Annexon director granted 65,000 stock options

Annexon, Inc. director William D. Waddill received a grant of stock options covering 65,000 shares of common stock at an exercise price of 4.70 per share.

Rhea-AI Filing Summary

Annexon, Inc. director William D. Waddill received a grant of stock options covering 65,000 shares of common stock at an exercise price of 4.70 per share. These options vest in full on the earlier of the first anniversary of June 11, 2026 or the next Annual Meeting following that date, as long as he continues serving as a director, and expire on June 11, 2036. Following this grant, he holds 65,000 options, reflecting routine equity-based director compensation rather than an open-market trade.

Insider Trade Summary

Grant/Award: 65,000 shares

Grant/Award 1 txn

Insider Waddill William D.

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Stock Option (Right to Buy)	65,000	$0.00	$0.00

Holdings After Transaction: Stock Option (Right to Buy) — 65,000 contracts (Direct)

Footnotes (1)

1. F1. The underlying shares subject to the option vest and become exercisable as to 100% of the total number of shares subject to the option on the earlier of (i) the first anniversary of June 11, 2026 or (ii) the next Annual Meeting following June 11, 2026, subject to Reporting Person's continuous service as a director until such vesting date.

Key Figures

Options granted: 65,000 options Exercise price: 4.70 per share Underlying shares: 65,000 shares +2 more

5 metrics

Options granted 65,000 options Stock Option (Right to Buy) grant to director

Exercise price 4.70 per share Exercise price for the 65,000 options

Underlying shares 65,000 shares Common stock underlying the option grant

Expiration date June 11, 2036 Option expiration

Post-transaction options held 65,000 options Total derivative holdings following the grant

Key Terms

Stock Option (Right to Buy), underlying security, vest and become exercisable, Annual Meeting, +1 more

5 terms

Stock Option (Right to Buy) financial

"security_title: "Stock Option (Right to Buy)""

underlying security financial

"underlying_security_title: "Common Stock" and underlying_security_shares"

vest and become exercisable financial

"The underlying shares subject to the option vest and become exercisable as to 100%"

Annual Meeting financial

"on the earlier of (i) the first anniversary of June 11, 2026 or (ii) the next Annual Meeting"

A company's annual meeting is a yearly gathering where owners (shareholders) and the board review performance, ask questions, and vote on key matters like electing directors, approving auditor choices, and sometimes setting pay or dividend policies. For investors it matters because decisions made and votes cast can change who runs the company, influence strategy and payouts, and affect the value or direction of their investment—similar to a homeowners’ meeting where rules and leaders that shape your property’s value are decided.

continuous service as a director financial

"subject to Reporting Person's continuous service as a director until such vesting date"

FAQ

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

What did Annexon (ANNX) director William D. Waddill report in this Form 4?

Director William D. Waddill reported receiving a grant of stock options for 65,000 shares of Annexon common stock. The options are a compensation award, not an open-market purchase or sale, and give him the right to buy shares at a fixed exercise price.

How many Annexon (ANNX) shares are covered by Waddill’s new stock options?

The option grant covers 65,000 underlying shares of Annexon common stock. This means Waddill can later choose to buy up to 65,000 shares at the stated exercise price if the options vest and are exercised before expiration.

What is the exercise price and expiration date of William D. Waddill’s Annexon options?

The options have an exercise price of 4.70 per share and expire on June 11, 2036. This gives Waddill a long-dated right to purchase Annexon shares at that price once the options vest, subject to standard plan terms.

When do William D. Waddill’s Annexon (ANNX) stock options vest?

The options vest and become exercisable for 100% of the shares on the earlier of the first anniversary of June 11, 2026 or the next Annual Meeting after June 11, 2026. Vesting requires Waddill’s continuous service as a director until that date.

Is William D. Waddill’s Annexon Form 4 a stock purchase or sale?

The Form 4 reports an option grant categorized as a grant, award, or other acquisition, not a market purchase or sale. No shares were bought or sold in the open market; instead, Waddill received derivative securities as part of director compensation.

How many Annexon options does William D. Waddill hold after this transaction?

After the reported transaction, Waddill holds 65,000 stock options directly. These derivative securities give him the right to acquire the same number of Annexon common shares if he chooses to exercise them once they vest and before they expire.

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

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Accepted by SEC EDGAR 06/15/2026 - 04:15 PM EDT 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^*

Waddill William D.

(Last) (First) (Middle)

C/O ANNEXON, INC.

1400 SIERRA POINT PKWY, BLDG C, STE 200

(Street)

BRISBANE CALIFORNIA 94005

(City) (State) (Zip)

UNITED STATES

(Country)

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

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/11/2026

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

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)	$4.7	06/11/2026		A		65,000		(1)	06/11/2036	Common Stock	65,000	$0	65,000	D

Explanation of Responses:

1. The underlying shares subject to the option vest and become exercisable as to 100% of the total number of shares subject to the option on the earlier of (i) the first anniversary of June 11, 2026 or (ii) the next Annual Meeting following June 11, 2026, subject to Reporting Person's continuous service as a director until such vesting date.

	/s/ Jennifer Lew, Attorney-in-Fact	06/15/2026
	** 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)