Alumis grants 190,225 options to CDO Christopher

Alumis Inc. reported that Chief Development Officer Bradley Mark Christopher received a stock option grant on January 26, 2026.

Rhea-AI Filing Summary

Alumis Inc. reported that Chief Development Officer Bradley Mark Christopher received a stock option grant on January 26, 2026. The option covers 190,225 shares of common stock at an exercise price of $26.31 per share and is held directly.

According to the vesting terms, 25% of the shares underlying the option vest on January 26, 2027. The remaining shares vest in equal monthly installments over the following 36 months, contingent on his continuous service under the company’s 2024 Equity Incentive Plan.

Insider Trade Summary

Grant/Award: 190,225 shares

Grant/Award 1 txn

Insider Bradley Mark Christopher

Role Chief Development Officer

Type	Security	Shares	Price	Value
Grant/Award	Stock Option (Right to Buy)	190,225	$0.00	$0.00

Holdings After Transaction: Stock Option (Right to Buy) — 190,225 contracts (Direct)

Footnotes (1)

1. F1. 25% of the shares underlying this option vest on January 26, 2027, and the remaining shares vest in equal monthly installments thereafter over the following 36 months, subject to acceleration and the Reporting Person's Continuous Service (as defined in the Issuer's 2024 Equity Incentive Plan) to the Issuer on each such vesting date.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did Alumis (ALMS) report for Bradley Mark Christopher?

Alumis reported a stock option grant to Chief Development Officer Bradley Mark Christopher. He was awarded 190,225 stock options at a $26.31 exercise price, all held directly, as of the January 26, 2026 transaction date disclosed in the Form 4.

How many Alumis (ALMS) stock options did Bradley Mark Christopher receive?

Bradley Mark Christopher received 190,225 stock options from Alumis Inc. These options give him the right to buy 190,225 shares of common stock at a fixed $26.31 exercise price, subject to the vesting schedule and continuous service conditions described in the company’s equity plan.

What is the exercise price of the Alumis (ALMS) options granted to Bradley Mark Christopher?

The stock options granted to Bradley Mark Christopher carry a $26.31 exercise price per share. This means he can purchase Alumis common stock at $26.31 for each of the 190,225 underlying shares, once the options vest under the stated vesting schedule and service conditions.

What is the vesting schedule for Bradley Mark Christopher’s Alumis (ALMS) stock options?

The options vest 25% on January 26, 2027, with the remaining shares vesting in equal monthly installments over the next 36 months. Vesting depends on Bradley Mark Christopher’s continuous service to Alumis under the terms of the company’s 2024 Equity Incentive Plan.

How many Alumis (ALMS) derivative securities does Bradley Mark Christopher own after this transaction?

After the reported transaction, Bradley Mark Christopher beneficially owns 190,225 stock options. These derivative securities are held directly, each linked to one share of Alumis common stock, and are subject to the multi-year vesting schedule and continuous service requirements specified.

What role does Bradley Mark Christopher hold at Alumis (ALMS) in this Form 4 filing?

In the Form 4, Bradley Mark Christopher is identified as Alumis Inc.’s Chief Development Officer. His officer status explains why this stock option grant, totaling 190,225 options with a $26.31 exercise price, must be reported as an insider transaction under Section 16 rules.

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Accepted by SEC EDGAR 01/28/2026 - 07:18 PM EST Learn about SEC filing dates

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^*

Bradley Mark Christopher

(Last) (First) (Middle)

C/O ALUMIS INC.

280 EAST GRAND AVENUE

(Street)

SOUTH SAN FRANCISCO CA 94080

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

3. Date of Earliest Transaction (Month/Day/Year)
01/26/2026

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

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

X	Form filed by One Reporting Person
	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

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
Stock Option (Right to Buy)	$26.31	01/26/2026		A		190,225		(1)	01/25/2036	Common Stock	190,225	$0	190,225	D

Explanation of Responses:

1. 25% of the shares underlying this option vest on January 26, 2027, and the remaining shares vest in equal monthly installments thereafter over the following 36 months, subject to acceleration and the Reporting Person's Continuous Service (as defined in the Issuer's 2024 Equity Incentive Plan) to the Issuer on each such vesting date.

	/s/ Sanam Pangali, Attorney-in-Fact	01/28/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.