STT Security
STT Security Services is a privately held security guard and investigations firm providing unarmed contract security, private investigation, consulting, and training across 11 industry verticals to enterprise and mid-market clients in the United States.
- Company typePrivate
- Founded1973
- HeadquartersMount Pleasant, United States
- Headcount101–250
- GTM typeB2B
- OfferingServices
What STT Security does
STT Security Services is a privately held, employee-centered security services company founded in 1973 by David Rusch and headquartered in Mt. Pleasant, Michigan. The company provides unarmed security guard services, investigative services, security consulting, and business loss prevention across 11 industry verticals — Healthcare, Data Center, Industrial Plant, Warehouse/Logistics, Construction/Solar/Wind, College/University/School, Business/Commercial, Food Production, Security Screening, Executive Protection, and Employee Discharge — for enterprise and mid-market clients. STT holds state licensing in Michigan, Illinois, New Mexico, and Texas, claims nationwide service delivery, and employs over 400 staff members across its operations. Leadership includes second-generation family ownership (CEO David Rusch, Partner Calvin Rusch), VP of HR and Finance Denise Robertson (20-year tenure), Director of Investigative Services Jim Dominowski (30+ years, classified as an Expert Witness by the Michigan Court System), and other long-tenured directors and regional managers.
The core offering is contract-based, customized unarmed security guard services delivered through a sales-led model with quote-based pricing, free consultations, and multi-year contract structures. Distribution is direct: toll-free phone (800-860-1788), website quote forms (sttsecurity.com/get-quote), and consultation-based field sales targeting enterprise and mid-market buyers. STT operates proprietary technology as its differentiator at the operating layer — electronic tour verification systems for patrol accountability, electronic officer monitoring, and proprietary reporting software for daily activity, incident reports, statistics, and timekeeping delivered to clients electronically. The Investigative Services division operates as a parallel professional-services stream providing background checks, surveillance, process serving, fraud investigation, and witness location services.
Revenue mechanics are split between managed services (unarmed guards via multi-year contracts with on-site assignment of officers matched to skill and industry) and professional services (investigations on a project basis). The company markets itself on its employee-centered culture, length of tenure, training rigor (de-escalation, conflict resolution, situational awareness, active assailant), and 30+ year affiliation with ASIS International (with CEO Rusch chairing the Saginaw Valley Chapter). Ownership remains family-controlled with no external institutional investors, no funding rounds, no disclosed M&A, and explicit intent to remain independent — positioning STT as a stable, organically-grown regional-to-national security firm rather than a venture-backed or roll-up platform.
STT Security firmographics
Firmographics- Name
- STT Security
- Legal name
- STT Security Services
- Website
- https://sttsecurity.com
- Company type
- Private
- Founded year
- 1973
- Operating status
- Operating
- Headcount range
- 101–250 employees
- Short description
- STT Security Services is a privately held security guard and investigations firm providing unarmed contract security, private investigation, consulting, and training across 11 industry verticals to enterprise and mid-market clients in the United States.
- Ownership category
- akta.pro rank
STT Security industry classification
Industry- Product category
- Contract Security Services
- NAICS
- Investigation, Guard, and Armored Car Services (56161), Security Guards and Patrol Services (561612), Investigation and Personal Background Check Services (561611), Investigation and Security Services (5616)
- SIC
- Services-Detective, Guard & Armored Car Services (7381)
- akta.pro primary industry
- Manned Guarding & Patrol Services (IMAIAEAA)
Keywords
Where STT Security is headquartered
LocationHeadquarters
- HQ city
- Mount Pleasant
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
STT Security business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure
Revenue model
- Security Guard Services: Contract-based unarmed security guard services providing customer service, enforcement of policy, monitoring of cameras, controlling access, foot and vehicular patrols, threat assessment, reporting and de-escalation. Services are customized for each client assignment with both short-term event and long-term contract options.
