X0303 4 2010-05-18 0001022705 TESCO CORP TESO 0001482975 O'BLENES JONATHAN BRIAN 3993 W. SAM HOUSTON PARKWAY N. SUITE 100 HOUSTON TX 77043 1 VP, Mfg & Surf Prod Eng Common Stock 2010-05-18 4 M 0 300 0 A 2085.3667 D Common Stock 1094.6891 I Solium - RRSP Account Restricted Stock Unit 2010-05-18 4 M 0 300 0 D 2010-05-18 2010-05-18 Common Stock 300 0 D On May 18, 2007, the Reporting Person received a grant of Restricted Stock Units ("RSUs") under the Amended and Restated 2005 Tesco Corporation Incentive Plan (the "Plan"). The RSUs vested on the anniversary date of the grant. Under the terms of the Plan, the Company redeemed the vested RSUs for an equal number of shares of the Company's common stock. The defined terms in this footnote are used in other footnotes throughout this Form 4. The Reporting Person received shares of the Company's common stock upon the vesting and redemption of an equal number of RSUs. The Reporting Person received the shares at no cost. The market value of the shares of common stock was calculated in accordance with the Plan at US$ 12.20. The Company redeemed RSUs from a grant received by the Reporting Person on May 18, 2007. Under the terms of the Plan, there was no conversion price. James A. Lank, Attorney-in-Fact 2010-05-20