---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-23-264115"
form_type: "8-K"
ticker: "AJG"
cik: "0000354190"
company_name: "Arthur J. Gallagher & Co."
filed_at: "2023-10-26T23:59:59+00:00"
generated_at: "2026-06-09T09:02:38.576063+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Arthur J. Gallagher Q3 adjusted EPS $2.00, revenue $2.45B, organic growth 10.5%; new President and COO named

## Summary
- Q3 adjusted net earnings $442.8M ($2.00 per share) vs $363.1M ($1.68) a year ago.
- Total revenue $2.45B, up 22% reported; organic revenue growth 10.5% (brokerage 9.3%, risk mgmt 17.9%).
- Brokerage segment closed 12 mergers with ~$57M estimated annualized revenue in the quarter.
- Thomas J. Gallagher appointed President, Patrick M. Gallagher appointed COO, effective Jan 1, 2024; J. Patrick Gallagher remains Chairman & CEO.

## SEC filing metadata
- accession: 0001193125-23-264115
- form_type: 8-K
- ticker: AJG
- cik: 0000354190
- company_name: Arthur J. Gallagher & Co.
- filed_at: 2023-10-26T23:59:59+00:00
- event_type: earnings
- sentiment: positive
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 2.02, 5.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/354190/000119312523264115/0001193125-23-264115-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/354190/000119312523264115/d538669d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-23-264115
- JSON: https://secwatch.observer/filing/0001193125-23-264115.json
- Plain text: https://secwatch.observer/filing/0001193125-23-264115.txt

## Key facts
- Earnings Releases
  Arthur J. Gallagher & Co. reported the quarter ended September 30, 2023 results: EPS $1.28.
  - Period: the quarter ended September 30, 2023
  - EPS: $1.28
  - Result: reported results
  source text: Arthur J. Gallagher & Co. (NYSE: AJG) today reported its financial results for the quarter ended September 30, 2023.
  evidence_url: https://www.sec.gov/Archives/edgar/data/354190/000119312523264115/0001193125-23-264115-index.htm
- Executive change
  Thomas J. Gallagher was appointed as President at Arthur J. Gallagher & Co..
  - Action: appointed
  - Role: President
  source text: On October 24, 2023, the Board of Directors (the Board) of the Company appointed Thomas J. Gallagher as President, succeeding J. Patrick Gallagher, Jr. in such role.
  evidence_url: https://www.sec.gov/Archives/edgar/data/354190/000119312523264115/0001193125-23-264115-index.htm
- Executive change
  J. Patrick Gallagher, Jr. changed role as Chairman of the Board and Chief Executive Officer at Arthur J. Gallagher & Co..
  - Role: Chairman of the Board and Chief Executive Officer
  source text: On October 24, 2023, the Board of Directors (the Board) of the Company appointed Thomas J. Gallagher as President, succeeding J. Patrick Gallagher, Jr. in such role.
  evidence_url: https://www.sec.gov/Archives/edgar/data/354190/000119312523264115/0001193125-23-264115-index.htm
- Executive change
  Patrick M. Gallagher was appointed as Chief Operating Officer at Arthur J. Gallagher & Co..
  - Action: appointed
  - Role: Chief Operating Officer
  source text: In addition, the Board appointed Patrick M. Gallagher as Chief Operating Officer.
  evidence_url: https://www.sec.gov/Archives/edgar/data/354190/000119312523264115/0001193125-23-264115-index.htm

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