David B. Rosenwasser, EVP & COO at GULFMARK OFFSHORE INC (GLF), sold 17,000 shares at $44.89 ($763K) on 2013-05-10, disclosed to the SEC on 2013-05-13.
Open-market sale of $763k GLF by EVP & COO. 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.