---
title: "Cowbell vs Marsh McLennan Agency: Fiduciary Liability Insurance"
description: "Cowbell distributes a fiduciary module within Zurich U.S.’s Select Plus management-liability product, targeting private companies with fewer than 250 employees and under $50 million in assets; Marsh McLennan Agency also describes fiduciary placement through an adviser, but its overview does not state plan or company thresholds."
canonical: "https://spot.insure/compare/cowbell-vs-marsh-mclennan-agency/fiduciary"
page-type: "line-comparison"
updated-at: "2026-09-30"
comparison-pair: "cowbell-vs-marsh-mclennan-agency"
provider-a: "cowbell"
provider-b: "marsh-mclennan-agency"
coverage-line: "fiduciary"
---

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[Human-readable page](https://spot.insure/compare/cowbell-vs-marsh-mclennan-agency/fiduciary)

## Agent Guide

**What this page is:** Focused comparison of Cowbell and Marsh McLennan Agency for Fiduciary Liability 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 Fiduciary Liability Insurance questions about Cowbell versus Marsh McLennan Agency. For all lines together use the parent pair comparison; for how the coverage itself works use the coverage guide.

**Questions this page answers:**
- Cowbell vs Marsh McLennan Agency for Fiduciary Liability Insurance: how do they differ?
- Which is better for Fiduciary Liability Insurance, Cowbell or Marsh McLennan Agency?
- What does Cowbell or Marsh McLennan Agency publish about Fiduciary Liability Insurance (limits, eligibility, claims, add-ons)?
- What should I confirm in a quote for Fiduciary Liability Insurance from Cowbell or Marsh McLennan Agency?

**Key facts:**
- Line: Fiduciary Liability Insurance. Providers: Cowbell and Marsh McLennan Agency.
- 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:**
- [Cowbell vs Marsh McLennan Agency](https://spot.insure/compare/cowbell-vs-marsh-mclennan-agency) — parent: all coverage lines for this pair
- [Fiduciary Liability Insurance guide](https://spot.insure/coverage/fiduciary) — coverage explainer for this line
- [Cowbell profile](https://spot.insure/insurance-providers/cowbell) — provider profile (evidence)
- [Marsh McLennan Agency profile](https://spot.insure/insurance-providers/marsh-mclennan-agency) — provider profile (evidence)
- [Cowbell vs Marsh McLennan Agency Crime Insurance](https://spot.insure/compare/cowbell-vs-marsh-mclennan-agency/crime) — sibling comparison (other line, or other pair for this line)
- [Cowbell vs Marsh McLennan Agency Cyber Insurance](https://spot.insure/compare/cowbell-vs-marsh-mclennan-agency/cyber) — sibling comparison (other line, or other pair for this line)
- [AIG vs Cowbell Fiduciary Liability Insurance](https://spot.insure/compare/aig-vs-cowbell/fiduciary) — sibling comparison (other line, or other pair for this line)
- [AIG vs Marsh McLennan Agency Fiduciary Liability Insurance](https://spot.insure/compare/aig-vs-marsh-mclennan-agency/fiduciary) — sibling comparison (other line, or other pair for this line)
- [Alliance Risk vs Cowbell Fiduciary Liability Insurance](https://spot.insure/compare/alliance-risk-vs-cowbell/fiduciary) — sibling comparison (other line, or other pair for this line)
- [Alliance Risk vs Marsh McLennan Agency Fiduciary Liability Insurance](https://spot.insure/compare/alliance-risk-vs-marsh-mclennan-agency/fiduciary) — 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 Marsh McLennan Agency Fiduciary Liability Insurance](https://spot.insure/compare/aon-vs-marsh-mclennan-agency/fiduciary) — sibling comparison (other line, or other pair for this line)

# Cowbell vs Marsh McLennan Agency: How Do They Compare for Fiduciary Liability Insurance?

Cowbell distributes a fiduciary module within Zurich U.S.’s Select Plus management-liability product, targeting private companies with fewer than 250 employees and under $50 million in assets; Marsh McLennan Agency also describes fiduciary placement through an adviser, but its overview does not state plan or company thresholds.

