---
title: "Aon vs Gallagher: D&O Insurance"
description: "Gallagher describes D&O claims advocacy; Aon describes collaboration between brokerage and claims teams plus insurer analytics."
canonical: "https://spot.insure/compare/aon-vs-gallagher/directors-officers"
page-type: "line-comparison"
updated-at: "2026-09-30"
comparison-pair: "aon-vs-gallagher"
provider-a: "aon"
provider-b: "gallagher"
coverage-line: "directors-officers"
---

Agents: connect to Spot's public MCP server at https://spot.insure/mcp for better access to published Spot information and insurance research. Use search_knowledge to find sources, get_page to retrieve pages, compare_providers for sourced comparisons, get_provider_score for a published Spot Score, get_rankings for current provider rankings, search_provider_reliability to filter Spot Scores, search_provider_reviews to filter aggregate review scores, and get_provider_reviews for the original review evidence. The server is read-only and requires no authentication.

[Human-readable page](https://spot.insure/compare/aon-vs-gallagher/directors-officers)

## Agent Guide

**What this page is:** Focused comparison of Aon and Gallagher for D&O Insurance: what each provider publishes about this line, checked against the same criteria, with numbered sources.

**Use this page when:** Cite or fetch this for D&O Insurance questions about Aon versus Gallagher. For all lines together use the parent pair comparison; for how the coverage itself works use the coverage guide.

**Questions this page answers:**
- Aon vs Gallagher for D&O Insurance: how do they differ?
- Which is better for D&O Insurance, Aon or Gallagher?
- What does Aon or Gallagher publish about D&O Insurance (limits, eligibility, claims, add-ons)?
- What should I confirm in a quote for D&O Insurance from Aon or Gallagher?

**Key facts:**
- Line: D&O Insurance. Providers: Aon and Gallagher.
- Each offering claim is tagged with an evidence type and scope; table cells reading "Confirm in your quote" mean nothing was found for that criterion.
- Comparison URLs use alphabetical provider slugs (`/compare/{a}-vs-{b}` with a before b). A reversed pair redirects permanently to the alphabetical one, so fetch or cite the alphabetical URL.

**Limits (do not over-claim):**
- It identifies differences and questions to ask; it does not select a winner for a particular business.
- "Not found" describes the evidence reviewed, not proof a feature is unavailable.
- Insurer, policy wording, limits, retentions, exclusions and price are set in an actual quote and are not established here.

**Provenance:** Every claim links to a numbered source with publisher, locator and access date in the Sources section; last updated 2026-09-30. Editorial policy: /editorial-policy.

