# EDGAR Filing Document

**Accession Number:** 0001451727
**File Stem:** 0001104659-23-021428
**Filing Date:** 2023-2
**Character Count:** 54402
**Document Hash:** 90b3a912f10f536cc78217d0578b3f81
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-23-021428.hdr.sgml**: 20230214

**ACCESSION NUMBER**: 0001104659-23-021428

**CONFORMED SUBMISSION TYPE**: SC 13G/A

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20230214

**DATE AS OF CHANGE**: 20230214

**GROUP MEMBERS**: ACCEL GROWTH FUND ASSOCIATES L.L.C.

**GROUP MEMBERS**: ACCEL GROWTH FUND INVESTORS 2010 L.L.C.

**GROUP MEMBERS**: ACCEL GROWTH FUND STRATEGIC PARTNERS L.P.

**GROUP MEMBERS**: ACCEL LEADERS 3 ASSOCIATES L.P.

**GROUP MEMBERS**: ACCEL LEADERS 3 ENTREPRENEURS L.P.

**GROUP MEMBERS**: ACCEL LEADERS 3 GP ASSOCIATES L.L.C.

**GROUP MEMBERS**: ACCEL LEADERS 3 INVESTORS (2020) L.P.

**GROUP MEMBERS**: ACCEL LEADERS 3 L.P.

**GROUP MEMBERS**: ANDREW G. BRACCIA

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Squarespace, Inc.
- **CENTRAL INDEX KEY:** 0001496963
- **STANDARD INDUSTRIAL CLASSIFICATION:** SERVICES-PREPACKAGED SOFTWARE [7372]
- **IRS NUMBER:** 200375811
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SC 13G/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-93410
- **FILM NUMBER:** 23628127

**BUSINESS ADDRESS:**
- **STREET 1:** 225 VARICK STREET, 12TH FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10014
- **BUSINESS PHONE:** (646) 580-3456

**MAIL ADDRESS:**
- **STREET 1:** 225 VARICK STREET, 12TH FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10014
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Accel Growth Fund L.P.
- **CENTRAL INDEX KEY:** 0001451727
- **IRS NUMBER:** 263856873
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SC 13G/A

**BUSINESS ADDRESS:**
- **STREET 1:** 428 UNIVERSITY AVENUE
- **CITY:** PALO ALTO
- **STATE:** CA
- **ZIP:** 94301
- **BUSINESS PHONE:** 650.614.4800

**MAIL ADDRESS:**
- **STREET 1:** 428 UNIVERSITY AVENUE
- **CITY:** PALO ALTO
- **STATE:** CA
- **ZIP:** 94301

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Schedule 13G<br> (Rule 13d-102)

INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULES 13d-1 (b), (c) AND (d) <br> AND AMENDMENTS THERETO FILED PURSUANT TO 13d-2 (b)

(Amendment No. 1)\*

Squarespace, Inc.

(Name of Issuer)

Class A Common Stock, $0.0001 par value per share

(Title of Class of Securities)

85225A107

(CUSIP Number)

December 31, 2022

(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) <br> ◻ Rule 13d-1(c) <br> ⌧ 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)

Page 1 of 15 Pages

Exhibit Index Contained on Page 14

CUSIP NO. 85225A107 13 G Page 2 of 15

---

| | | | | |
|:---|:---|:---|:---|:---|
| 1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NAME OF REPORTING<br> SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON<br> Accel Growth Fund L.P. ("AGF") | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NAME OF REPORTING<br> SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON<br> Accel Growth Fund L.P. ("AGF") | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NAME OF REPORTING<br> SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON<br> Accel Growth Fund L.P. ("AGF") | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NAME OF REPORTING<br> SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON<br> Accel Growth Fund L.P. ("AGF") |
| 2 | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP\*<br>(a) ◻ (b) ⌧ | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP\*<br>(a) ◻ (b) ⌧ | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP\*<br>(a) ◻ (b) ⌧ | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP\*<br>(a) ◻ (b) ⌧ |
| 3 | SEC USE ONLY | SEC USE ONLY | SEC USE ONLY | SEC USE ONLY |
| 4 | CITIZENSHIP OR PLACE OF ORGANIZATION<br> Delaware | CITIZENSHIP OR PLACE OF ORGANIZATION<br> Delaware | CITIZENSHIP OR PLACE OF ORGANIZATION<br> Delaware | CITIZENSHIP OR PLACE OF ORGANIZATION<br> Delaware |
| NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | 5 | SOLE VOTING POWER<br> 12,808,246 shares, all of which are owned by AGF. Accel Growth Fund Associates L.L.C. ("AGFA"), the general partner of AGF, may be deemed to have sole power to vote these shares. Andrew G. Braccia ("AGB"), a director of the issuer and a managing member of AGFA, may be deemed to have shared power to vote these shares. | SOLE VOTING POWER<br> 12,808,246 shares, all of which are owned by AGF. Accel Growth Fund Associates L.L.C. ("AGFA"), the general partner of AGF, may be deemed to have sole power to vote these shares. Andrew G. Braccia ("AGB"), a director of the issuer and a managing member of AGFA, may be deemed to have shared power to vote these shares. |
| NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | 6 | SHARED VOTING POWER<br> See response to row 5. | SHARED VOTING POWER<br> See response to row 5. |
| NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | 7 | SOLE DISPOSITIVE POWER<br> 12,808,246 shares, all of which are owned by AGF. AGFA, the general partner of AGF, may be deemed to have sole power to dispose of these shares. AGB, a director of the issuer and a managing member of AGFA, may be deemed to have shared power to dispose of these shares. | SOLE DISPOSITIVE POWER<br> 12,808,246 shares, all of which are owned by AGF. AGFA, the general partner of AGF, may be deemed to have sole power to dispose of these shares. AGB, a director of the issuer and a managing member of AGFA, may be deemed to have shared power to dispose of these shares. |
| | | 8 | SHARED DISPOSITIVE POWER<br> See response to row 7. | SHARED DISPOSITIVE POWER<br> See response to row 7. |
| 9 | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON | 12,808,246 |
| 10 | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES\* | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES\* | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES\* | ◻ |
| 11 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 | 14.4%(1) |
| 12 | TYPE OF REPORTING PERSON\* | TYPE OF REPORTING PERSON\* | TYPE OF REPORTING PERSON\* | PN |

