Insider plans sale of 2,000 ANNX shares

An individual affiliated with ANNX has filed a notice to sell 2,000 shares of common stock on NASDAQ on 08/13/2026, to be delivered from a same-day stock option exercise for 2,000 shares paid in cash.

Rhea-AI Filing Summary

An individual affiliated with ANNX has filed a notice to sell 2,000 shares of common stock on NASDAQ on 08/13/2026, to be delivered from a same-day stock option exercise for 2,000 shares paid in cash. The filing also lists sales during the prior three months: 1,000 shares of common stock sold on 07/14/2026 for $5,605.00 and 2,000 shares sold on 07/15/2026 for $12,630.00.

Key Figures

Planned shares to be sold: 2,000 shares Aggregate value of planned sale: $10,596.00 Shares from option exercise: 2,000 shares +2 more

5 metrics

Planned shares to be sold 2,000 shares Common stock to be sold on 08/13/2026 on NASDAQ

Aggregate value of planned sale $10,596.00 Listed with 2,000 common shares under securities to be sold

Shares from option exercise 2,000 shares Stock option exercise from issuer on 08/13/2026 for cash

Shares sold on 07/14/2026 1,000 shares Common stock sold by Thomas Wiggans for $5,605.00

Proceeds on 07/15/2026 sale $12,630.00 Sale of 2,000 common shares by Thomas Wiggans

Key Terms

Securities To Be Sold, Stock Option Exercise, Securities Sold During The Past 3 Months

3 terms

Securities To Be Sold regulatory

"144: Securities To Be Sold Common | 08/13/2026 | Stock Option Exercise"

Stock Option Exercise financial

"Common | 08/13/2026 | Stock Option Exercise | Issuer"

A stock option exercise is the act of using a previously granted right to buy shares of a company's stock at a specific, predetermined price by paying that price and receiving the shares. It matters to investors because exercising changes who owns the shares (which can dilute existing ownership), can trigger taxable events and shift potential gains or losses, and affects voting power and the company’s outstanding share count—like turning a voucher into an actual product that becomes part of circulating supply.

Securities Sold During The Past 3 Months regulatory

"144: Securities Sold During The Past 3 Months Thomas Wiggans"

FAQ

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

What does the ANNX Form 144 filing disclose about upcoming stock sales?

It discloses an intention to sell 2,000 shares of ANNX common stock on 08/13/2026 on NASDAQ. These shares will come from a stock option exercise for 2,000 shares paid in cash on the same date.

How many ANNX shares are planned to be sold and through which broker?

The filer plans to sell 2,000 shares of ANNX common stock through Fidelity Brokerage Services LLC. The planned sale, listed under securities to be sold, is scheduled for execution on 08/13/2026 on NASDAQ.

What prior ANNX stock sales are reported in the last three months?

The filing reports two recent ANNX stock sales: 1,000 shares on 07/14/2026 for $5,605.00 and 2,000 shares on 07/15/2026 for $12,630.00, both involving common stock held by Thomas Wiggans.

How are the 2,000 ANNX shares being acquired before sale?

The 2,000 ANNX shares are being acquired via a stock option exercise from the issuer on 08/13/2026. The acquisition is described as a cash transaction, with the same number of shares then listed for potential sale.

What is the aggregate value associated with the planned 2,000-share ANNX sale?

The filing lists an aggregate value of $10,596.00 in connection with the planned sale of 2,000 shares of ANNX common stock. This value appears alongside the share amount and the NASDAQ trading venue information.

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

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Available on EDGAR 08/13/2026 - 03:35 PM Accepted by SEC EDGAR 08/13/2026 - 03:34 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001208907
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Annexon, Inc.
SEC File Number	001-39402
Address of Issuer	1400 SIERRA POINT PARKWAY BLDG C, SUITE 200 BRISBANE CALIFORNIA 94005
Phone	(650) 822-5500
Name of Person for Whose Account the Securities are To Be Sold	WIGGANS THOMAS G
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Former Director

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	2000	10596.00	189579134	08/13/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	08/13/2026	Stock Option Exercise	Issuer			2000	08/13/2026	Cash

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Thomas Wiggans 1400 Sierra Point Parkway Bldg C, Suite 200 Brisbane CA 94005	Common	07/14/2026	1000	5605.00
Thomas Wiggans 1400 Sierra Point Parkway Bldg C, Suite 200 Brisbane CA 94005	Common	07/15/2026	2000	12630.00

144: Remarks and Signature

Remarks
Date of Notice	08/13/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Joshua Schmitt, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Thomas Wiggans.
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)