’ Fund VI, L.P. | |||||
| 2 | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☐ (b) ☒
| |||||
| 3 | SEC USE ONLY
| |||||
| 4 | CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware | |||||
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH | 5 | SOLE VOTING POWER
140,616 (1) | ||
| 6 | SHARED VOTING POWER
0 | |||
| 7 | SOLE DISPOSITIVE POWER
140,616 (1) | |||
| 8 | SHARED DISPOSITIVE POWER
0 |
| 9 | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
140,616 (1) | |||||
| 10 | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
☐ | |||||
| 11 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
0.2% (2) | |||||
| 12 | TYPE OF REPORTING PERSON
PN | |||||
| (1) | 124,080 of such shares are held of record by PVPFF VI (as defined in Item 2(a) of the Original Schedule 13G) and 16,536 of such shares are shares underlying a warrant issued to PVPFF VI and which is exercisable within 60 days of the filing of this Amendment. PVM VI, the general partner of PVPFF VI, may be deemed to have voting, investment and dispositive power with respect to these securities. David Barrett, Brian Chee, Jonathan A. Flint, Terrance G. McGuire, Amir Nashat, a member of the Issuer’s board of directors, and Bryce Youngren are the managing members of PVM VI and may each be deemed to share voting, investment and dispositive power with respect to these securities. |
| (2) | Based on 72,159,794 shares of the Issuer’s Common Stock, calculated as follows (i) 72,143,258 shares of the Issuer’s Common Stock outstanding as of November 2, 2023, as reported by the Issuer in the Form 10-Q plus 16,536 shares of the Issuer’s Common Stock are shares underlying a warrant issued to PVPFF VI and which is exercisable within 60 days of the filing of this Amendment. |
| CUSIP #80706P103 | Page 4 of 14 |
| 1 | NAME OF REPORTING PERSONS
Polaris Venture Management Co VI, L.L.C. | |||||
| 2 | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☐ (b) ☒
| |||||
| 3 | SEC USE ONLY
| |||||
| 4 | CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware | |||||
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH | 5 | SOLE VOTING POWER
2,546,925 (1) | ||
| 6 | SHARED VOTING POWER
0 | |||
| 7 | SOLE DISPOSITIVE POWER
2,546,925 (1) | |||
| 8 | SHARED DISPOSITIVE POWER
0 |
| 9 | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
2,546,925 (1) | |||||
| 10 | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
☐ | |||||
| 11 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
3.5% (2) | |||||
| 12 | TYPE OF REPORTING PERSON
OO | |||||
| (1) | 2,123,347 of such shares are held of record by PVP VI, 282,962 of such shares are shares underlying a warrant issued to PVP VI and which is exercisable within 60 days of the filing of this Amendment, 124,080 of such shares are held of record by PVPFF VI and 16,536 of such shares are shares underlying a warrant issued to PVPFF VI and which is exercisable within 60 days of the filing of this Amendment. PVM VI, the general partner of each of PVP VI and PVPFF VI, may be deemed to have voting, investment and dispositive power with respect to these securities. David Barrett, Brian Chee, Jonathan A. Flint, Terrance G. McGuire, Amir Nashat, a member of the Issuer’s board of directors, and Bryce Youngren are the managing members of PVM VI and may each be deemed to share voting, investment and dispositive power with respect to these securities. |
| (2) | Based on 72,442,756 shares of the Issuer’s Common Stock, calculated as follows (i) 72,143,258 shares of the Issuer’s Common Stock outstanding as of November 2, 2023, as reported by the Issuer in the Form 10-Q plus (ii) 282,962 shares of the Issuer’s Common Stock are shares underlying a warrant issued to PVP VI and which is exercisable within 60 days of the filing of this Amendment plus (iii) 16,536 shares of the Issuer’s Common Stock are shares underlying a warrant issued to PVPFF VI and which is exercisable within 60 days of the filing of this Amendment. |
| CUSIP #80706P103 | Page 5 of 14 |
| 1 | NAME OF REPORTING PERSONS
David Barrett | |||||
| 2 | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☐ (b) ☒
| |||||
| 3 | SEC USE ONLY
| |||||
| 4 | CITIZENSHIP OR PLACE OF ORGANIZATION
United States | |||||
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH | 5 | SOLE VOTING POWER
0 | ||
| 6 | SHARED VOTING POWER
2,546,925 (1) | |||
| 7 | SOLE DISPOSITIVE POWER
0 | |||
| 8 | SHARED DISPOSITIVE POWER
2,546,925 (1) |
| 9 | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
2,546,925 (1) | |||||
| 10 | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
☐ | |||||
| 11 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
3.5% (2) | |||||
| 12 | TYPE OF REPORTING PERSON
IN | |||||