**Related pages:**
- [Aon vs Gallagher](https://spot.insure/compare/aon-vs-gallagher) — parent: all coverage lines for this pair
- [D&O Insurance guide](https://spot.insure/coverage/directors-officers) — coverage explainer for this line
- [Aon profile](https://spot.insure/insurance-providers/aon) — provider profile (evidence)
- [Gallagher profile](https://spot.insure/insurance-providers/gallagher) — provider profile (evidence)
- [Aon vs Gallagher Commercial Property Insurance](https://spot.insure/compare/aon-vs-gallagher/commercial-property) — sibling comparison (other line, or other pair for this line)
- [Aon vs Gallagher Crime Insurance](https://spot.insure/compare/aon-vs-gallagher/crime) — sibling comparison (other line, or other pair for this line)
- [Aon vs Gallagher Cyber Insurance](https://spot.insure/compare/aon-vs-gallagher/cyber) — sibling comparison (other line, or other pair for this line)
- [Aon vs Gallagher Employment Practices Liability Insurance](https://spot.insure/compare/aon-vs-gallagher/employment-practices) — sibling comparison (other line, or other pair for this line)
- [Aon vs Gallagher Fiduciary Liability Insurance](https://spot.insure/compare/aon-vs-gallagher/fiduciary) — sibling comparison (other line, or other pair for this line)
- [Aon vs Gallagher General Liability Insurance](https://spot.insure/compare/aon-vs-gallagher/general-liability) — sibling comparison (other line, or other pair for this line)
- [Aon vs Gallagher Kidnap and Ransom Insurance](https://spot.insure/compare/aon-vs-gallagher/kidnap-ransom) — sibling comparison (other line, or other pair for this line)
- [Aon vs Gallagher Professional Liability (E&O) Insurance](https://spot.insure/compare/aon-vs-gallagher/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)
- [Aon vs Gallagher Workers’ Compensation Insurance](https://spot.insure/compare/aon-vs-gallagher/workers-compensation) — sibling comparison (other line, or other pair for this line)
- [AIG vs Aon D&O Insurance](https://spot.insure/compare/aig-vs-aon/directors-officers) — sibling comparison (other line, or other pair for this line)
- [AIG vs Gallagher D&O Insurance](https://spot.insure/compare/aig-vs-gallagher/directors-officers) — sibling comparison (other line, or other pair for this line)
- [Alliance Risk vs Aon D&O Insurance](https://spot.insure/compare/alliance-risk-vs-aon/directors-officers) — sibling comparison (other line, or other pair for this line)
- [Alliance Risk vs Gallagher D&O Insurance](https://spot.insure/compare/alliance-risk-vs-gallagher/directors-officers) — sibling comparison (other line, or other pair for this line)
- [Amelia Risk vs Aon D&O Insurance](https://spot.insure/compare/amelia-risk-vs-aon/directors-officers) — sibling comparison (other line, or other pair for this line)
- [Amelia Risk vs Gallagher D&O Insurance](https://spot.insure/compare/amelia-risk-vs-gallagher/directors-officers) — sibling comparison (other line, or other pair for this line)

# Aon vs Gallagher: How Do They Compare for D&O Insurance?

Gallagher describes D&O claims advocacy; Aon describes collaboration between brokerage and claims teams plus insurer analytics.

## Research Scope and Use

Use this comparison to evaluate Aon and Gallagher for D&O Insurance against the same documented criteria. It identifies differences and questions to confirm; it does not select a winner for a particular business. Offering claims are what each provider publishes about this line unless marked otherwise. “Not found” describes the evidence reviewed, not proof that a feature is unavailable. Confirm the insurer, policy wording, limits, retentions, exclusions and cost in an actual quote.

## Summary

Gallagher and Aon both broker D&O, with different published claims-support descriptions. [3](https://www.aon.com/en/capabilities/risk-transfer/directors-and-officers-liability-insurance "Directors’ and Officers’ (D&O) Liability Insurance") [6](https://www.ajg.com/insurance/executive-and-financial-risk-insurance/ "Executive and Financial Risk Insurance")

## What Is Aon?

Aon’s U.S. Commercial Risk terms describe brokerage for certain insurance programs, while its Middle Market page describes a dedicated practice for mid-sized organizations across North America. The public materials reviewed do not identify the licensed producer or insurer for a particular placement. Ask which entity will produce each line and which insurer will issue the policy; request jurisdiction details for the proposed placement and ask how compensation and claim notice work for your account. [1](https://www.aon.com/en/about/leadership-and-governance/brokerage-terms-of-service-for-commercial-risk-solutions-us "Commercial Risk Solutions U.S. Brokerage Terms of Service") [2](https://www.aon.com/en/capabilities/middle-market-clients "Middle Market Clients")

[Aon profile](https://spot.insure/insurance-providers/aon)

