secwatch.observer — SEC 8-K summary
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Issuer:     Sionna Therapeutics, Inc. (SION)
CIK:        0002036042
Form:       8-K
Filed at:   2026-06-18T20:05:31+00:00
Accession:  0001628280-26-044263
Event type: other
Sentiment:  neutral
Materiality: 0.10
Item codes: 5.07
LLM model:  deepseek-v4-flash:cloud@v2

Sionna Therapeutics annual meeting results: all director nominees elected, auditor ratified
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- Four Class II directors elected: H. Edward Fleming, Marcella Kuhlman Ruddy, Peter A. Thompson, Joanne Louise Viney.
- Ratification of Deloitte & Touche LLP as independent auditor for FY 2026 approved with 43,291,215 votes for.
- Meeting held June 17, 2026; 45,142,330 shares outstanding as of record date April 21, 2026.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/2036042/000162828026044263/0001628280-26-044263-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/2036042/000162828026044263/sion-20260617.htm
  HTML page:      https://secwatch.observer/filing/0001628280-26-044263

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