Annexon, Inc.

Public companies file this within four business days when something important happens that investors should know about before the next quarterly report.

Annexon, Inc. filed this 8-K to disclose: ) 1400 Sierra Point Parkway , Bldg C , Suite 200 Brisbane , California 94005 (Address of principal executive offices) (Zip Code) Registrant’s telephone number, including area code: (650) 822-5500 Not Applicable (Former name or former address, if changed since last report) Check the appropriate box below if the Form 8-K filing is intended to simultaneously sa…