X0306 4 2016-08-05 0 0001512673 Square, Inc. SQ 0001658462 Wagner Dana 1455 MARKET STREET SUITE 600 SAN FRANCISCO CA 94103 0 1 0 0 Gen. Counsel & Corp. Secretary Class A Common Stock 2016-08-05 4 C 0 50000 0.00 A 321315 D Class A Common Stock 2016-08-05 4 S 0 50000 11.29 D 271315 D Class B Common Stock Class A Common Stock 309120 309120 I See footnote Stock Option (right to buy) 1.311 2016-08-05 4 M 0 50000 0.00 D 2021-08-10 Class B Common Stock 50000 710000 D Class B Common Stock 2016-08-05 4 M 0 50000 0.00 A Class A Common Stock 50000 50000 D Class B Common Stock 2016-08-05 4 C 0 50000 0.00 D Class A Common Stock 50000 0 D Represents the conversion of Class B Common Stock into Class A Common Stock held of record by the Reporting Person. 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 $11.20 to $11.40 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. Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and has no expiration date. The shares are held of record by the Dana R. Wagner Living Trust, for which the Reporting Person serves as trustee. The shares subject to the option are fully vested and exercisable. /s/ Jason Gao, Attorney-in-Fact 2016-08-09