Harbour Group

What Harbour Group does

Harbour Group Industries, Inc. is a privately held, family-owned operating company headquartered in St. Louis, Missouri, founded in 1976. It acquires and operates manufacturing and distribution businesses using permanent capital — its own after-tax dollars rather than fund-raised investment — targeting lower-middle market companies with enterprise values typically between $20 million and $500 million and EBITDA between $4 million and $50 million for new platforms, with add-on acquisitions at any size. Over nearly 50 years the company has completed 235 acquisitions across 50 industries, retaining management teams and applying a standardized set of operational tools (Lean, Six Sigma, CRM, S&OP, cascading objectives) via a team that is two-thirds senior operating professionals averaging nearly 26 years of experience.

The current portfolio spans more than 50 operating companies organized into functional platforms, including SpotSee (condition monitoring — shock, tilt, vibration, temperature, humidity — under brands such as ShockWatch, ShockLog, WarmMark, ColdMark, TiltWatch, HemoTemp), ACS Group (material processing equipment), Marshall Excelsior (LPG/NH3/cryogenic flow control), Control Solutions (industrial controls — Cattron, LOFA, Tyro, DynaGen), Phillips & Temro (thermal management), Phillips & Temro's EVoCharge (EV charging), Stainless Hose Fittings and Texcel (industrial fluid handling), CPS Products (HVAC/R tools), Lindstrom/Stelfast (fastener distribution), ONICON (flow metering), Americo Chemical/Fusion Chemical (metalworking fluids), DecksDirect/DIY Home Center (deck building products e-commerce), Groomer's Choice/Showseason (pet grooming supplies), SP Industries/i-Dositecno (pharma fill-finish equipment), ILP/Green Creative/SloanLED/Watchfire (LED lighting), Thibaut (wallcoverings/furniture), Meade (precision optics), Merit Industries/AMI/NSM (digital jukeboxes), and several others. Operating geographies span the United States, Canada, Mexico, the United Kingdom, the Netherlands, Spain, Ireland, India, and China.

The business model combines acquisition-driven platform building (235 deals, 180 of which were strategic add-ons) with operational improvement delivered by in-house operating teams and a wide distribution network that includes direct B2B sales (e.g., SpotSee to 4,500+ customers across 62 countries), distributor networks (Lindstrom, Stelfast), and direct-to-job-site/consumer e-commerce (DecksDirect). Revenue is generated through product sales, equipment manufacturing, distribution services, and specialty chemical products across portfolio companies; terms of acquisitions and product pricing are not publicly disclosed.

Name

Harbour Group

Legal name

Harbour Group Industries, Inc.

Website

http://harbourgroup.com

Company type

Private

Founded year

1976

Operating status

Operating

Headcount range

11–50 employees

Short description

Harbour Group Industries is a privately held, family-owned operating company founded in 1976 in St. Louis that acquires and runs manufacturing and distribution businesses using permanent capital, supporting more than 50 portfolio companies across roughly 50 industries via operational, financial, and talent resources.

Ownership category

akta.pro rank

Headquarters

HQ city

St Louis

HQ country

United States

HQ region

North America

Offices19 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Supply Chain, Personnel, Operations, Infrastructure, Marketing or Sales

Revenue model

1. Portfolio Company Operations: Harbour Group acquires and operates companies across manufacturing and distribution industries. Their portfolio companies generate revenue through product sales, equipment manufacturing, distribution services, and specialty chemical products.
2. Acquisition-based Growth: The company grows through acquisitions of complementary businesses. They invest their own after-tax dollars into businesses, creating value through operational excellence, strategic support, and shared achievement over the long term.

Go-to-market motion2 records

Distribution channels4 records

Marketing channels4 records

Core offering

Harbour Group is a family-owned private operating company that acquires and operates manufacturing and distribution businesses across 50+ industries using permanent (own) capital. It provides portfolio companies with operational, financial, acquisition, and talent-development resources, generating revenue through the products and equipment those operating companies sell.