---

(1) Based on 88,984,890 shares of Class A Common Stock outstanding as of September 30, 2022, as reported in the issuer's Quarterly Report on Form 10-Q for the quarter ended September 30, 2022, filed with the Securities and Exchange Commission on November 8, 2022 (the "Form 10-Q").

CUSIP NO. 85225A107 13 G Page 3 of 15

---

| | | | | |
|:---|:---|:---|:---|:---|
| 1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NAME OF REPORTING<br> SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON<br> Accel Growth Fund Strategic Partners L.P. ("AGFSP") | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NAME OF REPORTING<br> SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON<br> Accel Growth Fund Strategic Partners L.P. ("AGFSP") | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NAME OF REPORTING<br> SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON<br> Accel Growth Fund Strategic Partners L.P. ("AGFSP") | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NAME OF REPORTING<br> SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON<br> Accel Growth Fund Strategic Partners L.P. ("AGFSP") |
| 2 | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP\* | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP\* | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP\* | <br>(a) ◻ (b) ⌧ |
| 3 | SEC USE ONLY | SEC USE ONLY | SEC USE ONLY | SEC USE ONLY |
| 4 | CITIZENSHIP OR PLACE OF ORGANIZATION<br> Delaware | CITIZENSHIP OR PLACE OF ORGANIZATION<br> Delaware | CITIZENSHIP OR PLACE OF ORGANIZATION<br> Delaware | CITIZENSHIP OR PLACE OF ORGANIZATION<br> Delaware |
| NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | 5 | SOLE VOTING POWER<br> 250,729 shares, all of which are owned by AGFSP. AGFA, the general partner of AGFSP, may be deemed to have sole power to vote these shares. AGB, a director of the issuer and a managing member of AGFA, may be deemed to have shared power to vote these shares. | SOLE VOTING POWER<br> 250,729 shares, all of which are owned by AGFSP. AGFA, the general partner of AGFSP, may be deemed to have sole power to vote these shares. AGB, a director of the issuer and a managing member of AGFA, may be deemed to have shared power to vote these shares. |
| NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | 6 | SHARED VOTING POWER<br> See response to row 5. | SHARED VOTING POWER<br> See response to row 5. |
| NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | 7 | SOLE DISPOSITIVE POWER<br> 250,729 shares, all of which are owned by AGFSP. AGFA, the general partner of AGFSP, may be deemed to have sole power to dispose of these shares. AGB, a director of the issuer and a managing member of AGFA, may be deemed to have shared power to dispose of these shares. | SOLE DISPOSITIVE POWER<br> 250,729 shares, all of which are owned by AGFSP. AGFA, the general partner of AGFSP, may be deemed to have sole power to dispose of these shares. AGB, a director of the issuer and a managing member of AGFA, may be deemed to have shared power to dispose of these shares. |
| | | 8 | SHARED DISPOSITIVE POWER<br> See response to row 7. | SHARED DISPOSITIVE POWER<br> See response to row 7. |
| 9 | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON | 250,729 |
| 10 | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES\* | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES\* | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES\* | ◻ |
| 11 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 | 0.3%(1) |
| 12 | TYPE OF REPORTING PERSON\* | TYPE OF REPORTING PERSON\* | TYPE OF REPORTING PERSON\* | PN |

---

(1) Based on 88,984,890 shares of Class A Common Stock outstanding as of September 30, 2022, as reported in the issuer's Quarterly Report on Form 10-Q for the quarter ended September 30, 2022.