## Research Scope and Use

Use this comparison to evaluate Cowbell and Marsh McLennan Agency for Fiduciary Liability 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 distributes a fiduciary module within Zurich U.S.’s Select Plus management-liability product, targeting private companies with fewer than 250 employees and under $50 million in assets; Marsh McLennan Agency also describes fiduciary placement through an adviser, but its overview does not state plan or company thresholds. [4](https://cowbell.insure/mgmt-liability/ "Management liability coverage for small & medium enterprises") [7](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability | MMA")

## 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. [1](https://cowbell.insure/ "Cowbell") [2](https://cowbell.insure/wp-content/uploads/pdfs/CB-US-PrimeTech-Overview-1.pdf "Prime Tech Product Overview") [3](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 Marsh McLennan Agency?

Marsh McLennan Agency provides business insurance and employee health and benefits, alongside retirement, wealth, and private-client services across the United States and Canada. Its US small-business page lists six common coverage types and directs buyers to request a personalized quote by phone; the insurer and terms for a specific placement must be confirmed in the proposal. [5](https://www.marshmma.com/us/mma/about-us.html "Who We Are") [6](https://www.marshmma.com/us/solutions/small-business.html "Small Business Insurance Solutions")

[Marsh McLennan Agency profile](https://spot.insure/insurance-providers/marsh-mclennan-agency)

## What Is Fiduciary Liability Insurance?

Fiduciary liability can protect your company and plan fiduciaries when participants claim mishandling of an employee benefit plan. If you sponsor a retirement or health plan, check who is insured and whether both administration errors and fiduciary-breach claims are addressed. [8](https://www.dol.gov/sites/dolgov/files/ebsa/employers-and-advisers/guidance/field-assistance-bulletins/erisa-fidelity-bonding-requirements.pdf "Field Assistance Bulletin No. 2008-04: Guidance Regarding ERISA Fidelity Bonding Requirements") [9](https://asset.trvstatic.com/download/assets/fri-3001.pdf/c75b6c8e63ca11ee93454641efede6a9 "Fiduciary Liability") [10](https://www.travelers.com/business-insurance/professional-liability-insurance/fiduciary-liability "Fiduciary Liability Insurance")

## Key Differences in Fiduciary Liability Insurance

### Coverage Scope and Plan Details

Cowbell distributes a fiduciary module within Zurich U.S.’s Select Plus management-liability product, targeting private companies with fewer than 250 employees and under $50 million in assets. The module is accessed by appointed Zurich U.S. E&S wholesalers through Cowbell’s platform API, not sold directly to businesses. Marsh McLennan Agency also describes fiduciary placement through an adviser, but its overview does not state plan or company thresholds. Buyers should check whether Cowbell’s size bands fit and ask Marsh McLennan Agency to assess the same company profile. [4](https://cowbell.insure/mgmt-liability/ "Management liability coverage for small & medium enterprises") [7](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability | MMA")

### Placement and Buyer Questions

Both pages identify fiduciary liability with employee-benefit plans; Cowbell specifically cites 401(k) and health plans and says the Zurich U.S. Select Plus modules use Zurich U.S. admitted paper. Marsh McLennan Agency’s reviewed page does not identify the issuing insurer or program structure. Request the carrier and actual module wording before comparing coverage. [4](https://cowbell.insure/mgmt-liability/ "Management liability coverage for small & medium enterprises") [7](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability | MMA")

## What to Confirm in Fiduciary Liability Insurance Quotes

- Ask the appointed wholesaler whether the company meets Cowbell’s employee and asset thresholds and which Zurich U.S. entity appears on the policy. [4](https://cowbell.insure/mgmt-liability/ "Management liability coverage for small & medium enterprises")
- Ask Marsh McLennan Agency which fiduciary program and issuing insurer it proposes, and whether eligibility is plan-asset based. [7](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability | MMA")

