Transaction Details

Footnotes

Pursuant to the Agreement and Plan of Merger, as amended on April 20, 2025, by and among Alumis Inc., a Delaware corporation ("Alumis") and ACELYRIN, Inc., a Delaware corporation (the "Issuer") and the other parties thereto, each share of Common Stock was cancelled and converted into the right to receive 0.4274 shares of Common Stock, without interest and, if applicable, cash in lieu of fractional shares, subject to any applicable withholding. | The securities reported herein were held by AyurMaya Capital Management Fund, LP (the "AyurMaya Fund"). AyurMaya Capital Management Company, LP (the "Investment Manager"), a Delaware limited partnership, is the investment advisor to the AyurMaya Fund. Mr. David E. Goel ("Mr. Goel", and together with the Investment Manager, the "Reporting Persons"), serves as the managing member of AyurMaya Capital Management Company GP, LLC, the general partner of the Investment Manager. | The filing of this statement shall not be deemed an admission that either of the Reporting Persons is the beneficial owner of the securities reported herein for purposes of Section 16 of the Securities Act of 1934, as amended, or otherwise. Each of the Reporting Persons expressly disclaims beneficial ownership of the securities reported herein except to the extent of its or his pecuniary interest therein, if any.