CUSIP NO. 85225A107 13 G Page 4 of 15

---

| | | | | |
|:---|:---|:---|:---|:---|
| 1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NAME OF REPORTING<br> SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON<br> Accel Growth Fund Associates L.L.C. ("AGFA") | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NAME OF REPORTING<br> SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON<br> Accel Growth Fund Associates L.L.C. ("AGFA") | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NAME OF REPORTING<br> SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON<br> Accel Growth Fund Associates L.L.C. ("AGFA") | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NAME OF REPORTING<br> SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON<br> Accel Growth Fund Associates L.L.C. ("AGFA") |
| 2 | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP\*<br> (a) ◻ (b) ⌧ | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP\*<br> (a) ◻ (b) ⌧ | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP\*<br> (a) ◻ (b) ⌧ | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP\*<br> (a) ◻ (b) ⌧ |
| 3 | SEC USE ONLY | SEC USE ONLY | SEC USE ONLY | SEC USE ONLY |
| 4 | CITIZENSHIP OR PLACE OF ORGANIZATION<br> Delaware | CITIZENSHIP OR PLACE OF ORGANIZATION<br> Delaware | CITIZENSHIP OR PLACE OF ORGANIZATION<br> Delaware | CITIZENSHIP OR PLACE OF ORGANIZATION<br> Delaware |
| NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | 5 | SOLE VOTING POWER<br> 13,058,975 shares, of which 12,808,246 are directly owned by AGF and 250,729 are directly owned by AGFSP. AGFA, the general partner of AGF and AGFSP, may be deemed to have sole power to vote these shares. AGB, a director of the issuer and a managing member of AGFA, may be deemed to have shared power to vote these shares. | SOLE VOTING POWER<br> 13,058,975 shares, of which 12,808,246 are directly owned by AGF and 250,729 are directly owned by AGFSP. AGFA, the general partner of AGF and AGFSP, may be deemed to have sole power to vote these shares. AGB, a director of the issuer and a managing member of AGFA, may be deemed to have shared power to vote these shares. |
| NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | 6 | SHARED VOTING POWER<br> See response to row 5. | SHARED VOTING POWER<br> See response to row 5. |
| NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | 7 | SOLE DISPOSITIVE POWER<br> 13,058,975 shares, of which 12,808,246 are directly owned by AGF and 250,729 are directly owned by AGFSP. AGFA, the general partner of AGF and AGFSP, may be deemed to have sole power to dispose of these shares. AGB, a director of the issuer and a managing member of AGFA, may be deemed to have shared power to dispose of these shares. | SOLE DISPOSITIVE POWER<br> 13,058,975 shares, of which 12,808,246 are directly owned by AGF and 250,729 are directly owned by AGFSP. AGFA, the general partner of AGF and AGFSP, may be deemed to have sole power to dispose of these shares. AGB, a director of the issuer and a managing member of AGFA, may be deemed to have shared power to dispose of these shares. |
| | | 8 | SHARED DISPOSITIVE POWER<br> See response to row 7. | SHARED DISPOSITIVE POWER<br> See response to row 7. |
| 9 | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON | 13,058,975 |
| 10 | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES\* | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES\* | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES\* | ◻ |
| 11 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 | 14.7%(1) |
| 12 | TYPE OF REPORTING PERSON\* | TYPE OF REPORTING PERSON\* | TYPE OF REPORTING PERSON\* | OO |

---

(1) Based on 88,984,890 shares of Class A Common Stock outstanding as of September 30, 2022, as reported in the issuer's Quarterly Report on Form 10-Q for the quarter ended September 30, 2022.

CUSIP NO. 85225A107 13 G Page 5 of 15

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| | | | | |
|:---|:---|:---|:---|:---|
| 1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NAME OF REPORTING PERSONS<br> I.R.S. IDENTIFICATION NO. OF ABOVE PERSON<br> Accel Growth Fund Investors 2010 L.L.C. ("AGFI10") | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NAME OF REPORTING PERSONS<br> I.R.S. IDENTIFICATION NO. OF ABOVE PERSON<br> Accel Growth Fund Investors 2010 L.L.C. ("AGFI10") | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NAME OF REPORTING PERSONS<br> I.R.S. IDENTIFICATION NO. OF ABOVE PERSON<br> Accel Growth Fund Investors 2010 L.L.C. ("AGFI10") | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NAME OF REPORTING PERSONS<br> I.R.S. IDENTIFICATION NO. OF ABOVE PERSON<br> Accel Growth Fund Investors 2010 L.L.C. ("AGFI10") |
| 2 | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP<br> (a) ◻ (b) ⌧ | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP<br> (a) ◻ (b) ⌧ | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP<br> (a) ◻ (b) ⌧ | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP<br> (a) ◻ (b) ⌧ |
| 3 | SEC USE ONLY | SEC USE ONLY | SEC USE ONLY | SEC USE ONLY |
| 4 | CITIZENSHIP OR PLACE OF ORGANIZATION<br> Delaware | CITIZENSHIP OR PLACE OF ORGANIZATION<br> Delaware | CITIZENSHIP OR PLACE OF ORGANIZATION<br> Delaware | CITIZENSHIP OR PLACE OF ORGANIZATION<br> Delaware |
| NUMBER OF<br> SHARES<br> BENEFICIALLY<br> OWNED BY EACH<br> REPORTING<br> PERSON<br> WITH | NUMBER OF<br> SHARES<br> BENEFICIALLY<br> OWNED BY EACH<br> REPORTING<br> PERSON<br> WITH | 5 | SOLE VOTING POWER<br> 870,600 shares, all of which are owned by AGFI10. AGB, a director of the issuer and a managing member of AGFI10, may be deemed to have shared power to vote these shares. | SOLE VOTING POWER<br> 870,600 shares, all of which are owned by AGFI10. AGB, a director of the issuer and a managing member of AGFI10, may be deemed to have shared power to vote these shares. |
| NUMBER OF<br> SHARES<br> BENEFICIALLY<br> OWNED BY EACH<br> REPORTING<br> PERSON<br> WITH | NUMBER OF<br> SHARES<br> BENEFICIALLY<br> OWNED BY EACH<br> REPORTING<br> PERSON<br> WITH | 6 | SHARED VOTING POWER<br> See response to row 5. | SHARED VOTING POWER<br> See response to row 5. |
| NUMBER OF<br> SHARES<br> BENEFICIALLY<br> OWNED BY EACH<br> REPORTING<br> PERSON<br> WITH | NUMBER OF<br> SHARES<br> BENEFICIALLY<br> OWNED BY EACH<br> REPORTING<br> PERSON<br> WITH | 7 | SOLE DISPOSITIVE POWER<br> 870,600 shares, all of which are owned by AGFI10. AGB, a director of the issuer and a managing member of AGFI10, may be deemed to have shared power to dispose of these shares. | SOLE DISPOSITIVE POWER<br> 870,600 shares, all of which are owned by AGFI10. AGB, a director of the issuer and a managing member of AGFI10, may be deemed to have shared power to dispose of these shares. |
| | | 8 | SHARED DISPOSITIVE POWER<br> See response to row 7. | SHARED DISPOSITIVE POWER<br> See response to row 7. |
| 9 | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON | 870,600 |
| 10 | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES\* | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES\* | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES\* | ◻ |
| 11 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 | 1.0%(1) |
| 12 | TYPE OF REPORTING PERSON\* | TYPE OF REPORTING PERSON\* | TYPE OF REPORTING PERSON\* | OO |

---

(1) Based on 88,984,890 shares of Class A Common Stock outstanding as of September 30, 2022, as reported in the issuer's Quarterly Report on Form 10-Q for the quarter ended September 30, 2022.