- Investigative Services: Private investigation services including background checks, surveillance, process serving, general surveillance, and discreet protective services. Offered through their Investigations division.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Customized Security Solutions |
Go-to-market motion1 record
Distribution channels4 records
Marketing channels7 records
STT Security product offering
Product offeringCore offering
STT Security Services delivers unarmed uniformed security guard services, private investigative services, executive protection, employee termination security, and security consulting across 11+ industry verticals in the United States. Founded in 1973 and headquartered in Mt. Pleasant, Michigan, the firm deploys 400+ trained security professionals to healthcare, education, industrial, data center, warehouse, construction, food production, and commercial clients, supported by proprietary officer monitoring, electronic tour verification, and reporting technology.
Product overview
STT Security is an employee-centered security services company operating as a single unified offering portfolio rather than a platform-plus-modules architecture. The core product is unarmed Security Guard Services, which is customized across 11 specialized industry verticals including Healthcare, Data Center, Industrial Plant, Warehouse/Logistics, Construction/Solar/Wind, College/University/School, Business/Commercial, Food Production, Security Screening, Executive Protection, and Employee Termination. Supporting services include Investigative Services (private investigations, background checks, surveillance), Security Consulting, and Business Loss Prevention Services. The company also deploys proprietary technology platforms including an Electronic Reporting Software system for incident reporting, statistical analysis, and timekeeping, plus an Electronic Tour Verification System for patrol monitoring.
Differentiator
Problem solved
Functional benefit
Products and services
- Security Guard Services Core uniformed unarmed security guard services deployed to client sites across multiple industries in the United States, supported by proprietary officer monitoring and reporting technology.
- Healthcare Security Guard Services Specialized unarmed guard services for healthcare facilities such as hospitals, clinics, and medical campuses, including de-escalation-trained officers for patient and staff safety.
- Data Center Guard Services Security guard services tailored for data center and high-security technology infrastructure environments, often paired with screening services to control access.
- Security Screening Guard Services Visitor and contractor screening guard services for high-security sites such as data centers and other controlled-access facilities.
- Industrial Plant Security Guard Services Guard services for industrial plant and manufacturing environments, including perimeter, access, and asset protection under shift-based coverage.
- Warehouse and Logistic Security Guard Services Guard services for warehouses, distribution centers, and logistics operations, including dock and yard security and inventory loss prevention.
- Construction, Solar, and Wind Project Security Guards Site security services for active construction, solar, and wind energy projects, including equipment and material theft deterrence at remote or variable outdoor sites.
- College, University, and School Security Guards Guard services for K-12 schools, colleges, and universities, including student safety, access control, event coverage, and after-hours facility protection.
- Business and Commercial Security Guard Services Guard services for commercial businesses and corporate offices, including lobby, access control, and premises protection.
- Food Production & Processing Security Guard Services Guard services for food production and processing facilities, with officers trained in food-safety protocols and controlled access in sensitive production areas.
- Employee Termination Security Guard Services Security guard services deployed to support workplace involuntary terminations, including on-site presence to deter escalation and protect personnel.
- Executive Protection Services Personal protective services for executives, public figures, and high-net-worth individuals, providing close protection and secure travel support.
- Investigative Services Private investigation services for corporate, legal, and individual clients, covering confidential inquiries, evidence gathering, and case management.
- Security Consulting Services Advisory and security consulting engagements for organizations needing risk assessments, program design, and security strategy input.
- Business Loss Prevention Services Loss-prevention-focused security services for retail and other commercial clients, addressing shrinkage and inventory protection.
Quantifiable outcome
- Areas with uniformed security reported a 16% decrease in crime and 49% increase in police-generated detections (Cambridge University study referenced)
Companies that use STT Security
Customer profileNamed customers5 records
Segments11 records
Ideal customer profiles9 records
STT Security technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature3 records
STT Security partnerships and signals
Strategic signalPartnerships
Four partnerships are on record, tiered core and minor.
- ASIS InternationalcoreSTT Security has been affiliated with ASIS International for over 30 years. CEO David Rusch serves as Chairman of the Saginaw Valley Chapter of ASIS. STT participates in career awareness programs exposing students to security industry careers and promotes excellence in security management profession.
