The former general counsel of Broadcom Corp., David Dull, avoided criminal charges in a stock options backdating case this week following claims of prosecutorial misconduct.

Dull is expected to reach a nonprosecution agreement with the government, according to court documents. He has not been criminally charged in the case, but he is considered to be a co-conspirator in the government’s indictment, which leveled securities fraud charges against Henry Nicholas, the former chief executive officer, and William Ruehle, the former chief financial officer, of Broadcom. The U.S. Securities and Exchange Commission also sued Dull in a related civil action in which he has denied any wrongdoing.