SCHEDULE 13G/A

N/A

Common Stock, par value $0.01 per share · CUSIP: 83601L102

Event date: 2025-09-05

Reporting persons may disclose overlapping interests. Their amounts are shown individually and are not added into a filing total.

Filing-level shares

Unavailable

Percent of class

Unavailable

• GTCR INVESTMENT XI LLC

  Shares: 103,038,253 · Class: 36.3%

• GTCR FUND XI/A LP

  Shares: 103,038,253 · Class: 36.3%

• GTCR FUND XI/C LP

  Shares: 103,038,253 · Class: 36.3%

• GTCR CO-INVEST XI LP

  Shares: 103,038,253 · Class: 36.3%

• GTCR PARTNERS XI/A&C LP

  Shares: 103,038,253 · Class: 36.3%

Amounts are as disclosed in this filing. Schedule type alone does not establish investment intent.