Oceanside, Calif. — Kellermeyer Bergensons Services, LLC (KBS), a leading North American provider of technology-enabled, integrated facility management services to the industrial, commercial, logistics, retail and grocery sectors, has acquired PE Facility Solutions, LLC (“Pristine”), a provider of facility management, contract cleaning and related services. KBS is a portfolio company of San Francisco-based private investment firm GI Partners. Pristine is owned by Massachusetts-based Great Elm Capital Corp. “Pristine is an outstanding asset and its integration into the KBS platform is an important step toward advancing our expansion into targeted end …