CUSIP NO. 85225A107 13 G Page 6 of 15

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| | | | | |
|:---|:---|:---|:---|:---|
| 1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NAME OF REPORTING<br> SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON<br> Accel Leaders 3 L.P. ("ALF3") | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NAME OF REPORTING<br> SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON<br> Accel Leaders 3 L.P. ("ALF3") | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NAME OF REPORTING<br> SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON<br> Accel Leaders 3 L.P. ("ALF3") | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NAME OF REPORTING<br> SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON<br> Accel Leaders 3 L.P. ("ALF3") |
| 2 | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP\*<br> (a) ◻ (b) ⌧ | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP\*<br> (a) ◻ (b) ⌧ | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP\*<br> (a) ◻ (b) ⌧ | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP\*<br> (a) ◻ (b) ⌧ |
| 3 | SEC USE ONLY | SEC USE ONLY | SEC USE ONLY | SEC USE ONLY |
| 4 | CITIZENSHIP OR PLACE OF ORGANIZATION<br> Delaware | CITIZENSHIP OR PLACE OF ORGANIZATION<br> Delaware | CITIZENSHIP OR PLACE OF ORGANIZATION<br> Delaware | CITIZENSHIP OR PLACE OF ORGANIZATION<br> Delaware |
| NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | 5 | SOLE VOTING POWER<br> 530,953 shares, all of which are owned by ALF3. Accel Leaders 3 Associates L.P. ("ALF3A LP"), the general partner of ALF3, may be deemed to have sole power to vote these shares. Accel Leaders 3 GP Associates L.L.C. ("AL3A"), the general partner of ALF3A LP, may be deemed to have sole power to vote these shares. AGB, a director of the issuer and a managing member of AL3A, may be deemed to have shared power to vote these shares. | SOLE VOTING POWER<br> 530,953 shares, all of which are owned by ALF3. Accel Leaders 3 Associates L.P. ("ALF3A LP"), the general partner of ALF3, may be deemed to have sole power to vote these shares. Accel Leaders 3 GP Associates L.L.C. ("AL3A"), the general partner of ALF3A LP, may be deemed to have sole power to vote these shares. AGB, a director of the issuer and a managing member of AL3A, may be deemed to have shared power to vote these shares. |
| NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | 6 | SHARED VOTING POWER<br> See response to row 5. | SHARED VOTING POWER<br> See response to row 5. |
| NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | 7 | SOLE DISPOSITIVE POWER<br> 530,953 shares, all of which are owned by ALF3. ALF3A LP, the general partner of ALF3, may be deemed to have sole power to dispose of these shares. AL3A, the general partner of ALF3A LP, may be deemed to have sole power to dispose of these shares. AGB, a director of the issuer and a managing member of AL3A, may be deemed to have shared power to dispose of these shares. | SOLE DISPOSITIVE POWER<br> 530,953 shares, all of which are owned by ALF3. ALF3A LP, the general partner of ALF3, may be deemed to have sole power to dispose of these shares. AL3A, the general partner of ALF3A LP, may be deemed to have sole power to dispose of these shares. AGB, a director of the issuer and a managing member of AL3A, may be deemed to have shared power to dispose of these shares. |
| | | 8 | SHARED DISPOSITIVE POWER<br> See response to row 7. | SHARED DISPOSITIVE POWER<br> See response to row 7. |
| 9 | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON | 530,953 |
| 10 | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES\* | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES\* | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES\* | ◻ |
| 11 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 | 0.6%(1) |
| 12 | TYPE OF REPORTING PERSON\* | TYPE OF REPORTING PERSON\* | TYPE OF REPORTING PERSON\* | PN |

---

(1) Based on 88,984,890 shares of Class A Common Stock outstanding as of September 30, 2022, as reported in the issuer's Quarterly Report on Form 10-Q for the quarter ended September 30, 2022.

