X0303 4 2010-06-06 0001022705 TESCO CORP TESO 0001364531 Quintana Julio M 3993 W. SAM HOUSTON PARKWAY N. SUITE 100 HOUSTON TX 77043 1 1 President and CEO Common Stock 2010-06-06 2010-06-07 4 M 0 6666 0 A 81019 D Common Stock 2010-06-08 4 S 0 2642 10.0615 D 78377 D Restricted Stock Unit 2010-06-06 2010-06-07 4 M 0 6666 0 D 2011-06-06 Common Stock 6666 6668 D The actual vest date was Sunday, June 6, 2010, a day in which the US Markets were closed. Under the terms of the Plan (defined below), the deemed execution date was Monday, June 7, 2010. On June 6, 2008, 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 a 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$ 10.86. The Reporting Person elected to sell enough shares to cover the payroll taxes due on the receipt of shares at the vesting and settlement of RSUs. The shares sold in nine (9) blocks for prices ranging from $10.023 to $10.1655 per share. The weighted average price of the shares sold was $10.0615 per share. Specific details of the block sales can be provided upon request. The Company redeemed RSUs from a grant received by the Reporting Person on June 6, 2008. Under the terms of the Plan, there was no conversion price. The RSUs vest equally over three years on the anniversary of the grant date. James A. Lank, Attorney-in-Fact 2010-06-08