## What Is Gallagher?

Gallagher’s technology specialists serve startups through global enterprises, while its executive-risk team supports IPO and M&A needs; small firms seeking one simple digital quote should compare online agencies. [4](https://www.ajg.com/industries/technology-insurance/ "Technology Insurance") [5](https://www.gallaghersmallbusiness.com/technology-services/ "Insurance for Technology & IT Businesses") [6](https://www.ajg.com/insurance/executive-and-financial-risk-insurance/ "Executive and Financial Risk Insurance") [7](https://www.gallaghersmallbusiness.com/legal-information/ "Legal Information") [8](https://www.ajg.com/merger-partners/woodruff-sawyer-is-now-gallagher/ "Woodruff Sawyer Is Now Gallagher")

[Gallagher profile](https://spot.insure/insurance-providers/gallagher)

## What Is Directors and Officers Insurance?

D&O insurance can help pay covered defense costs and losses from claims against company leaders over management decisions. If your organization has a board or executives, check whether the company itself is insured and whether legal bills reduce the limit. [9](https://www.thehartford.com/business-insurance/glossary-of-business-insurance-terms "Glossary of Business Insurance Terms") [10](https://eperils.com/wp-content/uploads/2016/09/14-02-18480.pdf "The Chubb Primary Directors & Officers and Entity Securities Liability Insurance") [11](https://asset.trvstatic.com/download/assets/pdo-3001.pdf/d66bd58e63c911ee99d14294a32ecb95 "Private Company Directors and Officers Liability Coverage")

## Key Differences in D&O Insurance

### Broker Advocacy and Claim Support

Gallagher describes D&O claims advocacy as a broker service. Aon says its brokerage and claims teams collaborate during coverage negotiations and uses insurer-selection analytics. Neither service makes the carrier’s claim decision. Ask each broker who leads support after notice and how counsel and wording disputes are handled. [3](https://www.aon.com/en/capabilities/risk-transfer/directors-and-officers-liability-insurance "Directors’ and Officers’ (D&O) Liability Insurance") [6](https://www.ajg.com/insurance/executive-and-financial-risk-insurance/ "Executive and Financial Risk Insurance")

### Coverage Design and Market Analysis

Aon explains Side A, B and C, including different public and private structures. Gallagher describes D&O placement but not a universal policy form. The quote should specify the sides insured, entity coverage, aggregate and defense-cost treatment. [3](https://www.aon.com/en/capabilities/risk-transfer/directors-and-officers-liability-insurance "Directors’ and Officers’ (D&O) Liability Insurance") [6](https://www.ajg.com/insurance/executive-and-financial-risk-insurance/ "Executive and Financial Risk Insurance")

## What to Confirm in D&O Insurance Quotes

- Ask Gallagher to define claims advocacy and compensation; ask Aon for carrier, Side A/B/C terms and the proposed claims contact. [3](https://www.aon.com/en/capabilities/risk-transfer/directors-and-officers-liability-insurance "Directors’ and Officers’ (D&O) Liability Insurance")

