Explanation of Responses:
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1)
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Such in-the-money options were exercised by the Reporting Person in lieu of allowing such options to expire by their terms on May 9, 2015 pursuant to a Rule 10b5-1 plan to exercise and sell the underlying common shares beginning on January 2, 2015 and expiring May 8,2015.
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2)
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Such in-the-money options were exercised by the Reporting Person in lieu of allowing such options to expire by their terms on May 31, 2015 pursuant to a Rule 10b5-1 plan to exercise and sell the underlying common shares beginning on January 2, 2015 and expiring May 29,2015.
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3)
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Such options are currently exercisable as regards 7,140 of the covered shares. The remaining shares are exercisable, as regards 2,380 of the covered shares on the fourth anniversary of the date of grant, and as regards 2,380 of the covered shares, on the fifth anniversary of the date of grant.
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4)
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Such options are currently exercisable as regards 1,200 of the covered shares. The remaining shares are exercisable, as regards 600 of the covered shares, on the third anniversary of the date of grant, as regards 600 of the covered shares on the fourth anniversary of the date of grant, and as regards 600 of the covered shares, on the fifth anniversary of the date of grant.
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5)
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Such options are exercisable as regards 1,600 of the covered shares, on the first anniversary of the date of grant, as regards 1,600 of the covered shares, on the second anniversary of the date of grant, as regards 1,600 of the covered shares, on the third anniversary of the date of grant, as regards 1,600 of the covered shares on the fourth anniversary of the date of grant, and as regards 1,600 of the covered shares, on the fifth anniversary of the date of grant.
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6)
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Such options are exercisable as regards 1,200 of the covered shares, on the first anniversary of the date of grant, as regards 1,200 of the covered shares, on the second anniversary of the date of grant, as regards 1,200 of the covered shares, on the third anniversary of the date of grant, as regards 1,200 of the covered shares on the fourth anniversary of the date of grant, and as regards 1,200 of the covered shares, on the fifth anniversary of the date of grant.
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7)
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Such options were granted to Mrs. Petty's spouse, Dr. William Petty, Executive Chairman of the Board, of the Issuer.
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8)
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Such options are currently exercisable as regards 45,000 of the covered shares. The remaining shares are exercisable, as regards 15,000 of the covered shares on the fourth anniversary of the date of grant, and as regards 15,000 of the covered shares, on the fifth anniversary of the date of grant.
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9)
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Such options are currently exercisable as regards 30,000 of the covered shares. The remaining shares are exercisable, as regards 15,000 of the covered shares, on the third anniversary of the date of grant, as regards 15,000 of the covered shares on the fourth anniversary of the date of grant, and as regards 15,000 of the covered shares, on the fifth anniversary of the date of grant.
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10)
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Such options are exercisable as regards 11,043 of the covered shares, on the first anniversary of the date of grant, as regards 11,043 of the covered shares, on the second anniversary of the date of grant, as regards 11,043 of the covered shares, on the third anniversary of the date of grant, as regards 11,044 of the covered shares on the fourth anniversary of the date of grant, and as regards 11,044 of the covered shares, on the fifth anniversary of the date of grant.
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11)
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Such options are exercisable as regards 10,000 of the covered shares, on the first anniversary of the date of grant, as regards 10,000 of the covered shares, on the second anniversary of the date of grant, as regards 10,000 of the covered shares, on the third anniversary of the date of grant, as regards 10,000 of the covered shares on the fourth anniversary of the date of grant, and as regards 10,000 of the covered shares, on the fifth anniversary of the date of grant.
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