secwatch.observer — SEC 8-K summary
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Issuer:     Arthur J. Gallagher & Co. (AJG)
CIK:        0000354190
Form:       8-K
Filed at:   2026-07-29T12:12:35+00:00
Accession:  0000354190-26-000184
Event type: leadership
Sentiment:  negative
Materiality: 0.40
Item codes: 8.01, 9.01
LLM model:  deepseek-v4-flash:cloud@v2

Arthur J. Gallagher & Co. Announces Passing of Lead Independent Director David Johnson
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- David Johnson, Lead Independent Director, passed away on July 22, 2026.
- Board reduced its size from nine to eight members following Mr. Johnson's death.
- Ralph Nicoletti elected as new Lead Independent Director, effective immediately.
- John Coldman appointed to the Compensation and Nominating/Governance Committees.
- Press release dated July 29, 2026, announced the passing and board changes.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/354190/000035419026000184/0000354190-26-000184-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/354190/000035419026000184/ajg-20260722.htm
  HTML page:      https://secwatch.observer/filing/0000354190-26-000184

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