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. 1,2
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. 4,5,6
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. 8,9,10
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 7
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 7
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
Review Scores
These averages can combine ratings for different products, locations, and customer groups, including approximate BBB grade conversions. Read each review for the sources, scope, and calculation.
Aon
Review Score
3 rated sources
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.[4][6][7]
Read Aon reviewsCowbell
Review Score
1 rated source
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.[8]
Read Cowbell reviewsOffering Details
Aon vs Cowbell: D&O Insurance: documented features by provider
| 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. 3Company-reported. 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.' 7,6Company-reported. 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. 3Not found in reviewed sources. 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. 7,6Company-reported. 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. 3Company-reported. 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. 7Company-reported. 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. 3Company-reported. 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. 7Company-reported. 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. 3Not publicly disclosed. 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. 7,6Not publicly disclosed. 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. 3Company-reported. 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. 7Company-reported. 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. 7Company-reported. FAQ 'How can I access the Zurich Select Plus management liability product through Cowbell?'. |
Full Comparison
More Aon vs Cowbell Comparisons
Other D&O Insurance Comparisons
Sources
Aon
- Commercial Risk Solutions U.S. Brokerage Terms of Service. 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.
- 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.
- Directors’ and Officers’ (D&O) 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
- Cowbell. Cowbell; What We Do; Assess, Insure, Respond and Improve; U.S. navigation; footer legal disclosure. Accessed 2026-09-15.
- Prime Tech Product Overview. 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.
- Small and Midsize Business Management Liability | Zurich Select Plus. 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.
- Management liability coverage for small & medium enterprises. 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
- Glossary of Business Insurance Terms. The Hartford; Directors and Officers Liability Insurance; Errors and Omissions Insurance; Employment Practices Liability Insurance. Accessed 2026-09-16.
- The Chubb Primary Directors & Officers and Entity Securities Liability Insurance. 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.
- Private Company Directors and Officers Liability Coverage. 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.