CUSIP NO. 85225A107 13 G Page 7 of 15

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| | | | | |
|:---|:---|:---|:---|:---|
| 1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NAME OF REPORTING<br> SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON<br> Accel Leaders 3 Entrepreneurs L.P. ("ALF3E") | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NAME OF REPORTING<br> SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON<br> Accel Leaders 3 Entrepreneurs L.P. ("ALF3E") | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NAME OF REPORTING<br> SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON<br> Accel Leaders 3 Entrepreneurs L.P. ("ALF3E") | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NAME OF REPORTING<br> SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON<br> Accel Leaders 3 Entrepreneurs L.P. ("ALF3E") |
| 2 | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP\*<br> (a) ◻ (b) ⌧ | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP\*<br> (a) ◻ (b) ⌧ | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP\*<br> (a) ◻ (b) ⌧ | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP\*<br> (a) ◻ (b) ⌧ |
| 3 | SEC USE ONLY | SEC USE ONLY | SEC USE ONLY | SEC USE ONLY |
| 4 | CITIZENSHIP OR PLACE OF ORGANIZATION<br> Delaware | CITIZENSHIP OR PLACE OF ORGANIZATION<br> Delaware | CITIZENSHIP OR PLACE OF ORGANIZATION<br> Delaware | CITIZENSHIP OR PLACE OF ORGANIZATION<br> Delaware |
| NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | 5 | SOLE VOTING POWER<br> 21,982 shares, all of which are owned by ALF3E. ALF3A LP, the general partner of ALF3E, may be deemed to have sole power to vote these shares. AL3A, the general partner of ALF3A LP, may be deemed to have sole power to vote these shares. AGB, a director of the issuer and a managing member of AL3A, may be deemed to have shared power to vote these shares. | SOLE VOTING POWER<br> 21,982 shares, all of which are owned by ALF3E. ALF3A LP, the general partner of ALF3E, may be deemed to have sole power to vote these shares. AL3A, the general partner of ALF3A LP, may be deemed to have sole power to vote these shares. AGB, a director of the issuer and a managing member of AL3A, may be deemed to have shared power to vote these shares. |
| NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | 6 | SHARED VOTING POWER<br> See response to row 5. | SHARED VOTING POWER<br> See response to row 5. |
| NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | 7 | SOLE DISPOSITIVE POWER<br> 21,982 shares, all of which are owned by ALF3E. ALF3A LP, the general partner of ALF3E, may be deemed to have sole power to dispose of these shares. AL3A, the general partner of ALF3A LP, may be deemed to have sole power to dispose of these shares. AGB, a director of the issuer and a managing member of AL3A, may be deemed to have shared power to dispose of these shares. | SOLE DISPOSITIVE POWER<br> 21,982 shares, all of which are owned by ALF3E. ALF3A LP, the general partner of ALF3E, may be deemed to have sole power to dispose of these shares. AL3A, the general partner of ALF3A LP, may be deemed to have sole power to dispose of these shares. AGB, a director of the issuer and a managing member of AL3A, may be deemed to have shared power to dispose of these shares. |
| | | 8 | SHARED DISPOSITIVE POWER<br> See response to row 7. | SHARED DISPOSITIVE POWER<br> See response to row 7. |
| 9 | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON | 21,982 |
| 10 | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES\* | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES\* | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES\* | ◻ |
| 11 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 | 0.0%(1) |
| 12 | TYPE OF REPORTING PERSON\* | TYPE OF REPORTING PERSON\* | TYPE OF REPORTING PERSON\* | PN |

---

(1) Based on 88,984,890 shares of Class A Common Stock outstanding as of September 30, 2022, as reported in the issuer's Quarterly Report on Form 10-Q for the quarter ended September 30, 2022.

CUSIP NO. 85225A107 13 G Page 8 of 15

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| | | | | |
|:---|:---|:---|:---|:---|
| 1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NAME OF REPORTING<br> SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON<br> Accel Leaders 3 Associates L.P. ("ALF3A LP") | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NAME OF REPORTING<br> SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON<br> Accel Leaders 3 Associates L.P. ("ALF3A LP") | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NAME OF REPORTING<br> SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON<br> Accel Leaders 3 Associates L.P. ("ALF3A LP") | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NAME OF REPORTING<br> SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON<br> Accel Leaders 3 Associates L.P. ("ALF3A LP") |
| 2 | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP\*<br> (a) ◻ (b) ⌧ | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP\*<br> (a) ◻ (b) ⌧ | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP\*<br> (a) ◻ (b) ⌧ | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP\*<br> (a) ◻ (b) ⌧ |
| 3 | SEC USE ONLY | SEC USE ONLY | SEC USE ONLY | SEC USE ONLY |
| 4 | CITIZENSHIP OR PLACE OF ORGANIZATION<br> Delaware | CITIZENSHIP OR PLACE OF ORGANIZATION<br> Delaware | CITIZENSHIP OR PLACE OF ORGANIZATION<br> Delaware | CITIZENSHIP OR PLACE OF ORGANIZATION<br> Delaware |
| NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | 5 | SOLE VOTING POWER<br> 552,935 shares, of which 530,953 are owned by ALF3, and 21,982 are owned by ALF3E. ALF3A LP, the general partner of ALF3 and ALF3E, may be deemed to have sole power to vote these shares. AL3A, the general partner of ALF3A LP, may be deemed to have sole power to vote these shares. AGB, a director of the issuer and a managing member of AL3A, may be deemed to have shared power to vote these shares. | SOLE VOTING POWER<br> 552,935 shares, of which 530,953 are owned by ALF3, and 21,982 are owned by ALF3E. ALF3A LP, the general partner of ALF3 and ALF3E, may be deemed to have sole power to vote these shares. AL3A, the general partner of ALF3A LP, may be deemed to have sole power to vote these shares. AGB, a director of the issuer and a managing member of AL3A, may be deemed to have shared power to vote these shares. |
| NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | 6 | SHARED VOTING POWER<br> See response to row 5. | SHARED VOTING POWER<br> See response to row 5. |
| NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | 7 | SOLE DISPOSITIVE POWER<br> 552,935 shares, of which 530,953 are owned by ALF3, and 21,982 are owned by ALF3E. ALF3A LP, the general partner of ALF3 and ALF3E, may be deemed to have sole power to dispose of these shares. AL3A, the general partner of ALF3A LP, may be deemed to have sole power to dispose of these shares. AGB, a director of the issuer and a managing member of AL3A, may be deemed to have shared power to dispose of these shares. | SOLE DISPOSITIVE POWER<br> 552,935 shares, of which 530,953 are owned by ALF3, and 21,982 are owned by ALF3E. ALF3A LP, the general partner of ALF3 and ALF3E, may be deemed to have sole power to dispose of these shares. AL3A, the general partner of ALF3A LP, may be deemed to have sole power to dispose of these shares. AGB, a director of the issuer and a managing member of AL3A, may be deemed to have shared power to dispose of these shares. |
| | | 8 | SHARED DISPOSITIVE POWER<br> See response to row 7. | SHARED DISPOSITIVE POWER<br> See response to row 7. |
| 9 | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON | 552,935 |
| 10 | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES\* | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES\* | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES\* | ◻ |
| 11 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 | 0.6%(1) |
| 12 | TYPE OF REPORTING PERSON\* | TYPE OF REPORTING PERSON\* | TYPE OF REPORTING PERSON\* | PN |

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(1) Based on 88,984,890 shares of Class A Common Stock outstanding as of September 30, 2022, as reported in the issuer's Quarterly Report on Form 10-Q for the quarter ended September 30, 2022.

