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WASHINGTON (AP) -- The co-chairman of Dril-Quip Inc., an oil and gas equipment and services company, sold 100,000 shares of common stock, according to a Securities and Exchange Commission filing. In a Form 4 filed Monday with the SEC, J. Mike Walker reported he sold the shares Thursday for $56.50 to $56.88 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. Dril-Quip is based in Houston.
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