[Form 4] Alumis Inc. Insider Trading Activity

Rhea-AI Filing Summary

Alumis Inc. (ALMS) – Form 4 insider filing

Chief Development Officer Mark Christopher Bradley reported new equity incentives dated 07/29/2025:

• 26,750 restricted stock units (RSUs) at $0 cost. Vesting: 25 % on 08/01/2026, then equal quarterly installments over the next 12 quarters.
• 107,100 stock options with a $3.95 exercise price, expiring 07/28/2035. Vesting: 25 % on 07/29/2026, then equal monthly installments over 36 months.

Following the grant Bradley now directly owns 48,728 common shares and indirectly controls 40,052 shares through two 2023 GRAT trusts. No open-market purchases or sales occurred; cash outlay was $0, so there is no immediate impact on Alumis’s liquidity or earnings. The awards are routine retention tools that modestly increase potential dilution while further aligning executive and shareholder interests.

Positive

• Alignment of interests: 26,750 RSUs and 107,100 options link CDO compensation directly to future share performance.

Negative

• Potential dilution: Option grant could add 107,100 shares to the float when exercised.

Insights

Equity Compensation Analyst

TL;DR: Routine retention grant; minimal dilution, stronger C-suite alignment, neutral near-term financial impact.

The 26.8k RSUs and 107.1k options constitute a standard post-IPO incentive package. At less than 1 % of outstanding shares, dilution risk is negligible. Front-loaded vesting and a 10-year option life encourage long-term value creation. Because neither cash changes hands today nor shares are sold, earnings, cash flow, and float remain essentially unchanged. Investors should view the filing as neutral, with a slight positive signal that leadership is incentivised to grow share price above the $3.95 strike.

Corporate Governance Specialist

TL;DR: Governance-friendly award structure; clear disclosure, aligns executive horizon with investors.

The grant follows the 2024 Equity Incentive Plan and features staggered vesting tied to continued service, limiting retention risk. Use of GRATs for indirect holdings is transparent and typical for estate planning. No Rule 10b5-1 sales were flagged. Overall, the filing supports a sound pay-for-performance framework without red-flag governance issues.

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^*

Richardson Derrick

(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)
	SVP, People and Culture

3. Date of Earliest Transaction (Month/Day/Year)
07/29/2025

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
Common Stock	07/29/2025		A		42,800(1)	A	$0	42,800	D

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)	$3.95	07/29/2025		A		64,200		(2)	07/28/2035	Common Stock	64,200	$0	64,200	D

Explanation of Responses:

1. Represents shares of common stock issuable upon settlement of a restricted stock unit ("RSU") grant. 25% of the shares underlying this RSU vest on August 1, 2026, and the remaining shares vest in equal quarterly installments thereafter over the following 12 quarters, subject to the Reporting Person's Continuous Service (as defined in the Issuer's 2024 Equity Incentive Plan) to the Issuer on each such vesting date.

2. 25% of the shares underlying this option vest on July 29, 2026, and the remaining shares vest in equal monthly installments thereafter over the following 36 months, subject to 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	07/31/2025
	** 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.
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FAQ

What equity awards did Alumis (ALMS) grant to its Chief Development Officer?

The company granted 26,750 RSUs and 107,100 stock options at a $3.95 exercise price.

When do the RSUs awarded on 07/29/2025 begin to vest?

25 % of the RSUs vest on 08/01/2026; the remainder vests quarterly over the next three years.

What is the expiration date of the new stock options?

The options expire on 07/28/2035.

How many Alumis shares does Mark Christopher Bradley now own?

He owns 48,728 shares directly and 40,052 shares indirectly through GRATs.

Did the insider sell any Alumis shares in this Form 4 filing?

No. The filing reports only awards; no sales or purchases of existing shares took place.

Will these awards impact Alumis’s financial statements immediately?

The grants involve no cash outlay; therefore, no immediate liquidity or earnings impact is expected, aside from standard non-cash compensation expense recognition.