| (1) | 2,123,347 of such shares are held of record by PVP VI, 282,962 of such shares are shares underlying a warrant issued to PVP VI and which is exercisable within 60 days of the filing of this Amendment, 124,080 of such shares are held of record by PVPFF VI and 16,536 of such shares are shares underlying a warrant issued to PVPFF VI and which is exercisable within 60 days of the filing of this Amendment. PVM VI, the general partner of each of PVP VI and PVPFF VI, may be deemed to have voting, investment and dispositive power with respect to these securities. David Barrett, Brian Chee, Jonathan A. Flint, Terrance G. McGuire, Amir Nashat, a member of the Issuer’s board of directors, and Bryce Youngren are the managing members of PVM VI and may each be deemed to share voting, investment and dispositive power with respect to these securities. |
| (2) | Based on 72,442,756 shares of the Issuer’s Common Stock, calculated as follows (i) 72,143,258 shares of the Issuer’s Common Stock outstanding as of November 2, 2023, as reported by the Issuer in the Form 10-Q plus (ii) 282,962 shares of the Issuer’s Common Stock are shares underlying a warrant issued to PVP VI and which is exercisable within 60 days of the filing of this Amendment plus (iii) 16,536 shares of the Issuer’s Common Stock are shares underlying a warrant issued to PVPFF VI and which is exercisable within 60 days of the filing of this Amendment. |
| CUSIP #80706P103 | Page 6 of 14 |
| 1 | NAME OF REPORTING PERSONS
Brian Chee | |||||
| 2 | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☐ (b) ☒
| |||||
| 3 | SEC USE ONLY
| |||||
| 4 | CITIZENSHIP OR PLACE OF ORGANIZATION
United States | |||||
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH | 5 | SOLE VOTING POWER
39,339 (1) | ||
| 6 | SHARED VOTING POWER
2,546,925 (2) | |||
| 7 | SOLE DISPOSITIVE POWER
39,339 (1) | |||
| 8 | SHARED DISPOSITIVE POWER
2,546,925 (2) |
| 9 | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
2,586,264 (1) (2) | |||||
| 10 | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
☐ | |||||
| 11 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
3.6% (3) | |||||
| 12 | TYPE OF REPORTING PERSON
IN | |||||
| (1) | All of such shares are held by Brian Chee directly. |
| (2) | 2,123,347 of such shares are held of record by PVP VI, 282,962 of such shares are shares underlying a warrant issued to PVP VI and which is exercisable within 60 days of the filing of this Amendment, 124,080 of such shares are held of record by PVPFF VI and 16,536 of such shares are shares underlying a warrant issued to PVPFF VI and which is exercisable within 60 days of the filing of this Amendment. PVM VI, the general partner of each of PVP VI and PVPFF VI, may be deemed to have voting, investment and dispositive power with respect to these securities. David Barrett, Brian Chee, Jonathan A. Flint, Terrance G. McGuire, Amir Nashat, a member of the Issuer’s board of directors, and Bryce Youngren are the managing members of PVM VI and may each be deemed to share voting, investment and dispositive power with respect to these securities. |
| (3) | Based on 72,442,756 shares of the Issuer’s Common Stock, calculated as follows (i) 72,143,258 shares of the Issuer’s Common Stock outstanding as of November 2, 2023, as reported by the Issuer in the Form 10-Q plus (ii) 282,962 shares of the Issuer’s Common Stock are shares underlying a warrant issued to PVP VI and which is exercisable within 60 days of the filing of this Amendment plus (iii) 16,536 shares of the Issuer’s Common Stock are shares underlying a warrant issued to PVPFF VI and which is exercisable within 60 days of the filing of this Amendment. |
| CUSIP #80706P103 | Page 7 of 14 |
| 1 | NAME OF REPORTING PERSONS
Jonathan A. Flint | |||||
| 2 | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☐ (b) ☒
| |||||
| 3 | SEC USE ONLY
| |||||
| 4 | CITIZENSHIP OR PLACE OF ORGANIZATION
United States | |||||
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH | 5 | SOLE VOTING POWER
0 | ||
| 6 | SHARED VOTING POWER
2,546,925 (1) | |||
| 7 | SOLE DISPOSITIVE POWER
0 | |||
| 8 | SHARED DISPOSITIVE POWER
2,546,925 (1) |
| 9 | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
2,546,925 (1) | |||||
| 10 | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
☐ | |||||
| 11 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
3.5% (2) | |||||
| 12 | TYPE OF REPORTING PERSON
IN | |||||
