Initial Statement of Beneficial Ownership

This filing is an Initial Statement of Beneficial Ownership (Form 3) for CSP INC /MA/ (CSPI). The reporting owner is CSP INC /MA/ itself, with Eric Sachs signing on June 9, 2026. The filing indicates that following the transaction, 8,000 shares of Common Stock are directly owned. The reporting owner is an officer, holding the title of VP Finance & CAO.