Experience you can stand on.

Successfully investing in exceptional lower middle market businesses for 20+ years.

Value creation you can build on.

Expertise and capabilities to deliver tailored operational, technology, sales, and financial results.

Partnership you can count on.

Working shoulder-to-shoulder with entrepreneurs to facilitate success for all stakeholders.

Innovative AI you can rely on.

In-house AI transformation team to create lasting competitive advantages for any business.

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Positioning Exceptional Businesses for the Future.


Southfield brings decades of successful investing and value-creation expertise, shoulder-to-shoulder partnership, and differentiated experience to ensure our portfolio companies are future-ready. We are dedicated to elevating lower-middle-market businesses by providing institutionalized capabilities and processes, utilizing technology and a bespoke AI transformation playbook to redefine value creation for entrepreneurs and management teams.


True partnerships, real outcomes.

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years investing in exceptional lower middle market companies

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investments with entrepreneur-built organizations

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of capital raised, currently investing out of our flagship fund, Southfield Capital IV

INVESTMENT CRITERIA

What We Look For

Southfield partners with entrepreneur-built business services companies in the lower middle market. We look for exceptional companies operating in non-discretionary, mission-critical industries that have a pathway to achieve meaningful growth through the implementation of Southfield’s value-creation pillars.

$4-20MM

Target EBITDA


$20-125MM

Equity investment size


* No size parameters for add-on acquisitions


PE experience you can stand on.
Partnership you can count on.
 

Successfully investing alongside founders and management in the lower middle market since 2002.

Combining institutional capabilities and cutting-edge innovation with a founder's mindset and vision.
innovatiVE AI TRANSFORMATION

Significant in-house AI transformation expertise, via Contextual, to drive efficiencies, increased revenue, and new services across virtually any business.

Operational Excellence

Our dedicated team implements robust financial planning, data analytics, and operational infrastructure to drive scale and informed decision-making.

Driving Organic Growth

We bring hands-on expertise in sales, marketing, and revenue optimization to help you capture market share and accelerate top-line growth.

TRansaction identification & support

Proven processes for identifying, executing, and integrating strategic acquisitions.


< For Business Owners

OUR PEOPLE

Ethos of no egos, no silos, no pretense.

Hand-in-hand approach leads to faster decision-making, deeper trust and lasting, differentiated results.


