SEI Investments Co.

SEIC·NASDAQ·$90.76Share Price as of 11/2·$11BMarket Cap as of 11/2

Financials

10-QQ3 ended 09/30/2610/26/26 10-QQ2 ended 06/30/2607/27/26 10-QQ1 ended 03/31/2604/27/26 10-KFY 202502/23/26 10-QQ3 ended 09/30/2510/27/25

Disclosures

8-KCurrent report10/21/26 8-KCurrent report07/22/26 8-KCurrent report05/28/26 8-KCurrent report04/22/26 8-KCurrent report03/02/26

Prospectuses and Registrations

S-8Registration of securities for employees07/26/24 S-8Registration of securities for employees07/24/14

Proxies

DEF 14ADefinitive proxy04/15/26 DEFA14AAdditional proxy materials05/07/25 DEF 14ADefinitive proxy04/14/25 DEF 14ADefinitive proxy04/15/24 DEF 14ADefinitive proxy04/20/23

Ownership

Form 4Insider transaction10/01/26 144Proposed sale of securities09/29/26 Form 4Insider transaction09/24/26 144Proposed sale of securities09/22/26 Form 4Insider transaction09/08/26

Other

N-PXAnnual report of proxy voting record08/27/26 11-KEmployee stock purchase plan report06/23/26 ARSAnnual report to shareholders04/15/26 N-PXAnnual report of proxy voting record08/25/25 11-KEmployee stock purchase plan report06/24/25