# Arthur J. Gallagher & Co. Source: https://planprovider.pro/provider/arthur-j-gallagher-and-co > From a headquarters in Rolling Meadows in Chicago’s northwest suburbs, Arthur J. Gallagher & Co. (AJG) combines insurance brokerage and risk management w… Retirement Plan Advisor Rolling Meadows, IL ## About Arthur J. Gallagher & Co.

From a headquarters in Rolling Meadows in Chicago’s northwest suburbs, Arthur J. Gallagher & Co. (AJG) combines insurance brokerage and risk management with retirement plan advisory work for employers.

Founded in 1927, AJG has grown to 51,261 employees and a network of about 1,300 offices worldwide. In its retirement practice, the firm works with plan sponsors on fiduciary support and employee-focused guidance, with 3,000 clients and $0.1B in AUM (2026).

AJG’s retirement team provides both 3(21) and 3(38) fiduciary services, along with plan design and participant advice. This mix can be a fit for organizations that want a single firm to handle fiduciary oversight and day-to-day plan decisions while keeping plan sponsor roles clear.

Website: [https://ajg.com/services/financial-and-retirement-services/](https://ajg.com/services/financial-and-retirement-services/) Founded: 1927 Employees: 51261 ## Office Locations - Rolling Meadows, IL (Headquarters) ## Services Offered - 3(21) Investment Advisor - 3(38) Investment Manager - Participant Investment Advice - Plan Design Consulting ## Client Statistics (2026) - Total Clients: 3,000 - Total AUM: $105.0M ## Plans Serviced (2024) Largest plans where this firm is listed as a service provider (Schedule C) or IQPA (Schedule H) on the most recent filings (From Form 5500). | Plan|Sponsor|Assets|Participants| | IAM NATIONAL PENSION FUND|BOARD OF TRUSTEES OF THE I.A.M. NATIONAL PENSION FUND, DC|$14.7B|102,863| | THE SOUTHERN COMPANY EMPLOYEE SAVINGS PLAN|SOUTHERN COMPANY SERVICES, INC., GA|$9.3B|28,079| | CBRE 401(K) PLAN|CBRE SERVICES, INC., TX|$4.3B|41,038| | MCDONALD'S CORPORATION 401(K) PLAN|MCDONALDS CORPORATION AND SUBSIDIARIES, IL|$3.7B|24,044| | FRANKLIN TEMPLETON 401(K) RETIREMENT PLAN|FRANKLIN RESOURCES, INC., CA|$2.8B|4,383| | NEWYORK-PRESBYTERIAN PENSION PLAN|THE NEW YORK AND PRESBYTERIAN HOSPITAL, NY|$2.5B|19,908| | LOCAL 804 I.B.T. AND LOCAL 447 I.A.M. - UPS MULTI-EMPLOYER RETIREMENT PLAN|BD OF TRUSTEES LOC. 804 & LOC. 447 MULTI-EMPLOYER RET. PLAN, GA|$2.3B|5,733| | DASSAULT SYSTEMES EMPLOYEE SAVINGS PLAN PLUS|DASSAULT SYSTEMES AMERICAS CORP., MA|$2.1B|6,193| | MASON TENDERS' DISTRICT COUNCIL PENSION FUND|BOARD OF TRUSTEES MASON TENDERS DISTRICT COUNCIL PENSION FUND, NY|$1.9B|8,766| | HOGAN LOVELLS US LLP RETIREMENT SAVINGS PLAN|HOGAN LOVELLS US LLP, DC|$1.9B|1,996| | S.E.I.U. NATIONAL INDUSTRY PENSION FUND|BOARD OF TRUSTEES OF THE S.E.I.U. NATIONAL INDUSTRY PENSION FUND, DC|$1.7B|98,200| | SEIU AFFILIATES OFFICERS AND EMPLOYEES PENSION PLAN|BD OF TRUSTEES SEIU AFFILIATES OFFICERS AND EMPLOYEES PENSION PLAN, DC|$1.6B|9,065| | THE NEMOURS FOUNDATION SECTION 403(B) PLAN|THE NEMOURS FOUNDATION, FL|$1.3B|9,806| | ELEVANCE HEALTH CASH BALANCE PLAN A|ATH HOLDING COMPANY LLC, IN|$1.2B|6,807| | THE GENERAL PENSION PLAN OF THE INTERNATIONAL UNION OF OPERATING ENGINEERS|PENSION BD OF THE GENERAL PENSION PLAN OF THE INT'L UNION OF OPERATING, DC|$1.2B|2,198| | ANNUITY FUND OF LOCAL NO. ONE, I. A. T. S. E.|BOARD OF TRUSTEES, ANNUITY FUND OF LOCAL NO. ONE, I.A.T.S.E., NY|$1.2B|21,686| | FIRST HORIZON CORPORATION SAVINGS PLAN|FIRST HORIZON CORPORATION, TN|$1.1B|7,406| | ANYWHERE REAL ESTATE GROUP LLC EMPLOYEE SAVINGS PLAN|ANYWHERE REAL ESTATE GROUP LLC, NJ|$1.0B|7,548| | MUFG BANK, LTD. RETIREMENT PLAN|MUFG BANK, LTD., NY|$1.0B|4,560| | MASON TENDERS DISTRICT COUNCIL ANNUITY FUND|BOARD OF TRUSTEES MASON TENDERS DISTRICT COUNCIL ANNUITY FUND, NY|$932M|11,080| Showing top 20 of 576 plans serviced in 2024. ## Other Retirement Plan Advisors in IL - [Aegis Financial](https://planprovider.pro/provider/aegis-financial) - Phoenix, AZ - [Alera Investment Advisors, LLC](https://planprovider.pro/provider/alera-investment-advisors-llc) - Deerfield, IL - [Assuredpartners Investment Advisors](https://planprovider.pro/provider/assuredpartners-investment-advisors) - Tampa, FL - [Bjork Asset Management](https://planprovider.pro/provider/bjork-asset-management) - Northbrook, IL - [Piershale Financial Group, Inc.](https://planprovider.pro/provider/piershale-financial-group-inc) - Barrington, IL - [Brighton Jones LLC](https://planprovider.pro/provider/brighton-jones-llc) - Seattle, WA - [CGO Financial](https://planprovider.pro/provider/cgo-financial) - Lisle, IL - [Cozad Asset Management INC](https://planprovider.pro/provider/cozad-asset-management-inc) - Champaign, IL - [Savant Wealth Management](https://planprovider.pro/provider/savant-wealth-management) - Rockford, IL - [David Vaughan Investments, LLC](https://planprovider.pro/provider/david-vaughan-investments-llc) - Peoria, IL [View full interactive profile on PlanProvider.Pro](https://planprovider.pro/provider/arthur-j-gallagher-and-co) © 2026 PlanProvider.Pro