X0306 4 2017-07-10 0001418091 TWITTER, INC. TWTR 0001590851 Gadde Vijaya C/O TWITTER, INC. 1355 MARKET STREET, SUITE 900 SAN FRANCISCO CA 94103 1 General Counsel Common Stock 2017-07-10 4 S 0 7500 18.0315 D 944781 D Common Stock 2017-07-11 4 S 0 7500 18.5272 D 937281 D The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted 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 $17.80 to $18.13 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 583,063 shares are represented by RSUs. The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $18.11 to $18.65 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. /s/ Sean Edgett, Attorney-in-Fact 2017-07-12