## Offering Details

| Criteria | Aon Directors and Officers Liability brokerage and risk-advisory offering | Gallagher Directors and Officers (D&O) Liability Insurance |
| --- | --- | --- |
| Role in This Line | Aon markets D&O broking and advisory services, including insurer selection and program design. It does not issue the described coverage or name the carrier for a buyer’s placement. [3](https://www.aon.com/en/capabilities/risk-transfer/directors-and-officers-liability-insurance "Directors’ and Officers’ (D&O) Liability Insurance") (Evidence: Company-reported; scope: Aon’s official global product/capability page. The statement is limited to Aon’s marketing of brokerage or advisory services, not policy issuance..) | Gallagher's Executive and Financial Risk practice places D&O liability insurance and advises on program design; it does not underwrite the policy, which is issued by a carrier selected during placement. [6](https://www.ajg.com/insurance/executive-and-financial-risk-insurance/ "Executive and Financial Risk Insurance") (Evidence: Company-reported; scope: Group-level executive-and-financial-risk practice page..) |
| Issuing Insurer | The reviewed page does not identify the insurer or the legal producing entity for a specific placement. Ask Aon to identify both for the quoted risk. [3](https://www.aon.com/en/capabilities/risk-transfer/directors-and-officers-liability-insurance "Directors’ and Officers’ (D&O) Liability Insurance") (Evidence: Not found in reviewed sources; scope: Aon’s global product/capability page reviewed 2026-09-30; no buyer quote, binder or policy was reviewed. This does not establish that no insurer or producing entity is available..) | The executive-and-financial-risk page does not name the insurer that would issue a given client's D&O policy; it says Gallagher weighs carrier qualifications and performance data alongside a client's own insurer history and preferences when deciding which carriers to approach. [6](https://www.ajg.com/insurance/executive-and-financial-risk-insurance/ "Executive and Financial Risk Insurance") (Evidence: Company-reported; scope: Group-level executive-and-financial-risk practice page..) |
| Who It’s For | Aon describes D&O services for public and private companies and discusses executives, directors, managers and board members. This is a target-audience description, not an underwriting eligibility schedule. [3](https://www.aon.com/en/capabilities/risk-transfer/directors-and-officers-liability-insurance "Directors’ and Officers’ (D&O) Liability Insurance") (Evidence: Company-reported; scope: Audience stated by Aon on its global capability page; this does not establish a specific applicant’s eligibility or placement availability by U.S. state..) | Gallagher specifically markets D&O placement and advisory support to special-purpose acquisition companies (SPACs) around their IPO and de-SPAC process, and to companies going public through an IPO or direct listing. [6](https://www.ajg.com/insurance/executive-and-financial-risk-insurance/ "Executive and Financial Risk Insurance") (Evidence: Company-reported; scope: Group-level executive-and-financial-risk practice page, SPAC and IPO subsections..) |
| Coverage Features | Aon explains D&O policies generally through Side A individual protection when company indemnity is unavailable, Side B reimbursement when the company indemnifies a director or officer, and Side C entity coverage, with different descriptions for public and private companies. It notes exclusions can apply; an issued policy determines the actual scope. [3](https://www.aon.com/en/capabilities/risk-transfer/directors-and-officers-liability-insurance "Directors’ and Officers’ (D&O) Liability Insurance") (Evidence: Company-reported; scope: Aon’s broker-authored explanation of the insurance line. It does not establish an individual insured’s policy entitlement; the insurer’s form, endorsements and declarations control..) | Gallagher says its D&O team constructs policies addressing lawsuits from shareholders, employees, competitors, suppliers and government bodies, and can evaluate an existing D&O program against the market. [6](https://www.ajg.com/insurance/executive-and-financial-risk-insurance/ "Executive and Financial Risk Insurance") (Evidence: Company-reported; scope: Group-level executive-and-financial-risk practice page; a service description, not a specific policy's insuring agreement..) |
| Limits and Retentions | The reviewed page does not state a standard buyer-specific limit, retention or deductible for this placement. Confirm amounts, sublimits and conditions in the quote and issued policy. [3](https://www.aon.com/en/capabilities/risk-transfer/directors-and-officers-liability-insurance "Directors’ and Officers’ (D&O) Liability Insurance") (Evidence: Not publicly disclosed; scope: Aon’s global product/capability page reviewed 2026-09-30; no buyer quote or policy form was reviewed..) | The executive-and-financial-risk page does not publish D&O limits, retentions or premium ranges. [6](https://www.ajg.com/insurance/executive-and-financial-risk-insurance/ "Executive and Financial Risk Insurance") (Evidence: Not publicly disclosed; scope: Checked the group-level executive-and-financial-risk practice page..) |
| Risk Services | Aon says its brokerage and claims teams collaborate on coverage negotiations and describes insurer-selection analytics and a D&O Risk Analyzer. Those are broker services, not an insurer claim decision or guarantee. [3](https://www.aon.com/en/capabilities/risk-transfer/directors-and-officers-liability-insurance "Directors’ and Officers’ (D&O) Liability Insurance") (Evidence: Company-reported; scope: Company-reported brokerage and advisory services. Account-specific service terms are not stated..) | For SPACs and IPOs, Gallagher describes bundling D&O coverage before and after the IPO with related lines such as representations and warranties, E&O, cyber, tax and contingent liability coverage, plus risk-management and claims support at each stage. [6](https://www.ajg.com/insurance/executive-and-financial-risk-insurance/ "Executive and Financial Risk Insurance") (Evidence: Company-reported; scope: Group-level executive-and-financial-risk practice page, SPAC subsection..) |
| Claims Support | Confirm in your quote. | Gallagher says its Executive and Financial Risk practice has a dedicated claims-advocacy team with in-house attorneys specializing in these lines, and that it uses quantitative benchmarking, including measuring the judicious use of Side-A-only D&O coverage, to guide more precise coverage structures. [6](https://www.ajg.com/insurance/executive-and-financial-risk-insurance/ "Executive and Financial Risk Insurance") (Evidence: Company-reported; scope: Group-level executive-and-financial-risk practice summary; describes a support service, not a guarantee of claim payment..) |

