William F. Weissman, CFO, Treasurer and Secretary at Rubicon Technology, Inc. (RBCN), sold 100,000 shares at $28.41 ($2.8M) on 2010-06-21, disclosed to the SEC on 2010-06-23.
Open-market sale of $2.8M RBCN by CFO, Treasurer and Secretary. Not flagged as scheduled, tax-driven, or recurring — but no specific bearish signal from our filters. Reasons for insider sales vary widely.
Something here stands out, but not much.