Marsh McLennan Agency vs USI Insurance Services

As of 2026-09-28, Marsh’s US legal-entity page lists Marsh & McLennan Agency LLC as the current entity name for Marsh Agency (formerly MMA) and Marsh Agency LLC as proposed, with displayed state completion statuses marked TBD. Louisiana’s regulator lists Marsh & McLennan Agency LLC as a producer agency with active casualty, accident and health or sickness, life, property, and surplus-lines authorities through 2028-03-31. This is Louisiana-specific producer evidence, not evidence of an insurer role or nationwide licensing. ^10,1Verified. Current entity name and proposed legal-name transition as listed on Marsh’s US legal-entity page, plus producer-authority evidence for Louisiana only, accessed 2026-09-28. No other state licensing was audited; this record does not establish an insurer or underwriting role.

Marsh McLennan Agency describes itself as a business of Marsh and lists business insurance, employee health and benefits, retirement and wealth, and private-client insurance services across the United States and Canada. ²Company-reported. Current MMA company description. Does not establish corporate ownership structure, the legal entity for a particular placement, or an insurer role.

USI describes itself as a U.S. insurance brokerage and consulting firm that arranges property and casualty, employee benefits, personal risk, program, and retirement solutions. The reviewed official pages do not identify USI as the insurer that issues commercial policies. ^20,19,26,39Company-reported. Brand and operating description on current USI about and homepage materials, plus the 31 August 2026 Aon announcement’s About USI text. Role of any affiliate insurer is outside this fact.

USI’s commissions page states that, as a licensed insurance producer, it may advise on insurance contracts, sell insurance, and obtain coverages for clients. Privacy and staff materials identify the operating company as USI Insurance Services LLC. Current California producer-license status remains independently unverified. ^26,25,40Company-reported. Producer role as described by USI. Does not verify license class, surplus-lines authority, or appointment status.

On 31 August 2026, Aon plc announced a definitive agreement to acquire USI from KKR and other shareholders for a $17.0 billion purchase price, with closing expected in the fourth quarter of 2026 subject to customary conditions including regulatory approvals. Aon stated that Aon and USI will continue to operate independently until the closing date. The reviewed announcement does not establish that the transaction has closed. ³⁹Company-reported. Announced transaction status as of the 31 August 2026 release. Does not change a buyer’s existing policy terms by itself.

MMA describes Marsh Agency as a separate business unit serving as an advocate and broker for the middle market. ¹³Company-reported. Company-stated role and customer focus for the future Marsh Agency operating brand; not a revenue, size, or eligibility threshold.

MMA’s US industry directory includes pages for construction, financial institutions, healthcare, manufacturing, real estate, and transportation and trucking. These are examples of stated sector focus, not a complete appetite or eligibility list. ⁸Company-reported. Examples from MMA’s national US industry directory; the directory is evidence of stated sector focus, not a complete appetite or eligibility list.

USI says it has served over 500,000 clients nationwide and positions itself as a middle-market brokerage and consulting firm. Its Technology practice describes clients including software, hardware, networking, semiconductors, or communications companies from early seed stage through IPO. Public pages do not publish a minimum revenue, headcount, or California-startup eligibility screen. ^20,28,39Company-reported. Company marketing of client types. Not an underwriting appetite or guaranteed acceptance statement.

MMA’s US small-business page lists general liability, commercial property, workers’ compensation, professional liability, commercial auto, and cyber liability, and invites buyers to call 833-256-4266 for a personalized quote. The page also contains a small-business specialist form, but its function and any online application, purchase, or binding route are not established by the page reviewed. ¹⁵Company-reported. US small-business landing page only. The phone invitation does not establish quote speed, eligibility, online purchase or binding; the embedded specialist form's function was not established.

USI does not publish a self-serve commercial quote flow on the reviewed pages. Technology and P&C inquiries are directed to pcinquiries@usi.com or a local office. The contact page includes a website message box that USI warns is not secured in transit and should not be used for sensitive information. Small- and medium-sized management-liability inquiries are also directed to Select.Business@usi.com. No public binding timetable or online eligibility tool was found. ^28,27,23,35Company-reported. Public inquiry paths as of access date. Not an application completeness or speed claim.

MMA says the Marsh Agency brand transition will not change clients’ account manager, team, or point of contact, and will not affect existing policies or programs; clients may see the legal-name change during renewals. This describes the rebrand transition, not MMA’s general renewal process. ¹³Company-reported. Only the announced Marsh Agency rebrand and its stated effect on existing clients; this does not document MMA’s general renewal workflow, renewal service level, or policy terms.

MMA’s Tampa office page lists InsurLink for policy and endorsement access, CSR24 for certificates, carrier contact information for commercial and personal-lines claims, and a local-consultant contact route. ¹⁷Company-reported. Services and client tools listed on the Tampa, Florida office page only. The claims listing provides carrier contact information and does not establish that MMA adjusts claims.

USI describes USI ONE as a proprietary consultative process that combines Omni analytics, a national network of specialists, and an enterprise planning process. Technology and P&C pages say clients receive tailored recommendations aimed at total cost of risk. Those are company descriptions of advisory method, not independently verified service outcomes. ^21,28,27Company-reported. Company-described brokerage and consulting process. Savings or outcome figures in case studies are not adopted as independent findings.

USI PATH is described as a proprietary risk-control platform that presents industry loss drivers, improvement areas by coverage line, and curated vendor solutions with preferred pricing and ROI projections. The homepage also markets PATH as guiding clients through risk control from identifying sources of loss to targeting solutions. Performance, ROI, and premium-reduction claims on those pages are company-reported. ^36,19Company-reported. Risk-control tool as marketed. Access for a given client is not specified on the public pages.

On its business-interruption page, MMA says it will advocate with insurers for clients if complex claim issues arise. This is a company-reported service statement; it does not establish claim outcomes or an adjusting/payment role. ³Company-reported. Company-described support for complex claims in the business-income and contingent-business-interruption page context; not a promise of claim outcomes or evidence that MMA adjusts or pays claims.

USI’s contact page tells people seeking claims assistance to contact the appropriate USI office. A May 2021 claims kit instructs clients to report property, workers’ compensation, general liability, and commercial auto claims to the insurance company, and to involve the USI account team or claims consultant for environmental, executive/management liability, professional liability/E&O, and cyber. Natural-disaster guidance likewise points commercial P&C clients to their claims representative or client service team. The materials describe reporting assistance, not claims-handling quality or authority to settle. ^23,37,38,27Company-reported. Public claims-reporting instructions. The 2021 kit may not reflect every current account’s reporting rules.