SCHEDULE 13G

LATIGO BIOTHERAPEUTICS

Common Stock, par value $0.0001 per share · CUSIP: 517954103

Event date: 2026-09-30

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

• Westlake BioPartners Fund I, L.P.

  Shares: 5,944,009.00 · Class: 9.0%

• Westlake BioPartners GP I, LLC

  Shares: 5,944,009.00 · Class: 9.0%

• Westlake BioPartners Fund II, L.P.

  Shares: 5,160,847.00 · Class: 7.8%

• Westlake BioPartners GP II, LLC

  Shares: 5,160,847.00 · Class: 7.8%

• Westlake BioPartners Opportunity Fund I, L.P.

  Shares: 2,094,813.00 · Class: 3.2%

• Westlake BioPartners Opportunity GP I, LLC

  Shares: 2,094,813.00 · Class: 3.2%

• Dr. Beth C. Seidenberg

  Shares: 13,199,669.00 · Class: 19.9%

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