X0609 4 2026-06-05 0 0000886163 LIGAND PHARMACEUTICALS INC LGND 0001994049 Zimmermann Martine false 555 HERITAGE DRIVE SUITE 200 JUPITER FL 33458 1 0 0 0 0 Common Stock 2026-06-05 4 A 0 836 0.0 A 5279 D Common Stock 2026-06-05 4 F 0 182 237.0 D 5097 D Non-Qualified Stock Option (right to buy) 237.0 2026-06-05 4 A 0 2938 0.0 A 2036-06-05 Common Stock 2938 2938 D Represents restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's common stock. Acquired by a grant of the Board of Directors of the Company at their annual meeting on June 5, 2026. Fully vests on the earlier of (A) the date of the next annual meeting of the Company stockholders following the grant date or (B) on the first anniversary of the date of grant. Represents shares withheld by the Issuer in payment of the tax liability arising in connection with the settlement of restricted stock units. Acquired by a grant of the Board of Directors of the Company at their annual meeting on June 5, 2026. Fully vests on the earlier of (A) the date of the next annual meeting of the Company stockholders following the grant date or (B) on the first anniversary of the date of grant. By: /s/ Andrew Reardon, Attorney-in-Fact For: Martine Zimmermann 2026-06-09