AyurMaya Capital Management Company, LP

SEC source: 0000902664-25-002532 · ownership.xml · nonDerivative · entry 1

AyurMaya Capital Management Company, LP · CIK 0001975990 · Director · 10% owner · See Remarks

GOEL DAVID E. · CIK 0001548144 · Director · 10% owner · See Remarks

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnotes

Disclosed balance after: 15,139,707

F1 · kind: Pursuant to the Agreement and Plan of Merger, as amended on April 20, 2025, by and among ACELYRIN, Inc., a Delaware corporation ("ACELYRIN") and Alumis Inc., a Delaware corporation (the "Issuer") and the other parties thereto (the "Merger Agreement"), the shares of Common Stock were issued to the AyurMaya Fund (as defined below) in exchange for 9,334,735 shares of ACELYRIN common stock on the effective date of the merger contemplated by the Merger Agreement.

F2 · shares: Reflects the estimated number of shares of Common Stock to be issued to the AyurMaya Fund (as defined below) pursuant to the Merger Agreement. The Reporting Persons will file an amendment to this Form 4 to the extent the actual number of shares of Common Stock issued differs in any material respect from the number reported in column (4).

F1 · price: Pursuant to the Agreement and Plan of Merger, as amended on April 20, 2025, by and among ACELYRIN, Inc., a Delaware corporation ("ACELYRIN") and Alumis Inc., a Delaware corporation (the "Issuer") and the other parties thereto (the "Merger Agreement"), the shares of Common Stock were issued to the AyurMaya Fund (as defined below) in exchange for 9,334,735 shares of ACELYRIN common stock on the effective date of the merger contemplated by the Merger Agreement.

F3 · ownership.nature: The securities reported herein are 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.

F4 · ownership.nature: 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.

SEC source: 0000902664-25-002533 · ownership.xml · nonDerivative · entry 1

AyurMaya Capital Management Company, LP · CIK 0001975990 · Director · 10% owner · See Remarks

GOEL DAVID E. · CIK 0001548144 · Director · 10% owner · See Remarks

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnotes

Disclosed balance after: 0

F1 · kind: 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.

F1 · price: 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.

F2 · ownership.nature: 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.

F3 · ownership.nature: 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.

SEC source: 0000902664-24-004603 · ownership.xml · derivative · entry 5

AyurMaya Capital Management Company, LP · CIK 0001975990 · Director · 10% owner · See Remarks

GOEL DAVID E. · CIK 0001548144 · Director · 10% owner · See Remarks

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnotes

Disclosed balance after: 0

Underlying: Common Stock · 2,726,398 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each share of preferred stock is convertible at any time, at the holder's election, into shares of Class A Common Stock on a 4.675-to-one basis (on an adjusted basis, after giving effect to the reverse stock split of the Class A Common Stock effected by the Issuer on June 20, 2024) and has no expiration date. Immediately prior to the completion of the Issuer's initial public offering of voting common stock (the "Common Stock") (the "IPO"), the shares of preferred stock reported herein automatically converted into the number of shares of Class A Common Stock in column 3.

F1 · derivative.exercise_date: Each share of preferred stock is convertible at any time, at the holder's election, into shares of Class A Common Stock on a 4.675-to-one basis (on an adjusted basis, after giving effect to the reverse stock split of the Class A Common Stock effected by the Issuer on June 20, 2024) and has no expiration date. Immediately prior to the completion of the Issuer's initial public offering of voting common stock (the "Common Stock") (the "IPO"), the shares of preferred stock reported herein automatically converted into the number of shares of Class A Common Stock in column 3.

F1 · derivative.expiration_date: Each share of preferred stock is convertible at any time, at the holder's election, into shares of Class A Common Stock on a 4.675-to-one basis (on an adjusted basis, after giving effect to the reverse stock split of the Class A Common Stock effected by the Issuer on June 20, 2024) and has no expiration date. Immediately prior to the completion of the Issuer's initial public offering of voting common stock (the "Common Stock") (the "IPO"), the shares of preferred stock reported herein automatically converted into the number of shares of Class A Common Stock in column 3.

F2 · derivative.underlying: Each share of Class A Common Stock was reclassified into one share of Common Stock immediately prior to the completion of the IPO.

F3 · ownership.nature: The securities reported herein are 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.

F4 · ownership.nature: 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.

