A public memorial for J.R. Beyster, founder and longtime CEO of defense contractor SAIC, is scheduled for 2 p.m. Saturday, Jan. 31 at the Hilton San Diego Resort & Spa, 1775 East Mission Bay Drive.

Beyster died on Dec. 22 at age 90.

The Beyster family has asked people who plan to attend the Jan. 31 gathering to register by Jan. 27 at http://bit.ly/1IZNiXx, to help them make arrangements for the day.

The event — which family members say will be a celebration of Beyster’s remarkable life — will be in the hotel ballroom. A champagne toast on the south poolside deck will follow.

Beyster’s company, known formally as Science Applications International Corp., worked discreetly on a number of national security projects. By contrast, Beyster was an outspoken advocate for employee ownership of companies. SAIC was employee-owned since its founding in 1969, and only went onto the public stock exchange in 2006. Since then the company moved to suburban Washington, D.C. and split into two firms: Leidos Holdings Inc. (NYSE: LDOS) and SAIC (NYSE: SAIC).