William H. Carson - 11 May 2026 Form 4 Insider Report for Annexon, Inc. (ANNX)

Reporting relationship: Director
Issuer ticker: ANNX
Reported as of: 11 May 2026
Net transaction value: +$46,240
SEC form: 4
Accepted by SEC: 13 May 2026, 16:30:11 UTC
Prior SEC filing: 14 Apr 2026
Next SEC filing: 15 Jun 2026
Source filing: View source filing
Reporting owner signature: /s/ Jennifer Lew, Attorney-in-Fact

Key filing fact

William H. Carson filed Form 4 for Annexon, Inc. (ANNX) on 13 May 2026.

Key facts

This page summarizes William H. Carson's Form 4 filing for Annexon, Inc. (ANNX).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 13 May 2026, 16:30.

Change

Previous filing in this sequence was filed on 14 Apr 2026.
Current net transaction value: +$46,240.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001824280 Primary reporting owner

Carson William H.

Relationship: Director
Address: C/O ANNEXON, INC., 1400 SIERRA POINT PKWY, BLDG C, STE 200, BRISBANE
Signature: /s/ Jennifer Lew, Attorney-in-Fact
Signature date: 13 May 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

ANNX transaction

Common Stock

Purchase

Transaction value: $46,240
Shares: +8,000
Change %: +11%
Price: $5.78
Shares after: 78,405
Date: 11 May 2026
Ownership: Direct
Footnotes: F1

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 1 footnote

Footnote F1

The transactions reported herein were effected pursuant to the Reporting Person's Rule 10b5-1 trading plan, adopted December 8, 2025.