- Protective Technologies International (PTI)minorSTT partners with PTI for comprehensive multilevel security programs combining PTI's sensitive metal detectors with STT's trained security personnel. PTI manufactures high-quality walk-through metal detectors trusted in precious metals, mining, and refinery industries. Combined expertise provides comprehensive security solutions.
- Saginaw Valley ASIS ChaptercoreLocal Saginaw Valley Chapter of ASIS where STT CEO David Rusch serves as Chairman. Chapter brings together security professionals from companies including Dow Corning, Hemlock Semiconductor, Dow Chemical, and ETEC to provide networking and career opportunities for students.
- Delta CollegeminorEducational partner where STT Security and Saginaw Valley ASIS Chapter hosted Security Career Awareness Program exposing over 150 students from Delta College and Saginaw Valley State University to security industry careers.
Scale indicators5 records
Recent moves6 records
Expansion highlights5 records
STT Security competitors and assessment
Company assessmentDirect peers
- American Guard Services: Multi-state contract security provider offering uniformed guarding, event security, and executive protection — direct small/mid-cap comparable.
- APSI Security & Protection: Niche US security provider focused on healthcare, government, and educational facility guarding — overlapping vertical specialization with STT.
- Bryant Security: Regionally focused contract security guard provider with overlapping service portfolio including executive protection and investigative services.
- National Security Systems Inc. Mid-sized US uniformed security provider serving commercial, industrial, and institutional clients — comparable scale and service model to STT.
- Walden Security: Privately held US contract security services provider with similar geographic spread and vertical diversification across healthcare, education, and government.
- U.S. Security Associates: Mid-scale US contract guarding firm serving commercial, industrial, healthcare, and educational facilities — comparable size and vertical mix to STT.
Broad incumbents
- GardaWorld Security Services: Large North American security guarding and cash services provider competing across industrial, commercial, and specialized verticals — directly comparable business model and customer mix.
- Securitas AB: Global contract security guarding leader with extensive US operations across healthcare, data centers, education, and industrial verticals — the closest multinational parallel to STT's vertical-by-vertical go-to-market.
- G4S (now part of Allied Universal): Historically one of the largest manned security providers globally, with US guarding operations serving many of the same facility-type end markets as STT.
- Allied Universal: The largest contract security services provider in North America, offering manned guarding across commercial, industrial, and government segments — directly comparable end-market overlap to STT but at vastly greater scale.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat4 records
Key risks4 records
Key highlights6 records
Customer concentration
STT Security social profiles
Digital presenceSTT Security financial estimates
Financial estimateRevenue estimate
Valuation estimate
STT Security leadership team
Management profileNumber of profiles
Profiles11 records
STT Security funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
STT Security M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about STT Security
What does STT Security do?
STT Security Services delivers unarmed uniformed security guard services, private investigative services, executive protection, employee termination security, and security consulting across 11+ industry verticals in the United States. Founded in 1973 and headquartered in Mt. Pleasant, Michigan, the firm deploys 400+ trained security professionals to healthcare, education, industrial, data center, warehouse, construction, food production, and commercial clients, supported by proprietary officer monitoring, electronic tour verification, and reporting technology.
Is STT Security a public or private company?
STT Security is a private company. It is classified as family owned and is currently operating.
When was STT Security founded?
STT Security was founded in 1973. It employs 101 to 250 people.
Where is STT Security based?
STT Security is headquartered in Mount Pleasant, United States, in the North America region.
How does STT Security make money?
Two revenue lines are on record. Security Guard Services are the primary driver. The others are investigative Services.
Who are STT Security's main competitors?
Direct peers on record are American Guard Services, APSI Security & Protection, Bryant Security, National Security Systems Inc., Walden Security and U.S. Security Associates. Broad incumbents are GardaWorld Security Services, Securitas AB, G4S (now part of Allied Universal) and Allied Universal.
Does STT Security have an API?
No public API is recorded for STT Security.
What industry is STT Security in?
STT Security's product category is Contract Security Services. Its primary akta.pro industry code is IMAIAEAA, Manned Guarding & Patrol Services. Its NAICS code is 56161 and its SIC code is 7381.