EXHIBIT 31.2

CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT

I, Joseph Del Preto, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q/A of SPS Commerce, Inc.; and

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report.

/s/ JOSEPH DEL PRETO
Joseph Del Preto
Executive Vice President and Chief Financial Officer (principal financial and accounting officer) July 21, 2026