Mergers and acquisitions involving Minnesota companies

9/17, Co-Mergent LLC-TetraVX Inc: TetraVX, a unified communications and collaboration provider (UCC), has acquired Co-Mergent, a provider of Microsoft intelligent communications management and management and monitoring services.

9/17, Evolve Additive-Investor group: Evolve Additive Solutions, a developer of Selective Thermoplastic Electrophotographic Process (STEP) technology to automate manufacturing and factory-floor integration, has received a $19 million equity investment led by the Lego Brand Group, Stanley Black and Decker Investments and a third undisclosed investor.

9/18, Onesource Retirement -Wealth Enhancement: Wealth Enhancement Group will acquire OneSource Advisors Group LLCRetirement Advisors, an independent financial advisory practice in the greater Philadelphia metro area.

9/20, Stelfast Inc.-Lindstrom Metric LLC: Lindstrom Metric, a distributor of specialty fasteners, has acquired Stelfast, a manufacturer of industrial gears and screw machine products.