Item 2. Unregistered Sales of Equity Securities
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds
On February 5, 2018, our board of directors authorized a $100.0 million two-year share repurchase program, which was announced on February 12, 2018. On October 30, 2018, October 30, 2019 and May 7, 2020, we announced that our board of directors had authorized an increase of $100.0 million, $100.0 million and $100.0 million, respectively, to the original share repurchase program authorization, resulting in an aggregate authorization of $400.0 million. Shares may be repurchased from time to time on the open market in accordance with Rule 10b-18 of the Exchange Act of 1934, including pursuant to a pre-set trading plan adopted in accordance with Rule 10b5-1 under the Exchange Act, until April 28, 2022.
During the three months ended June 30, 2020, we repurchased 242,500 shares of common stock for approximately $25.3 million. All share repurchases were made using cash resources. As of June 30, 2020, approximately $174.4 million remained available for share repurchases pursuant to our share repurchase program.
A summary of our repurchases of common stock during the three months ended June 30, 2020 is as follows:
Period Total Number of Shares Purchased Average Price Paid per Share Total Number of Shares Purchased as Part of Publicly Announced Plan or Program Approximate Dollar Value of Shares that May Yet Be Purchased under the Plan or Program
April 1 - April 30, 2020 116,000 $ 101.14 116,000 $ 187,873,920
May 1 - May 31, 2020 110,000 $ 107.63 110,000 $ 176,034,713
June 1 - June 30, 2020 16,500 $ 102.10 16,500 $ 174,350,069
Total 242,500 242,500
Item 3. Defaults upon Senior Securities
None.
Item 4. Mine Safety Disclosures
None.
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