Annexon, Inc.

ANNX·NASDAQ·$5.52Share Price as of 11/2·$660MMarket Cap as of 11/2

Financials

10-QQ2 ended 06/30/2608/12/26 10-QQ1 ended 03/31/2605/07/26 10-KFY 202503/30/26 10-QQ3 ended 09/30/2511/10/25 10-QQ2 ended 06/30/2508/14/25

Disclosures

8-KCurrent report08/12/26 8-KCurrent report08/10/26 8-KCurrent report08/06/26 8-KCurrent report07/30/26 8-KCurrent report06/12/26

Prospectuses and Registrations

S-3ASRAutomatic shelf registration03/31/26 S-8Registration of securities for employees03/31/26 424B5Prospectus supplement11/13/25 424B5Prospectus supplement11/12/25 S-8Registration of securities for employees03/03/25

Proxies

DEF 14ADefinitive proxy04/27/26 DEFA14AAdditional proxy materials04/27/26 PRE 14APreliminary proxy04/16/26 DEF 14ADefinitive proxy04/23/25 DEFA14AAdditional proxy materials04/23/25

Ownership

Form 4Insider transaction09/25/26 144Proposed sale of securities08/13/26 Form 3Initial insider ownership08/12/26 Form 4Insider transaction08/12/26 144Proposed sale of securities07/15/26

Other

ARSAnnual report to shareholders04/27/26 ARSAnnual report to shareholders04/23/25 EFFECTRequest for effectiveness08/15/24 CORRESPCorrespondence with the SEC08/13/24 UPLOADLetter from the SEC08/13/24