*
Represents beneficial ownership of less than 1% of our outstanding shares of common stock.
(1)
Based solely on the information set forth in a Schedule 13G filed with the SEC on February 14, 2019 by Brown Capital Management, LLC. Represents 5,427,450 shares beneficially owned by Brown Capital Management, LLC, over which it has sole voting power with respect to 3,203,678 shares and sole dispositive power with respect to 5,427,450 shares. Included in the shares beneficially owned by Brown Capital Management, LLC are 2,135,069 shares beneficially owned by The Brown Capital Management Small Company Fund, a registered investment company, which is managed by Brown Capital Management, LLC. The Brown Capital Management Small Company Fund has sole voting and dispositive power over the shares it beneficially owns. The address of Brown Capital Management, LLC is 1201 N. Calvert Street, Baltimore, MD 21202.
(2)
Based solely on the information set forth in a Schedule 13G filed with the SEC on February 6, 2019 by Blackrock, Inc. Represents 2,200,316 shares beneficially owned by Blackrock, Inc. and its affiliated entities, over which it has sole voting power with respect to 2,121,565 shares and sole dispositive power with respect to 2,200,316 shares. The address of Blackrock, Inc. is 55 East 52nd Street, New York, NY 10055.
(3)
Based solely on the information set forth in a Schedule 13G filed with the SEC on January 9, 2019 by Conestoga Capital Advisors, LLC. Represents 2,061,329 shares beneficially owned by Conestoga Capital Advisors, LLC and its affiliated entities, over which it has sole voting power with respect to 1,842,229 shares and sole dispositive power with respect to 2,061,329 shares. The address of Conestoga Capital Advisors, LLC is 550 E. Swedesford Rd. Ste 120, Wayne, PA 19087.
(4)
Based solely on the information set forth in a Schedule 13G filed with the SEC on February 13, 2019 by AllianceBernstein L.P. Represents 1,564,635 shares beneficially owned by AllianceBernstein L.P. and its affiliated entities, over which it has sole voting power with respect to 1,501,045 shares, sole dispositive power with respect to 1,522,051 shares and shared dispositive power with respect to 42,584 shares. The address of AllianceBernstein L.P. is 1345 Avenue of the Americas, New York NY 10105.
(5)
Represents 7,500 options that are exercisable within 60 days of March 31, 2019.
(6)
Represents 81,498 shares held by the Grotting Family Trust dtd 04/02/2004.
(7)
As noted above, upon the conclusion of our annual meeting, each of Mr. Hillebrand and Mr. Grotting will no longer be members of our Board of Directors.
(8)
Represents 44,529 shares held by Mr. Johnson and 78,552 options that are exercisable within 60 days of March 31, 2019.
(9)
Represents 191,530 shares held by the Lang Van Schaack Family Revocable Trust and 285,927 options held by Mr. Lang that are exercisable within 60 days of March 31, 2019.
(10)
Represents 20,950 shares held by Mr. McMullen and 13,714 options that are exercisable within 60 days of March 31, 2019.
(11)
Represents 32,127 shares held by Ms. O’Keefe and 13,333 options held by Ms. O’Keefe that are exercisable within 60 days of March 31, 2018.
(12)
Represents 57,537 shares held by Mr. Spencer and 25,000 options held by Mr. Spencer that are exercisable within 60 days of March 31, 2019.
(13)
Includes 424,026 options that are exercisable within 60 days of March 31, 2019.