Explanation of Responses:
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1)
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These securities are directly owned by G2 Investment Partners QP LP (a "Reporting Person").
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2)
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These securities are held in the accounts of private investment funds managed by G2 Investment Partners Management LLC ("G2 Investment Partners Management") and may be deemed to be beneficially owned by (i) G2 Investment Partners Management, (ii) G2 Investment Partners GP LLC, and (iii) Josh Goldberg, the managing member of G2 Investment Partners Management and G2 Investment Partners GP LLC (each a "Reporting Person" and together with G2 Investment Partners QP LP, the "Reporting Persons"). The Reporting Persons disclaim beneficial ownership of the reported securities except to the extent of their pecuniary interest therein, and affirmatively disclaim being a "group" for purposes of Section 16 of the Securities Exchange Act of 1934, as amended.
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3)
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The reported price is the weighted average sale price for sales on December 2, 2016 by the Reporting Person. The actual prices of such sales ranged from $5.95 to $6.15. The Reporting Person undertakes to provide, upon request by the Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.
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4)
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The reported price is the weighted average sale price for sales on December 2, 2016 by the Reporting Persons. The actual prices of such sales ranged from $5.95 to $6.15. The Reporting Persons undertake to provide, upon request by the Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.
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5)
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The reported price is the weighted average purchase price for purchases on December 2, 2016 by the Reporting Person. The actual prices of such purchases ranged from $5.90 to $6.15 The Reporting Person undertakes to provide, upon request by the Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased at each separate price.
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6)
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The reported price is the weighted average purchase price for purchases on December 2, 2016 by the Reporting Persons. The actual prices of such purchases ranged from $5.90 to $6.15 The Reporting Persons undertake to provide, upon request by the Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased at each separate price.
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7)
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The reported price is the weighted average sale price for sales on December 2, 2016 by the Reporting Person. The actual prices of such sales ranged from $6.00 to $6.10. The Reporting Person undertakes to provide, upon request by the Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.
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8)
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The reported price is the weighted average sale price for sales on December 2, 2016 by the Reporting Persons. The actual prices of such sales ranged from $6.00 to $6.10. The Reporting Persons undertake to provide, upon request by the Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.
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9)
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The reported price is the weighted average purchase price for purchases on December 2, 2016 by the Reporting Person. The actual prices of such purchases ranged from $6.03 to $6.10 The Reporting Person undertakes to provide, upon request by the Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased at each separate price.
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10)
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The reported price is the weighted average purchase price for purchases on December 2, 2016 by the Reporting Persons. The actual prices of such purchases ranged from $6.03 to $6.10 The Reporting Persons undertake to provide, upon request by the Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased at each separate price.
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11)
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The reported price is the weighted average sale price for sales on December 2, 2016 by the Reporting Person. The actual prices of such sales ranged from $6.15 to $6.18. The Reporting Person undertakes to provide, upon request by the Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.
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12)
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The reported price is the weighted average sale price for sales on December 2, 2016 by the Reporting Persons. The actual prices of such sales ranged from $6.15 to $6.18. The Reporting Persons undertake to provide, upon request by the Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.
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13)
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The reported price is the weighted average sale price for sales on December 5, 2016 by the Reporting Person. The actual prices of such sales ranged from $6.10 to $6.25. The Reporting Person undertakes to provide, upon request by the Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.
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14)
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The reported price is the weighted average sale price for sales on December 5, 2016 by the Reporting Persons. The actual prices of such sales ranged from $6.10 to $6.25. The Reporting Persons undertake to provide, upon request by the Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.
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