What is Southern Insurance Underwriters, Inc.'s NAICS code?

Southern Insurance Underwriters, Inc.'s NAICS code is 524 (Insurance Carriers and Related Activities).

Insights

Specialized MGAs SIU is a long-standing, family-owned MGA with a focus on hard to place, specialty and excess & surplus lines, presenting opportunities to cross-sell niche coverages and retained risk programs to mid-market and specialty clients.

Growth & Hiring Active expansion in underwriting capabilities evidenced by recent hires across garage, professional, marine, property, casualty and workers’ comp lines signals potential for selling more comprehensive coverage packages and enhanced risk services to existing insureds and new prospects.

Strategic Partnerships Strong involvement with major industry associations (AAMGA, NAPSLO, PIA chapters) indicates networking channels and distribution partnerships to access new agency relationships and broker-led opportunities.

Tech & Efficiency Adopted tech stack including Sage Intacct, HubSpot, Pardot, and Azure suggests readiness for data-driven underwriting, digital quoting, and integrated CRM outreach to streamline prospecting and policy servicing.

Financial Scale Revenue range of 250 to 500 million positions SIU as a substantial partner for mid to large accounts seeking stable capacity, specialized product lines, and scalable E&S solutions with potential for capacity expansion and program development.

Similar companies to Southern Insurance Underwriters, Inc.

RUHL INSURANCE, a Division of Horst Insurance
7$50M - $100M

Southern Insurance Underwriters, Inc. Tech Stack

Southern Insurance Underwriters, Inc. uses 8 technology products and services including Sage Intacct, HubSpot Analytics, WordPress, and more. Explore Southern Insurance Underwriters, Inc.'s tech stack below.

Sage Intacct
Accounting
HubSpot Analytics
Analytics
WordPress
Content Management System
Shopify
E-commerce
ADP
Human Resource Management System
LiveChat
Live Chat
Pardot
Marketing
Microsoft Azure
Platform As A Service

Media & News

Southern Insurance Underwriters, Inc.'s Email Address Formats

Southern Insurance Underwriters, Inc. uses at least 4 email formats:

Southern Insurance Underwriters, Inc. Email Formats	Example	Percentage
FLast@siuins.com	JDoe@siuins.com	92%
First.Last@siuins.com	John.Doe@siuins.com	6%
Last@siuins.com	Doe@siuins.com	1%
FMiddleLast@siuins.com	JMichaelDoe@siuins.com	1%

Frequently Asked Questions

What is Southern Insurance Underwriters, Inc.'s phone number?

You can contact Southern Insurance Underwriters, Inc.'s main corporate office by phone at

+1-678-498-****

. For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is Southern Insurance Underwriters, Inc.'s official website and social media links?

Southern Insurance Underwriters, Inc.'s official website is siuins.com and has social profiles on LinkedIn.

How much revenue does Southern Insurance Underwriters, Inc. generate?

As of August 2026, Southern Insurance Underwriters, Inc.'s annual revenue is estimated to be $250M - $500M.

What is Southern Insurance Underwriters, Inc.'s SIC code and NAICS code?

Southern Insurance Underwriters, Inc.'s SIC code is 6411 - Insurance Agents, Brokers, and Service and NAICS code is 524 - Insurance Carriers and Related Activities.

How many employees does Southern Insurance Underwriters, Inc. have currently?

As of August 2026, Southern Insurance Underwriters, Inc. has approximately 130 employees across 2 continents, including North America and Asia. Key team members include Chief Executive Officer: W. D., Chief Technology Officer: D. C. and Vice President - Marketing: B. J. Explore Southern Insurance Underwriters, Inc.'s employee directory with LeadIQ.

What industry does Southern Insurance Underwriters, Inc. belong to?

Southern Insurance Underwriters, Inc. operates in the Insurance industry.

What technology does Southern Insurance Underwriters, Inc. use?

Southern Insurance Underwriters, Inc.'s tech stack includes Sage Intacct, HubSpot Analytics, WordPress, Shopify, ADP, LiveChat, Pardot and Microsoft Azure.

What is Southern Insurance Underwriters, Inc.'s email format?

Southern Insurance Underwriters, Inc.'s email format typically follows the pattern of FLast@siuins.com. Find more Southern Insurance Underwriters, Inc. email formats with LeadIQ.

When was Southern Insurance Underwriters, Inc. founded?

Southern Insurance Underwriters, Inc. was founded in 1964.

Southern Insurance Underwriters, Inc.

InsuranceGeorgia, United States51-200 Employees

Southern Insurance Underwriters, Inc. is a mid-sized, family-owned managing general agency based in Alpharetta, Georgia, established in 1964. It offers a broad range of property, casualty, and transportation coverages and specializes in hard-to-place, specialty, and excess & surplus lines. With an experienced underwriting staff, it can handle risks from straightforward property policies to complex self-insured programs.

It participates in industry groups such as the American Association of Managing General Agents and the National Association of Professional Surplus Lines Offices, and it is active with independent agent and professional associations across Georgia, Alabama, Florida, and South Carolina. In 2022, SIU appointed Whitney Griffith as underwriter for garage insurance.