X0609 4 2026-08-12 0 0000886163 LIGAND PHARMACEUTICALS INC LGND 0001883821 Haas Jason false 555 HERITAGE DRIVE SUITE 200 JUPITER FL 33458 1 0 0 0 0 Common Stock 2026-08-12 4 M 0 6138 51.56 A 11119 D Common Stock 2026-08-12 4 S 0 7138 292.8078 D 3981 D Non-Qualified Stock Option (right to buy) 51.56 2026-08-12 4 M 0 6138 0.0 D 2032-06-29 Common Stock 6138 0 D The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $292.5000 to $292.8550. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. This Option was previously reported as a Grant of 5,907 shares on June 29, 2022, at an exercise price of $88.48 per share, which becomes exercisable in three successive annual installments upon completion of each calendar year of service beginning on the grant date, but was adjusted pursuant to the OmniAb Inc. separation from the issuer. By: /s/ Andrew Reardon, Attorney-in-Fact For: Jason Haas 2026-08-13