Unit Corporation (NYSE: UNT) announced today that it will participate at
EnerCom’s London Oil & Gas Conference, which will be held June 17th in
London, England. Unit’s presentation will be broadcast live over the
Internet on Thursday, June 17, 2010 at 2:20 p.m. British Summer Time
(9:20 a.m. Eastern Daylight Time). Listeners may access the webcast and
the conference presentation via the Company’s website at www.unitcorp.com.

Unit Corporation is a Tulsa-based, publicly held energy company engaged
through its subsidiaries in oil and gas exploration, production,
contract drilling and natural gas gathering and processing. Unit’s
Common Stock is listed on the New York Stock Exchange under the symbol
UNT. For more information about Unit Corporation, visit its website at http://www.unitcorp.com.

Unit Corporation
David T. Merrill, 918-493-7700
Financial Officer & Treasurer