Acelyrin, Inc. announced effective on May 8, 2024, the Company and Ron Oyston mutually agreed that Mr. Oyston will step down from his position as Chief People Officer, effective August 15, 2024. The Company has entered into a Separation Agreement and Mutual Release with Mr. Oyston pursuant to which the Company agreed to provide Mr. Oyston with certain benefits, including the following: 12 months of each of salary continuation, COBRA health insurance premiums and equity award vesting acceleration, a lump sum payment equal to a pro-rated portion of his 2024 target bonus, and an extension of the post-termination exercise period of his outstanding stock option awards.