Annexon (ANNX)Longaeva Partners L.P. reduced its stake -2.48M shares

620K

Shares reported · -2.48M vs prior quarter

0.13%

Disclosed portfolio weight

$3.44M

Reported value

Holdings as of

Mar 31, 2026

Filed

May 15, 2026

The story around this disclosure

Every dated public record OQRO holds about the company from 60 days before to 120 days after, oldest first. It shows what was going on; none of it is a stated reason for the trade.

1. Mar 30, 2026Company filing · Form 8-K · ResultsReported its results
2. May 7, 2026Company filing · Form 8-K · ResultsReported its results

What came next

1. Jul 30, 2026Company filing · Form 8-K · Material agreement, New debtSigned an important agreement, and took on new debt or obligations (and 1 more item)
2. Aug 10, 2026Company filing · Form 8-K · Executive change, Reg FDChanged a top executive or board member, and shared information with investors“On August 10, 2026, Muneer Satter, a member of the board of directors (the “Board”) of Annexon, Inc. (the “Company”), notified the Company of his resignation as a member of the Board and as a member of the audit committee of the Board (the “Audit Committee”) and as chair of the nominating and corporate governance committee of the Board (the “Nominating Committee”), effective immediately prior to the appointment of a…”
3. Aug 12, 2026Company filing · Form 8-K · Results, Other newsReported its results, and reported other company news

How to read SEC Form 13F-HR

Form 13F is the quarterly report in which investment managers that oversee $100 million or more list the US-listed stocks and some other securities they held on the last day of the quarter.

Full guide: What is an SEC Form 13F?

What else is on file for Annexon

For Annexon, OQRO holds 2 fund holdings reports (13F) dated in the last 90 days.

These are records OQRO holds, counted by their date, not a measure of how much trading took place. Routine paperwork such as option exercises and tax withholding is left out. Everything for the company is on its ANNX page.

How this filing works

• SEC Form 13F

Other disclosures at Annexon

• SEC Form 13F-HRAug 14, 2026
• SEC Form 13F-HRAug 13, 2026
• SEC Form 13F-HRMay 14, 2026
• SEC Form 13F-HRFeb 17, 2026
• SEC Form 4Sep 4, 2025
• SEC Form 4Aug 1, 2025

Everything OQRO holds on this company is on its ANNX page.