SEIC - Sei Investments Co

Insider Sale by Warner Mark Andrew (In Remarks)

1 Month
After Trade
Before Trade

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Trade Summary

3 days ago, Warner Mark Andrew, serving as In Remarks at Sei Investments Co (SEIC), sold 4,000 shares at $91.16 per share, for a total transaction value of $364,640.00. Following this transaction, Warner Mark Andrew now holds 921 shares of SEIC.

This sale represents a 81.00% decrease in Warner Mark Andrew's stake in the company. This is considered a high-conviction trade given the significant change in ownership.

The trade was executed on Tuesday, April 28, 2026 and publicly disclosed via SEC Form 4 filing on Thursday, April 30, 2026, 2 days after the trade was made.

Sei Investments Co operates in the FINANCIAL SERVICES sector, specifically within the ASSET MANAGEMENT industry. Insider selling activity in this sector can provide valuable signals about industry trends and company-specific developments.

Warner Mark Andrew

In Remarks

Mark Andrew Warner is the Vice President, Controller, and Chief Accounting Officer (CAO) at SEI Investments Co (SEIC), a financial services firm specializing in asset management.[[1]](https://www.gurufocus.com/insider/228964/mark-andrew-warner)[[2]](https://ca.investing.com/news/insider-trading-news/sei-investments-officer-warner-sells-326960-in-shares-93CH-4482225)[[3]](https://www.fidelity.co.uk/factsheet-data/factsheet/US7841171033USD-sei-investment-co/profile) In this role, he oversees key accounting and financial reporting functions for the company, which is headquartered in Oaks, Pennsylvania.[[1]](https://www.gurufocus.com/insider/228964/mark-andrew-warner)[[3]](https://www.fidelity.co.uk/factsheet-data/factsheet/US7841171033USD-sei-investment-co/profile) Warner has engaged in recent insider transactions at SEIC, including selling 5,000 shares on March 3, 2025, for approximately $401,950, and on February 25, 2026, selling 4,000 shares for $326,960 while exercising options to acquire 4,000 shares as compensation.[[1]](https://www.gurufocus.com/insider/228964/mark-andrew-warner)[[2]](https://ca.investing.com/news/insider-trading-news/sei-investments-officer-warner-sells-326960-in-shares-93CH-4482225) As of early 2025, he owned 1,300 shares valued at around $110,201.[[1]](https://www.gurufocus.com/insider/228964/mark-andrew-warner) At age 57, Warner holds a significant position among SEIC's key executives, contributing to the company's operations with over 5,000 employees.[[3]](https://www.fidelity.co.uk/factsheet-data/factsheet/US7841171033USD-sei-investment-co/profile)[[5]](https://www.morningstar.com/stocks/xmex/seic/executive)

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Trade Price

$91.16

Quantity

4,000

Total Value

$364,640.00

Shares Owned

921

Trade Date

Tuesday, April 28, 2026

3 days ago

SEC Filing Date

Thursday, April 30, 2026

Filed 2 days after trade

FINANCIAL SERVICESASSET MANAGEMENT

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