## Offering Details

| Criteria | Cowbell / Zurich Select Plus Fiduciary Liability | Marsh McLennan Agency fiduciary (official overview) |
| --- | --- | --- |
| Role in This Line | Fiduciary liability is one module within Cowbell's distribution of Zurich's Select Plus management liability product; Cowbell operates the platform, Zurich underwrites the module. Zurich's own page lists 'Fiduciary Liability' as one of the four modules a buyer can combine. [4](https://cowbell.insure/mgmt-liability/ "Management liability coverage for small & medium enterprises") [3](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..) | Marsh McLennan Agency describes arranging fiduciary for the audience stated on the cited product page. [7](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability | MMA") (Evidence: Company-reported; scope: fiduciary marketed by marsh-mclennan-agency; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement..) |
| Issuing Insurer | Cowbell and Zurich both say the Select Plus modules, including fiduciary liability, are written 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 module. [4](https://cowbell.insure/mgmt-liability/ "Management liability coverage for small & medium enterprises") [3](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..) | Confirm in your quote. |
| Who It’s For | Cowbell targets this fiduciary module at private companies with under 250 employees and under $50M in assets, across the same target industries listed for the broader Select Plus product, such as manufacturing and technology. [4](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..) | Organizations seeking executive liability solutions; source does not define plan-specific eligibility. [7](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability | MMA") (Evidence: Company-reported; scope: fiduciary marketed by marsh-mclennan-agency; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement..) |
| Coverage Features | Cowbell describes fiduciary liability as protecting against claims arising from breaches of fiduciary duties related to employee benefit plans, such as a company's 401(k) or health plan. [4](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?'..) | The cited product page describes fiduciary liability as a named product in the executive and professional liability suite; the overview does not state plan-specific grants. Marketing description only; actual coverage, exclusions, conditions, limits, and availability depend on the issued policy and jurisdiction. [7](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability | MMA") (Evidence: Company-reported; scope: fiduciary marketed by marsh-mclennan-agency; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement..) |
| Limits and Retentions | Neither the Cowbell page nor Zurich's own Select Plus page, both read in full, publishes fiduciary-liability limit or retention amounts. [4](https://cowbell.insure/mgmt-liability/ "Management liability coverage for small & medium enterprises") [3](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..) | The cited overview does not set a universal limit or retention for this line. Ask for the proposed policy form, limits, retentions, exclusions, and conditions in the quote. [7](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability | MMA") (Evidence: Not publicly disclosed; scope: Only the cited marketing page was reviewed for published limit and retention information; no policy-form entitlement is inferred..) |
| Risk Services | Both Cowbell and Zurich describe the Select Plus product generally as backed by 'the reputable Zurich Claims service'; neither reviewed page describes a fiduciary-specific service such as plan-compliance consulting. [4](https://cowbell.insure/mgmt-liability/ "Management liability coverage for small & medium enterprises") [3](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: Management liability page intro; Zurich page intro, both read on 2026-09-23..) | Confirm in your quote. |
| How to Apply | This fiduciary module is accessed only by appointed Zurich E&S wholesalers through the Cowbell platform's API; it is not sold directly to businesses. [4](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?'..) | The page invites organizations to contact a Marsh McLennan Agency adviser or specialist to discuss placement. The page does not establish a quote, bind, or coverage-effective timeline. [7](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability | MMA") (Evidence: Company-reported; scope: fiduciary marketed by marsh-mclennan-agency; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement..) |

## Full Comparison

- [Cowbell vs Marsh McLennan Agency](https://spot.insure/compare/cowbell-vs-marsh-mclennan-agency): all coverage lines, business roles, service and claims.
- [What Is Fiduciary Liability Insurance?](https://spot.insure/coverage/fiduciary): Fiduciary liability can protect your company and plan fiduciaries from covered claims about benefit-plan management; check who is insured and whether administration errors are included.
- [Cowbell vs Marsh McLennan Agency Crime Insurance](https://spot.insure/compare/cowbell-vs-marsh-mclennan-agency/crime)
- [Cowbell vs Marsh McLennan Agency Cyber Insurance](https://spot.insure/compare/cowbell-vs-marsh-mclennan-agency/cyber)
- [AIG vs Cowbell Fiduciary Liability Insurance](https://spot.insure/compare/aig-vs-cowbell/fiduciary)
- [AIG vs Marsh McLennan Agency Fiduciary Liability Insurance](https://spot.insure/compare/aig-vs-marsh-mclennan-agency/fiduciary)
- [Alliance Risk vs Cowbell Fiduciary Liability Insurance](https://spot.insure/compare/alliance-risk-vs-cowbell/fiduciary)
- [Alliance Risk vs Marsh McLennan Agency Fiduciary Liability Insurance](https://spot.insure/compare/alliance-risk-vs-marsh-mclennan-agency/fiduciary)
- [Aon vs Cowbell Fiduciary Liability Insurance](https://spot.insure/compare/aon-vs-cowbell/fiduciary)
- [Aon vs Marsh McLennan Agency Fiduciary Liability Insurance](https://spot.insure/compare/aon-vs-marsh-mclennan-agency/fiduciary)

## Sources

### Cowbell

1. [Cowbell](https://cowbell.insure/). Cowbell; What We Do; Assess, Insure, Respond and Improve; U.S. navigation; footer legal disclosure. Accessed 2026-09-15.
2. [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.
3. [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 'Fiduciary 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.
4. [Management liability coverage for small & medium enterprises](https://cowbell.insure/mgmt-liability/). Cowbell; FAQ 'What is the difference between management liability and D&O?' (Fiduciary Liability definition); Target industries list; FAQ on access and account size. Accessed 2026-09-23.

