Welcome to our dedicated page for SEI INVESTMENTS CO SEC filings (Ticker: SEIC), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
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 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.
SEI Investments Company Chief Accounting Officer and Controller Mark Andrew Warner reported a series of option exercises and related stock sales on July 28, 2026. He exercised employee stock options covering 15,000 shares of common stock at exercise prices of $64.4300 and $56.5400 per share, received as employment compensation. On the same date, he acquired 15,000 shares of common stock through these exercises and then sold an aggregate 15,000 shares in open-market or private transactions at per-share prices of $101.1050, $102.0110, and $102.9720, each representing a weighted average over price ranges from $100.45 to $103.23 as described in the footnotes.
SEI Investments Co Executive Vice President Michael Peterson exercised an option to acquire 25,000 shares of common stock at $55.73 per share, received as employment compensation, and on the same day sold 25,000 shares at a weighted average price of $102.05, within a $102.00 to $102.14 range. The option for 25,000 shares was fully exercised, and he continues to hold 362.2978 shares indirectly through the Employee Stock Purchase Plan.
SEI Investments Co director Carl Guarino reported exercising stock options covering 10,000 shares of Common Stock at an exercise price of $49.630 per share on July 28, 2026. The options, received as compensation for Board service, were followed by the sale of 10,000 shares of Common Stock at a weighted average price of $103.195 per share, within a range of $102.95 to $103.39, in open-market or private transactions.
SEI Investments Co. insider Mark Andrew Warner filed a notice related to common stock of SEI Investments Co., indicating a transaction through Charles Schwab & Co., Inc. for 15,000 shares, with an aggregate value of $1,535,187.00 dated 07/28/2026, described as an Employee Stock Option Exercise with a Broker Payment for Cashless Exercise.
The filing also lists a prior transaction in the past three months: on 04/28/2026, 4,000 shares of SEI Investments Co. common stock were sold for $364,640.00.