Atlantic Casualty Insurance

What Atlantic Casualty Insurance does

Atlantic Casualty Insurance Company is an Excess and Surplus Lines property and casualty insurance carrier founded in 1983 and headquartered in Goldsboro, North Carolina. The company is a wholly-owned subsidiary of Auto-Owners Insurance Group following the January 2016 acquisition of Atlantic Casualty and its former parent Strickland Insurance Group. Atlantic Casualty underwrites five specialty commercial lines: Commercial General Liability, Commercial Property, Garage, Inland Marine, and Ocean Marine. Target risks include non-standard or hard-to-place exposures such as artisan contractors, lessors risk, auto dealers, marine contractors, and vessel operators—business that standard-market carriers typically decline.

The company's core distribution channel is exclusively wholesale: products are sold and serviced through Managing General Agencies (MGAs) and wholesale general agency partners granted exclusive binding authority and brokerage agreements, with no direct-to-end-customer sales motion. Distribution is enabled by ACES (Atlantic Casualty Express System), the proprietary online rate/quote/bind/issue platform that supports new business, renewals, and endorsements across all five lines, plus a web services and branded retail portal capability that allows general agents to embed Atlantic Casualty's rating engine within their own retail environments.

Atlantic Casualty generates revenue through underwriting commercial insurance premiums across its five specialty lines. Pricing is determined on a per-risk basis through wholesale agents rather than published rate cards, with policies written on multi-year contracts. The company is licensed across all fifty states plus Washington DC, holds an A+ (Superior) Financial Size IX rating from A.M. Best, and operates regional offices in Glen Allen VA, Scottsdale AZ, and Glastonbury CT to support its nationwide wholesale partner network. Revenue is not publicly disclosed, but the Financial Size IX rating indicates policyholders' surplus in the $250M-$500M range, consistent with a mid-market specialty carrier that has reported four consecutive years of exponential growth alongside 80+ new associate hires.

Name

Atlantic Casualty Insurance

Legal name

Atlantic Casualty Insurance Company

Website

https://atlanticcasualty.net

Company type

Private

Founded year

1983

Operating status

Operating

Headcount range

51–100 employees

Short description

Atlantic Casualty Insurance Company is an Excess and Surplus Lines property and casualty carrier underwriting five specialty commercial lines (GL, Property, Garage, Inland Marine, Ocean Marine). Founded in 1983 and headquartered in Goldsboro, NC, it distributes exclusively through wholesale agents and MGAs using its proprietary ACES platform, and operates as a subsidiary of Auto-Owners Insurance Group across all 50 states.

Ownership category

akta.pro rank

Product category

Excess & Surplus Lines Property and Casualty Insurance

NAICS

Direct Property and Casualty Insurance Carriers (524126), Direct Insurance (except Life, Health, and Medical) Carriers (52412)

SIC

Fire, Marine & Casualty Insurance (6331)

akta.pro primary industry

Marine Specialty (Hull/P&I/Cargo) (FSAJAGAJ)

Keywords

• Excess surplus insurance
• Commercial general liability
• Commercial property insurance
• Marine insurance underwriting
• Wholesale insurance distribution

Headquarters

HQ city

Goldsboro

HQ country

United States

HQ region

North America

Offices4 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Operations, Personnel, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Commercial Insurance Premiums: Atlantic Casualty generates revenue through underwriting commercial insurance policies including Commercial General Liability, Commercial Property, Garage, Inland Marine, and Ocean Marine coverages. The company operates as an excess and surplus lines property and casualty insurance provider.

Pricing tiers

Go-to-market motion2 records

Distribution channels2 records

Marketing channels3 records

Core offering

Atlantic Casualty Insurance Company is an excess and surplus lines property and casualty insurer that underwrites specialty commercial coverages in five lines: Commercial General Liability, Commercial Property, Garage, Inland Marine, and Ocean Marine. The company distributes its products exclusively through Managing General Agencies and wholesale general agents that hold exclusive binding authority, and it operates its proprietary ACES (Atlantic Casualty Express System) technology platform for online rating, quoting, binding, and endorsement processing. Atlantic Casualty is a member of the Auto-Owners Insurance Group and is licensed to operate in all fifty states plus Washington, DC.

Product overview

Atlantic Casualty Insurance Company is an excess & surplus lines property & casualty insurance provider offering five core commercial insurance products: Commercial General Liability, Commercial Property, Garage, Inland Marine, and Ocean Marine. These products are distributed exclusively through Managing General Agencies using the company's proprietary ACES (Atlantic Casualty Express System) technology platform, which enables rate/quote/bind/issue capabilities for General Agents with exclusive binding authority and brokerage agreements. The company operates as a member of Auto-Owners Insurance Group and is authorized to conduct business in all fifty states including Washington, DC.

