Alumis (NASDAQ: ALMS) insider funds report $17 common stock share buys

Rhea-AI Filing Summary

Alumis Inc. (ALMS) received a Form 4 filing from several Foresite Capital and Foresite Labs investment entities that are 10% owners, reporting indirect ownership of Alumis common stock.

On January 8, 2026, Foresite Capital Fund V, L.P. purchased 117,647 Alumis common shares at $17 per share, bringing its indirectly reported holdings to 5,702,536 shares. On the same date, Foresite Capital Opportunity Fund V, L.P. purchased 294,117 shares at $17 per share, with indirectly reported holdings of 2,908,332 shares.

The filing also lists additional indirect common stock holdings: Foresite Capital Fund VI, L.P. with 4,247,670 shares, Labs Co-Invest V, LLC with 194,459 shares, Foresite Labs Fund I, L.P. with 1,960,337 shares, and Foresite Labs Affiliates 2021, LLC with 1,176,470 shares. The reporting entities note that they may be deemed to have voting and dispositive power through their general partners or managing members and each disclaims group status and beneficial ownership beyond its pecuniary interest.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Foresite Capital Management VI LLC

(Last) (First) (Middle)

900 LARKSPUR LANDING CIRCLE

SUITE 150

(Street)

LARKSPUR CA 94939

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
ALUMIS INC. [ ALMS ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
01/08/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

	Form filed by One Reporting Person
X	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	01/08/2026		P		117,647	A	$17	5,702,536	I	See Footnote(1)
Common Stock	01/08/2026		P		294,117	A	$17	2,908,332	I	See Footnote(2)
Common Stock								4,247,670	I	See Footnote(3)
Common Stock								194,459	I	See Footnote(4)
Common Stock								1,960,337	I	See Footnote(5)
Common Stock								1,176,470	I	See Footnote(6)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

1. Name and Address of Reporting Person^*

Foresite Capital Management VI LLC

(Last) (First) (Middle)

900 LARKSPUR LANDING CIRCLE

SUITE 150

(Street)

LARKSPUR CA 94939

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

1. Name and Address of Reporting Person^*

Foresite Capital Management V, LLC

(Last) (First) (Middle)

900 LARKSPUR LANDING CIRCLE

SUITE 150

(Street)

LARKSPUR CA 94939

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

1. Name and Address of Reporting Person^*

Foresite Capital Fund V, L.P.

(Last) (First) (Middle)

900 LARKSPUR LANDING CIRCLE

SUITE 150

(Street)

LARKSPUR CA 94939

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

1. Name and Address of Reporting Person^*

Foresite Capital Opportunity Management V, LLC

(Last) (First) (Middle)

900 LARKSPUR LANDING CIRCLE

SUITE 150

(Street)

LARKSPUR CA 94939

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

1. Name and Address of Reporting Person^*

Foresite Capital Opportunity Fund V, L.P.

(Last) (First) (Middle)

900 LARKSPUR LANDING CIRCLE

SUITE 150

(Street)

LARKSPUR CA 94939

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

1. Name and Address of Reporting Person^*

Foresite Capital Fund VI LP

(Last) (First) (Middle)

900 LARKSPUR LANDING CIRCLE

SUITE 150

(Street)

LARKSPUR CA 94939

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

1. Name and Address of Reporting Person^*

Labs Co-Invest V, LLC

(Last) (First) (Middle)

900 LARKSPUR LANDING CIRCLE

SUITE 150

(Street)

LARKSPUR CA 94939

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

1. Name and Address of Reporting Person^*

Foresite Labs Management I, LLC

(Last) (First) (Middle)

101 MISSION STREET, 12TH FLOOR

(Street)

SAN FRANCISCO CA 94105

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

1. Name and Address of Reporting Person^*

Foresite Labs Fund I, L.P.

(Last) (First) (Middle)

101 MISSION STREET, 12TH FLOOR

(Street)

SAN FRANCISCO CA 94105

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

Explanation of Responses:

1. The shares are held of record by Foresite Capital Fund V, L.P. ("Fund V"). Foresite Capital Management V, LLC ("FCM V") is the general partner of Fund V and may be deemed to have sole voting and dispositive power over such shares. James B. Tananbaum ("Tananbaum"), the managing member of FCM V, may be deemed to have sole voting and dispositive power over such shares. Each of the Reporting Persons disclaims the existence of a "group", as defined in Rule 13d-5 of the Exchange Act, and, other than Fund V, disclaims beneficial ownership of the shares held by Fund V, except to the extent of such person's pecuniary interest in such securities.

2. The shares are held of record by Foresite Capital Opportunity Fund V, L.P. ("Opportunity Fund V"). Foresite Capital Opportunity Management V, LLC ("FCOM V") is the general partner of Opportunity Fund V and may be deemed to have sole voting and dispositive power over such shares. Tananbaum, the managing member of FCOM V, may be deemed to have sole voting and dispositive power over such shares. Each of the Reporting Persons disclaims the existence of a "group", as defined in Rule 13d-5 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), and, other than Opportunity Fund V, disclaims beneficial ownership of the shares held by Opportunity Fund V, except to the extent of such person's pecuniary interest in such securities.

3. The shares are held of record by Foresite Capital Fund VI, L.P. ("Fund VI"). Foresite Capital Management VI, LLC ("FCM VI") is the general partner of Fund VI and may be deemed to have sole voting and dispositive power over such shares. Tananbaum, the managing member of FCM VI, may be deemed to have sole voting and dispositive power over such shares. Each of the Reporting Persons disclaims the existence of a "group", as defined in Rule 13d-5 of the Exchange Act, and, other than Fund VI, disclaims beneficial ownership of the shares held by Fund VI, except to the extent of such person's pecuniary interest in such securities.

