# EDGAR Filing Document

**Accession Number:** 0001758530
**File Stem:** 0000950170-25-108781
**Filing Date:** 2025-8
**Character Count:** 23255
**Document Hash:** 1036ac236cdd1dbe61f41b74b32843f7
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000950170-25-108781.hdr.sgml**: 20250814

**ACCESSION NUMBER**: 0000950170-25-108781

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

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20250814

**DATE AS OF CHANGE**: 20250814

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** So-Young International Inc.
- **CENTRAL INDEX KEY:** 0001758530
- **STANDARD INDUSTRIAL CLASSIFICATION:** SERVICES-COMPUTER PROCESSING & DATA PREPARATION [7374]
- **ORGANIZATION NAME:** 06 Technology
- **EIN:** 000000000
- **STATE OF INCORPORATION:** E9
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13G/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-91179
- **FILM NUMBER:** 251217977

**BUSINESS ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** 2/F, EAST TOWER, POLY PLAZA
- **STREET 2:** NO. 66 XIANGBIN ROAD, CHAOYANG DISTRICT
- **CITY:** BEIJING
- **PROVINCE COUNTRY:** F4
- **ZIP:** 100012
- **BUSINESS PHONE:** 00861087902012

**MAIL ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** 2/F, EAST TOWER, POLY PLAZA
- **STREET 2:** NO. 66 XIANGBIN ROAD, CHAOYANG DISTRICT
- **CITY:** BEIJING
- **PROVINCE COUNTRY:** F4
- **ZIP:** 100012
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MPC Management III L.P.
- **CENTRAL INDEX KEY:** 0001910313

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** E9
- **FISCAL YEAR END:** 1231

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

**BUSINESS ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** C/O MAPLES CORPORATE SERVICES LIMITED
- **STREET 2:** PO BOX 309 UGLAND HOUSE SOUTH CHURCH ST
- **CITY:** GRAND CAYMAN
- **NON US STATE TERRITORY:** CAYMAN ISLANDS
- **PROVINCE COUNTRY:** E9
- **ZIP:** KY1-1104
- **BUSINESS PHONE:** 718-890-2244

**MAIL ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** C/O MAPLES CORPORATE SERVICES LIMITED
- **STREET 2:** PO BOX 309 UGLAND HOUSE SOUTH CHURCH ST
- **CITY:** GRAND CAYMAN
- **NON US STATE TERRITORY:** CAYMAN ISLANDS
- **PROVINCE COUNTRY:** E9
- **ZIP:** KY1-1104

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Matrix China Management III, L.P.
- **DATE OF NAME CHANGE:** 20220209

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## SCHEDULE 13G

### Under the Securities Exchange Act of 1934

**(Amendment No. 3)**

**Issuer:** So-Young International Inc.

**Title of Class of Securities:** Class A ordinary shares

**CUSIP Number:** 83356Q108

**Date of Event Which Requires Filing of this Statement:** 06/30/2025

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

- [ ] Rule 13d-1(b)

- [ ] Rule 13d-1(c)

- [x] Rule 13d-1(d)

---

| 1. | Names of Reporting Persons<br>MPC III L.P. (f/k/a Matrix Partners China III, L.P.) | Names of Reporting Persons<br>MPC III L.P. (f/k/a Matrix Partners China III, L.P.) |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [x] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [x] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>E9 | Citizenship or Place of Organization<br>E9 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>0 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>8492188 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>8492188 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>8492188 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>8492188 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>9.4% | Percent of Class Represented by Amount in Row (9)<br>9.4% |
| 12. | Type of Reporting Person (See Instructions)<br>PN | Type of Reporting Person (See Instructions)<br>PN |

**Comment for Type of Reporting Person:** This statement on Schedule 13G is filed by MPC HK III, MPC III, MPC III-A, MPC Management III, MPC III GP (each as defined in Item 2(a) below) and David Su ("Su," collectively, with MPC HK III, MPC III, MPC III-A, MPC Management III and MPC III GP, the "Reporting Persons"). The Reporting Persons expressly disclaim status as a "group" for purposes of this Schedule 13G.

