secwatch.observer — SEC 8-K summary
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Issuer:     ACELYRIN, Inc. (—)
CIK:        0001962918
Form:       8-K
Filed at:   2025-05-21T23:59:59+00:00
Accession:  0001193125-25-123707
Event type: m_and_a
Sentiment:  neutral
Materiality: 1.00
Item codes: 1.02, 2.01, 3.01, 5.01, 5.02, 5.03, 3.03, 9.01
LLM model:  deepseek-v4-flash:cloud@v2

ACELYRIN completes merger with Alumis, becomes wholly owned subsidiary; stock to be delisted
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- Merger effective May 21, 2025; each SLRN share converted into 0.4814 shares of Alumis common stock.
- ACELYRIN requests Nasdaq delisting and intends to deregister shares under Exchange Act.
- All ACELYRIN directors and executive officers resigned; replaced by Merger Sub's directors and officers.
- Certificate of incorporation and bylaws amended and restated to those of Merger Sub.
- Outstanding equity awards converted to Alumis awards; options with exercise price >$18.00 cancelled.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/1962918/000119312525123707/0001193125-25-123707-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/1962918/000119312525123707/d13977d8k.htm
  HTML page:      https://secwatch.observer/filing/0001193125-25-123707

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