Serial tech entrepreneurs Brad Reynolds and Stephen Abbey have sold Cleveland-based to Tampa, Fla.-based KnowBe4, in a deal that unites two IT security-related companies.

This is the fourth time that Reynolds and Abbey have both been involved in a tech startup that was sold. Reynolds was CEO and Abbey was chief revenue officer.

The pair connected in 1997 when Abbey hired the 19-year-old Reynolds as chief technology officer for Internet Access Group, an internet service provider. Abbey sold IAG a couple of years later. Reynolds pocketed some of the proceeds and went off to work for a series of larger tech companies.

Eventually the duo reunited in 2001 to found Expedient, a data center business that they sold four years later for a reported $30 million. Two years later, they were at it again with Mongoose Metrics, a call tracking software company that was sold in 2011 for an undisclosed sum. was founded in 2015 to provide cyber security software for small to medium-sized companies. Its twist was using a wide range of data sources to help build unique cybersecurity awareness training for individual employees within a business at a manageable cost.

“Data-driven cybersecurity education offers a significant benefit and we feel KnowBe4 is the perfect company to take the Securable offering to the next level,” Reynolds said in a statement. “We look forward to KnowBe4 utilizing this technology to help users make better security decisions.”

Reynolds has already started another company, Bluefin Security.