He was a major investor in the Jack in the Box fast food chain and helped fund its expansion.
He led Convair's electronic and computer guided missile program until 1952, when he was named president of Kay Lab.
[5] Silberman served as financial chairman for California Governor Jerry Brown's 1976 presidential campaign.
[5] In 1978 he served as Brown's interim chief of staff while Gray Davis managed the Governor's reelection campaign.
According to the Federal Bureau of Investigation, Silberman had agreed to launder over $1 million he believed came from Colombian cocaine traffickers.
[13] That September he pleaded guilty to conspiracy to launder purported drug profits in exchange for the government dropping the other four charges.