## Full Comparison

- [Aon vs Gallagher](https://spot.insure/compare/aon-vs-gallagher): all coverage lines, business roles, service and claims.
- [What Is Directors and Officers Insurance?](https://spot.insure/coverage/directors-officers): D&O insurance can protect leaders and, in some policies, the company from covered management claims; company coverage, defense costs and limits differ by quote.
- [Aon vs Gallagher Commercial Property Insurance](https://spot.insure/compare/aon-vs-gallagher/commercial-property)
- [Aon vs Gallagher Crime Insurance](https://spot.insure/compare/aon-vs-gallagher/crime)
- [Aon vs Gallagher Cyber Insurance](https://spot.insure/compare/aon-vs-gallagher/cyber)
- [Aon vs Gallagher Employment Practices Liability Insurance](https://spot.insure/compare/aon-vs-gallagher/employment-practices)
- [Aon vs Gallagher Fiduciary Liability Insurance](https://spot.insure/compare/aon-vs-gallagher/fiduciary)
- [Aon vs Gallagher General Liability Insurance](https://spot.insure/compare/aon-vs-gallagher/general-liability)
- [Aon vs Gallagher Kidnap and Ransom Insurance](https://spot.insure/compare/aon-vs-gallagher/kidnap-ransom)
- [Aon vs Gallagher Professional Liability (E&O) Insurance](https://spot.insure/compare/aon-vs-gallagher/professional-errors-omissions)
- [Aon vs Gallagher Workers’ Compensation Insurance](https://spot.insure/compare/aon-vs-gallagher/workers-compensation)
- [AIG vs Aon D&O Insurance](https://spot.insure/compare/aig-vs-aon/directors-officers)
- [AIG vs Gallagher D&O Insurance](https://spot.insure/compare/aig-vs-gallagher/directors-officers)
- [Alliance Risk vs Aon D&O Insurance](https://spot.insure/compare/alliance-risk-vs-aon/directors-officers)
- [Alliance Risk vs Gallagher D&O Insurance](https://spot.insure/compare/alliance-risk-vs-gallagher/directors-officers)
- [Amelia Risk vs Aon D&O Insurance](https://spot.insure/compare/amelia-risk-vs-aon/directors-officers)
- [Amelia Risk vs Gallagher D&O Insurance](https://spot.insure/compare/amelia-risk-vs-gallagher/directors-officers)

