secwatch.observer — SEC 8-K summary
======================================

Issuer:     ALUMIS INC. (ALMS)
CIK:        0001847367
Form:       8-K
Filed at:   2025-04-21T23:59:59+00:00
Accession:  0001104659-25-036483
Event type: m_and_a
Sentiment:  positive
Materiality: 0.75
Item codes: 1.01, 8.01, 9.01
LLM model:  deepseek-v4-flash:cloud@v2

Alumis and ACELYRIN amend merger terms; ACELYRIN stockholders get 48% ownership of combined company
--------------------------------------------------------------------------------

- Exchange ratio revised to 0.4814 Alumis shares per ACELYRIN share, up from original terms; Alumis stockholders own ~52%, ACELYRIN ~48% fully diluted.
- Special Meeting of Stockholders for both companies scheduled for May 13, 2025; record date April 1, 2025.
- Pro forma cash position of combined company ~$737M as of Dec 31, 2024; runway expected into 2027 for key data readouts.
- Stockholders representing ~62% of Alumis and ~24% of ACELYRIN have entered into voting agreements supporting the transaction.
- Merger expected to close in Q2 2025, subject to stockholder approvals and customary conditions.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/1847367/000110465925036483/0001104659-25-036483-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/1847367/000110465925036483/tm2512707d4_8k.htm
  HTML page:      https://secwatch.observer/filing/0001104659-25-036483

License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer