The parent company of the Greater Wilmington Business Journal and Wilma magazine has a new part owner, officials announced Thursday.

Robert Preville now owns half of SAJ Media LLC along with Rob Kaiser, according to a statement from Kaiser, who purchased the publications in 2007.

Preville said the deal was finalized Wednesday for an undisclosed amount.

Kaiser said the partnership would help strengthen the publications’ reach into new formats.

“What publishers need these days are geeks, and the Business Journal and Wilma now have a super-geek,” Kaiser said in the statement. “RB [Preville] has a rare combination of technology and business talents. He not only pounds out the code that powers his companies, he’s also very sharp at business strategy, building sales operations, marketing and customer service.”

Preville, former owner of Global Test Supply, has worked on several Internet-based ventures.

“While I did not set a career course in publishing, the recent convergence between publishing and technology makes this partnership a natural fit,” he said in an email Thursday. “I believe the challenges this industry has faced is in part due to evolutional oversight, and therein lies the opportunity.

“GWBJ and Wilma has built a great reputation for quality content produced in conformance to the highest journalistic standards. This partnership establishes the foundation for a technological strategy that better serves the delivery expectations of that content, as well as the needs of our advertising clients.”

Preville said he would serve as the company’s president. Kaiser will continue in his role as publisher of the Business Journal and Wilma.