Ligand, APAC and OmniAb, and each of their respective directors, executive officers and other members of their management and employees may be deemed to be participants in the solicitation of proxies from APAC's shareholders in connection with the Business Combination. Shareholders are urged to carefully read the preliminary proxy statement/prospectus/information statement regarding the Business Combination and the final proxy statement/prospectus/information statement when it becomes available, because it will contain important information.