ANNEXON INC (ANNX) Institutional Ownership and Insiders Activity

ANNEXON INC (ANNX) is widely held by institutional investors, with 216 firms reporting positions valued at approximately $1.02B based on SEC Form 13F filings for the quarter ended June 30, 2026.

Fmr Llc is the largest disclosed holder, reporting approximately $111.45M in ANNX holdings in its latest filing.

Recent insider activity includes 1 tracked Form 4 transaction over the last three months, reflecting ongoing executive and director trading activity.