At a glance
| Latest fund | Quad-C Partners X, $1.7B (May 2022) S8 |
|---|---|
| Check size | $50M to $150M S2 |
| Deal types | Platform, Add-on S2 |
| Geography | North America S2 |
| Sectors | IT Services & MSP, Environmental & Waste, HVAC, Plumbing & Electrical, Construction Services, Distribution, Transportation & Logistics, Healthcare Services, Dental, Industrial & Manufacturing, Consumer & Food |
What Quad-C Management buys
Quad-C is a Charlottesville, Virginia firm, founded in 1989, that buys majority stakes in established middle market companies in two areas. On the services side it covers facility services such as HVAC and security, IT services and managed service providers, healthcare services, education, insurance and professional services. On the industrial side it covers specialty distribution, building products, industrial and environmental services, specialty manufacturing and chemicals, and transportation and logistics. It looks for enterprise values of $100 million to $500 million and writes equity checks of $50 million to $150 million across North America.
It is investing Fund X, a fund of about $1.7 billion closed in 2022, and says it has put $5.3 billion into 92 platforms and more than 425 add-ons. Many deals are recapitalizations of founder-owned companies in which management keeps a large stake. A smaller business is most likely to meet Quad-C as an add-on to a platform such as Flow Service Partners in commercial HVAC, SEI Group in insulation, Vortex in pipe rehabilitation or Accurate Meter & Supply in waterworks distribution.
Recent deals
Announced in the 24 months before October 19, 2026.
| Date | Company | Type | Sector | Source |
|---|---|---|---|---|
| Oct 2026 | Greenhome SpecialtiesUtah insulation installer added to SEI Group; the owner stays on as president | Add-on | Construction Services | Source |
| Sep 2026 | Contractors Risk ManagementAdded to Paradigm HSE weeks after Quad-C's investment | Add-on | Source | |
| Aug 2026 | Altman Air ConditioningSouth Florida commercial HVAC and mechanical contractor, founded 1985, added to Flow Service Partners | Add-on | HVAC, Plumbing & Electrical | Source |
| Aug 2026 | Paradigm HSEIndustrial health and safety services, training and equipment company with about 700 employees; management keeps significant ownership | Platform | Source | |
| Jul 2026 | The Stiles CompanyAdded to Accurate Meter & Supply | Add-on | Distribution | Source |
| Jun 2026 | Armstrong Transport GroupAgent-based freight brokerage founded in 2006; management keeps significant ownership | Platform | Transportation & Logistics | Source |
| May 2026 | ThibautWallcovering and fabric design house dating to 1886 | Platform | Distribution | Source |
| Mar 2026 | Dane StreetIndependent medical exam and peer review provider | Platform | Healthcare Services | Source |
| Mar 2026 | ELEMENT Engineering GroupFirst platform in 4CE's civil engineering network | Add-on | Source | |
| Mar 2026 | eDiscovery AIAdded to HaystackID | Add-on | Source | |
| Jan 2026 | Priebe Security ServicesCentral Texas security services company added to Marksman Titan Security Group | Add-on | Source | |
| Oct 2025 | PrimeLine ProductsAdded to Vortex | Add-on | Construction Services | Source |
| Oct 2025 | Weber Refrigeration & HeatingWestern Kansas HVACR company added to Flow Service Partners | Add-on | HVAC, Plumbing & Electrical | Source |
| Sep 2025 | Accurate Meter & SupplyKaty, Texas waterworks distributor founded in 1988; the founders and management keep significant ownership | Platform | Distribution | Source |
| Aug 2025 | O6 EnvironmentalSt. Louis remediation, industrial cleaning, liquid waste and waste disposal company | Platform | Environmental & Waste | Source |
| May 2025 | ForactionQuebec watermain rehabilitation contractor added to Vortex | Add-on | Construction Services | Source |
| Apr 2025 | Prism Contractors & EngineersAdded to Vortex | Add-on | Construction Services | Source |
| Apr 2025 | McAllister GroupUK business added to Vortex | Add-on | Construction Services | Source |
| Apr 2025 | Tax Protection PlusWinston-Salem tax audit defense provider; the management team stays and holds a significant stake | Platform | Accounting & Professional Services | Source |
| Apr 2025 | PRISM VisionOphthalmology and retina management services group sold to McKesson | Exit | Healthcare Services | Source |
| Feb 2025 | Sacramento InsulationAdded to SEI Group | Add-on | Construction Services | Source |
| Jan 2025 | @propertiesReal estate brokerage, with Christie's International Real Estate, sold to Compass | Exit | Source | |
| Nov 2024 | Flow Service PartnersCommercial HVACR and plumbing services company in the Midwest, Southeast and Mid-Atlantic | Platform | HVAC, Plumbing & Electrical | Source |
Portfolio by sector
From the firm's portfolio page S6.
