SPS Commerce (SPSC) investor relations material

Voting matters and shareholder proposals

• Nine nominees are standing for election to the board at the 2026 Annual Meeting, including Michael McConnell.

• The board recommends a vote FOR all director nominees.

• Proxy voting instructions already submitted remain valid unless changed by the shareholder.

Board of directors and corporate governance

• Michael McConnell serves on five other boards but intends to reduce his public company board memberships to four by August 2026.

• Adacel Technologies Limited, one of McConnell's boards, is no longer listed on a major exchange, reducing his time commitment.

• Glass Lewis, a proxy advisory firm, does not count Adacel as a public company directorship for overboarding assessment.

• McConnell is not an officer or employee at any company, allowing full focus on board duties.

• McConnell's extensive experience includes serving as chair of various board committees and brings significant value to the board.

Executive compensation and say-on-pay

• No information provided in the available document sections.