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 * Nelson Kimberly K.   2. Issuer Name and Ticker or Trading Symbol SPS COMMERCE INC [SPSC] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) EVP & CFO (Last) (First) (Middle) 333 SOUTH SEVENTH STREET, SUITE 1000 3. Date of Earliest Transaction (Month/Day/Year) 04/30/2019 (Street) MINNEAPOLIS, MN 55402 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 Common Stock 04/30/2019   M(1)   20,000 A $ 16.64 70,987 D   Common Stock 04/30/2019   S(2)   13,961 D $ 103.7137 (3) 57,026 D   Common Stock 04/30/2019   S(2)   3,133 D $ 104.5193 (4) 53,893 D   Common Stock 04/30/2019   S(2)   1,705 D $ 105.8498 (5) 52,188 D   Common Stock 04/30/2019   S(2)   800 D $ 106.7937 (6) 51,388 D   Common Stock 04/30/2019   S(2)   401 D $ 107.7246 (7) 50,987 D   Common Stock               98.79 (8) I By 401(k) Plan

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

Employee Stock Option (right to buy)

$ 16.64

04/30/2019

M(1)

20,000

(9)

02/10/2021

Common Stock

20,000

$ 0

14,322

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Nelson Kimberly K. 333 SOUTH SEVENTH STREET SUITE 1000 MINNEAPOLIS, MN 55402			EVP & CFO

Signatures

/s/ Jonathan R. Zimmerman, attorney-in-fact for Kimberly K. Nelson		05/02/2019
**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)	Stock Option exercise effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 15, 2019.
(2)	Sales effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 15, 2019.
(3)	Reflects the weighted average price of 13,961 shares of Common Stock of the Issuer sold by the reporting person in multiple transactions on April 30, 2019 with sales prices ranging from $103.25 to $104.24 per share. The reporting person undertakes to provide upon request by the U.S. Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased or sold at each separate price.
(4)	Reflects the weighted average price of 3,133 shares of Common Stock of the Issuer sold by the reporting person in multiple transactions on April 30, 2019 with sales prices ranging from $104.26 to $105.24 per share. The reporting person undertakes to provide upon request by the U.S. Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased or sold at each separate price.
(5)	Reflects the weighted average price of 1,705 shares of Common Stock of the Issuer sold by the reporting person in multiple transactions on April 30, 2019 with sales prices ranging from $105.26 to $106.14 per share. The reporting person undertakes to provide upon request by the U.S. Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased or sold at each separate price.
(6)	Reflects the weighted average price of 800 shares of Common Stock of the Issuer sold by the reporting person in multiple transactions on April 30, 2019 with sales prices ranging from $106.27 to $106.98 per share. The reporting person undertakes to provide upon request by the U.S. Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased or sold at each separate price.
(7)	Reflects the weighted average price of 401 shares of Common Stock of the Issuer sold by the reporting person in multiple transactions on April 30, 2019 with sales prices ranging from $107.58 to $108.00 per share. The reporting person undertakes to provide upon request by the U.S. Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased or sold at each separate price.
(8)	These shares are held in the reporting person's account in the SPS Commerce, Inc. 401(k) plan as of April 29, 2019.
(9)	Fully vested.

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