MPC Management III L.P. - 30 Sep 2025 SCHEDULE 13G/A Report for So-Young International Inc. Class A ordinary shares (SY)

Filing Manager: MPC Management III L.P.
Reporting Manager: MPC Management III L.P. (f/k/a Matrix China Management III, L.P.)
Security: So-Young International Inc. Class A ordinary shares
Symbol: SY
Shares outstanding: 91,487,544 shares
Disclosed Ownership: 6,221,153 shares
Ownership: 6.8%
Form type: SCHEDULE 13G/A
Filing time: 27 Oct 2025, 17:22:52 UTC
Date of event: 30 Sep 2025
Previous filing: 14 Aug 2025
SEC: View on sec.gov

Reporting Managers (6)

Name	Ownership	Shares Owned	shared voting power	Signature	Title
MPC III L.P. (f/k/a Matrix Partners China III, L.P.)	6.1%	5,599,035	5,599,035	/s/ David Su	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.)	0.7%	622,118	622,118	/s/ David Su	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.)	6.8%	6,221,153	6,221,153	/s/ David Su	David Su, Director of the Reporting Person's general partner
MPC GPGP III Ltd. (f/k/a Matrix China III GP GP Ltd.)	6.8%	6,221,153	6,221,153	/s/ David Su	David Su, Director
MPC III HK Limited (f/k/a Matrix Partners China III Hong Kong Limited)	6.8%	6,221,153	6,221,153	/s/ David Su	David Su, Director
David Su Tuong Sing	6.8%	6,221,153	6,221,153	/s/ David Su	David Su