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Seasoned Entrepreneurs & Investors

ThirtyNine Capital is an independent sponsor specializing in buy-and-build strategies to propel profitable businesses to new heights. We focus on sectors like MSPs, Software, SaaS, Insurance, and Landscaping, leveraging our expertise to drive expansion through smart acquisitions.

We established ThirtyNine Capital to execute lower and middle market roll-up strategies while increasing efficiencies through software and artificial intelligence, and centralize non-differentiating activities or administration into new or common SaaS platforms.

Why we stand out

We are Entrepreneurs, too!

At ThirtyNine Capital, we transform businesses into market leaders through strategic buy-and-build approaches. We bring hands-on expertise in acquiring and integrating companies, ensuring rapid growth while maintaining operational excellence.

We are Investors with Industry Expertise

Our focus spans MSPs, Software, SaaS, insurance brokerages, payment gateways, and landscaping businesses, giving us a unique edge across diverse industries. We develop tailored strategies to unlock potential and align with each company’s growth dynamics.

We Deliver Exceptional Outcomes

With a proven track record of successful exits and strategic acquisitions, including the sale of AndPlus to Ensono (owned by KKR), ThirtyNine Capital has the experience and network to ensure your business thrives post-acquisition.

Our investment focus

Platform Investment

At ThirtyNine Capital, we specialize in identifying and acquiring scalable platform investments across industries. Our primary focus includes MSPs, Software, SaaS, Payment Platforms, Insurance brokerages, and landscaping companies. Leveraging deep industry expertise and strategic insights, we align each opportunity with clear growth objectives and substantial returns.

We position platforms for accelerated, long-term success by driving operational improvements, market expansion, and the foundation for future add-on acquisitions.

Add-On Acquisitions

Strategic growth is at the core of our investment strategy. We actively seek complementary add-on businesses that enhance our platform investments by expanding product lines, geographic reach, and customer bases.

Our team excels in identifying synergies and integrating acquisitions seamlessly, driving meaningful value creation. This approach strengthens competitive positioning while increasing overall market presence.

Growth Partnership

We are more than just investors—at ThirtyNine Capital, we are growth partners. By working closely with business owners and management teams, we design and execute tailored growth strategies that address each company’s unique challenges.

From strategic planning to operational optimization, we provide the expertise, resources, and support needed to scale efficiently and sustainably. Our collaborative approach unlocks new potential, driving ambitious growth targets and measurable success.

Some of our latest blog posts

About

Get to know us

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Our Company and Founder

ThirtyNine Capital is a dynamic independent sponsor specializing in investing in profitable businesses poised for substantial growth. We focus on buy-and-build strategies, acquiring platform investments and driving value through strategic add-on acquisitions. While our portfolio spans various industries, we have a particular focus on MSPs, Software, SaaS, Insurance brokerages, and landscaping companies.

Our founder, Sean Mahoney, brings a wealth of experience in scaling and transforming businesses. As the former CEO of AndPlus, Sean led the company to sustained growth and a successful acquisition by Ensono, a KKR portfolio company. At ThirtyNine Capital, we combine this proven expertise with a commitment to fostering growth, operational excellence, and innovation.

Our approach is bold yet timeless, much like our brand identity—strongly rooted in the classic elegance of black and white—reflecting our clarity, confidence, and focus in every investment we pursue.

Contact Us

Partner with Growth Experts

  • Southborough, MA and Chicago, IL

  • ThirtyNineCapital.com

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