---
title: "Aon vs Cowbell: D&O Insurance"
description: "Cowbell describes D&O within its technology management-liability offering; Aon describes broking and Side A/B/C program design."
canonical: "https://spot.insure/compare/aon-vs-cowbell/directors-officers"
page-type: "line-comparison"
updated-at: "2026-09-30"
comparison-pair: "aon-vs-cowbell"
provider-a: "aon"
provider-b: "cowbell"
coverage-line: "directors-officers"
---

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

## Agent Guide

**What this page is:** Focused comparison of Aon and Cowbell 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 Cowbell. 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 Cowbell for D&O Insurance: how do they differ?
- Which is better for D&O Insurance, Aon or Cowbell?
- What does Aon or Cowbell publish about D&O Insurance (limits, eligibility, claims, add-ons)?
- What should I confirm in a quote for D&O Insurance from Aon or Cowbell?

**Key facts:**
- Line: D&O Insurance. Providers: Aon and Cowbell.
- 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 Cowbell](https://spot.insure/compare/aon-vs-cowbell) — 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)
- [Cowbell profile](https://spot.insure/insurance-providers/cowbell) — provider profile (evidence)
- [Aon vs Cowbell Crime Insurance](https://spot.insure/compare/aon-vs-cowbell/crime) — sibling comparison (other line, or other pair for this line)
- [Aon vs Cowbell Cyber Insurance](https://spot.insure/compare/aon-vs-cowbell/cyber) — sibling comparison (other line, or other pair for this line)
- [Aon vs Cowbell Employment Practices Liability Insurance](https://spot.insure/compare/aon-vs-cowbell/employment-practices) — sibling comparison (other line, or other pair for this line)
- [Aon vs Cowbell Fiduciary Liability Insurance](https://spot.insure/compare/aon-vs-cowbell/fiduciary) — sibling comparison (other line, or other pair for this line)
- [Aon vs Cowbell Management Liability Insurance](https://spot.insure/compare/aon-vs-cowbell/management-liability) — 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 Cowbell D&O Insurance](https://spot.insure/compare/aig-vs-cowbell/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 Cowbell D&O Insurance](https://spot.insure/compare/alliance-risk-vs-cowbell/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 Cowbell D&O Insurance](https://spot.insure/compare/amelia-risk-vs-cowbell/directors-officers) — sibling comparison (other line, or other pair for this line)

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

Cowbell describes D&O within its technology management-liability offering; Aon describes broking and Side A/B/C program design.

## Research Scope and Use

Use this comparison to evaluate Aon and Cowbell 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

Cowbell ties D&O to technology management liability; Aon describes cross-market insurer selection. [3](https://www.aon.com/en/capabilities/risk-transfer/directors-and-officers-liability-insurance "Directors’ and Officers’ (D&O) Liability Insurance") [7](https://cowbell.insure/mgmt-liability/ "Management liability coverage for small & medium enterprises")

## 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 Cowbell Insurance?

Cowbell suits small and midsize businesses seeking cyber options by company size, with technology E&O and Zurich management-liability options also available; firms needing broad commercial coverage should compare a full-service broker. Some security services cost extra. [4](https://cowbell.insure/ "Cowbell") [5](https://cowbell.insure/wp-content/uploads/pdfs/CB-US-PrimeTech-Overview-1.pdf "Prime Tech Product Overview") [6](https://www.zurichna.com/insurance/excess-and-surplus/small-business-management-liability "Small and Midsize Business Management Liability | Zurich Select Plus")

[Cowbell profile](https://spot.insure/insurance-providers/cowbell)

## 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. [8](https://www.thehartford.com/business-insurance/glossary-of-business-insurance-terms "Glossary of Business Insurance Terms") [9](https://eperils.com/wp-content/uploads/2016/09/14-02-18480.pdf "The Chubb Primary Directors & Officers and Entity Securities Liability Insurance") [10](https://asset.trvstatic.com/download/assets/pdo-3001.pdf/d66bd58e63c911ee99d14294a32ecb95 "Private Company Directors and Officers Liability Coverage")

