FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person * Whiteley Sivan   2. Issuer Name and Ticker or Trading Symbol Square, Inc. [SQ] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Gen. Counsel & Corp. Secretary (Last) (First) (Middle) 1455 MARKET STREET, SUITE 600 3. Date of Earliest Transaction (Month/Day/Year) 10/01/2018 (Street) SAN FRANCISCO, CA 94103 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Class A Common Stock 10/01/2018   F   3,503 (1) D $ 97.28 125,407 D   Class A Common Stock 10/02/2018   C(2)   1,875 A $ 0 127,282 D   Class A Common Stock 10/02/2018   S(3)   687 D $ 97.72 (4) 126,595 D   Class A Common Stock 10/02/2018   S(3)   4,337 D $ 99.65 (5) 122,258 D   Class A Common Stock 10/02/2018   S(3)   200 D $ 99.98 (6) 122,058 D

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Stock Option (right to buy)

$ 13.94

10/02/2018

M

1,875

(7)

06/16/2025

Class B Common Stock (8)

1,875

$ 0

15,000

D

Class B Common Stock (8)

(8)

10/02/2018

M

1,875

(8)

(8)

Class A Common Stock

1,875

$ 0

1,875

D

Class B Common Stock (8)

(8)

10/02/2018

C(2)

1,875

(8)

(8)

Class A Common Stock

1,875

$ 0

0

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Whiteley Sivan 1455 MARKET STREET SUITE 600 SAN FRANCISCO, CA 94103			Gen. Counsel & Corp. Secretary

Signatures

/s/ Jason Gao, Attorney-in-Fact		10/03/2018
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	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 and restricted stock units and does not represent a sale by the Reporting Person.
(2)	Represents the conversion of Class B Common Stock into Class A Common Stock held of record by the Reporting Person.
(3)	The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.
(4)	The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $97.47 to $98.02 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.
(5)	The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $98.81 to $99.78 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.
(6)	The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $99.90 to $100.06 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.
(7)	25% of the shares subject to the option vested on June 1, 2016, and 1/48 of the shares vest monthly thereafter.
(8)	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.

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