Results of Operations

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 ________________________________________ FORM 8-K ________________________________________ CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 April 20, 2023 Date of report (Date of earliest event reported) ________________________________________ ________________________________________ SEI INVESTMENTS COMPANY (Exact name of registrant as specified in charter) ________________________________________ Pennsylvania   0-10200   23-1707341 (State or Other Jurisdiction of Incorporation)   (Commission File Number)   (I.R.S. Employer Identification No.) 1 Freedom Valley Drive Oaks , Pennsylvania 19456 (Address of Principal Executive Offices and Zip Code) ( 610 ) 676-1000 (Registrants’ Telephone Number, Including Area Code) ________________________________________ Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Securities registered pursuant to Section 12(b) of the Act: Title of each class Trading Symbol Name of each exchange on which registered Common Stock, par value $0.01 per share SEIC The NASDAQ Stock Market LLC Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐ Item 2.02.      Results of Operations and Financial Condition. On Thursday, April 20, 2023, SEI Investments Company (the "Company") issued a press release announcing its financial and operating results for the first quarter ended March 31, 2023. A copy of the press release is furnished as Exhibit 99.1 and incorporated in this Item 2.02 by reference. A recording of the earnings call referenced in the press release furnished as Exhibit 99.1 is available for replay on the Company’s website at seic.com/investor-relations. As provided in General Instruction B.2 to Form 8-K, the information furnished in this Item 2.02 and Exhibit 99.1 hereto shall not be deemed “filed” for purposes of Section 18 of the Securities and Exchange Act of 1934, as amended, nor shall it be deemed incorporated by reference in any filing with the Securities and Exchange Commission, except as shall be expressly provided by specific reference in such filing. Item 9.01.      Financial Statements and Exhibits. Exhibit No. Description 99.1 Press Release dated April 20, 2023 of SEI Investments Company related to the Company's financial and operating results for the first quarter ended March 31, 2023 104    Cover Page Interactive Data File (embedded within the Inline XBRL document) SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. SEI INVESTMENTS COMPANY Date: April 20, 2023 By: /s/ Dennis J. McGonigle Dennis J. McGonigle Chief Financial Officer