SCHEDULE 13D/A

SONIDA SENIOR LIVING INC

Common Stock, $0.01 par value per share · CUSIP: 140475203

Event date: 2026-03-11

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

• Conversant Dallas Parkway (A) LPReported CIK 0001892127

  Shares: 7,826,361 · Class: 16.2%

• Conversant Dallas Parkway (B) LPReported CIK 0001892128

  Shares: 869,827 · Class: 1.8%

• Conversant Dallas Parkway (D) LPReported CIK 0002016872

  Shares: 1,032,216 · Class: 2.1%

• Conversant Dallas Parkway (F) LPReported CIK 0002032036

  Shares: 648,942 · Class: 1.3%

• Conversant PIF Aggregator A, LPReported CIK 0002034747

  Shares: 3,199,998 · Class: 6.6%

• Conversant GP Holdings LLCReported CIK 0001850910

  Shares: 10,377,346 · Class: 21.4%

• Simanovsky MichaelReported CIK 0001596522

  Shares: 15,637,124 · Class: 32.3%

• Conversant Capital LLCReported CIK 0001850901

  Shares: 15,637,124 · Class: 32.3%

• Conversant Private GP LLCReported CIK 0002034835

  Shares: 5,259,778 · Class: 10.9%

• CPIF K Co-Invest SPT A, L.P.

  Shares: 224,829 · Class: 0.5%

• CPIF Sparti SAF, L.P.

  Shares: 1,834,951 · Class: 3.8%

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