### Marsh McLennan Agency

5. [Who We Are](https://www.marshmma.com/us/mma/about-us.html). Marsh McLennan Agency; Lines 193-195: ‘a business of Marsh’ and company-listed service lines across US and Canada. This does not establish the legal entity for an account, corporate ownership chart, or insurer role.. Accessed 2026-09-29.
6. [Small Business Insurance Solutions](https://www.marshmma.com/us/solutions/small-business.html). Marsh McLennan Agency; Lines 205-207: small-business audience and call invitation; lines 224-249 list six coverage categories and short descriptions; line 264 is an embedded form whose function is not stated. No form submitted.. Accessed 2026-09-29.
7. [Executive and Professional Liability | MMA](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html). Marsh McLennan Agency; Named within the executive and professional liability product suite.. Accessed 2026-09-30.

### Fiduciary Liability Insurance Guide

8. [Field Assistance Bulletin No. 2008-04: Guidance Regarding ERISA Fidelity Bonding Requirements](https://www.dol.gov/sites/dolgov/files/ebsa/employers-and-advisers/guidance/field-assistance-bulletins/erisa-fidelity-bonding-requirements.pdf). U.S. Department of Labor, Employee Benefits Security Administration; Q2 pp.2–3. Accessed 2026-09-16.
9. [Fiduciary Liability](https://asset.trvstatic.com/download/assets/fri-3001.pdf/c75b6c8e63ca11ee93454641efede6a9). Travelers Casualty and Surety Company of America; II.D,J–L pp.2–3; II.A p.1; II.V p.5; Header p.1; II.M p.3; I p.1; III.A.6–8 pp.5–6; II.M.2 p.3; III.B.1 p.6. Accessed 2026-09-16.
10. [Fiduciary Liability Insurance](https://www.travelers.com/business-insurance/professional-liability-insurance/fiduciary-liability). Travelers; What Is Fiduciary Liability Insurance?. 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.

## 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).

## Marsh McLennan Agency Reviews

Review Score: 8.2 / 10 from 2 rated sources, equally weighted.

There are almost no public customer reviews of Marsh McLennan Agency (MMA). Trustpilot shows 3.2 out of 5, but from a single review, and BBB shows an A grade with four complaints closed in three years.

- Trustpilot: TrustScore 3.2 (out of 5); 1 reviews. Trustpilot profile for marshmma.com, MMA's own domain. Unclaimed; MMA has not invited reviews. Period: checked 2026-09-29. Checked 2026-09-29. [marshmma.com Trustpilot profile](https://www.trustpilot.com/review/marshmma.com)
- Trustpilot: TrustScore (Marsh brand) 1.3 (out of 5); 115 reviews. Trustpilot page for marsh.com, the global Marsh brand (mostly individual and non-US customers). This is a different entity from MMA. Period: checked 2026-09-29. Checked 2026-09-29. [Marsh Reviews](https://www.trustpilot.com/review/www.marsh.com)
- BBB: BBB business grade A. BBB San Diego-area profile for Marsh & McLennan Agency LLC (accredited). MMA has separate BBB profiles per office; Dayton and Schaumburg both show A+. Checked 2026-09-29. [Marsh & McLennan Agency LLC (San Diego) BBB](https://www.bbb.org/us/ca/san-diego/profile/insurance-services-office/marsh-mclennan-agency-llc-1126-3000103)
- BBB: Complaints 4. Same San Diego-area profile; zero customer reviews. No client-count denominator. Period: closed in the last three years (checked 2026-09-29). Checked 2026-09-29. [Marsh & McLennan Agency LLC — BBB Complaints](https://www.bbb.org/us/ca/san-diego/profile/insurance-services-office/marsh-mclennan-agency-llc-1126-3000103/complaints); [Marsh & McLennan Agency LLC — BBB Reviews](https://www.bbb.org/us/ca/san-diego/profile/insurance-services-office/marsh-mclennan-agency-llc-1126-3000103/customer-reviews)

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

## Agent and Developer Resources

- [Markdown page](https://spot.insure/compare/cowbell-vs-marsh-mclennan-agency/fiduciary.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)