X0306 4/A 2019-02-06 2019-02-06 0 0000350894 SEI INVESTMENTS CO SEIC 0001665243 KLAUDER PAUL SEI INVESTMENTS COMPANY ONE FREEDOM VALLEY DRIVE OAKS PA 19456 0 1 0 0 EXECUTIVE VICE PRESIDENT COMMON STOCK 2019-02-06 4 I 0 2584 49.81 A 19883 D Reflects the acquisition by the reporting person under the issuer's Employee Stock Purchase Plan (the "ESPP") of an aggregate of 3,170 shares, which acquisitions have not been previously reported and were exempt from Section 16 of Securities and Exchange Act of 1934, as amended, pursuant to rules 16b-3(c) and 16a-3(f)(1)(i)(B) thereunder. All shares are held under the ESPP and the issuer's SEI Capital Accumulation Plan (401k). RUTH MONTGOMERY (ATTORNEY IN FACT) 2019-05-20