Lightspeed Venture Partners Select, 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 D 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 E 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 F 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 Venture Partners Select, L.P., or Lightspeed Select. Lightspeed General Partner Select, L.P., or Lightspeed GP Select, is the general partner of Lightspeed Select and Lightspeed Ultimate General Partner Select, Ltd., or Lightspeed UGP Select, is the general partner of Lightspeed GP Select. Messrs. Eggers, Mhatre and Nieh, the directors of Lightspeed UGP Select, share voting and investment power with respect to the shares held of record by Lightspeed Select. Each of Lightspeed GP Select, Lightspeed UGP Select and Messrs. Eggers, Mhatre and Nieh disclaims beneficial ownership of these shares except to the extent of its or his respective pecuniary interest therein.