4. The shares are held of record by Labs Co-Invest V, LLC ("Labs Co-Invest"). FCM V is the managing member of Labs Co-Invest and may be deemed to have sole voting and dispositive power over such shares. Tananbaum, the managing member of FCM V, may be deemed to have sole voting and dispositive power over such shares. Each of the Reporting Persons disclaims the existence of a "group", as defined in Rule 13d-5 of the Exchange Act, and, other than Labs Co-Invest, disclaims beneficial ownership of the shares held by Labs Co-Invest, except to the extent of such person's pecuniary interest in such securities.

5. The shares are held of record by Foresite Labs Fund I, L.P. ("Labs Fund I"). Foresite Labs Management I, LLC ("FLM I") is the general partner of Labs Fund I and may be deemed to have sole voting and dispositive power over such shares. Tananbaum, the managing member of FLM I, may be deemed to have sole voting and dispositive power over such shares. Each of the Reporting Persons disclaims the existence of a "group", as defined in Rule 13d-5 of the Exchange Act, and, other than Labs Fund I, disclaims beneficial ownership of the shares held by Labs Fund I, except to the extent of such person's pecuniary interest in such securities.

6. The shares are held of record by Foresite Labs Affiliates 2021, LLC ("Labs Affiliates"). Foresite Labs, LLC ("Labs") is the managing member of Labs Affiliates and may be deemed to have sole voting and dispositive power over such shares. Tananbaum, a manager of Labs, may be deemed to share voting and dispositive power over such shares. Each of the Reporting Persons disclaims the existence of a "group", as defined in Rule 13d-5 of the Exchange Act, and, other than Lab Affiliates, disclaims beneficial ownership of the shares held by Labs Affiliates, except to the extent of such person's pecuniary interest in such securities.

Remarks:

This Form 4 is one of three Form 4s filed on the date hereof in respect of these transactions. The Reporting Persons for the other Form 4s are Tananbaum, Labs Affiliates and Labs.

	FORESITE CAPITAL MANAGEMENT V, LLC, By: /s/ James B. Tananbaum, Managing Member	01/12/2026
	FORESITE CAPITAL FUND V, L.P., By: Foresite Capital Management V, LLC, Its: General Partner, By: /s/ James B. Tananbaum, Managing Member	01/12/2026
	FORESITE CAPITAL OPPORTUNITY MANAGEMENT V, LLC, By: /s/ James B. Tananbaum, Managing Member	01/12/2026
	FORESITE CAPITAL OPPORTUNITY FUND V, L.P., By: Foresite Capital Opportunity Management V, LLC, Its: General Partner, By: /s/ James B. Tananbaum, Managing Member	01/12/2026
	FORESITE CAPITAL MANAGEMENT VI, LLC, By: /s/ James B. Tananbaum, Managing Member	01/12/2026
	FORESITE CAPITAL FUND VI, L.P., By: Foresite Capital Management VI, LLC, Its: General Partner, By: /s/ James B. Tananbaum, Managing Member	01/12/2026
	LABS CO-INVEST V, LLC, By: Foresite Capital Management V, LLC, Its: Managing Member, By: /s/ James B. Tananbaum, Managing Member	01/12/2026
	FORESITE LABS MANAGEMENT I, LLC, By: /s/ James B. Tananbaum, Managing Member	01/12/2026
	FORESITE LABS FUND I, L.P., By: Foresite Labs Management I, LLC, Its: General Partner, By: /s/ James B. Tananbaum, Managing Member	01/12/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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FAQ

What insider activity did Alumis (ALMS) report in this Form 4?

The Form 4 reports that Foresite Capital and Foresite Labs investment entities, each a 10% owner of Alumis Inc., updated their indirect holdings of Alumis common stock, including two open-market purchases on January 8, 2026 at $17 per share.

How many Alumis (ALMS) shares did insider funds buy and at what price?

On January 8, 2026, Foresite Capital Fund V, L.P. purchased 117,647 Alumis common shares at $17 per share, and Foresite Capital Opportunity Fund V, L.P. purchased 294,117 shares at $17 per share.

Which entities now hold Alumis (ALMS) shares according to the filing?

The filing lists indirect holdings by Foresite Capital Fund V, L.P., Foresite Capital Opportunity Fund V, L.P., Foresite Capital Fund VI, L.P., Labs Co-Invest V, LLC, Foresite Labs Fund I, L.P., and Foresite Labs Affiliates 2021, LLC.

What are the indirect Alumis (ALMS) share totals reported for key Foresite funds?

After the reported transactions, Foresite Capital Fund V, L.P. reports 5,702,536 Alumis common shares and Foresite Capital Opportunity Fund V, L.P. reports 2,908,332 shares as indirectly owned. Foresite Capital Fund VI, L.P. reports 4,247,670 shares.

Do the reporting persons claim full beneficial ownership of the Alumis (ALMS) shares?

No. The filing states that the shares are held of record by specific funds or LLCs and that the reporting persons may be deemed to have voting and dispositive power through general partners or managing members, but they disclaim group status and, other than the record holder, disclaim beneficial ownership beyond their pecuniary interest.

Are these Alumis (ALMS) holdings direct or indirect for the reporting entities?

All positions in the table are reported as indirect (I) ownership, with the nature of ownership described in the footnotes, which attribute share ownership to specific funds and LLCs that hold the shares of record.