Stephen Jay Carlton, a 45-year-old Novato resident, is facing multiple felony charges, including grand theft, embezzlement, forgery, identity theft and tax eviction.
He faces up to 18 years in prison if he is convicted.
Mr. Carlton came under suspicion in September 2013 after one of the association's board members was alerted that the 65-year-old nonprofit's funds were unusually low, according to a press release issued by the Santa Clara County District Attorney's Office.
Mr. Carlton resigned shortly after board members brought the issue to the Los Altos Police Department. One of the symphony's endowments dropped from $227,000 to $375; another was depleted by nearly $200,000 — going from $195,000 to $395.
In a subsequent investigation, it was shown that Mr. Carlton had used association checks to pay himself, prosecutors said. He is accused of forging the signatures of two board members on a number of the checks, taking out an unauthorized $25,000 loan in the association's name, and using the money to pay down personal debts.