Alumis development chief Bradley sells 623 shares

The shares were sold under the issuer’s sell-to-cover policy to satisfy taxes tied to restricted stock unit vesting and settlement.

Available on EDGAR 11/04/2026 - 04:20 PM EST Accepted by SEC EDGAR 11/04/2026 - 04:19 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

Alumis Inc. (ALMS) Chief Development Officer Mark Christopher Bradley sold 623 shares on November 2, 2026, at a weighted average of $6.52 per share; individual sales ranged from $6.42 to $6.52 per share. The sale was required under the issuer’s sell-to-cover policy to satisfy tax obligations tied to vesting and settlement of restricted stock units granted July 29, 2025, and was not discretionary. No Rule 10b5-1 plan is reported. Bradley directly held 47,910 shares following the sale.

Insider Trade Summary

Net Seller: 623 shares

Net Sell 1 txn

Insider Bradley Mark Christopher

Role Chief Development Officer

Sold 623 shs ($4K)

Share of Position Sold 1.3%

Type	Security	Shares	Price	Value
Sale	Common Stock F1, F2	623	$6.52	$4K
Holding	Common Stock F3	--	--	--
Holding	Common Stock F4	--	--	--

Holdings After Transaction: Common Stock — 47,910 shares (Direct); Common Stock — 40,052 shares (Indirect, By GRAT)

Holdings Before and After: Common Stock, 48,533 to 47,910 shares (Direct)

Other Insiders: 5 other insiders reported open-market sales of this stock in the 30 days up to this filing.

Footnotes (4)

1. F1. The sale reported on this Form 4 was effected pursuant to the Issuer's policy requiring sell-to-cover to satisfy tax obligations of the Reporting Person incurred with the vesting and settlement of restricted stock units granted on July 29, 2025, and does not represent a discretionary sale by the Reporting Person.
2. F2. The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $6.42 to $6.52 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
3. F3. Shares are owned directly by JB 2025 GRAT, for which Reporting Person serves as a trustee. 20,026 shares were transferred from the JB 2023 GRAT on October 30, 2025.
4. F4. Shares are owned directly by MB 2025 GRAT, for which Reporting Person serves as a trustee. 20,026 shares were transferred from the MB 2023 GRAT on October 30, 2025.

Key Figures

Shares sold: 623 shares Weighted average sale price: $6.52 per share Sale price range: $6.42 to $6.52 per share +1 more

4 metrics

Shares sold 623 shares Sale on November 2, 2026

Weighted average sale price $6.52 per share Sale on November 2, 2026

Sale price range $6.42 to $6.52 per share Multiple transactions on November 2, 2026

Direct shares held after sale 47,910 shares Following the sale on November 2, 2026

Key Terms

sell-to-cover, restricted stock units, weighted average sale price

3 terms

sell-to-cover financial

"policy requiring sell-to-cover to satisfy tax obligations"

Sell-to-cover is when part of newly issued or exercised company stock is immediately sold to pay required taxes and fees, so the recipient keeps the remaining shares. For investors this matters because it reduces the number of shares insiders or employees actually hold after a grant, can create small, routine share sales that aren’t signal of cashing out, and slightly increases share supply on the market—like selling a portion of a paycheck to cover the tax bill.

restricted stock units financial

"vesting and settlement of restricted stock units"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

weighted average sale price financial

"reported price in Column 4 is a weighted average sale price"

FAQ

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

How many ALMS shares did Mark Christopher Bradley sell, and at what price?

Mark Christopher Bradley sold 623 shares on November 2, 2026, at a weighted average of $6.52 per share. The shares were sold in multiple transactions priced from $6.42 to $6.52 per share under the issuer’s sell-to-cover policy for tax obligations tied to restricted stock unit vesting and settlement; no Rule 10b5-1 plan is reported.

AI-generated analysis. How Rhea-AI works. Not financial advice.

Form 4 Insider Transactions: What Each Field Means →

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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 CALIFORNIA 94080

(City) (State) (Zip)

UNITED STATES

(Country)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
11/02/2026

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

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

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

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	11/02/2026		S		623(1)	D	$6.52(2)	47,910	D
Common Stock								20,026	I	By GRAT(3)
Common Stock								20,026	I	By GRAT(4)

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

Explanation of Responses:

1. The sale reported on this Form 4 was effected pursuant to the Issuer's policy requiring sell-to-cover to satisfy tax obligations of the Reporting Person incurred with the vesting and settlement of restricted stock units granted on July 29, 2025, and does not represent a discretionary sale by the Reporting Person.

2. The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $6.42 to $6.52 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

3. Shares are owned directly by JB 2025 GRAT, for which Reporting Person serves as a trustee. 20,026 shares were transferred from the JB 2023 GRAT on October 30, 2025.

4. Shares are owned directly by MB 2025 GRAT, for which Reporting Person serves as a trustee. 20,026 shares were transferred from the MB 2023 GRAT on October 30, 2025.

	/s/ Sanam Pangali, Attorney-in-Fact	11/04/2026
	** 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.
* Form 4: SEC 1474 (03-26)