Consists of 1 Class A ordinary share and 11,039,843 ADSs held indirectly by MPC III (through MPC HK III). MPC Management III and MPC III GP are the direct and indirect general partners, respectively, of MPC III and MPC III-A, and as such, may exercise voting and dispositive power over these shares. Su, a director of MPC III GP, may be deemed to share voting and dispositive power over these shares.

This percentage is based on a total of 90,626,150 Class A ordinary shares outstanding as of June 30, 2025, as disclosed to the Reporting Persons by the Issuer.

---

| 1. | Names of Reporting Persons<br>MPC III-A L.P. (f/k/a Matrix Partners China III-A, L.P.) | Names of Reporting Persons<br>MPC III-A L.P. (f/k/a Matrix Partners China III-A, L.P.) |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [x] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [x] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>E9 | Citizenship or Place of Organization<br>E9 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>0 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>943575 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>943575 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>943575 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>943575 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>1% | Percent of Class Represented by Amount in Row (9)<br>1% |
| 12. | Type of Reporting Person (See Instructions)<br>PN | Type of Reporting Person (See Instructions)<br>PN |

**Comment for Type of Reporting Person:** The Reporting Persons expressly disclaim status as a "group" for purposes of this Schedule 13G.

Consists of 6 Class A ordinary shares and 1,226,640 ADSs held indirectly by MPC III-A (through MPC HK III). MPC Management III and MPC III GP are the direct and indirect general partners, respectively, of MPC III and MPC III-A, and as such, may exercise voting and dispositive power over these shares. Su, a director of MPC III GP, may be deemed to share voting and dispositive power over these shares.

This percentage is based on a total of 90,626,150 Class A ordinary shares outstanding as of June 30, 2025, as disclosed to the Reporting Persons by the Issuer.

---

| 1. | Names of Reporting Persons<br>MPC Management III L.P. (f/k/a Matrix China Management III, L.P.) | Names of Reporting Persons<br>MPC Management III L.P. (f/k/a Matrix China Management III, L.P.) |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [x] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [x] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>E9 | Citizenship or Place of Organization<br>E9 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>0 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>9435763 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>9435763 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>9435763 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>9435763 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>10.4% | Percent of Class Represented by Amount in Row (9)<br>10.4% |
| 12. | Type of Reporting Person (See Instructions)<br>PN | Type of Reporting Person (See Instructions)<br>PN |

**Comment for Type of Reporting Person:** The Reporting Persons expressly disclaim status as a "group" for purposes of this Schedule 13G.

Consists of (i) 1 Class A ordinary share and 11,039,843 ADSs held indirectly by MPC III and (ii) 6 Class A ordinary shares and 1,226,640 ADSs held indirectly by MPC III-A (in each case through MPC HK III). MPC Management III and MPC III GP are the direct and indirect general partners, respectively, of MPC III and MPC III-A, and as such, may exercise voting and dispositive power over these shares. Su, a director of MPC III GP, may be deemed to share voting and dispositive power over these shares.

This percentage is based on a total of 90,626,150 Class A ordinary shares outstanding as of June 30, 2025, as disclosed to the Reporting Persons by the Issuer.

---

| 1. | Names of Reporting Persons<br>MPC GPGP III Ltd. (f/k/a Matrix China III GP GP Ltd.) | Names of Reporting Persons<br>MPC GPGP III Ltd. (f/k/a Matrix China III GP GP Ltd.) |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [x] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [x] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>E9 | Citizenship or Place of Organization<br>E9 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>0 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>9435763 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>9435763 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>9435763 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>9435763 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>10.4% | Percent of Class Represented by Amount in Row (9)<br>10.4% |
| 12. | Type of Reporting Person (See Instructions)<br>CO | Type of Reporting Person (See Instructions)<br>CO |

**Comment for Type of Reporting Person:** The Reporting Persons expressly disclaim status as a "group" for purposes of this Schedule 13G.