Business & Consumer Services
- Apps Associates Current
- Astrix Current
- Dane Street Current
- Flow Service Partners Current
- HaystackID Current
- K12 Coalition Current
- Marksman Titan Security Group Current
- Paradigm HSE Current
- Specialized Dental Current
- Synoptek Current
- Tax Protection Plus Current
Industrials
- 4CE Current
- Accurate Meter & Supply Current
- Armstrong Transport Group Current
- Boulder Scientific Company Current
- Catapult Current
- Legacy Food Group Current
- O6 Environmental Current
- QED Technologies Current
- SEI Group Current
- Textum Current
- Thibaut Current
- Village Gourmet Current
- Vortex Current
Past investments: @properties, A. Stucki Company, Acoustical Material Services, AIT Worldwide Logistics, Asset Acceptance Capital Corp., Augusta Sportswear Group, Balboa Water Group, Behavioral Interventions, Capital Tool & Design / Util, Caribbean Restaurants, Century Graphics Corporation, Cloverhill Bakery, Colibri, Compassion-First Pet Hospitals, Curvature, Dental Care Alliance, Document Technologies (DTI), Durcon, EFC International, Galleher, Generation Brands, Heartland Automotive Services, Huddle House, Inmark, InterWrap, Joerns Healthcare, Krayden, Lexicon Marketing, MNX Global Logistics, MW Industries, Network Global Logistics, NuSil Technology, Polaris Pool Holdings, Prism Vision Group, Rainbow Early Education, Red Robin Gourmet Burgers, Royal Adhesives & Sealants, S.i. Systems, Service Partners, Staff Leasing, Stanton Carpet, Stauber, Stimsonite Corporation, Tandus Flooring, TDS Logistics, Technimark, Transport Labor Contract/Leasing (TLC), United Piece Dye Works, Universal Fiber Systems, Vaco, VMG Health, Wolf, Worldwide Express
Greymont’s take
How Quad-C Management fits a seller
Quad-C suits founders of larger companies who want to take cash off the table now and keep a stake for a second sale later. Its approach page describes this kind of recapitalization, and its Fund X announcement said every platform in its two prior funds had significant rollover from founders and managers. Management usually keeps its roles after closing, while Quad-C works on strategy, acquisitions and systems rather than daily operations.
Most owners below its size range will meet Quad-C through one of its platforms buying them. Flow Service Partners, SEI Group and Vortex have each made several add-on deals since 2024. Owners should ask how much of the price would be paid in rolled equity, how the platform plans to fold in their team and brand, and how long Quad-C expects to hold the platform before its next sale.
Questions owners ask
Does Quad-C buy IT services companies or managed service providers?
Yes. IT services, including managed service providers and cybersecurity, is one of its stated services areas. Current holdings include Synoptek, an IT consulting and managed services provider it backed in 2022, and Apps Associates, an enterprise application services firm.
Does Quad-C invest in environmental or waste services?
Yes. In August 2025 it invested in O6 Environmental, a St. Louis company that handles environmental remediation, industrial cleaning, liquid waste processing, waste disposal and emergency response.
Is Quad-C too big for a smaller company?
Its platform deals target $100 million to $500 million of enterprise value, so most smaller businesses meet it as add-ons. The firm counts more than 425 add-on acquisitions across its platforms, including several in HVAC, insulation and pipe rehabilitation since 2024.
Do owners and managers stay after a Quad-C deal?
Usually. Quad-C says management's duties are typically unchanged after closing. In its 2025 and 2026 deals for Accurate Meter & Supply, Armstrong Transport Group and Paradigm HSE, the management teams stayed in their roles and kept significant ownership.
Sources
- S1Quad-C home page Accessed October 19, 2026
- S2Quad-C: Criteria Accessed October 19, 2026
- S3Quad-C: Approach Accessed October 19, 2026
- S4Quad-C: Services sector focus Accessed October 19, 2026
- S5Quad-C: Industrials sector focus Accessed October 19, 2026
- S6Quad-C: Portfolio Accessed October 19, 2026
- S7Quad-C: News Accessed October 19, 2026
- S8Quad-C Announces Fund X (May 25, 2022) Accessed October 19, 2026
- S9Quad-C Announces Investment in O6 Environmental (PR Newswire, August 12, 2025) Accessed October 19, 2026
- S10Quad-C Management Announces Investment in Paradigm HSE (PR Newswire, August 11, 2026) Accessed October 19, 2026
- S11Quad-C: Synoptek portfolio page Accessed October 19, 2026
Compiled by Greymont Advisors from public sources, including the firm’s own website and press releases. Greymont is not affiliated with Quad-C Management. Figures are as reported on the dates shown and may have changed. Request a correction