Patterson UTI Energy Inc.

Extended the maturity date of $357.9 million in revolving credit commitments of certain lenders, to March 27, 2019, from the previous date of Sept. 27, 2017, through amending its $500 million senior unsecured revolving credit agreement. The credit agreement’s interest rates applicable to borrowings and the debt-to-capitalization ratio covenant were also amended. Entire outstanding $230 million principal amount of bank term loans have been repaid.