Consists of (i) 1 Class A ordinary share and 11,039,843 ADSs held indirectly by MPC III and (ii) 6 Class A ordinary shares and 1,226,640 ADSs held indirectly by MPC III-A (in each case through MPC HK III). MPC Management III and MPC III GP are the direct and indirect general partners, respectively, of MPC III and MPC III-A, and as such, may exercise voting and dispositive power over these shares. Su, a director of MPC III GP, may be deemed to share voting and dispositive power over these shares.

This percentage is based on a total of 90,626,150 Class A ordinary shares outstanding as of June 30, 2025, as disclosed to the Reporting Persons by the Issuer.

---

| 1. | Names of Reporting Persons<br>MPC III HK Limited (f/k/a Matrix Partners China III Hong Kong Limited) | Names of Reporting Persons<br>MPC III HK Limited (f/k/a Matrix Partners China III Hong Kong Limited) |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [x] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [x] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>K3 | Citizenship or Place of Organization<br>K3 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>0 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>9435763 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>9435763 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>9435763 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>9435763 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>10.4% | Percent of Class Represented by Amount in Row (9)<br>10.4% |
| 12. | Type of Reporting Person (See Instructions)<br>CO | Type of Reporting Person (See Instructions)<br>CO |

**Comment for Type of Reporting Person:** The Reporting Persons expressly disclaim status as a "group" for purposes of this Schedule 13G.

Consists of (i) 1 Class A ordinary share and 11,039,843 ADSs held indirectly by MPC III and (ii) 6 Class A ordinary shares and 1,226,640 ADSs held indirectly by MPC III-A (in each case through MPC HK III). MPC Management III and MPC III GP are the direct and indirect general partners, respectively, of MPC III and MPC III-A, and as such, may exercise voting and dispositive power over these shares. Su, a director of MPC III GP, may be deemed to share voting and dispositive power over these shares.

This percentage is based on a total of 90,626,150 Class A ordinary shares outstanding as of June 30, 2025, as disclosed to the Reporting Persons by the Issuer.

---

| 1. | Names of Reporting Persons<br>David Su Tuong Sing | Names of Reporting Persons<br>David Su Tuong Sing |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [x] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [x] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>U0 | Citizenship or Place of Organization<br>U0 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>0 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>9435763 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>9435763 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>9435763 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>9435763 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>10.4% | Percent of Class Represented by Amount in Row (9)<br>10.4% |
| 12. | Type of Reporting Person (See Instructions)<br>IN | Type of Reporting Person (See Instructions)<br>IN |

**Comment for Type of Reporting Person:** The Reporting Persons expressly disclaim status as a "group" for purposes of this Schedule 13G.

Consists of (i) 1 Class A ordinary share and 11,039,843 ADSs held indirectly by MPC III and (ii) 6 Class A ordinary shares and 1,226,640 ADSs held indirectly by MPC III-A (in each case through MPC HK III). MPC Management III and MPC III GP are the direct and indirect general partners, respectively, of MPC III and MPC III-A, and as such, may exercise voting and dispositive power over these shares. Su, a director of MPC III GP, may be deemed to share voting and dispositive power over these shares.

This percentage is based on a total of 90,626,150 Class A ordinary shares outstanding as of June 30, 2025, as disclosed to the Reporting Persons by the Issuer.

---

**Item 1(a). Name of Issuer:**
So-Young International Inc.

**Item 1(b). Address of Issuer's Principal Executive Offices:**
2/F, East Tower, Poly Plaza, No. 66 Xiangbin Road, Chaoyang District, Beijing, China 100102

**Item 2(a). Name of Person Filing:**
This Amendment No. 3 (this "Amendment") amends and supplements the Schedule 13G originally filed by the Reporting Persons with the United States Securities and Exchange Commission (the "Commission") on February 13, 2020, as amended by Amendment No. 1 as filed with the Commission on February 14, 2022  and Amendment No. 2 as filed with the Commission on February 9, 2024 (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.