CUSIP NO. 85225A107 13 G Page 9 of 15

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| | | | | |
|:---|:---|:---|:---|:---|
| 1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NAME OF REPORTING<br> SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON<br> Accel Leaders 3 Investors (2020) L.P. ("ALFI20") | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NAME OF REPORTING<br> SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON<br> Accel Leaders 3 Investors (2020) L.P. ("ALFI20") | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NAME OF REPORTING<br> SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON<br> Accel Leaders 3 Investors (2020) L.P. ("ALFI20") | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NAME OF REPORTING<br> SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON<br> Accel Leaders 3 Investors (2020) L.P. ("ALFI20") |
| 2 | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP\*<br> (a) ◻ (b) ⌧ | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP\*<br> (a) ◻ (b) ⌧ | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP\*<br> (a) ◻ (b) ⌧ | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP\*<br> (a) ◻ (b) ⌧ |
| 3 | SEC USE ONLY | SEC USE ONLY | SEC USE ONLY | SEC USE ONLY |
| 4 | CITIZENSHIP OR PLACE OF ORGANIZATION<br> Delaware | CITIZENSHIP OR PLACE OF ORGANIZATION<br> Delaware | CITIZENSHIP OR PLACE OF ORGANIZATION<br> Delaware | CITIZENSHIP OR PLACE OF ORGANIZATION<br> Delaware |
| NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | 5 | SOLE VOTING POWER<br> 31,686 shares, all of which are owned by ALFI20. AL3A, the general partner of ALFI20, may be deemed to have sole power to vote these shares. AGB, a director of the issuer and a managing member of AL3A, may be deemed to have shared power to vote these shares. | SOLE VOTING POWER<br> 31,686 shares, all of which are owned by ALFI20. AL3A, the general partner of ALFI20, may be deemed to have sole power to vote these shares. AGB, a director of the issuer and a managing member of AL3A, may be deemed to have shared power to vote these shares. |
| NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | 6 | SHARED VOTING POWER<br> See response to row 5. | SHARED VOTING POWER<br> See response to row 5. |
| NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | 7 | SOLE DISPOSITIVE POWER<br> 31,686 shares, all of which are owned by ALFI20. AL3A, the general partner of ALFI20, may be deemed to have sole power to dispose of these shares. AGB, a director of the issuer and a managing member of AL3A, may be deemed to have shared power to dispose of these shares. | SOLE DISPOSITIVE POWER<br> 31,686 shares, all of which are owned by ALFI20. AL3A, the general partner of ALFI20, may be deemed to have sole power to dispose of these shares. AGB, a director of the issuer and a managing member of AL3A, may be deemed to have shared power to dispose of these shares. |
| | | 8 | SHARED DISPOSITIVE POWER<br> See response to row 7. | SHARED DISPOSITIVE POWER<br> See response to row 7. |
| 9 | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON | 31,686 |
| 10 | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES\* | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES\* | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES\* | ◻ |
| 11 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 | 0.0%(1) |
| 12 | TYPE OF REPORTING PERSON\* | TYPE OF REPORTING PERSON\* | TYPE OF REPORTING PERSON\* | PN |

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(1) Based on 88,984,890 shares of Class A Common Stock outstanding as of September 30, 2022, as reported in the issuer's Quarterly Report on Form 10-Q for the quarter ended September 30, 2022.

CUSIP NO. 85225A107 13 G Page 10 of 15

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| | | | | |
|:---|:---|:---|:---|:---|
| 1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NAME OF REPORTING<br> SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON<br> Accel Leaders 3 GP Associates L.L.C. ("AL3A") | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NAME OF REPORTING<br> SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON<br> Accel Leaders 3 GP Associates L.L.C. ("AL3A") | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NAME OF REPORTING<br> SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON<br> Accel Leaders 3 GP Associates L.L.C. ("AL3A") | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NAME OF REPORTING<br> SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON<br> Accel Leaders 3 GP Associates L.L.C. ("AL3A") |
| 2 | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP\*<br> (a) ◻ (b) ⌧ | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP\*<br> (a) ◻ (b) ⌧ | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP\*<br> (a) ◻ (b) ⌧ | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP\*<br> (a) ◻ (b) ⌧ |
| 3 | SEC USE ONLY | SEC USE ONLY | SEC USE ONLY | SEC USE ONLY |
| 4 | CITIZENSHIP OR PLACE OF ORGANIZATION<br> Delaware | CITIZENSHIP OR PLACE OF ORGANIZATION<br> Delaware | CITIZENSHIP OR PLACE OF ORGANIZATION<br> Delaware | CITIZENSHIP OR PLACE OF ORGANIZATION<br> Delaware |
| NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | 5 | SOLE VOTING POWER<br> 584,621 shares, of which 530,953 are directly owned by ALF3, 21,982 are directly owned by ALF3E, and 31,686 are directly owned by ALFI20. AL3A, the general partner of ALF3, ALF3E, and ALFI20, may be deemed to have sole power to vote these shares. AGB, a director of the issuer and a managing member of AL3A, may be deemed to have shared power to vote these shares. | SOLE VOTING POWER<br> 584,621 shares, of which 530,953 are directly owned by ALF3, 21,982 are directly owned by ALF3E, and 31,686 are directly owned by ALFI20. AL3A, the general partner of ALF3, ALF3E, and ALFI20, may be deemed to have sole power to vote these shares. AGB, a director of the issuer and a managing member of AL3A, may be deemed to have shared power to vote these shares. |
| NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | 6 | SHARED VOTING POWER<br> See response to row 5. | SHARED VOTING POWER<br> See response to row 5. |
| NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | 7 | SOLE DISPOSITIVE POWER<br> 584,621 shares, of which 530,953 are directly owned by ALF3, 21,982 are directly owned by ALF3E, and 31,686 are directly owned by ALFI20. AL3A, the general partner of ALF3, ALF3E, and ALFI20, may be deemed to have sole power to dispose of these shares. AGB, a director of the issuer and a managing member of AL3A, may be deemed to have shared power to dispose of these shares. | SOLE DISPOSITIVE POWER<br> 584,621 shares, of which 530,953 are directly owned by ALF3, 21,982 are directly owned by ALF3E, and 31,686 are directly owned by ALFI20. AL3A, the general partner of ALF3, ALF3E, and ALFI20, may be deemed to have sole power to dispose of these shares. AGB, a director of the issuer and a managing member of AL3A, may be deemed to have shared power to dispose of these shares. |
| | | 8 | SHARED DISPOSITIVE POWER<br> See response to row 7. | SHARED DISPOSITIVE POWER<br> See response to row 7. |
| 9 | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON | 584,621 |
| 10 | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES\* | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES\* | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES\* | ◻ |
| 11 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 | 0.7%(1) |
| 12 | TYPE OF REPORTING PERSON\* | TYPE OF REPORTING PERSON\* | TYPE OF REPORTING PERSON\* | OO |