SEC source: 0000902664-24-004603 · ownership.xml · derivative · entry 4

AyurMaya Capital Management Company, LP · CIK 0001975990 · Director · 10% owner · See Remarks

GOEL DAVID E. · CIK 0001548144 · Director · 10% owner · See Remarks

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnotes

Disclosed balance after: 0

Underlying: Common Stock · 1,141,494 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each share of preferred stock is convertible at any time, at the holder's election, into shares of Class A Common Stock on a 4.675-to-one basis (on an adjusted basis, after giving effect to the reverse stock split of the Class A Common Stock effected by the Issuer on June 20, 2024) and has no expiration date. Immediately prior to the completion of the Issuer's initial public offering of voting common stock (the "Common Stock") (the "IPO"), the shares of preferred stock reported herein automatically converted into the number of shares of Class A Common Stock in column 3.

F1 · derivative.exercise_date: Each share of preferred stock is convertible at any time, at the holder's election, into shares of Class A Common Stock on a 4.675-to-one basis (on an adjusted basis, after giving effect to the reverse stock split of the Class A Common Stock effected by the Issuer on June 20, 2024) and has no expiration date. Immediately prior to the completion of the Issuer's initial public offering of voting common stock (the "Common Stock") (the "IPO"), the shares of preferred stock reported herein automatically converted into the number of shares of Class A Common Stock in column 3.

F1 · derivative.expiration_date: Each share of preferred stock is convertible at any time, at the holder's election, into shares of Class A Common Stock on a 4.675-to-one basis (on an adjusted basis, after giving effect to the reverse stock split of the Class A Common Stock effected by the Issuer on June 20, 2024) and has no expiration date. Immediately prior to the completion of the Issuer's initial public offering of voting common stock (the "Common Stock") (the "IPO"), the shares of preferred stock reported herein automatically converted into the number of shares of Class A Common Stock in column 3.

F2 · derivative.underlying: Each share of Class A Common Stock was reclassified into one share of Common Stock immediately prior to the completion of the IPO.

F3 · ownership.nature: The securities reported herein are 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.

F4 · ownership.nature: 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.

SEC source: 0000902664-24-004603 · ownership.xml · derivative · entry 3

AyurMaya Capital Management Company, LP · CIK 0001975990 · Director · 10% owner · See Remarks

GOEL DAVID E. · CIK 0001548144 · Director · 10% owner · See Remarks

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnotes

Disclosed balance after: 0

Underlying: Common Stock · 4,278,074 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each share of preferred stock is convertible at any time, at the holder's election, into shares of Class A Common Stock on a 4.675-to-one basis (on an adjusted basis, after giving effect to the reverse stock split of the Class A Common Stock effected by the Issuer on June 20, 2024) and has no expiration date. Immediately prior to the completion of the Issuer's initial public offering of voting common stock (the "Common Stock") (the "IPO"), the shares of preferred stock reported herein automatically converted into the number of shares of Class A Common Stock in column 3.

F1 · derivative.exercise_date: Each share of preferred stock is convertible at any time, at the holder's election, into shares of Class A Common Stock on a 4.675-to-one basis (on an adjusted basis, after giving effect to the reverse stock split of the Class A Common Stock effected by the Issuer on June 20, 2024) and has no expiration date. Immediately prior to the completion of the Issuer's initial public offering of voting common stock (the "Common Stock") (the "IPO"), the shares of preferred stock reported herein automatically converted into the number of shares of Class A Common Stock in column 3.

F1 · derivative.expiration_date: Each share of preferred stock is convertible at any time, at the holder's election, into shares of Class A Common Stock on a 4.675-to-one basis (on an adjusted basis, after giving effect to the reverse stock split of the Class A Common Stock effected by the Issuer on June 20, 2024) and has no expiration date. Immediately prior to the completion of the Issuer's initial public offering of voting common stock (the "Common Stock") (the "IPO"), the shares of preferred stock reported herein automatically converted into the number of shares of Class A Common Stock in column 3.

F2 · derivative.underlying: Each share of Class A Common Stock was reclassified into one share of Common Stock immediately prior to the completion of the IPO.

F3 · ownership.nature: The securities reported herein are 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.

F4 · ownership.nature: 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.

SEC source: 0000902664-24-004603 · ownership.xml · nonDerivative · entry 2

AyurMaya Capital Management Company, LP · CIK 0001975990 · Director · 10% owner · See Remarks

GOEL DAVID E. · CIK 0001548144 · Director · 10% owner · See Remarks

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnotes

Disclosed balance after: 10,645,966

F3 · ownership.nature: The securities reported herein are 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.

