X0306 4 2019-06-03 0001418091 TWITTER, INC. TWTR 0001644368 Kaiden Robert C/O TWITTER, INC. 1355 MARKET STREET, SUITE 900 SAN FRANCISCO CA 94103 1 Chief Accounting Officer Common Stock 2019-06-03 4 S 0 3796 35.70460 D 239439 I See footnote Represents the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of RSUs. This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary trade by the Reporting Person. The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $35.69 to $35.745 per share. The Reporting Person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Of the reported shares 229,875 shares are represented by RSUs. 8,800 shares are held of record by the Kaiden Family Trust Agreement, for which the Reporting Person serves as trustee. /s/ Sean Edgett, Attorney-in-Fact 2019-06-03