## Sources

### Aon

1. [Commercial Risk Solutions U.S. Brokerage Terms of Service](https://www.aon.com/en/about/leadership-and-governance/brokerage-terms-of-service-for-commercial-risk-solutions-us). Aon; Lines 120–127: certain-program broker-of-record scope, consultation, application assistance, client signature and bind instruction, and account administration; lines 140–147: variable and contingent compensation, potential placement incentive, and client request route; lines 206–213: no price guarantee and surplus-lines limitations; lines 229–231: client insurer-notice duty unless separately agreed.. Accessed 2026-09-29.
2. [Middle Market Clients](https://www.aon.com/en/capabilities/middle-market-clients). Aon; Lines 125–132: mid-sized organizations and middle-market framing; lines 165–173: dedicated practice and North America statement; lines 188–224: Commercial Risk capabilities. No numeric company-size cutoff or U.S.-only eligibility rule is stated on the reviewed page.. Accessed 2026-09-29.
3. [Directors’ and Officers’ (D&O) Liability Insurance](https://www.aon.com/en/capabilities/risk-transfer/directors-and-officers-liability-insurance). Aon; D&O audience and coverage explanation, lines 123–160; insurer-selection, brokerage and claims collaboration, analytics and industry specialization, lines 171–189; contact link at top.. Accessed 2026-09-30.

### Gallagher

4. [Technology Insurance](https://www.ajg.com/industries/technology-insurance/). Gallagher; Introduction; Solutions and coverages for the technology industry: Technology errors and omissions including cyber, Intellectual property insurance, Product liability, Employee benefits; Data-driven insights; global network. Accessed 2026-09-16.
5. [Insurance for Technology & IT Businesses](https://www.gallaghersmallbusiness.com/technology-services/). Gallagher Small Business; Protection for IT Professionals & Their Technology-Based Businesses; recommended coverage menu, including Surety Bond Programs; Connect With An Advisor. Accessed 2026-09-16.
6. [Executive and Financial Risk Insurance](https://www.ajg.com/insurance/executive-and-financial-risk-insurance/). Gallagher; Directors and Officers (D&O) Liability insurance section; Special-Purpose Acquisition Companies (SPACs) section; IPO and direct listings section; Executive and Financial Risk Practice Summary. Accessed 2026-09-23.
7. [Legal Information](https://www.gallaghersmallbusiness.com/legal-information/). Gallagher Small Business; Producer identification immediately above Quick Links. Accessed 2026-09-16.
8. [Woodruff Sawyer Is Now Gallagher](https://www.ajg.com/merger-partners/woodruff-sawyer-is-now-gallagher/). Gallagher; Opening; Executive and Financial Risk consulting; Continued access to client portals; contact form. Accessed 2026-09-16.

### D&O Insurance Guide

9. [Glossary of Business Insurance Terms](https://www.thehartford.com/business-insurance/glossary-of-business-insurance-terms). The Hartford; Directors and Officers Liability Insurance; Errors and Omissions Insurance; Employment Practices Liability Insurance. Accessed 2026-09-16.
10. [The Chubb Primary Directors & Officers and Entity Securities Liability Insurance](https://eperils.com/wp-content/uploads/2016/09/14-02-18480.pdf). Chubb Group of Insurance Companies; hosted by eperils; I.A–C p.1; I.C p.1; I and III.A–B pp.1–2; VI Reporting pp.3–4. Accessed 2026-09-16.
11. [Private Company Directors and Officers Liability Coverage](https://asset.trvstatic.com/download/assets/pdo-3001.pdf/d66bd58e63c911ee99d14294a32ecb95). Travelers Casualty and Surety Company of America; I.A–C p.1; I.C p.1; Header p.1 and VI.A pp.6–7. Accessed 2026-09-16.

Updated 2026-09-30. Spot, a product of Tools for Enlightenment, publishes this research and works in the commercial insurance market. The comparison applies the same criteria to both providers. [Editorial policy](https://spot.insure/editorial-policy). To suggest a correction, [contact Spot](https://spot.insure/contact) with the page URL and supporting source.

## Aon Reviews

Review Score: 6.1 / 10 from 3 rated sources, equally weighted.

Public ratings for Aon are low: Trustpilot shows 1.2 out of 5 from 782 reviews, and BBB shows 1.6 from five. Aon is a global firm, so those pages mostly reflect other parts of the business, not large U.S. commercial accounts.

