Annexon (ANNX) EVP Artis sells 5,290 shares to cover RSU taxes

Rhea-AI Filing Summary

Annexon, Inc. executive reports tax-related stock sale

Annexon, Inc. executive Dean Richard Artis, EVP & Chief Scientific Officer, reported an open-market sale of 5,290 shares of common stock at a weighted average price of $5.10 per share. According to the filing, the shares were sold to cover tax withholding obligations arising from the vesting of restricted stock units.

After this transaction, Artis beneficially owns 123,487 shares of Annexon common stock directly. The sale was executed in multiple trades within a price range of $4.925 to $5.155 per share.

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

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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^*

ARTIS DEAN RICHARD

(Last) (First) (Middle)

C/O ANNEXON, INC.

1400 SIERRA POINT PKWY, BLDG C, STE 200

(Street)

BRISBANE CA 94005

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Annexon, Inc. [ ANNX ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP & CHIEF SCIENTIFIC OFFICER

3. Date of Earliest Transaction (Month/Day/Year)
02/18/2026

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
Common Stock	02/18/2026		S(1)		5,290	D	$5.1(2)	123,487	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

Explanation of Responses:

1. The shares were sold to cover tax withholding obligations in connection with the vesting of restricted stock units ("RSUs").

2. This transaction was executed in multiple trades in prices ranging from $4.925 to $5.155, inclusive. The price reported in Column 4 above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide to the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, upon request, full information regarding the number of shares sold at each respective price within the range set forth in this footnote.

	/s/ Jennifer Lew, Attorney-in-Fact	02/20/2026
	** 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.
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FAQ

What insider transaction did Annexon (ANNX) report for Dean Richard Artis?

Annexon reported that EVP & Chief Scientific Officer Dean Richard Artis sold 5,290 shares of common stock. The transaction was an open-market sale primarily to satisfy tax withholding obligations related to the vesting of restricted stock units.

At what price did Dean Richard Artis sell Annexon (ANNX) shares?

Dean Richard Artis sold 5,290 Annexon shares at a weighted average price of $5.10 per share. The filing notes multiple trades executed in a price range from $4.925 to $5.155 per share.

Why did Dean Richard Artis sell Annexon (ANNX) shares in this Form 4?

The filing states the 5,290 shares of Annexon common stock were sold to cover tax withholding obligations triggered by the vesting of restricted stock units, indicating the transaction was tax-related rather than a purely discretionary share sale.

How many Annexon (ANNX) shares does Dean Richard Artis hold after the sale?

Following the reported sale of 5,290 shares, Dean Richard Artis directly holds 123,487 shares of Annexon common stock. This remaining stake reflects his continued equity ownership position as EVP & Chief Scientific Officer.

What role does Dean Richard Artis hold at Annexon (ANNX)?

Dean Richard Artis is Annexon’s Executive Vice President & Chief Scientific Officer. His Form 4 filing details his personal holdings and recent tax-related sale of 5,290 shares of Annexon common stock on the reported transaction date.

How was the Annexon (ANNX) insider sale by Dean Richard Artis executed?

The sale of 5,290 Annexon shares by Dean Richard Artis was executed as an open‑market transaction. The filing notes multiple trades within a price range of $4.925 to $5.155, with a weighted average sale price of $5.10 per share.