Gemspring Capital

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Mantis Innovation's office building integrating with E4E Solutions' structure, symbolizing a merger and expansion in energy and facility management services.

Mantis Innovation buys E4E Solutions to boost energy project delivery

Months after private equity firm Gemspring Capital acquired Mantis Innovation, Mantis has now acquired E4E Solutions in 2026, immediately expanding its technical depth in energy and facility managemen

Oliver Grant·June 16, 2026