| (1) | 2,123,347 of such shares are held of record by PVP VI, 282,962 of such shares are shares underlying a warrant issued to PVP VI and which is exercisable within 60 days of the filing of this Amendment, 124,080 of such shares are held of record by PVPFF VI and 16,536 of such shares are shares underlying a warrant issued to PVPFF VI and which is exercisable within 60 days of the filing of this Amendment. PVM VI, the general partner of each of PVP VI and PVPFF VI, may be deemed to have voting, investment and dispositive power with respect to these securities. David Barrett, Brian Chee, Jonathan A. Flint, Terrance G. McGuire, Amir Nashat, a member of the Issuer’s board of directors, and Bryce Youngren are the managing members of PVM VI and may each be deemed to share voting, investment and dispositive power with respect to these securities. |
| (2) | Based on 72,442,756 shares of the Issuer’s Common Stock, calculated as follows (i) 72,143,258 shares of the Issuer’s Common Stock outstanding as of November 2, 2023, as reported by the Issuer in the Form 10-Q plus (ii) 282,962 shares of the Issuer’s Common Stock are shares underlying a warrant issued to PVP VI and which is exercisable within 60 days of the filing of this Amendment plus (iii) 16,536 shares of the Issuer’s Common Stock are shares underlying a warrant issued to PVPFF VI and which is exercisable within 60 days of the filing of this Amendment. |
| CUSIP #80706P103 | Page 8 of 14 |
| 1 | NAME OF REPORTING PERSONS
Terrance G. McGuire | |||||
| 2 | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☐ (b) ☒
| |||||
| 3 | SEC USE ONLY
| |||||
| 4 | CITIZENSHIP OR PLACE OF ORGANIZATION
United States | |||||
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH | 5 | SOLE VOTING POWER
39,123 (1) | ||
| 6 | SHARED VOTING POWER
2,546,925 (2) | |||
| 7 | SOLE DISPOSITIVE POWER
39,123 (1) | |||
| 8 | SHARED DISPOSITIVE POWER
2,546,925 (2) |
| 9 | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
2,586,048 (1) (2) | |||||
| 10 | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
☐ | |||||
| 11 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
3.6% (3) | |||||
| 12 | TYPE OF REPORTING PERSON
IN | |||||
| (1) | 12,858 of such shares are held by Terrance G. McGuire directly and 26,265 of such shares are held by the McGuire Family 2008 GST Non-Exempt Irrevocable Trust. |
| (2) | 2,123,347 of such shares are held of record by PVP VI, 282,962 of such shares are shares underlying a warrant issued to PVP VI and which is exercisable within 60 days of the filing of this Amendment, 124,080 of such shares are held of record by PVPFF VI and 16,536 of such shares are shares underlying a warrant issued to PVPFF VI and which is exercisable within 60 days of the filing of this Amendment. PVM VI, the general partner of each of PVP VI and PVPFF VI, may be deemed to have voting, investment and dispositive power with respect to these securities. David Barrett, Brian Chee, Jonathan A. Flint, Terrance G. McGuire, Amir Nashat, a member of the Issuer’s board of directors, and Bryce Youngren are the managing members of PVM VI and may each be deemed to share voting, investment and dispositive power with respect to these securities. |
| (3) | Based on 72,442,756 shares of the Issuer’s Common Stock, calculated as follows (i) 72,143,258 shares of the Issuer’s Common Stock outstanding as of November 2, 2023, as reported by the Issuer in the Form 10-Q plus (ii) 282,962 shares of the Issuer’s Common Stock are shares underlying a warrant issued to PVP VI and which is exercisable within 60 days of the filing of this Amendment plus (iii) 16,536 shares of the Issuer’s Common Stock are shares underlying a warrant issued to PVPFF VI and which is exercisable within 60 days of the filing of this Amendment. |
| CUSIP #80706P103 | Page 9 of 14 |
| 1 | NAME OF REPORTING PERSONS
Amir Nashat | |||||
| 2 | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☐ (b) ☒
| |||||
| 3 | SEC USE ONLY
| |||||
| 4 | CITIZENSHIP OR PLACE OF ORGANIZATION
United States | |||||
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH | 5 | SOLE VOTING POWER
104,780 (1) | ||
| 6 | SHARED VOTING POWER
2,546,925 (2) | |||
| 7 | SOLE DISPOSITIVE POWER
104,780 (1) | |||
| 8 | SHARED DISPOSITIVE POWER
2,546,925 (2) |
| 9 | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
2,651,705 (1) (2) | |||||
| 10 | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
☐ | |||||
| 11 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
3.7% (3) | |||||
| 12 | TYPE OF REPORTING PERSON
IN | |||||
| (1) | Consists of (i) 25,506 shares held of record directly by Amir Nashat and (ii) 79,274 shares subject to stock option awards that have been granted to Amir Nashat in his capacity as a director of the Issuer and that are exercisable as of or within 60 days of the filing of this Amendment. Excludes 36,000 shares subject to stock option awards that have been granted to Amir Nashat in his capacity as a director of the Issuer and that are not exercisable as of or within 60 days of the filing of this Amendment. |
