---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-25-050436"
form_type: "8-K"
ticker: "ALMS"
cik: "0001847367"
company_name: "ALUMIS INC."
filed_at: "2025-05-19T23:59:59+00:00"
generated_at: "2026-05-21T02:08:03.542964+00:00"
event_type: "m_and_a"
sentiment: "positive"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Alumis shareholders approve ACELYRIN merger; expected to close May 21, 2025

## Summary
- Stock issuance proposal approved: 41,861,422 For, 159,077 Against, 1,406 Abstain.
- Adjournment proposal approved: 41,757,390 For, 261,875 Against, 2,640 Abstain.
- Expected closing date May 21, 2025, subject to Nasdaq listing and SEC S-4 effectiveness.
- Record date April 1, 2025; 42,021,905 shares voted (~89% of outstanding).

## SEC filing metadata
- accession: 0001104659-25-050436
- form_type: 8-K
- ticker: ALMS
- cik: 0001847367
- company_name: ALUMIS INC.
- filed_at: 2025-05-19T23:59:59+00:00
- event_type: m_and_a
- sentiment: positive
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 5.07
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1847367/000110465925050436/0001104659-25-050436-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1847367/000110465925050436/tm2515049d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-25-050436
- JSON: https://secwatch.observer/filing/0001104659-25-050436.json
- Plain text: https://secwatch.observer/filing/0001104659-25-050436.txt

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