The vice president and controller of refiner Frontier Oil Corp., exercised options for 22,000 shares of common stock, according to a Securities and Exchange Commission filing.
In a Form 4 filed with the SEC Friday, Nancy Z. Shoop reported she exercised options for the shares Thursday for $4.16 apiece and then sold all of the shares the same day for $44.27 apiece.
Insiders file Form 4s with the SEC to report transactions in their companies' shares. Open market purchases and sales must be reported within two business days of the transaction.
Frontier Oil is based in Houston.
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