X0306 4 2016-01-04 0001418091 TWITTER, INC. TWTR 0001590850 Bain Adam C/O TWITTER, INC. 1355 MARKET STREET, SUITE 900 SAN FRANCISCO CA 94103 1 Chief Operating Officer Common Stock 2016-01-04 4 F 0 23865 23.14 D 465782 D Common Stock 51243 I See footnote The shares reported as disposed of were withheld by the Issuer in order to cover withholding taxes in connection with the vesting of restricted stock units, or RSUs. These shares were not issued to or sold by the Reporting Person. Of the reported shares 283,287 shares are represented by RSUs. This amount reflects the transfer from The Bain 2013 Grantor Retained Annuity Trust, dated October 22, 2013 to the Reporting Person as an annuity payment. The shares are held of record by The Bain 2013 Grantor Retained Annuity Trust, dated October 22, 2013 for which the Reporting Person serves as trustee. The Reporting Person's indirect holdings were erroneously stated at 1,000,000 rather than 100,000 on a December 3, 2014 Form 4 filing. /s/ Sean Edgett, Attorney-in-Fact 2015-01-06