Four former executives of Berbee Information Networks have bought back part of the Fitchburg company from CDW and formed their own business, Singlewire Software, also based in Fitchburg.

Terms of the deal were not disclosed, but it took effect Wednesday. The new owners were described as a “small group of private investors.”

Singlewire features Berbee Software, including InformaCast technology. The Internet protocol technology is used to alert people within a company or organization of emergencies, security breaches or announcements.

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