SEI Investments Company filings document operating results, investor communications, governance matters and capital actions for a Nasdaq-listed financial technology, operations and asset management company. Recent Form 8-K reports furnish quarterly earnings releases, earnings presentations and Regulation FD investor materials tied to SEI's operating performance and business positioning.
The company's definitive proxy materials cover board structure, executive compensation, equity awards and shareholder governance disclosures. Other material-event filings document executive employment arrangements, board leadership changes and stock repurchase authorizations. SEIC filings also identify its common stock, par value $0.01 per share, as registered on The Nasdaq Stock Market.
SEI INVESTMENTS CO (SEIC) had a notice filed for a planned sale of shares by director Carmen Romeo under Rule 144. The filing covers 5,000 shares of common stock, to be acquired via a stock option exercise and handled as a broker payment for cashless exercise on 09/01/2026, with Charles Schwab & Co., Inc. listed as broker. The notice identifies NASDAQ as the trading market.
For SEI INVESTMENTS CO (SEIC), Executive Vice President Michael Peterson exercised options for 37,500 shares of common stock at an exercise price of $56.54 per share and on the same date sold 37,500 shares at a weighted average price of $111.51 per share, within a range of $111.19–$112.07. The exercised options, received as employment compensation, were fully exercised, leaving 0 options reported, and Peterson now holds 454 shares indirectly through the Employee Stock Purchase Plan.
SEI INVESTMENTS CO (SEIC) received a notice that officer Michael Peterson intends to sell shares of its common stock under Rule 144. The planned transaction covers 37,500 shares, to be executed through Charles Schwab in connection with an employee stock option exercise via a broker-assisted cashless exercise on 08/28/2026.
The notice also reports that during the prior three months, Peterson sold 25,000 shares of SEI Investments common stock on 07/28/2026 for total proceeds of $2,551,125.00.
SEI Investments filed a Form 13F-HR as an institutional investment manager, reporting its discretionary equity holdings and those of key operating subsidiaries. The filing is a 13F Combination Report, meaning part of the holdings are reported directly and part through other reporting managers.
SEI explains that investment and voting authority over Section 13(f) securities generally resides with subsidiaries such as SEI Investments Management Corporation, SEI Trust Company, and SEI Investments Canada Company, and that SEI itself disclaims investment discretion and voting authority, though positions are reported as having Sole Voting Authority under Form 13F instructions. The report covers 6,177 line-item holdings with an aggregate reported value of $113,347,285,164, and includes three other “included managers” plus a long list of separate “other managers reporting for this manager,” reflecting SEI’s use of sub-advisers and a manager-of-managers structure.
Loomis, Sayles & Co., L.P. reports beneficial ownership of SEI Investments Co common stock on a Schedule 13G/A. It reports 8,462,120.64 shares beneficially owned, representing 7.04% of the common stock. Loomis Sayles has sole voting power over 6,989,367 shares, with no shared voting power and no sole or shared dispositive power. Economic rights to dividends and sale proceeds belong to its clients, and no individual client has an interest exceeding 5% of the class.
SEI Investments Co reported a significant ownership position in Core University Living Real Estate Income Trust, holding 4,000,000 shares of common stock, representing 30.42% of the class, on a beneficial ownership basis.
The shares are held by SEI Core Property Fund, L.P., a private investment fund for which SEI Investments Management Corporation (SIMC), a subsidiary of SEI Investments Company, serves as investment adviser. SIMC has sole voting and dispositive power over the 4,000,000 shares under its investment management authority, while SEI Investments Company disclaims investment discretion or voting authority over these securities.
SEI Investments Executive Vice President and Head of SEI’s Investment Managers business, Philip McCabe, exercised employee stock options to acquire 30,000 shares of common stock at an exercise price of $49.63 per share on August 4–5, 2026.
He then sold 30,000 shares of common stock, including 24,957 shares at a weighted average of $105.038 per share (range $104.80–$105.19) and 5,043 shares at $105.50 per share. He also reports 2,738.9939 shares held indirectly through an Employee Stock Purchase Plan.
SEI Investments Company shareholder Philip McCabe filed to sell company stock under Rule 144. The filing covers 5,043 shares of common stock, with an aggregate market value of $532,036.00, to be sold on or about August 5, 2026 through Charles Schwab & Co., Inc. on NASDAQ. The sale is described as related to an Employee Stock Option Exercise and as a broker payment for a cashless exercise. Over the prior three months, McCabe reported selling 24,957 shares for $2,621,431.00.
SEI Investments director Kathryn McCarthy exercised options covering 10,000 shares of Common Stock at an exercise price of $71.1200 per share and on August 3, 2026 sold 10,000 shares in an open-market or private transaction at a weighted average price of $103.5350, within a $103.09–$103.87 range. The options had been granted as compensation for service on the Board of Directors.