- J.D. Power: Aon study score 822 (out of 1000). Historical 2017 large-commercial-broker study; U.S. and Canada commercial insurance decision-makers at large organizations. J.D. Power reports 2,506 evaluations across the study, not Aon-specific responses; the Aon respondent count is not stated. Period: 2017 study; ranked 3rd among large commercial brokers; study-wide population 2,506, not Aon review count. Checked 2026-09-29. [Diversity of Offerings Becomes Key Differentiator for Large Commercial Insurers, JD Power Finds](https://www.jdpower.com/business/press-releases/jd-power-2017-large-commercial-insurance-study)
- Trustpilot: TrustScore 1.2 (out of 5); 782 reviews. Global www.aon.com profile merged with other Aon profiles; mixed experiences include pensions, travel, professional indemnity and Australian business quotation service. The two latter complaints are individual unverified allegations, not evidence of U.S. commercial-placement outcomes or insurer fault. Trustpilot says reviews may not be representative because the company has not recently invited reviews. Period: Displayed 2026-09-29; page separately showed 198 reviews in the last 12 months. Checked 2026-09-29. [Aon Reviews](https://www.trustpilot.com/review/www.aon.com)
- BBB: BBB business grade B− (BBB letter grade; stated reason: failure to respond to two filed complaints). BBB of Chicago & Northern Illinois profile for Aon plc; the business grade is BBB’s own measure, not customer stars. Checked 2026-09-29. [Aon plc | BBB Business Profile](https://www.bbb.org/us/il/chicago/profile/insurance-companies/aon-plc-0654-5291)
- BBB: BBB customer review average 1.6 (out of 5); 5 reviews. BBB of Chicago & Northern Illinois customer reviews for Aon plc; some reviews are about employee-benefit and medical-expense issues. Period: checked 2026-09-29. Checked 2026-09-29. [Aon plc | BBB Reviews](https://www.bbb.org/us/il/chicago/profile/insurance-companies/aon-plc-0654-5291/customer-reviews)

Reviewed 2026-09-29. [Read the sourced review](https://spot.insure/insurance-providers/aon/reviews).

## Gallagher Reviews

Review Score: 9.3 / 10 from 3 rated sources, equally weighted.

Gallagher has strong Trustpilot feedback and a favorable historical large-commercial survey result. Neither directly measures today’s US small-business service.

- J.D. Power: Broker satisfaction rank/score 2nd / 855 (Rank / 1,000-point score). 2017 US/Canada large-commercial broker study; participating organizations had at least $100m annual revenue or operating budget; not small-business-specific. Period: 2017 study. Checked 2026-09-25. [JD Power 2017 Large Commercial Insurance Study](https://www.jdpower.com/business/press-releases/jd-power-2017-large-commercial-insurance-study)
- Trustpilot: TrustScore 4.6 (5 stars); 8190 reviews. Global Arthur J. Gallagher & Co. brand profile; mixed countries and insurance lines, not US commercial-only. Period: 976 reviews in prior 12 months; observed 2026-09-25. Checked 2026-09-25. [Gallagher Reviews | Trustpilot](https://www.trustpilot.com/review/www.ajg.com)
- BBB: BBB grade A+ (BBB letter grade). BBB corporate headquarters profile for Gallagher, Rolling Meadows, Illinois. Checked 2026-09-25. [Gallagher | BBB Business Profile](https://www.bbb.org/us/il/rolling-meadows/profile/insurance-companies/gallagher-0654-23000270)

Reviewed 2026-09-25. [Read the sourced review](https://spot.insure/insurance-providers/gallagher/reviews).

## Agent and Developer Resources

- [Markdown page](https://spot.insure/compare/aon-vs-gallagher/directors-officers.md)
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- [Public MCP server](https://spot.insure/mcp)
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