| (2) | 2,123,347 of such shares are held of record by PVP VI, 282,962 of such shares are shares underlying a warrant issued to PVP VI and which is exercisable within 60 days of the filing of this Amendment, 124,080 of such shares are held of record by PVPFF VI and 16,536 of such shares are shares underlying a warrant issued to PVPFF VI and which is exercisable within 60 days of the filing of this Amendment. PVM VI, the general partner of each of PVP VI and PVPFF VI, may be deemed to have voting, investment and dispositive power with respect to these securities. David Barrett, Brian Chee, Jonathan A. Flint, Terrance G. McGuire, Amir Nashat, a member of the Issuer’s board of directors, and Bryce Youngren are the managing members of PVM VI and may each be deemed to share voting, investment and dispositive power with respect to these securities. |
| (3) | Based on 72,522,030 shares of the Issuer’s Common Stock, calculated as follows: (i) 72,143,258 shares of the Issuer’s Common Stock outstanding as of November 2, 2023, as reported by the Issuer in the Form 10-Q plus (ii) 79,274 shares of the Issuer’s Common Stock subject to stock option awards that have been granted to Amir Nashat in his capacity as a director of the Issuer and that are exercisable as of or within 60 days of the filing of this Amendment plus (iii) 282,962 shares of the Issuer’s Common Stock are shares underlying a warrant issued to PVP VI and which is exercisable within 60 days of the filing of this Amendment plus (iv) 16,536 shares of the Issuer’s Common Stock are shares underlying a warrant issued to PVPFF VI and which is exercisable within 60 days of the filing of this Amendment. |
| CUSIP #80706P103 | Page 10 of 14 |
| 1 | NAME OF REPORTING PERSONS
Bryce Youngren | |||||
| 2 | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☐ (b) ☒
| |||||
| 3 | SEC USE ONLY
| |||||
| 4 | CITIZENSHIP OR PLACE OF ORGANIZATION
United States | |||||
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH | 5 | SOLE VOTING POWER
27,299 (1) | ||
| 6 | SHARED VOTING POWER
2,546,925 (2) | |||
| 7 | SOLE DISPOSITIVE POWER
27,299 (1) | |||
| 8 | SHARED DISPOSITIVE POWER
2,546,925 (2) |
| 9 | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
2,574,224 (1) (2) | |||||
| 10 | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
☐ | |||||
| 11 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
3.6% (3) | |||||
| 12 | TYPE OF REPORTING PERSON
IN | |||||
| (1) | All of such shares are held by Bryce Youngren directly. |
| (2) | 2,123,347 of such shares are held of record by PVP VI, 282,962 of such shares are shares underlying a warrant issued to PVP VI and which is exercisable within 60 days of the filing of this Amendment, 124,080 of such shares are held of record by PVPFF VI and 16,536 of such shares are shares underlying a warrant issued to PVPFF VI and which is exercisable within 60 days of the filing of this Amendment. PVM VI, the general partner of each of PVP VI and PVPFF VI, may be deemed to have voting, investment and dispositive power with respect to these securities. David Barrett, Brian Chee, Jonathan A. Flint, Terrance G. McGuire, Amir Nashat, a member of the Issuer’s board of directors, and Bryce Youngren are the managing members of PVM VI and may each be deemed to share voting, investment and dispositive power with respect to these securities. |
| (3) | Based on 72,442,756 shares of the Issuer’s Common Stock, calculated as follows (i) 72,143,258 shares of the Issuer’s Common Stock outstanding as of November 2, 2023, as reported by the Issuer in the Form 10-Q plus (ii) 282,962 shares of the Issuer’s Common Stock are shares underlying a warrant issued to PVP VI and which is exercisable within 60 days of the filing of this Amendment plus (iii) 16,536 shares of the Issuer’s Common Stock are shares underlying a warrant issued to PVPFF VI and which is exercisable within 60 days of the filing of this Amendment. |
| CUSIP #80706P103 | SCHEDULE 13G | Page 11 of 14 |
Introductory Note: This Amendment No. 3 (the “Amendment”) amends and supplements the Schedule 13G originally filed by the Reporting Persons with the Commission on February 14, 2019, Amendment No. 1 filed with the Commission on February 11, 2022 and Amendment No. 2 filed with the Commission on February 7, 2023 (collectively, the “Original Schedule 13G”). Only those items that are hereby reported are amended; all other items reported in the Original Schedule 13G remain unchanged. Information given in response to each item shall be deemed incorporated by reference in all other items, as applicable. Capitalized terms not defined in this Amendment have the meanings ascribed to them in the Original Schedule 13G.