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(1) Based on 88,984,890 shares of Class A Common Stock outstanding as of September 30, 2022, as reported in the issuer's Quarterly Report on Form 10-Q for the quarter ended September 30, 2022.

CUSIP NO. 85225A107 13 G Page 11 of 15

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| | | | | |
|:---|:---|:---|:---|:---|
| 1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NAME OF REPORTING<br> SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON<br> Andrew G. Braccia ("AGB") | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NAME OF REPORTING<br> SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON<br> Andrew G. Braccia ("AGB") | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NAME OF REPORTING<br> SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON<br> Andrew G. Braccia ("AGB") | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NAME OF REPORTING<br> SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON<br> Andrew G. Braccia ("AGB") |
| 2 | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP\*<br> (a) ◻ (b) ⌧ | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP\*<br> (a) ◻ (b) ⌧ | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP\*<br> (a) ◻ (b) ⌧ | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP\*<br> (a) ◻ (b) ⌧ |
| 3 | SEC USE ONLY | SEC USE ONLY | SEC USE ONLY | SEC USE ONLY |
| 4 | CITIZENSHIP OR PLACE OF ORGANIZATION<br> Delaware | CITIZENSHIP OR PLACE OF ORGANIZATION<br> Delaware | CITIZENSHIP OR PLACE OF ORGANIZATION<br> Delaware | CITIZENSHIP OR PLACE OF ORGANIZATION<br> Delaware |
| NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | 5 | SOLE VOTING POWER<br> See response to row 6. | SOLE VOTING POWER<br> See response to row 6. |
| NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | 6 | SHARED VOTING POWER<br> 14,514,196 shares, of which 12,808,246 are directly owned by AGF, 250,729 are directly owned by AGFSP, 870,600 are directly owned by AGFI10, 530,953 are directly owned by ALF3, 21,982 are directly owned by ALF3E, and 31,686 are directly owned by ALFI20. AGFA, the general partner of AGF and AGFSP, may be deemed to have sole power to vote these shares. ALF3A LP, the general partner of ALF3 and ALF3E, may be deemed to have sole power to vote these shares. AL3A, the general partner of ALF3A LP and ALFI20, may be deemed to have sole power to vote these shares. AGB, a director of the issuer and a managing member of AGFA and AL3A, may be deemed to have shared power to vote these shares. | SHARED VOTING POWER<br> 14,514,196 shares, of which 12,808,246 are directly owned by AGF, 250,729 are directly owned by AGFSP, 870,600 are directly owned by AGFI10, 530,953 are directly owned by ALF3, 21,982 are directly owned by ALF3E, and 31,686 are directly owned by ALFI20. AGFA, the general partner of AGF and AGFSP, may be deemed to have sole power to vote these shares. ALF3A LP, the general partner of ALF3 and ALF3E, may be deemed to have sole power to vote these shares. AL3A, the general partner of ALF3A LP and ALFI20, may be deemed to have sole power to vote these shares. AGB, a director of the issuer and a managing member of AGFA and AL3A, may be deemed to have shared power to vote these shares. |
| NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | NUMBER OF <br> SHARES <br> BENEFICIALLY <br> OWNED BY EACH <br> REPORTING <br> PERSON <br> WITH | 7 | SOLE DISPOSITIVE POWER<br> See response to row 8. | SOLE DISPOSITIVE POWER<br> See response to row 8. |
| | | 8 | SHARED DISPOSITIVE POWER<br> 14,514,196 shares, of which 12,808,246 are directly owned by AGF, 250,729 are directly owned by AGFSP, 870,600 are directly owned by AGFI10, 530,953 are directly owned by ALF3, 21,982 are directly owned by ALF3E, and 31,686 are directly owned by ALFI20. AGFA, the general partner of AGF and AGFSP, may be deemed to have sole power to dispose of these shares. ALF3A LP, the general partner of ALF3 and ALF3E, may be deemed to have sole power to dispose of these shares. AL3A, the general partner of ALF3A LP and ALFI20, may be deemed to have sole power to dispose of these shares. AGB, a director of the issuer and a managing member of AGFA and AL3A, may be deemed to have shared power to dispose of these shares. | SHARED DISPOSITIVE POWER<br> 14,514,196 shares, of which 12,808,246 are directly owned by AGF, 250,729 are directly owned by AGFSP, 870,600 are directly owned by AGFI10, 530,953 are directly owned by ALF3, 21,982 are directly owned by ALF3E, and 31,686 are directly owned by ALFI20. AGFA, the general partner of AGF and AGFSP, may be deemed to have sole power to dispose of these shares. ALF3A LP, the general partner of ALF3 and ALF3E, may be deemed to have sole power to dispose of these shares. AL3A, the general partner of ALF3A LP and ALFI20, may be deemed to have sole power to dispose of these shares. AGB, a director of the issuer and a managing member of AGFA and AL3A, may be deemed to have shared power to dispose of these shares. |
| 9 | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON | 14,514,196 |
| 10 | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES\* | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES\* | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES\* | ◻ |
| 11 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 | 16.3%(1) |
| 12 | TYPE OF REPORTING PERSON\* | TYPE OF REPORTING PERSON\* | TYPE OF REPORTING PERSON\* | IN |

