EX-99.3 9 alms-20241231xex99d3.htm EXHIBIT 99.3

Exhibit 99.3

April 21, 2025

Alumis Inc.

280 East Grand Avenue

South San Francisco, CA 94080

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Consent of Person Named as About to Become Director

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Pursuant to Rule 438 promulgated under the Securities Act of 1933, as amended (the “Securities Act”), I hereby consent to my being named in the registration statement on Form S-4 of Alumis Inc. (the “Company”), and all amendments thereto (the “Registration Statement”), and any related prospectus filed pursuant to Rule 424 promulgated under the Securities Act or related proxy statement filed pursuant to Section 14(a) of the Securities Exchange Act of 1934, as amended (including any amendments or supplements thereto), as a person anticipated to become a director of the Company upon completion of the merger described therein, and to the filing of this consent as an exhibit to the Registration Statement.

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Sincerely,

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/s/ Henry O. Gosebruch |
Henry O. Gosebruch |

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