## Key Differences in D&O Insurance

### Technology Program and Placement

Cowbell lists D&O among management-liability coverage for technology businesses. Aon describes D&O brokerage for public and private organizations and uses insurer analytics. A technology company should confirm whether Cowbell’s offer is bundled, then ask Aon which markets can provide comparable terms. [3](https://www.aon.com/en/capabilities/risk-transfer/directors-and-officers-liability-insurance "Directors’ and Officers’ (D&O) Liability Insurance") [7](https://cowbell.insure/mgmt-liability/ "Management liability coverage for small & medium enterprises")

### Policy Structure and Carrier

Aon explains Side A, B and C coverage and how forms differ by company type. Cowbell describes its D&O policy and insurer arrangements, but the actual form controls each side. Compare entity protection, securities terms and the issuing carrier in the quote. [3](https://www.aon.com/en/capabilities/risk-transfer/directors-and-officers-liability-insurance "Directors’ and Officers’ (D&O) Liability Insurance") [7](https://cowbell.insure/mgmt-liability/ "Management liability coverage for small & medium enterprises")

## What to Confirm in D&O Insurance Quotes

- Ask Cowbell whether D&O is bundled and which insurer issues it; ask Aon for carrier alternatives, Side A/B/C terms and exclusions. [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 | Cowbell / Zurich Select Plus Private Company D&O |
| --- | --- | --- |
| 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..) | Private Company D&O is one module within Cowbell's distribution of Zurich's Select Plus management liability product; Cowbell gives Zurich-appointed E&S wholesalers platform access, and Zurich underwrites the module. Zurich's own page labels this module 'Private Management and Company Liability' rather than plain 'D&O.' [7](https://cowbell.insure/mgmt-liability/ "Management liability coverage for small & medium enterprises") [6](https://www.zurichna.com/insurance/excess-and-surplus/small-business-management-liability "Small and Midsize Business Management Liability | Zurich Select Plus") (Evidence: Company-reported; scope: Management liability page intro and module list; Zurich page module-name section..) |
| 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..) | Cowbell and Zurich both say the Select Plus modules, including D&O, are offered on Zurich admitted paper. Zurich's site footer names 'Zurich American Insurance Company' in its copyright notice, but neither page states that entity is the specific policy issuer for this D&O module. [7](https://cowbell.insure/mgmt-liability/ "Management liability coverage for small & medium enterprises") [6](https://www.zurichna.com/insurance/excess-and-surplus/small-business-management-liability "Small and Midsize Business Management Liability | Zurich Select Plus") (Evidence: Company-reported; scope: Management liability page intro; Zurich page intro and footer..) |
| 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..) | Cowbell targets this D&O module at private companies with under 250 employees and under $50M in assets, in industries such as technology, construction, manufacturing, hospitality, and retail. [7](https://cowbell.insure/mgmt-liability/ "Management liability coverage for small & medium enterprises") (Evidence: Company-reported; scope: FAQ 'What size accounts are targeted?' and Target industries list..) |
| 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..) | Cowbell describes D&O liability as protecting the personal assets of directors and officers and the company's financial assets against claims alleging wrongful acts in their capacity as directors and officers. [7](https://cowbell.insure/mgmt-liability/ "Management liability coverage for small & medium enterprises") (Evidence: Company-reported; scope: FAQ 'What is the difference between management liability and D&O?'..) |
| 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..) | Neither the Cowbell page nor Zurich's own Select Plus page, both read in full, publishes D&O limit or retention amounts. [7](https://cowbell.insure/mgmt-liability/ "Management liability coverage for small & medium enterprises") [6](https://www.zurichna.com/insurance/excess-and-surplus/small-business-management-liability "Small and Midsize Business Management Liability | Zurich Select Plus") (Evidence: Not publicly disclosed; scope: Cowbell page and Zurich page, both read on 2026-09-23..) |
| 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..) | Cowbell frames D&O coverage as a way to help attract and retain directors and officers by giving them personal-asset protection, and says the product covers legal fees, settlements, and other defense costs for the company and its management. [7](https://cowbell.insure/mgmt-liability/ "Management liability coverage for small & medium enterprises") (Evidence: Company-reported; scope: FAQ 'Why does my company need management liability coverage?'..) |
| How to Apply | Confirm in your quote. | This D&O module is accessed only by appointed Zurich E&S wholesalers through the Cowbell platform's API; it is not sold directly to businesses. [7](https://cowbell.insure/mgmt-liability/ "Management liability coverage for small & medium enterprises") (Evidence: Company-reported; scope: FAQ 'How can I access the Zurich Select Plus management liability product through Cowbell?'..) |

