Transaction Details

Footnotes

The Reporting Person is a director and stockholder of SC US (TTGP), Ltd. SC US (TTGP), Ltd. is (i) the general partner of SC US/E Expansion Fund I Management, L.P., ("EXPI Management") and (ii) the general partner of Sequoia Capital Fund Management, L.P., which is the general partner of Sequoia Capital Fund, LP ("SCF") and the managing member of Sequoia Capital Fund Parallel, LLC ("SCFP"). As a result, the Reporting Person may be deemed to share voting and dispositive power with respect to the shares held by EXPI Management, SCF and SCFP. The Reporting Person disclaims beneficial ownership of the shares held by EXPI Management, SCF and SCFP except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes. | The price reported in column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $187.69 to $188.63. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff at the Securities and Exchange Commission, upon request, the full information regarding the number of shares sold at each separate price within the ranges set forth above. | The price reported in column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $188.69 to $189.67. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff at the Securities and Exchange Commission, upon request, the full information regarding the number of shares sold at each separate price within the ranges set forth above. | The price reported in column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $189.70 to $190.00. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff at the Securities and Exchange Commission, upon request, the full information regarding the number of shares sold at each separate price within the ranges set forth above. | The price reported in column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $192.62 to $193.61. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff at the Securities and Exchange Commission, upon request, the full information regarding the number of shares sold at each separate price within the ranges set forth above. | The price reported in column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $193.62 to $194.61. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff at the Securities and Exchange Commission, upon request, the full information regarding the number of shares sold at each separate price within the ranges set forth above. | The price reported in column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $194.65 to $195.64. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff at the Securities and Exchange Commission, upon request, the full information regarding the number of shares sold at each separate price within the ranges set forth above. | The price reported in column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $195.65 to $196.62. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff at the Securities and Exchange Commission, upon request, the full information regarding the number of shares sold at each separate price within the ranges set forth above. | The price reported in column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $197.57 to $198.56. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff at the Securities and Exchange Commission, upon request, the full information regarding the number of shares sold at each separate price within the ranges set forth above. | The price reported in column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $198.57 to $199.56. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff at the Securities and Exchange Commission, upon request, the full information regarding the number of shares sold at each separate price within the ranges set forth above. | The price reported in column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $199.57 to $200.00. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff at the Securities and Exchange Commission, upon request, the full information regarding the number of shares sold at each separate price within the ranges set forth above. | Includes 5,919 shares transferred to an estate planning vehicle in a transaction exempt from Section 16 pursuant to Rule 16a-13.