{"url_path":"/sec/annx/proxy/2026-04-27/000114036126017088","section_key":"body","section_title":"DEFA14A body","topic":"sec","document":{"doc_type":"DEFA14A","doc_date":"2026-04-27","source_url":"https://www.sec.gov/Archives/edgar/data/1528115/0001140361-26-017088-index.html","accession_number":"0001140361-26-017088","cik":"0001528115","ticker":"ANNX","issuer_name":"Annexon, Inc.","edgar_url":"https://www.sec.gov/Archives/edgar/data/1528115/0001140361-26-017088-index.html","primary_entity_key":"0001528115","primary_entity_name":"Annexon, Inc."},"word_count":139,"has_tables":true,"body_markdown":"DEFA14A\n1\nny20063060x3_defa14a.htm\nDEFA14A\n\nUNITED STATES\n\nSECURITIES AND EXCHANGE COMMISSION\n\nWashington, D.C. 20549\n\nSCHEDULE 14A\n\n \n\nProxy Statement Pursuant to Section 14(a) of the\n\n(Securities Exchange Act of 1934\n\n(Amendment No.   )\n\nFiled by the Registrant ☒ Filed by a Party other than the Registrant   ☐\n\nCheck the appropriate box:\n\n☐\n\nPreliminary Proxy Statement.\n\n \n \n \n\n ☐\n\nConfidential, for Use of the Commission Only (as\npermitted by Rule 14a-6(e)(2)).\n\n ☐\n\nDefinitive Proxy Statement.\n\n \n \n \n \n\n☒\n\nDefinitive Additional Materials.\n\n \n \n\n ☐\n\nSoliciting Material under § 240.14a-12.\n\n \n\nANNEXON, INC.\n\n(Name of Registrant as Specified in its Charter)\n\n \n\n(Name of Person(s) Filing Proxy Statement, if other than the Registrant)\n\nPayment of Filing Fee (Check all boxes that apply):\n\n \n\n \n\n \n\n \n\n☒\n\nNo fee required.\n\n \n\n ☐\n\nFee paid previously with preliminary materials.\n\n \n\n ☐\n\nFee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11."}