Key Takeaways
- • Flexstone Partners to acquire Glouston Capital Partners, creating a $15 billion combined private equity platform managing assets across primary, co-investment, and secondary strategies serving institutional investors across North America, Europe, and Asia.
- • Glouston brings $3.4 billion in assets under management and over 30 years of dedicated secondaries expertise in the North American middle market, complementing Flexstone's existing $12 billion AUM global platform.
- • The combined firm eliminates geographic and strategic overlap, with Glouston's North American secondaries capabilities extending Flexstone's ability to serve institutional investors across multiple private equity strategies and geographies.
- • Flexstone is an affiliate of Natixis Investment Managers, which manages $1.4 trillion in assets, providing institutional-grade backing for the enlarged platform.
- • Financial terms of the transaction were not disclosed, though law firm Proskauer advised Glouston Capital Partners on the agreement announced June 17, 2026.
Summary
Flexstone Partners has agreed to acquire Boston-based Glouston Capital Partners in a transaction designed to create a scaled, global private equity platform managing more than $15 billion in assets. The combined entity will operate across primary fund investments, co-investment strategies, and secondary transactions, positioning the enlarged firm to serve institutional investors across North America, Europe, and Asia.
Glouston Capital Partners, which manages over $3.4 billion in committed capital and boasts more than 30 years of experience in private equity secondaries, brings specialized expertise in the North American middle market that complements Flexstone's existing global platform. Flexstone currently manages $12 billion in assets and operates as an affiliate of Natixis Investment Managers, which oversees $1.4 trillion in assets globally. The transaction is structured to minimize strategic overlap, with Glouston's geographically distinct North American secondaries capabilities extending Flexstone's breadth across the full private equity investment spectrum.
According to Flexstone's Managing Partner and CEO Eric Deram, the acquisition marks a significant expansion of the firm's service offerings. "Glouston's team brings a complementary investment philosophy to the middle-market landscape and a long history of disciplined execution," Deram stated. "Their secondaries expertise aligns with our culture and expands the breadth of strategies that Flexstone can offer investors across our private equity platform." The transaction leverages Glouston's deep relationships with general partners and its rigorous approach to middle-market investing, which the parties characterized as materially strengthening Flexstone's secondaries platform.
Financial terms of the acquisition were not disclosed. Law firm Proskauer advised Glouston Capital Partners on the transaction agreement, which was announced on June 17, 2026.
Glouston Capital Partners, which manages over $3.4 billion in committed capital and boasts more than 30 years of experience in private equity secondaries, brings specialized expertise in the North American middle market that complements Flexstone's existing global platform. Flexstone currently manages $12 billion in assets and operates as an affiliate of Natixis Investment Managers, which oversees $1.4 trillion in assets globally. The transaction is structured to minimize strategic overlap, with Glouston's geographically distinct North American secondaries capabilities extending Flexstone's breadth across the full private equity investment spectrum.
According to Flexstone's Managing Partner and CEO Eric Deram, the acquisition marks a significant expansion of the firm's service offerings. "Glouston's team brings a complementary investment philosophy to the middle-market landscape and a long history of disciplined execution," Deram stated. "Their secondaries expertise aligns with our culture and expands the breadth of strategies that Flexstone can offer investors across our private equity platform." The transaction leverages Glouston's deep relationships with general partners and its rigorous approach to middle-market investing, which the parties characterized as materially strengthening Flexstone's secondaries platform.
Financial terms of the acquisition were not disclosed. Law firm Proskauer advised Glouston Capital Partners on the transaction agreement, which was announced on June 17, 2026.
Go deeper than the headline
Research every firm in this story, track the ones that matter and get the daily briefing — free for 7 days.