Explanation of Responses:
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(1)
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The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on April 26, 2019.
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(2)
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This transaction was executed in multiple trades at prices ranging from $209.2350 to $210.12. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request by the SEC staff, the issuer, or a security holder of the issuer, full information regarding the number of shares and prices at which the transaction was effected.
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(3)
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This transaction was executed in multiple trades at prices ranging from $211.67 to $212.61. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request by the SEC staff, the issuer, or a security holder of the issuer, full information regarding the number of shares and prices at which the transaction was effected.
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(4)
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This transaction was executed in multiple trades at prices ranging from $210.56 to $211.48. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request by the SEC staff, the issuer, or a security holder of the issuer, full information regarding the number of shares and prices at which the transaction was effected.
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(5)
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This transaction was executed in multiple trades at prices ranging from $208.24 to $209.22. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request by the SEC staff, the issuer, or a security holder of the issuer, full information regarding the number of shares and prices at which the transaction was effected.
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(6)
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This transaction was executed in multiple trades at prices ranging from $213.83 to $214.7050. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request by the SEC staff, the issuer, or a security holder of the issuer, full information regarding the number of shares and prices at which the transaction was effected.
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(7)
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This transaction was executed in multiple trades at prices ranging from $212.8150 to $213.80. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request by the SEC staff, the issuer, or a security holder of the issuer, full information regarding the number of shares and prices at which the transaction was effected.
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(8)
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This transaction was executed in multiple trades at prices ranging from $214.98 to $215.97. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request by the SEC staff, the issuer, or a security holder of the issuer, full information regarding the number of shares and prices at which the transaction was effected.
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(9)
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This transaction was executed in multiple trades at prices ranging from $217.0150 to $217.93. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request by the SEC staff, the issuer, or a security holder of the issuer, full information regarding the number of shares and prices at which the transaction was effected.
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(10)
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This transaction was executed in multiple trades at prices ranging from $216.01 to $216.96. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request by the SEC staff, the issuer, or a security holder of the issuer, full information regarding the number of shares and prices at which the transaction was effected.
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(11)
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Shares represented on the most recent statement of Issuer's 401(k) Plan Administrator.
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