Product overview

Harbour Group is a family-owned private operating company that acquires and manages manufacturing and distribution businesses across 50+ industries. Rather than a single unified product platform, Harbour Group operates a diversified portfolio of distinct companies, each serving different market segments. The portfolio includes condition monitoring solutions (SpotSee platform with ShockWatch, ShockLog, WarmMark, ColdMark, TiltWatch, and temperature indicator brands like HemoTemp, ThermoStrip, and Thermax), material processing equipment (ACS Group under AEC, Sterling, Cumberland, Wabash brands), specialty chemicals (Americo and Fusion for metalworking fluids and lubricants), pet grooming products (Groomer's Choice and Showseason), outdoor living products (DecksDirect, DIY Home Center), industrial flow control components (Stainless Hose Fittings, Texcel, OmegaOne, Marshall Excelsior), machine control and telemetry solutions (Cattron/Control Solutions Group), thermal management systems (Phillips & Temro), professional tools (CPS Products for HVAC/R), fastener distribution (Lindstrom), flow metering (ONICON), specialty hardware (Nationwide Industries), LED lighting (ILP Holdings, Green Creative, SloanLED, Watchfire), pharmaceutical equipment (SP Industries), and wallcoverings (Thibaut).

Differentiator

Problem solved

Functional benefit

Brands

• Americo Chemical Products: Supplier of specialty chemicals focusing on metal surface treatment and wastewater applications
• ACS Group
• SpotSee
• Groomer's Choice
• DecksDirect
• Stainless Hose Fittings (SHF)
• Cattron
• Phillips & Temro
• CPS Products
• Lindstrom
• Marshall Excelsior
• ILLUMUS
• ONICON
• Nationwide Industries (NWI)
• Control Solutions

Products and services

• SpotSee Global leader in condition-indicating and monitoring solutions for supply chain integrity—temperature, shock, tilt, vibration, humidity and liquid-detection devices with visual, RFID, QR, cellular or satellite connectivity. Serves life sciences, aerospace/defense, food safety and industrial customers.
• ACS Group Manufacturer of material processing equipment under brands AEC, Sterling, Sterlco, Cumberland, MiVue, Wabash and Carver, serving plastics, recycling, food and pharmaceutical applications including size reduction, conveying, temperature control and press operations.
• Americo Chemical Products Provider of specialty chemicals for metal surface treatment and wastewater treatment applications, headquartered in Elgin, IL.
• Groomer's Choice Manufacturer and one-stop-shop distributor of professional pet grooming supplies including shampoos, conditioners, sprays, colognes, bathing equipment, grooming tools, apparel, accessories, toys and treats.
• DecksDirect Direct-to-job-site distributor of premium deck products through an e-commerce platform offering composite decking, railing, lighting and deck accessories.
• Stainless Hose Fittings (SHF) Manufacturer and supplier of stainless-steel adapters, fluid power fittings, instrumentation fittings and valves serving marine, industrial, chemical and oil & gas markets.
• Cattron Machine control and telemetry solutions including wireless controls, emergency stop solutions, automation and connectivity, sensors and IoT for global transportation, mobile equipment and industrial applications.
• Control Solutions Group Comprehensive control solutions platform providing operator, machine, engine control, process automation and telemetry under Cattron, LOFA, Tyro and DynaGen brands.
• Phillips & Temro Supplier of thermal management systems and controls including immersion, circulation and air-intake heaters, engine cooling equipment and cab heating/cooling products for transportation and heavy equipment markets.
• CPS Products Supplier of professional-grade analytical and repair tools, HVAC/R repair and replacement parts for professional technicians servicing commercial HVAC/R and automotive AC systems.
• Lindstrom Master distributor of metric fasteners and specialty parts with multiple North American distribution locations, offering specialty plating and packaging services.
• ONICON Designer and manufacturer of energy and flow metering devices including turbine, vortex, electromagnetic, thermal mass and ultrasonic meters and BTU meters for water, steam, gas and compressed air applications.
• Nationwide Industries (NWI) Supplier of specialty hardware to OEMs, distributors and installers in fence/gate, railing and patio markets under Nationwide, Ultra-Tec, RailFX and LockeyUSA brands.
• Marshall Excelsior Company Designer, manufacturer and supplier of mission-critical flow control products including fittings, adapters, valves, regulators, pigtails and gauges for LPG, NH3 and cryogenic applications.
• ILP Holdings / ILLUMUS Manufacturer of energy-efficient LED luminaires and retrofit solutions for commercial, industrial and outdoor applications.
• SP Industries Global provider of fill-finish drug manufacturing solutions, laboratory equipment, freeze dryers and specialty glassware for pharmaceutical, scientific, industrial and healthcare applications.
• Thibaut Global brand in wallcoverings, fabrics and upholstered furniture featuring designs under Thibaut, Anna French and Thibaut Fine Furniture brands for high-end residential interior designers.
• Texcel Branded supplier of premium quality industrial hoses, fluid sealing and hydraulic products and services, operating from facilities in Texas, Illinois, Delaware, Alabama and Colorado.

