The Securities and Exchange Commission and federal prosecutors in New Jersey have charged Steven Metro, a managing clerk at Simpson Thacher & Bartlett in New York, and Vladimir Eydelman, a Morgan Stanley stockbroker, with taking part in an insider-trading scheme that netted $5.6 million in illicit profits.

According to a 72-page civil complaint filed Wednesday by the SEC in Newark, Metro obtained nonpublic information on deals involving Simpson Thacher clients that he passed on to Eydelman through a mutual friend acting as the middleman.