Form 4: SEI Investments Chairman Emeritus Sells Shares

Alfred P. West Jr., Chairman Emeritus of SEI Investments Co., reported the sale of 62,447 shares of common stock over two days in March 2026.

Summary

• Alfred P. West Jr., Chairman Emeritus of SEI Investments Co. (SEIC), reported multiple sales of common stock.
• On March 10, 2026, a total of 55,000 shares were sold across three transactions at prices ranging from $78.88 to $80.47 per share.
• On March 11, 2026, an additional 7,447 shares were sold across two transactions at prices ranging from $79.11 to $79.94 per share.
• The total number of shares sold across these transactions is 62,447.
• Following these transactions, Alfred P. West Jr. beneficially owns 6,875,783 shares of SEI Investments Co. common stock directly.
• The transactions were made pursuant to a Rule 10b5-1(c) plan.

Sentiment

Score: 4

Explanation: StockSavvy.ai views this as slightly negative due to insider selling, but the impact is mitigated by the 10b5-1 plan and the substantial remaining stake, suggesting a routine portfolio management rather than a lack of confidence.

Positives

• The sales were executed under a Rule 10b5-1(c) plan, indicating a pre-arranged trading plan rather than a reaction to immediate market conditions.
• Alfred P. West Jr. retains a substantial beneficial ownership of 6,875,783 shares, demonstrating continued alignment with shareholder interests.

Negatives

• Insider selling, even under a 10b5-1 plan, can sometimes be perceived negatively by the market as it indicates a reduction in an insider's stake.

Future Outlook

NA

Management Comments

• The reporting person undertakes to provide to the Staff of the Securities and Exchange Commission, the Company, or any stockholder of the Company, upon request, full information regarding the number of shares sold at each separate price.

Industry Context

StockSavvy.ai notes that insider selling, even when pre-scheduled via a 10b5-1 plan, is often scrutinized by investors for potential signals about management's confidence in the company's future prospects. While these sales represent a small fraction of Alfred P. West Jr.'s total holdings, they are part of a broader trend of insiders managing their personal portfolios.

Comparison to Industry Standards

• StockSavvy.ai observes that 10b5-1 plans are a common mechanism for corporate insiders to sell shares systematically and avoid accusations of trading on material non-public information.
• Many executives across the financial services industry, including those at firms like BlackRock or Vanguard, utilize similar plans for personal liquidity and diversification, making these transactions consistent with typical insider trading practices rather than indicative of unique company-specific issues.

Related Party Transactions

• The reported transactions are sales of common stock by Alfred P. West Jr., Chairman Emeritus of SEI Investments Co., making them related party transactions by definition of insider trading.

Stakeholder Impact

• Shareholders: May interpret the insider sales as a slight negative signal, though the 10b5-1 plan and large remaining holdings temper this.
• Employees, Customers, Suppliers, Creditors: Unlikely to be directly impacted by these routine insider sales.

Key Dates

Recommendation

While insider selling can be a negative signal, these sales were conducted under a pre-arranged 10b5-1 plan, suggesting a planned diversification or liquidity event rather than a reaction to adverse company-specific news. The Chairman Emeritus still retains a significant stake in the company. Therefore, a 'hold' recommendation is appropriate, advising investors to monitor future developments without immediate action based solely on these transactions.

Keywords

SEI Investments, SEIC, Alfred P. West Jr., Insider Sale, Form 4, Stock Transaction, Chairman Emeritus, Equity Sales, 10b5-1 Plan