SCHEDULE 13G

EQUILLIUM INC

Common Stock, par value $0.0001 per share · CUSIP: 29446K106

Event date: 2025-09-30

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

• ADAR1 Capital Management, LLC

  Shares: 6,117,290.00 · Class: 9.9%

• ADAR1 Capital Management GP, LLC

  Shares: 6,194,882.00 · Class: 9.9%

• Daniel Schneeberger

  Shares: 6,117,290.00 · Class: 9.9%

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