ITEM 1(B). ADDRESS OF ISSUER’S PRINCIPAL EXECUTIVE OFFICES
301 Binney Street, 3rd Floor
Cambridge, MA 02142
ITEM 2(B). ADDRESS OF PRINCIPAL OFFICE
The address for each of the Reporting Persons except for Chee is:
c/o Polaris Partners
One Marina Park Drive, 8th Floor
Boston, MA 02210
The address for Chee is:
c/o Polaris Partners
1 Letterman Drive
Building C, Suite 3600
San Francisco, CA 94129
ITEM 4. OWNERSHIP
The approximate percentages of Common Stock reported as beneficially owned by the Reporting Persons are based upon 72,143,258 shares of the Issuer’s Common Stock outstanding as of November 2, 2023, as reported on the Form 10-Q.
The following information with respect to the ownership of the common stock of the Issuer by the Reporting Persons filing this Statement is provided as of December 31, 2023:
(a) Amount beneficially owned:
| See | Row 9 of cover page for each Reporting Person. |
(b) Percent of Class:
| See | Row 11 of cover page for each Reporting Person. |
(c) Number of shares as to which such person has:
(i) Sole power to vote or to direct the vote:
See Row 5 of cover page for each Reporting Person.
(ii) Shared power to vote or to direct the vote:
See Row 6 of cover page for each Reporting Person.
(iii) Sole power to dispose or to direct the disposition of:
See Row 7 of cover page for each Reporting Person.
(iv) Shared power to dispose or to direct the disposition of:
See Row 8 of cover page for each Reporting Person.
| * | Except to the extent of their pecuniary interest therein, each Reporting Person disclaims beneficial ownership of such shares of Common Stock, except for the shares, if any, such Reporting Person holds of record. |
ITEM 5. OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS
☒
| CUSIP #80706P103 | Page 13 of 14 |
SIGNATURES
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.
Date: February 9, 2024
| POLARIS VENTURE PARTNERS VI, L.P. | ||
| By: | Polaris Venture Management Co. VI, L.L.C. | |
| By: | * | |
| Authorized Signatory | ||
| POLARIS VENTURE PARTNERS FOUNDERS’ FUND VI, L.P. | ||
| By: | Polaris Venture Management Co. VI, L.L.C. | |
| By: | * | |
| Authorized Signatory | ||
| POLARIS VENTURE MANAGEMENT CO. VI, L.L.C. | ||
| By: | * | |
| Authorized Signatory | ||
| JONATHAN A. FLINT | ||
| By: | * | |
| Jonathan A. Flint | ||
| TERRANCE G. MCGUIRE | ||
| By: | * | |
| Terrance G. McGuire | ||
| BRYCE YOUNGREN | ||
| By: | * | |
| Bryce Youngren | ||
| DAVID BARRETT | ||
| By: | * | |
| David Barrett | ||
| BRIAN CHEE | ||
| By: | * | |
| Brian Chee | ||
| CUSIP #80706P103 | Page 14 of 14 |
| AMIR NASHAT | ||
| By: | * | |
| Amir Nashat | ||
| *By: | /s/ Lauren Crockett | |
| Name: | Lauren Crockett | |
| Title: | Attorney-in-Fact | |
[This Schedule 13G was executed pursuant to a Power of Attorney. Note that copies of the applicable Powers of Attorney are already on file with the appropriate agencies.]
