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 * CID Mezzanine Partners, L.P.   2. Issuer Name and Ticker or Trading Symbol SPS COMMERCE INC [SPSC] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director __X__ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 201 WEST 103RD STREET, SUITE 200 3. Date of Earliest Transaction (Month/Day/Year) 04/27/2010 (Street) INDIANAPOLIS, IN 46290 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) ___ Form filed by One Reporting Person _X_ 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 04/27/2010   C   1,575,829 A (1) 1,575,829 I By CID Mezzanine Capital, L.P. (2) Common Stock 04/27/2010   S   427,189 D $ 11.16 1,148,640 I By CID Mezzanine Capital, L.P. (2)

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

Series A Convertible Preferred Stock

(1)

04/27/2010

C

82,102

(3)

(3)

Common Stock

82,102

$ 0

0

I

By CID Mezzanine Capital, L.P. (2)

Series B Convertible Preferred Stock

(1)

04/27/2010

C

1,252,962

(3)

(3)

Common Stock

1,252,962

$ 0

0

I

By CID Mezzanine Capital, L.P. (2)

Series C Convertible Preferred Stock

(1)

04/27/2010

C

240,765

(3)

(3)

Common Stock

240,765

$ 0

0

I

By CID Mezzanine Capital, L.P. (2)

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
CID Mezzanine Partners, L.P. 201 WEST 103RD STREET SUITE 200 INDIANAPOLIS, IN 46290		X
CID MEZZANINE CAPITAL L P 201 WEST 103RD STREET SUITE 200 INDIANAPOLIS, IN 46290		X

Signatures

/s/ Ryan R. Miske, on behalf of CID Mezzanine Partners, L.P.		04/29/2010
**Signature of Reporting Person		Date
/s/ Ryan R. Miske, on behalf of CID Mezzanine Partners, L.P., as General Partner of CID Mezzanine Capital, L.P.		04/29/2010
**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)	The securities converted into the Issuer's Common Stock at a rate of one-for-one.
(2)	Represents securities held directly by CID Mezzanine Capital, L.P, which is managed by CID Mezzanine Partners, L.P. The reporting person may be deemed to be an indirect beneficial owner of the reported securities. The reporting person disclaims any beneficial ownership of the reported securities, except to the extent of any pecuniary interest therein. This report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for purposes of Section 16 or for any other purpose.
(3)	The securities do not have an expiration date. Each share of Series A, Series B and Series C Convertible Preferred Stock automatically converted into shares of Common Stock in connection with the closing of the Issuer's initial public offering on April 27, 2010. Prior to its conversion into the Issuer's Common Stock, the Series A, Series B and Series C Convertible Preferred Stock was convertible at any time at the option of the holder.

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