---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-26-345672"
form_type: "8-K"
ticker: "ANNX"
cik: "0001528115"
company_name: "Annexon, Inc."
filed_at: "2026-08-12T10:30:26+00:00"
generated_at: "2026-08-12T10:35:10.214452+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Annexon Q2 net loss $55.3M; BLA for tanruprubart on track for Q4 2026

## Summary
- Q2 net loss $55.3M ($0.28/share) vs $49.2M ($0.34) year ago; R&D $46.6M, G&A $10.6M.
- Cash $209.2M plus $200M credit facility ($50M drawn) extends runway into 2028.
- Tanruprubart BLA submission for GBS expected Q4 2026; EU MAA under review.
- Vonaprument Phase 3 ARCHER II adds Month 24 dual primary endpoint; Month 15 data on track Q4 2026.
- ANX1502 POC data in CAD expected Fall 2026; Mark Blumenkranz appointed to board.

## SEC filing metadata
- accession: 0001193125-26-345672
- form_type: 8-K
- ticker: ANNX
- cik: 0001528115
- company_name: Annexon, Inc.
- filed_at: 2026-08-12T10:30:26+00:00
- event_type: earnings
- sentiment: positive
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 2.02, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1528115/000119312526345672/0001193125-26-345672-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1528115/000119312526345672/d119960d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-26-345672
- JSON: https://secwatch.observer/filing/0001193125-26-345672.json
- Plain text: https://secwatch.observer/filing/0001193125-26-345672.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.