Differentiator

Problem solved

Functional benefit

Products and services

• Commercial General Liability Specialty commercial general liability insurance covering bodily injury, property damage, and personal/advertising injury arising from business operations. Target classes include artisan contractors, general contractors, lessors risk, restaurants, grocery stores, clothing manufacturers, tenant-occupied dwellings, warehouses, distributors, vacant land, vacant buildings, real estate property, special events, and truckers. Coverage extends to additional insured endorsements, assault and battery, care custody and control, and pesticide applicator exposures.
• Commercial Property Specialty commercial property insurance covering buildings, business personal property, business income, equipment breakdown, and ordinance or law exposures. Target properties include tenant dwellings, strip centers, large risk occupancies, apartments, offices, manufacturing operations, textile risks, and mercantile occupancies.
• Garage Specialty garage insurance for auto dealers (antique/classic auto, auto auctions, ATV, camper/travel trailer, emergency vehicle, farm equipment, heavy truck, motorcycle, RV, salvage titled auto, semi-trailer) and non-dealers (alarm installation, auto maintenance/repair, detailers, farm equipment repair, machine shops, motorcycle repair, mobile auto repair, tire dealer, valet parking, wrecker). Coverages include garage liability, garagekeepers coverage, dealers physical damage, uninsured/underinsured motorist, personal injury protection, and Auto Dealer E&O.
• Inland Marine Specialty inland marine insurance for mobile equipment, property in transit, and floating risks. Current products include Contractor's Equipment, Installation Floater, Miscellaneous Property Floater, Bailees, and Exhibition Floater. Future planned products include Builder's Risk, Motor Truck Cargo, and EDP coverage. Target industries include building/repair/service/renovation, civil/infrastructure, environmental, farming, forestry, landfill/waste management, manufacturing/assembly, maritime, oil/gas/energy, processing, recycling/salvage, rental, and sawmill/wood production.
• Ocean Marine Specialty ocean marine insurance covering vessel repair and servicing, marine contractors, operating vessels, port risk vessels, vessels awaiting sale or under refurbishment, vessel dealers, marinas, marine special events, vessel/marine product manufacturers, and the marine service industry. Coverages include Marina Operator's Legal Liability, Ship Repairer's Legal Liability, Stevedore's Legal Liability, Wharfinger's Legal Liability, and Marine Property.
• ACES (Atlantic Casualty Express System) Online rate/quote/bind/issue platform enabling General Agents to write new business, process renewals, and handle endorsements for General Liability, Property, Inland Marine, Package, and Garage lines. General Agents can also extend online rating capabilities to their retail agencies via web services or branded retail portal, allowing custom solutions tailored to agency needs.

Named customers1 record

Segments5 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

One partnership is on record.

• Strickland Insurance Group (SIG)coreStrategic or Co-development Partner · 1 January 1983Atlantic Casualty Insurance Company was established by Strickland Insurance Group (SIG) in 1983 to underwrite a significant portfolio of non-standard personal auto insurance. By the late 1990s, this portfolio had grown to over $100 million in premiums across seven states. SIG originally founded the company before the 2016 acquisition by Auto-Owners.

Scale indicators6 records

Recent moves7 records

Expansion highlights5 records

Direct peers

• Scottsdale Insurance Company: A Nationwide subsidiary specializing in E&S Lines commercial products distributed through wholesale brokers. Closely comparable to Atlantic Casualty in product mix (GL, property, commercial auto/garage) and exclusive wholesale broker distribution model.
• Kinsale Capital Group: Publicly traded specialty Excess & Surplus Lines insurer focused on small-to-middle market commercial risks with proprietary technology-enabled underwriting. Highly comparable to Atlantic Casualty in E&S specialty positioning, broker/wholesale distribution, and emphasis on hard-to-place commercial risks.
• Admiral Insurance Group: A W.R. Berkley subsidiary underwriting specialty E&S Lines including commercial property, GL, and excess. Directly comparable to Atlantic Casualty as a specialty E&S carrier distributed through wholesale partners within a larger insurance group.
• Capitol Specialty Insurance Corporation: Specialty E&S Lines carrier writing hard-to-place commercial property, GL, inland marine, and umbrella risks via wholesale brokers. Direct comparable in product mix, distribution model, and target risk classes.
• James River Group Holdings: Holding company with James River Insurance operating as an E&S specialty commercial carrier. Comparable in target market of non-admitted small-to-middle market commercial accounts and wholesale distribution focus.

Broad incumbents

• Berkshire Hathaway Specialty Insurance: Large specialty insurance carrier writing commercial property, GL, marine, and excess across multiple territories. Comparable as a well-capitalized specialty competitor with broader scale but overlapping target classes.
• Markel Group: Large specialty insurer with significant E&S Lines presence across multiple product lines including marine, property, and GL. Broader and more diversified than Atlantic Casualty but overlapping in specialty risk appetite and wholesale distribution.
• Crum & Forster: Specialty P&C insurance group underwriting through multiple carriers including E&S Lines products for commercial property, GL, and marine. Comparable as a larger specialty carrier with overlapping product lines but broader portfolio.

Others

• Burns & Wilcox: Largest specialty wholesale insurance broker in North America, distributing E&S products from multiple carriers to retail agents. Directly comparable as a wholesale distribution counterpart that ACIC competes with for MGA relationships and similar product placement.
• Risk Placement Services (RPS): Specialty wholesale broker and MGA distributing E&S Lines products including commercial property, GL, and inland marine. Comparable as a wholesale distribution partner/competitor relevant to ACIC's go-to-market motion.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/atlantic-casualty-insurance-co-

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles16 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Atlantic Casualty Insurance