Quantifiable outcome

• Nearly tripling the number of salespeople in Watchfire business through long-term growth investment
• +3 more outcomes

Named customers6 records

Segments3 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

Scale indicators16 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Berkshire Hathaway: The canonical permanent-capital, family-controlled industrial holding company. Berkshire's decentralized operating model — where each subsidiary operates with significant autonomy while benefiting from parent-level capital and oversight — directly mirrors Harbour Group's structure across 50 industries. Comparable on ownership model, holding-company philosophy, and buy-and-hold approach to acquisitions.
• Koch Industries: A privately held, family-controlled diversified industrial conglomerate operating across manufacturing, chemicals, and process technologies. Like Harbour Group, Koch invests permanent capital, emphasizes decentralized operating autonomy, and has grown through long-term ownership of manufacturing businesses — making it a structural analogue despite its much larger scale.
• Roper Technologies: A publicly traded diversified technology and industrial holding company that acquires and operates niche product-focused businesses across many verticals. While much larger and public, Roper's strategy of acquiring profitable, asset-light industrial leaders with high recurring revenue is the closest public-market analogue to Harbour Group's portfolio approach.
• Danaher Corporation: A diversified industrial and life-sciences holding company with a proven playbook (DBS — Danaher Business System) of operational improvement across acquired businesses. While Danaher operates at a much larger scale, its systematic operational toolkit applied across diversified manufacturing acquisitions is structurally comparable to Harbour Group's 250+ operating system implementations.

Direct peers

• Pritzker Private Capital: A family-office-backed industrial holding company that partners with middle-market manufacturing, distribution, and business services companies. Pritzker Private Capital uses permanent capital and an operational-improvement approach very similar to Harbour Group's, targeting many of the same lower-middle market industrial niches with $20M-$500M EV ranges.
• Wynnchurch Capital: A middle-market private equity firm focused exclusively on industrial and manufacturing businesses, with a value-oriented, operationally intensive approach comparable to Harbour Group's. Targets similar company sizes and operates with similar operational-improvement playbooks, making it a close peer in deal sourcing and value creation style.
• SK Capital Partners: A private investment firm focused on the specialty materials, chemicals, and industrial sectors, investing across manufacturing and distribution businesses comparable to Harbour Group's Americo, Fusion Chemical, and ACS Group platforms. Similar deal-size range and operationally focused approach.
• Stonepeak Partners: An investment firm specializing in industrial and infrastructure businesses with a long-duration capital base. While larger in check size, Stonepeak's industrial focus and willingness to hold through cycles mirrors Harbour Group's permanent-capital approach to manufacturing and distribution assets.
• Genstar Capital: A middle-market private equity firm investing in industrial technology, specialty manufacturing, and business services companies. Targets comparable deal sizes to Harbour Group and emphasizes operational improvement through operating partner networks — making it a direct competitor for similar lower-middle market industrial assets.
• Platte River Equity: A lower-middle market private equity firm focused on industrial manufacturing and distribution businesses with an operationally intensive value-creation model. Targets similar EBITDA ranges ($4-$50M) and industries (specialty manufacturing, distribution, industrial services) as Harbour Group's investment criteria.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks7 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/harbour-group

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 records

Subsidiaries55 records

Funding overview

Funding rounds2 records

Investors

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

M&A21 records

Investments1 record

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

Frequently asked questions about Harbour Group