Fifteen years after TenEleven Group was founded by former CTG Inc. executives, the Amherst-based technology company has been sold. Primary owners Alex Alexander and Gerry Speranza reached a deal to sell their company to Therapy Brands, which offers a web-based platform for mental and behavioral health provides. Therapy Brands is enacting a strategy to roll-up like-minded technology companies into a single platform. It is owned by Lightyear Capital, a Manhattan-based private equity firm. TenEleven...