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IN THE NEWS

Recent Headlines

June 3, 2026
Sale Represents Successful Exit Following Significant Earnings Growth and Value Creation During Southfield’s Period of Investment Greenwich, CT – June 3, 2026 – Southfield Capital (“Southfield”), a premier lower middle market private equity firm, announced today that it has completed the sale of Milrose Consultants (“Milrose” or the “Company”), a leading national provider of code consulting, permit expediting, architecture and engineering, inspection services, and municipal real estate compliance solutions, to Littlejohn & Co. (“Littlejohn”). Terms of the deal were not disclosed. Since partnering with Southfield in 2019, Milrose has achieved significant growth, expanding from a NYC focused company to a leading nationwide provider with over 435 professionals operating from offices in all 50 states. During that time, Milrose increased its earnings by over 7x through the expansion of its sales platform, broadening its services offerings, recruiting a highly-talented management team, and successfully executing 14 strategic add-on acquisitions. Key members of the management team will remain shareholders in partnership with Littlejohn. Southfield’s continuation vehicle transaction with Milrose in 2023 provided existing investors with optional liquidity while reaffirming its conviction in the Company’s strong market position and management team’s long-term strategic growth vision. The sale to Littlejohn represents a successful exit for Southfield’s investors. “Southfield has been an exceptional value-add partner and trusted advisor throughout our time working together,” said Dominic Maurillo, CEO of Milrose since 2021. “Their thoughtful and collaborative approach, together with an unwavering commitment to investing in our people and infrastructure, have helped position Milrose for long-term success. We are grateful for their support and have appreciated their ability to provide a consistently valuable perspective while empowering and trusting us to execute on our growth and operational strategy.” “It has been a pleasure partnering with Dom and the entire Milrose team over the past several years,” said Chris Grambling, Partner at Southfield. “Together, we executed on a shared vision to scale the platform by expanding geographically, broadening the Company’s service offerings, and completing a number of strategic acquisitions to help evolve Milrose into a national leader in building code compliance and consulting. We are proud of what we accomplished alongside Milrose’s management team and believe the Company is well positioned for continued success in the next phase of its growth.” Solomon Partners served as lead financial advisor, Houlihan Lokey served as financial co-advisor, KPMG USA provided transaction advisory services, and Wiggin and Dana LLP served as legal advisor to Milrose in this transaction. About Southfield Capital Southfield Capital is a premier private equity firm with a foundational commitment to driving value at high-growth, lower middle market companies in the business services sector. The firm leverages its deep team of highly-experienced investment, technology and value-creation professionals, combined with fully-integrated AI-driven capabilities to partner with founders and manager-owned teams. For more information, please visit www.southfieldcapital.com About Milrose Consultants Milrose Consultants is the national leader in the field of building code consulting and municipal expediting with headquarters in New York City and offices nationwide. Customers rely on Milrose to provide end-to-end building compliance services that include permitting, code & zoning, regulatory filing, special inspections, façade inspections, due diligence & research, and other compliance solutions. Milrose provides high-end services across various large, growing industries, including commercial, multi-family residential, retail, industrial, healthcare, and academia. For more information, please visit www.milrose.com
April 27, 2026
Acquisition strengthens Protos’ overall integrated protection solutions offering through the addition of enhanced intelligence, executive protection, and consulting services Greenwich, CT – April 27, 2026 – Southfield Capital (“Southfield”), a premier lower middle market private equity firm, announced today that Security Services Holdings LLC, (“Protos”), a Southfield portfolio company and a leading national tech-enabled managed services security provider in North America, has acquired AT-RISK International (“AT-RISK”), a globally-recognized provider of executive and general protective services, intelligence, and risk consulting services. Since its founding in 2006, Protos has established itself as a leading tech-enabled managed security services provider with a unique service model that provides clients with access to a comprehensive security service network. The partnership with AT-RISK marks a significant milestone in Protos’ long-term strategy of building a category-leading, software-enabled integrated protection platform with substantial reach and a differentiated mix of high-value specialized services designed to address the increasingly complex and evolving security needs of its clients. By acquiring AT-RISK, Protos now has the ability to solidify its position as a market leading provider of off-duty and specialized services, as well as further advance its differentiated managed services provider model. AT-RISK, which was founded in 2013 and is headquartered in Washington D.C., brings deep domain expertise across risk consulting, investigations, threat assessments, global risk monitoring and protective services, including executive, residential, event, and asset protection. These capabilities enhance Protos’ existing platform and position the company to meet rising demand for intelligence-led, end-to-end security solutions among enterprise and high-net-worth clients. “This acquisition marks an important milestone in our growth strategy as we look to continue expanding our addressable market and tap into additional high-growth areas,” said Mark Hjelle, CEO of Protos. “AT-RISK’s specialized capabilities perfectly complement our existing platform, and our combined offering better equips us to continue providing industry leading solutions that allow our clients to navigate their evolving security needs.” Southfield Partner, Brandon Pinderhughes, commented, “Protos continues to execute on its disciplined acquisition strategy focused on building a scaled, differentiated provider of protection solutions. The addition of AT-RISK represents an important step in this evolution, and we are excited to continue supporting Mark and the Protos team in this next phase of the Company’s growth story.” The partnership with AT-RISK represents Protos’ 12th acquisition since partnering with Southfield. About Southfield Capital Southfield Capital is a premier private equity firm with a foundational commitment to driving value at high-growth, lower middle market companies in the business services sector. The firm leverages its deep team of highly-experienced investment, technology and value-creation professionals, combined with fully-integrated AI-driven capabilities to partner with founders and manager-owned teams. For more information, please visit www.southfieldcapital.com About Protos Security Protos Security is a leading tech-enabled managed security services provider offering physical guarding, off-duty officers, specialized and remote monitoring services for a diverse customer base across North America. Through a unique managed services model, clients gain access to a vast and agile provider network for security service delivery. Protos’ unwavering commitment to innovation paired with real-time security program data insights ensures that Protos is a relentless advocate for clients and their people. For more information, please visit www.protossecurity.com

Operational Excellence 

Build structure that scales. 

Leadership Depth

Build teams that can go the distance.

Strategic M&A

Build through thoughtful acquisition.

Technology & AI Enablement 

Build with better information.

A better way to build strong companies. 

Experience that strengthens everything you've built

Southfield’s partners have worked together for 16+ years on average
rare consistency in private equity. 


And that consistency creates: 

  • Shared judgment 
  • Deep trust 
  • Proven playbooks 
  • Pattern recognition you can count on 
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We bring the right expertise into the room at the right moment: 

  • Commercial leaders 
  • Operational specialists 
  • Technology & AI partners 
  • Talent strategists 
  • M&A experts 


We’re hands-on enough to help. Experienced enough to guide. Humble enough to collaborate.