F4 · ownership.nature: 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.

SEC source: 0000902664-24-004603 · ownership.xml · nonDerivative · entry 1

AyurMaya Capital Management Company, LP · CIK 0001975990 · Director · 10% owner · See Remarks

GOEL DAVID E. · CIK 0001548144 · Director · 10% owner · See Remarks

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnotes

Disclosed balance after: 8,145,966

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · security: Each share of Class A Common Stock was reclassified into one share of Common Stock immediately prior to the completion of the IPO.

F1 · price: Each share of preferred stock is convertible at any time, at the holder's election, into shares of Class A Common Stock on a 4.675-to-one basis (on an adjusted basis, after giving effect to the reverse stock split of the Class A Common Stock effected by the Issuer on June 20, 2024) and has no expiration date. Immediately prior to the completion of the Issuer's initial public offering of voting common stock (the "Common Stock") (the "IPO"), the shares of preferred stock reported herein automatically converted into the number of shares of Class A Common Stock in column 3.

F3 · ownership.nature: The securities reported herein are 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.

F4 · ownership.nature: 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.

SEC source: 0000902664-23-002975 · ownership.xml · derivative · entry 3

AyurMaya Capital Management Company, LP · CIK 0001975990 · Director · See Remarks

GOEL DAVID E. · CIK 0001548144 · Director · See Remarks

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnotes

Disclosed balance after: 0

Underlying: Common Stock · 3,709,429 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each share of preferred stock is convertible into one share of Common and has no expiration date. Immediately prior to the completion of the Issuer's initial public offering of Common Stock (the "IPO"), all shares of preferred stock automatically converted into shares of Common Stock.

F1 · derivative.exercise_date: Each share of preferred stock is convertible into one share of Common and has no expiration date. Immediately prior to the completion of the Issuer's initial public offering of Common Stock (the "IPO"), all shares of preferred stock automatically converted into shares of Common Stock.

F1 · derivative.expiration_date: Each share of preferred stock is convertible into one share of Common and has no expiration date. Immediately prior to the completion of the Issuer's initial public offering of Common Stock (the "IPO"), all shares of preferred stock automatically converted into shares of Common Stock.

F2 · derivative.underlying: Each share of Class A Common Stock was reclassified into one share of Common Stock immediately prior to the completion of the IPO.

F3 · ownership.nature: The securities reported herein are 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.

F4 · ownership.nature: 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.

SEC source: 0000902664-23-002975 · ownership.xml · derivative · entry 2

AyurMaya Capital Management Company, LP · CIK 0001975990 · Director · See Remarks

GOEL DAVID E. · CIK 0001548144 · Director · See Remarks

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnotes

Disclosed balance after: 0

Underlying: Common Stock · 5,625,306 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each share of preferred stock is convertible into one share of Common and has no expiration date. Immediately prior to the completion of the Issuer's initial public offering of Common Stock (the "IPO"), all shares of preferred stock automatically converted into shares of Common Stock.

F1 · derivative.exercise_date: Each share of preferred stock is convertible into one share of Common and has no expiration date. Immediately prior to the completion of the Issuer's initial public offering of Common Stock (the "IPO"), all shares of preferred stock automatically converted into shares of Common Stock.

F1 · derivative.expiration_date: Each share of preferred stock is convertible into one share of Common and has no expiration date. Immediately prior to the completion of the Issuer's initial public offering of Common Stock (the "IPO"), all shares of preferred stock automatically converted into shares of Common Stock.

F2 · derivative.underlying: Each share of Class A Common Stock was reclassified into one share of Common Stock immediately prior to the completion of the IPO.

F3 · ownership.nature: The securities reported herein are 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.

F4 · ownership.nature: 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.

SEC source: 0000902664-23-002975 · ownership.xml · nonDerivative · entry 1

AyurMaya Capital Management Company, LP · CIK 0001975990 · Director · See Remarks

GOEL DAVID E. · CIK 0001548144 · Director · See Remarks

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnotes

Disclosed balance after: 9,334,735

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · security: Each share of Class A Common Stock was reclassified into one share of Common Stock immediately prior to the completion of the IPO.

F1 · price: Each share of preferred stock is convertible into one share of Common and has no expiration date. Immediately prior to the completion of the Issuer's initial public offering of Common Stock (the "IPO"), all shares of preferred stock automatically converted into shares of Common Stock.

F3 · ownership.nature: The securities reported herein are 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.

F4 · ownership.nature: 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.