Gary Primm net worth: Gary Primm is an American casino developer and executive who has a net worth of $1 billion dollars. Born in San Marino, California, Gary Primm grew up around casinos, as his father was a successful casino developer. He went on to develop his own casino, the Primadonna Casino in Primm, Nevada, in the mid-70s. Primm, Nevada was named after his father, who owned most of the land in the small town. After his father passed away in the early 80s, Gary Primm became CEO of his father's development company. He grew the company into Primm Valley Resorts and Primadonna Resorts, Inc., which now controls three popular resort/casinos on the California state line. He also co-developed the New York, New York resort and casino in Las Vegas, Nevada. He lived in the Newport Beach area for many years, and then relocated to Las Vegas, Nevada. He recently returned to living in Newport Beach.