13D Filings
Alumis Inc.
ALMS
Amendment
Ownership

15.80%

Total Shares

15,139,707

Issuer CIK

1847367

CUSIP

022307102

Event Date

May 20, 2025

Accepted

May 23, 2025, 04:16 PM

Reporting Persons (2)
Joint Filing

This is a joint filing. The reported shares may overlap between reporting persons and should not be summed.

NameType% of ClassAggregateSole VotingShared Voting
AyurMaya Capital Management Company, LP
Investment Adviser
15.80%15,139,707015,139,707
David E. Goel
Individual
15.80%15,139,707015,139,707
Disclosure Items (3)

Security Title

Common Stock, par value $0.0001 per share

Issuer Name

Alumis Inc.

Issuer Address

280 EAST GRAND AVENUE, SOUTH SAN FRANCISCO, CA, 94080

The Merger closed on May 21, 2025. Pursuant to the Merger Agreement, at the effective time of the Merger (the "Effective Time"), each issued and outstanding share of common stock of ACELYRIN, par value $0.00001 per share (collectively, the "ACELYRIN Shares"), was cancelled and converted into the right to receive 0.4814 shares of Common Stock of the Issuer, without interest and, if applicable, cash in lieu of fractional shares, without interest, subject to any applicable withholding. Accordingly, at the Effective Time of the Merger, the AyurMaya Fund received, in exchange for its 9,334,735 ACELRYIN Shares, approximately 4,493,741 shares of Common Stock, as disclosed to the Reporting Persons by the Issuer. The Reporting Persons will file an amendment to the Schedule 13D to the extent the actual number of shares of Common Stock received differs materially from the foregoing. The foregoing summary of the transaction that was consummated pursuant to the Merger Agreement does not purport to be complete and is qualified in its entirety by, the full text of the Current Report on Form 8-K filed by the Issuer with the Securities and Exchange Commission on May 21, 2025, and is incorporated herein by reference.

Percentage of Class

See rows (11) and (13) of the cover pages to this Schedule 13D for the aggregate number of shares of Common Stock and percentages of the shares of Common Stock beneficially owned by each Reporting Person. The percentages used in this Schedule 13D as of the date hereof are calculated based upon approximately 95,819,723 shares of Common Stock outstanding following the Effective Time of the Merger, as disclosed to the Reporting Persons by the Issuer.

Number of Shares

See rows (7) through (10) of the cover pages to this Schedule 13D for the number of shares of Common Stock as to which each Reporting Person has the sole or shared power to vote or direct the vote and sole or shared power to dispose or to direct the disposition.

Transactions

Other than as described in Item 4 of this Amendment No. 2, no transactions in the shares of Common Stock have been effected by the Reporting Persons during the past sixty (60) days.

Alumis Inc. — Schedule 13D | 13D Filings