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(1) Based on 88,984,890 shares of Class A Common Stock outstanding as of September 30, 2022, as reported in the issuer's Quarterly Report on Form 10-Q for the quarter ended September 30, 2022.

CUSIP NO. 85225A107 13 G Page 12 of 15

This Amendment No. 1 ("Amendment No. 1") amends and supplements the Schedule 13G initially filed with the United States Securities and Exchange Commission on February 14, 2022 (the "Original Schedule 13G") by the Reporting Persons. The "Reporting Persons" are collectively, Accel Growth Fund L.P. ("AGF"), Accel Growth Fund Strategic Partners L.P. ("AGFSP"), Accel Growth Fund Associates L.L.C. ("AGFA"), Accel Growth Fund Investors 2010 L.L.C. ("AGFI10"), Accel Leaders 3 L.P. ("ALF3"), Accel Leaders 3 Entrepreneurs L.P. ("ALF3E"), Accel Leaders 3 Associates L.P. ("ALF3A LP"), Accel Leaders 3 Investors (2020) L.P. ("ALFI20"), Accel Leaders 3 GP Associates L.L.C. ("AL3A"), and Andrew G. Braccia ("AGB"). 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 No. 1 have the meanings ascribed to them in the Original Schedule 13G.

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| | | | |
|:---|:---|:---|:---|
| ITEM 4. | <u>OWNERSHIP</u><br>Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1. | <u>OWNERSHIP</u><br>Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1. | <u>OWNERSHIP</u><br>Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1. |
|  | (a) | <u>Amount beneficially owned</u>:<br>See Row 9 of cover page for each Reporting Person. | <u>Amount beneficially owned</u>:<br>See Row 9 of cover page for each Reporting Person. |
|  | (b) | <u>Percent of Class</u>:<br>See Row 11 of cover page for each Reporting Person. | <u>Percent of Class</u>:<br>See Row 11 of cover page for each Reporting Person. |
|  | (c) | <u>Number of shares as to which such person has</u>: | <u>Number of shares as to which such person has</u>: |
|  |  | (i) | <u>Sole power to vote or to direct the vote</u>:<br>See Row 5 of cover page for each Reporting Person.<br>|
|  |  | (ii) | <u>Shared power to vote or to direct the vote</u>:<br>|
|  |  |  | See Row 6 of cover page for each Reporting Person. |

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| | |
|:---|:---|
| (iii) | <u>Sole power to dispose or to direct the disposition of</u>:<br>|
|  | See Row 7 of cover page for each Reporting Person. |
| (iv) | <u>Shared power to dispose or to direct the disposition of</u>: |
|  | See Row 8 of cover page for each Reporting Person. |

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CUSIP NO. 85225A107 13 G Page 13 of 15

<u>SIGNATURES</u>

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.

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| | | | |
|:---|:---|:---|:---|
| Date: February 14, 2023 | Date: February 14, 2023 |  |  |
| Entities: |  |  |  |
|  | Accel Growth Fund L.P.\* |  |  |
|  | Accel Growth Fund Strategic Partners L.P.\* |  |  |
|  | Accel Growth Fund Associates L.L.C.\* |  |  |
|  | Accel Growth Fund Investors 2010 L.L.C.\* |  |  |
|  | Accel Leaders 3 L.P.\* |  |  |
|  | Accel Leaders 3 Entrepreneurs L.P.\* |  |  |
|  | Accel Leaders 3 Associates L.P.\* |  |  |
|  | Accel Leaders 3 Investors (2020) L.P.\* |  |  |
|  | Accel Leaders 3 GP Associates L.L.C.\* |  |  |
|  |  | By: | /s/ Tracy L. Sedlock |
|  |  |  | Tracy L. Sedlock, Attorney-in-fact for the above-listed entities |
| Individuals: | Andrew G. Braccia\* |  |  |
|  |  | By: | /s/ Tracy L. Sedlock |
|  |  |  | Tracy L. Sedlock, Attorney-in-fact for the above-listed individual |

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\* Signed pursuant to a Power of Attorney already on file with the appropriate agencies.

CUSIP NO. 85225A107 13 G Page 14 of 15

<u>EXHIBIT INDEX</u>

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| | |
|:---|:---|
| <br>**Exhibit** | **Found on** <br> **Sequentially** <br>**Numbered Page** |
| Exhibit A: Agreement of Joint Filing | 15 |

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CUSIP NO. 85225A107 13 G Page 15 of 15

<u>EXHIBIT A</u>

<u>Agreement of Joint Filing</u>

The Reporting Persons agree that a single Schedule 13G (or any amendment thereto) relating to the Common Stock of Squarespace, Inc. shall be filed on behalf of each of the Reporting Persons. Note that copies of the applicable Agreement of Joint Filing are already on file with the appropriate agencies.