SCHEDULE 13D/A

LAVA THERAPEUTICS NV

Common Shares, par value Euro 0.12 per share · CUSIP: N51517105

Event date: 2025-09-16

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

• Versant Venture Capital VI, L.P.Reported CIK 0001687880

  Shares: 2,370,533 · Class: 9.0%

• Versant Ventures VI GP, L.P.Reported CIK 0001777654

  Shares: 2,370,533 · Class: 9.0%

• Versant Ventures VI GP-GP, LLCReported CIK 0001777652

  Shares: 2,370,533 · Class: 9.0%

• Versant Vantage I, L.P.Reported CIK 0001765253

  Shares: 532,870 · Class: 2.0%

• Versant Vantage I GP, L.P.Reported CIK 0001777651

  Shares: 532,870 · Class: 2.0%

• Versant Vantage I GP-GP, LLCReported CIK 0001777653

  Shares: 532,870 · Class: 2.0%

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