Name of Person Filing:

MPC III L.P. (f/k/a Matrix Partners China III, L.P.) ("MPC III")

MPC III-A L.P. (f/k/a Matrix Partners China III-A, L.P. ("MPC III-A")

MPC Management III L.P. (f/k/a Matrix China Management III, L.P.) ("MPC Management III")

MPC GPGP III Ltd. (f/k/a Matrix China III GP GP, Ltd.) ("MPC III GP")

MPC III HK Limited (f/k/a Matrix Partners China III Hong Kong Limited) ("MPC HK III")

David Su Tuong Sing ("Su")

**Item 2(b). Address of Principal Business Office:**
Item 2(b) of the Origininal 13(g) is incorporate herein by reference.

**Item 2(c). Citizenship:**
Item 2(c) of the Origininal 13(g) is incorporate herein by reference.

**Item 2(d). Title of Class of Securities:**
Class A ordinary shares

**Item 2(e). CUSIP Number:**
83356Q108

**Item 3. If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:**

(a) [ ] Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o).

(b) [ ] Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c).

(c) [ ] Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c).

(d) [ ] Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8).

(e) [ ] An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);

(f) [ ] An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);

(g) [ ] A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);

(h) [ ] A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);

(i) [ ] A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);

(j) [ ] A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), if filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:

(k) [ ] Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).

**Item 4. Ownership:**

**(a) Amount beneficially owned:**

See Row 9 of the cover page for each Reporting Person and the corresponding comments.

**(b) Percent of class:**

See Row 11 of the cover page for each Reporting Person and the corresponding comments.

**(c) Number of shares as to which the person has:**

**(i) Sole power to vote or to direct the vote:**

See Row 5 of the cover page for each Reporting Person and the corresponding comments.

**(ii) Shared power to vote or to direct the vote:**

See Row 6 of the cover page for each Reporting Person and the corresponding comments.

**(iii) Sole power to dispose or to direct the disposition of:**

See Row 7 of the cover page for each Reporting Person and the corresponding comments.

**(iv) Shared power to dispose or to direct the disposition of:**

See Row 8 of the cover page for each Reporting Person and the corresponding comments.

**Item 5. Ownership of Five Percent or Less of a Class.**

[x] 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.

**Item 6. Ownership of More than 5 Percent on Behalf of Another Person.**

Not Applicable

**Item 7. Identification and Classification of the Subsidiary**

Not Applicable

**Item 8. Identification and Classification of Members of the Group**

Not Applicable

**Item 9. Notice of Dissolution of Group**

Not Applicable

**Item 10. Certification:**

—

### 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.

**MPC III L.P. (f/k/a Matrix Partners China III, L.P.)**

**Date:** 08/14/2025

**By:** /s/ David Su

**Name & Title:** David Su, Director of the general partner of the Reporting Person's general partner

**MPC III-A L.P. (f/k/a Matrix Partners China III-A, L.P.)**

**Date:** 08/14/2025

**By:** /s/ David Su

**Name & Title:** David Su, Director of the general partner of the Reporting Person's general partner

**MPC Management III L.P. (f/k/a Matrix China Management III, L.P.)**

**Date:** 08/14/2025

**By:** /s/ David Su

**Name & Title:** David Su, Director of the Reporting Person's general partner

**MPC GPGP III Ltd. (f/k/a Matrix China III GP GP Ltd.)**

**Date:** 08/14/2025

**By:** /s/ David Su

**Name & Title:** David Su, Director

**MPC III HK Limited (f/k/a Matrix Partners China III Hong Kong Limited)**

**Date:** 08/14/2025

**By:** /s/ David Su

**Name & Title:** David Su, Director

**David Su Tuong Sing**

**Date:** 08/14/2025

**By:** /s/ David Su

**Name & Title:** David Su