Lightspeed Venture Partners IX, L.P. bought NTSK

Footnotes

Pursuant to a reclassification exempt under Rule 16b-7, each share of Common Stock was reclassified into one share of Class B Common Stock immediately prior to the completion of the Issuer's initial public offering of Class A Common Stock (the "IPO").; Each share of Series G Convertible Preferred Stock converted into Common Stock on a one-to-one basis prior to the completion of the IPO and had no expiration date.; Each share of Series H Convertible Preferred Stock converted into Common Stock on a one-to-one basis prior to the completion of the IPO and had no expiration date.; The shares are held of record by Lightspeed Opportunity Fund, L.P., or Lightspeed Opportunity Fund. Lightspeed General Partner Opportunity Fund, L.P., or Lightspeed GP Opportunity Fund, is the general partner of Lightspeed Opportunity Fund and Lightspeed Ultimate General Partner Opportunity Fund, Ltd., or Lightspeed UGP Opportunity Fund, is the general partner of Lightspeed GP Opportunity Fund. Arif Janmohamed and Ravi Mhatre, the directors of Lightspeed UGP Opportunity Fund, share voting and investment power with respect to the shares held of record by Lightspeed Opportunity Fund. Each of Lightspeed GP Opportunity Fund, Lightspeed UGP Opportunity Fund and Mr. Mhatre disclaims beneficial ownership of these shares except to the extent of its or his respective pecuniary interest therein. Mr. Janmohamed, a director of the Issuer, files separate Section 16 reports.