## Full Comparison

- [Aon vs Cowbell](https://spot.insure/compare/aon-vs-cowbell): 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 Cowbell Crime Insurance](https://spot.insure/compare/aon-vs-cowbell/crime)
- [Aon vs Cowbell Cyber Insurance](https://spot.insure/compare/aon-vs-cowbell/cyber)
- [Aon vs Cowbell Employment Practices Liability Insurance](https://spot.insure/compare/aon-vs-cowbell/employment-practices)
- [Aon vs Cowbell Fiduciary Liability Insurance](https://spot.insure/compare/aon-vs-cowbell/fiduciary)
- [Aon vs Cowbell Management Liability Insurance](https://spot.insure/compare/aon-vs-cowbell/management-liability)
- [AIG vs Aon D&O Insurance](https://spot.insure/compare/aig-vs-aon/directors-officers)
- [AIG vs Cowbell D&O Insurance](https://spot.insure/compare/aig-vs-cowbell/directors-officers)
- [Alliance Risk vs Aon D&O Insurance](https://spot.insure/compare/alliance-risk-vs-aon/directors-officers)
- [Alliance Risk vs Cowbell D&O Insurance](https://spot.insure/compare/alliance-risk-vs-cowbell/directors-officers)
- [Amelia Risk vs Aon D&O Insurance](https://spot.insure/compare/amelia-risk-vs-aon/directors-officers)
- [Amelia Risk vs Cowbell D&O Insurance](https://spot.insure/compare/amelia-risk-vs-cowbell/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.

### Cowbell

4. [Cowbell](https://cowbell.insure/). Cowbell; What We Do; Assess, Insure, Respond and Improve; U.S. navigation; footer legal disclosure. Accessed 2026-09-15.
5. [Prime Tech Product Overview](https://cowbell.insure/wp-content/uploads/pdfs/CB-US-PrimeTech-Overview-1.pdf). Cowbell; PDF pp. 1–4: non-admitted combined Technology E&O and cyber for technology businesses up to $1 billion; up to $5 million; surplus lines in 50 states; edition PRIME TECH US0001 1025. Accessed 2026-09-16.
6. [Small and Midsize Business Management Liability | Zurich Select Plus](https://www.zurichna.com/insurance/excess-and-surplus/small-business-management-liability). Zurich North America; Intro on the Zurich/Cowbell collaboration; module name 'Private Management and Company Liability'; FAQ 'What is the difference between management liability and D&O?' (identical to Cowbell's page); Targeted industries list; footer copyright. Accessed 2026-09-23.
7. [Management liability coverage for small & medium enterprises](https://cowbell.insure/mgmt-liability/). Cowbell; FAQ 'What is the difference between management liability and D&O?' (D&O definition); FAQ 'Why does my company need management liability coverage?' (Protection for Directors and Officers, Legal Expense Coverage, Attracting and Retaining Talent bullets); Target industries list. Accessed 2026-09-23.

### D&O Insurance Guide

8. [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.
9. [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.
10. [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).

## Cowbell Reviews

Review Score: 2.0 / 10 from 1 rated source, equally weighted.

Cowbell has one public rating we could find: 1.0 out of 5 on SourceForge from three reviews in 2023. That's too few and too old to say much.

- SourceForge: SourceForge rating 1.0 (out of 5); 3 reviews. SourceForge software directory listing for Cowbell Cyber. Three small-business reviewers describe the cyber insurance product. Small sample, all from 2023. Period: reviews dated Jan to Jul 2023. Checked 2026-09-29. [Cowbell Cyber Reviews](https://sourceforge.net/software/product/Cowbell-Cyber/)

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

## Agent and Developer Resources

- [Markdown page](https://spot.insure/compare/aon-vs-cowbell/directors-officers.md)
- [Developer resources](https://spot.insure/developers)
- [Public MCP server](https://spot.insure/mcp)
- [MCP server manifest](https://spot.insure/server.json)
- [OpenAPI description](https://spot.insure/openapi.json)
- [Public page index](https://spot.insure/llms.txt)