# Interface Systems: Security & investigations, St. Louis, United States

> Interface Systems: Interface Systems is a managed service provider based in St. Based in St. Louis, United States. Founded 1995.

Source: https://millionrounds.com/startup/interface-systems (Millionrounds; every figure on the page links to its filing or article)

United States · [Security & investigations startup](https://millionrounds.com/companies)

# Interface Systems

Interface Systems is a managed service provider based in St.

Funding reported Last round: Private equity

Security & investigations St. Louis, United States

Company summary

- **Founded:** 1995 31 years old
- **Team:** 620 201 to 1,000 people
- **Funding reported:** $200M in dollars
- **Last round:** Private equity Jan 2021

How sure we are

- ✓ **Listed** We know it exists and what it does
- 2 **Funding reported** A company dataset reports a raise
- 3 **Observed** A filing or a dated announcement confirms a round

No round for Interface Systems has been confirmed by a filing or an announcement yet, so nothing here counts toward an investor's record. [How we decide](https://millionrounds.com/methodology)

## About Interface Systems

Interface Systems is a managed service provider based in St.

Louis, Missouri, specializing in business security, actionable insights, and purpose-built networks for multi-location enterprises. Founded in 1995, the company serves around 65,000 customer locations across the United States, focusing on sectors such as retail, restaurant, hospitality, and finance. The company offers a comprehensive range of services, including interactive remote video monitoring, managed access control, intrusion alarm systems, and lone worker safety. Additionally, Interface Systems provides network solutions like SD-WAN and wireless WAN, along with unified communications and business intelligence tools. Their technology partnerships and command-and-control centers enhance security and operational efficiency for their clients, which include well-known brands like Michael’s, Swatch, and Applebee’s.

## What company datasets say Interface Systems raised

Funding, as reported

Reported in all **$200M** in dollars

Rounds **6**

Last round **Private equity**

Last round size **$60M**

Last round date **Jan 2021**

Investors listed **5**

## Founders and team

From Interface Systems's own website: 6 on the team.

- **Brent Duncan** Chief Executive Officer
- **Bud Homeyer** Chief Operations Officer
- **Casey Jones** Chief Transformation Officer
- **Sean Foley** Chief Revenue Officer
- **Sunita Mani** Chief Marketing Officer
- **Clay Campbell** SVP, People & General Counsel

## The company, in detail

What they build

Known for

managed security services wireless wan marketing other scientific and technical consulting services banking & financial services information technology & services logistics & supply chain exterior video monitoring financial services finance managed access control life safety loss prevention managed network operational efficiency video analytics

Built with from their website

Azure Devops AT&T DNS Salesforce CRM Analytics Atlassian Power Query WOW Microsoft Windows LinkedIn Ads Copilot IBM HTTP Server

+8 more

Network Solutions Excel4Apps OwnerIQ.NET Oracle SPF Apple Business Manager Trello Avaya UCaaS

- **Sector:** Security & investigations
- **Industry code:** NAICS 54169, 561621, 541512, SIC 7389, 7382, 7373
- **Region:** Missouri
- **Revenue:** $121M a year, as listed
- **Full record:** [Every detail in the company directory](https://millionrounds.com/directory/interface-systems)

## Security & investigations in United States

Startups like it

- [**Onyx Security** Richmond · founded 2009 *Raised*](https://millionrounds.com/company/onyx-security)
- [**4iQ** Los Altos · founded 2016 *Raised*](https://millionrounds.com/company/4iq)
- [**Building Intelligence** New York · founded 2006 *Raised*](https://millionrounds.com/company/building-intelligence)
- [**Base Operations** Washington · founded 2019 *Raised*](https://millionrounds.com/company/base-operations)
- [**Global Networks Inc** Columbia · founded 2008](https://millionrounds.com/startup/global-networks-inc)
- [**Grayshift** Roswell · founded 2016](https://millionrounds.com/startup/grayshift)
- [**Decision Sciences Inc** Poway · founded 2006](https://millionrounds.com/startup/decision-sciences-inc)
- [**MPCH** New York · founded 2021](https://millionrounds.com/startup/mpch-2)

## Is this your company?

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