SCHEDULE 13G/A

OMNIAB INC

Common Stock, par value $0.0001 per share · CUSIP: 68218J103

Event date: 2025-08-26

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

• Ash X LP

  Shares: 8,271,347 · Class: 5.8%

• RLG GP LLC

  Shares: 8,271,347 · Class: 5.8%

• RLG Capco II LLC

  Shares: 1,800,246 · Class: 1.3%

• Robert Goldstein

  Shares: 10,071,593 · Class: 7%

• Joel Greenblatt

  Shares: 1,428,571 · Class: 1%

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