X0306 4 2018-07-25 0 0001512673 Square, Inc. SQ 0001570658 Friar Sarah 1455 MARKET STREET SUITE 600 SAN FRANCISCO CA 94103 0 1 0 0 Chief Financial Officer Class A Common Stock 2018-07-25 4 F 0 3546 72.53 D 361725 D Class B Common Stock Class A Common Stock 300316 300316 I See Footnote Class B Common Stock Class A Common Stock 548453 548453 I See Footnote Represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the net settlement of restricted stock units and does not represent a sale by the Reporting Person. 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 David Riley and Sarah Friar Revocable Trust dated August 11, 2006 (Revocable Trust), for which the Reporting Person serves as a trustee. The Reporting Person has sole dispositive power and voting control over the shares of the Issuer held by the Revocable Trust. The shares are held of record by The Sarah Friar 2015 GRAT, dated August 6, 2015, for which the Reporting Person serves as a trustee. /s/ Jason Gao, Attorney-in-Fact 2018-07-27