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) is the issuer whose common stock BlackRock, Inc. reported beneficially owning 9,446,264 shares, or 7.9%, as of September 30, 2026. BlackRock reported sole voting power over 9,177,477 shares and sole dispositive power over 9,446,264 shares; shared voting and dispositive power were both zero.
BlackRock says the reported ownership reflects certain business units and excludes securities beneficially owned by other units whose ownership is disaggregated. It also states that no one person’s interest in SEI common stock exceeds 5% of the outstanding shares.
SEI Investments Company (SEIC) reported third-quarter revenue of $662.043 million, versus $578.511 million a year earlier, and operating income of $197.999 million, versus $159.961 million. Net income attributable to SEI was $168.258 million and diluted earnings per share were $1.38. The quarter included a $32.5 million one-time charge after SEI terminated the second stage of the Stratos transaction and paid Stratos $32.5 million.
For the nine months ended September 30, 2026, operating cash flow was $565.327 million, compared with $481.264 million. SEI repurchased 5,890,000 shares for $535.752 million. On October 20, the board approved an additional $800 million for the repurchase program; approximately $925.643 million of authorization remained.
On October 22, the UK Financial Conduct Authority lifted with immediate effect the requirement restricting SEI Investments (Europe) Limited’s onboarding of certain institutional clients and launch of new products or services. The subsidiary’s ability to onboard new institutional clients was fully restored, and it no longer needed FCA permission for new products, solutions or client engagements.
SEI Investments Company reported third-quarter 2026 revenue of $662.043 million, up 14% from a year earlier, and operating income of $197.999 million, up 24%. Diluted earnings per share rose 6% to $1.38; adjusted diluted EPS rose 24% to $1.64, and adjusted operating income increased 25% to $208.493 million. Adjusted operating margin reached 31%, up 260 basis points from Q3 2025. Other expense included a $32.5 million one-time charge associated with a termination agreement with Stratos regarding the planned purchase of NSC, a Mexican-based subsidiary.
Investment Advisors revenue rose 26%, Investment Managers 14% and Private Banks 11%; Institutional Investors revenue declined 2%. Sales events totaled $46.8 million for the quarter and $157.4 million year to date. SEI repurchased 2.0 million shares for $215.1 million at an average $105.24 per share. The board approved another $800.0 million for the repurchase program, raising available authorization to approximately $925.6 million. Assets under management were $606.4 billion at quarter-end, down 0.1% from Q2; assets managed, advised or administered totaled approximately $2.1 trillion as of September 30, 2026.
SEI Investments Co. (SEIC) Chairman Emeritus Alfred P. West Jr. reported selling 28,394 common shares on September 29, 2026, at a weighted average of $103.403 per share, and 5,483 common shares on September 30, 2026, at a weighted average of $103.162 per share. The sale-price ranges were $103.17 to $103.67 on September 29 and $102.96 to $103.89 on September 30. No Rule 10b5-1 plan is reported.
SEI Investments Company affiliate Alfred P. West, Jr. reported a proposed sale of 35,000 common shares through J.P. Morgan Securities LLC as agent and attorney-in-fact, with an approximate sale date of September 29, 2026. The notice lists an aggregate market value of $3,668,700. The shares were acquired from the issuer in a private transaction on November 1, 2019.
SEI INVESTMENTS CO Executive Vice President Michael Lane sold 2,400 common shares on September 22, 2026, at a weighted average price of $102.78 per share; the reported sale prices ranged from $102.76 to $102.79. He directly held 39,581 shares after the sale. Separately, 330 shares were held indirectly through the Employee Stock Purchase Plan, with a footnote describing approximately 125 shares purchased through that plan. No Rule 10b5-1 plan is reported.
SEI INVESTMENTS CO (SEIC) is the issuer for a planned sale of common stock disclosed by officer Michael Lane in a notice filed under Rule 144. The filing covers up to 2,400 shares of common stock to be sold through Charles Schwab, with a proposed sale date of September 22, 2026 on NASDAQ.
The shares to be sold relate to a Restricted Stock Lapse dated September 16, 2026 and are identified as Equity Compensation from SEI INVESTMENTS CO.
SEI INVESTMENTS CO (SEIC) reported that Chief Executive Officer Ryan Hicke exercised employee stock options and sold the resulting shares on September 3, 2026. He exercised options covering 17,500 shares at $48.47 per share and 20,000 shares at $64.43 per share, which had been received as employment compensation. The resulting 37,500 shares of common stock were then sold at a weighted-average price of $110.711 per share, with individual sale prices ranging from $110.35 to $110.91. After these transactions, he also reported 15,167.785 shares of common stock held indirectly through a 401(k) plan. No Rule 10b5-1 trading plan is reported for these transactions.
SEI INVESTMENTS CO (SEIC) director Carmen Romeo reported an option exercise and same‑day share sale. On September 1, 2026, Romeo exercised options to acquire 5,000 shares of common stock at $49.63 per share as compensation for Board service, then sold 5,000 shares at a weighted‑average price in the $109.68–$109.70 range. The reported option grant tied to this transaction was fully exercised, and no Rule 10b5‑1 trading plan is indicated.
SEI INVESTMENTS CO (SEIC) received a notice under Rule 144 that Ryan Hicke intends to sell common stock in connection with an employee stock option exercise through a broker-assisted, cashless transaction. The notice covers 37,500 shares of common stock, with an indicated aggregate market value of $4,151,672. The filing lists 120,019,182 shares outstanding of the same class and identifies September 3, 2026 as the relevant date for the proposed sale and option exercise.