SEIC (SEI Investments Co)
Insider Trading Activity
Every open-market purchase and sale reported by SEIC officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-03 | CARMEN ROMEO | Director | MIXED | — | — |
| 2026-09-01 | Michael Peterson | Executive Vice President | MIXED | — | — |
| 2026-08-06 | Philip McCabe | See Remarks | MIXED | — | — |
| 2026-08-06 | Philip McCabe | See Remarks | MIXED | — | — |
| 2026-08-04 | KATHRYN MCCARTHY | Director | MIXED | — | — |
| 2026-07-30 | Michael Peterson | Executive Vice President | MIXED | — | — |
| 2026-07-30 | Mark Andrew Warner | See Remarks* | MIXED | — | — |
| 2026-07-30 | CARL GUARINO | Director | MIXED | — | — |
| 2026-07-28 | Sneha S. Shah | See Remarks* | F | — | — |
| 2026-07-28 | Sanjay Sharma | See Remarks* | MIXED | — | — |
| 2026-06-29 | ALFRED P WEST JR | — | Sell | — | — |
| 2026-06-11 | WILLIAM DORAN | Director | Sell | — | — |
| 2026-05-05 | KATHRYN MCCARTHY | Director | MIXED | — | — |
| 2026-04-30 | Mark Andrew Warner | In Remarks | MIXED | — | — |
| 2026-04-24 | Philip McCabe | See Remarks | Sell | — | — |
| 2026-04-23 | Michael Peterson | EXECUTIVE VICE PRESIDENT | MIXED | — | — |
| 2026-04-23 | Sanjay Sharma | See Remarks* | MIXED | — | — |
| 2026-04-01 | Ryan Hicke | CHIEF EXECUTIVE OFFICER | — | — | — |
| 2026-04-01 | Ryan Hicke | CHIEF EXECUTIVE OFFICER | F | — | — |
| 2026-03-19 | Sean Denham | Executive VP, CFO, COO | F | — | — |
| 2026-03-12 | ALFRED P WEST JR | — | Sell | — | — |
| 2026-02-26 | Mark Andrew Warner | — | MIXED | — | — |
| 2026-02-02 | Ryan Hicke | CHIEF EXECUTIVE OFFICER | MIXED | — | — |
| 2026-01-02 | ALFRED P WEST JR | — | F | — | — |
| 2025-12-30 | CARMEN ROMEO | Director | G | — | — |
| 2025-12-29 | Philip McCabe | See Remarks | F | — | — |
| 2025-12-29 | Mark Andrew Warner | — | F | — | — |
| 2025-12-29 | ALFRED P WEST JR | Executive Chairman | F | — | — |
| 2025-12-29 | Michael Peterson | EXECUTIVE VICE PRESIDENT | F | — | — |
| 2025-12-29 | KATHRYN MCCARTHY | Director | F | — | — |
| 2025-12-23 | WILLIAM DORAN | Director | Sell | — | — |
| 2025-12-16 | WILLIAM DORAN | Director | A | — | — |
| 2025-12-16 | Jonathan Brassington | Director | A | — | — |
| 2025-12-16 | Thomas C. Naratil | Director | A | — | — |
| 2025-12-16 | CARMEN ROMEO | Director | A | — | — |
| 2025-12-16 | KATHRYN MCCARTHY | Director | A | — | — |
| 2025-12-16 | CARL GUARINO | Director | A | — | — |
| 2025-12-16 | Karin A. Risi | Director | A | — | — |
| 2025-12-16 | Sanjay Sharma | See Remarks* | A | — | — |
| 2025-12-16 | Ryan Hicke | CHIEF EXECUTIVE OFFICER | A | — | — |
| 2025-12-16 | Philip McCabe | See Remarks | A | — | — |
| 2025-12-16 | MICHAEL LANE | Executive Vice President | A | — | — |
| 2025-12-16 | Sean Denham | Executive Vice President, CFO | A | — | — |
| 2025-12-16 | Michael Peterson | EXECUTIVE VICE PRESIDENT | A | — | — |
| 2025-12-08 | Philip McCabe | See Remarks | MIXED | — | — |
| 2025-12-05 | ALFRED P WEST JR | Executive Chairman | MIXED | — | — |
| 2025-11-18 | WILLIAM DORAN | Director | M | — | — |
| 2025-11-13 | Michael Peterson | EXECUTIVE VICE PRESIDENT | MIXED | — | — |
| 2025-11-12 | CARMEN ROMEO | Director | MIXED | — | — |
| 2025-10-28 | Philip McCabe | See Remarks | M | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | Executive Chairman | 9,630,721 | — |
| — | Director | 6,245,586 | — |
| — | Director | 2,803,293 | — |
| — | Director | 651,977 | — |
| — | EVP, CFO | 609,163 | — |
| — | Director | 328,775 | — |
| — | CHIEF EXECUTIVE OFFICER | 207,920 | — |
| — | EXECUTIVE VICE PRESIDENT | 190,000 | — |
| — | Executive Vice President | 187,141 | — |
| — | EXECUTIVE VICE PRESIDENT | 186,224 | — |
| — | Director | 185,985 | — |
| — | EXECUTIVE VICE PRESIDENT | 110,956 | — |
| — | Director | 82,883 | — |
| — | See Remarks | 62,666 | — |
| — | Executive VP, CFO, COO | 58,364 | — |
| — | EXECUTIVE VICE PRESIDENT | 55,399 | — |
| — | EXECUTIVE VICE PRESIDENT | 42,753 | — |
| — | See Remarks* | 42,482 | — |
| — | EXECUTIVE VICE PRESIDENT | 42,194 | — |
| — | Executive Vice President | 42,185 | — |
| — | Executive Vice President | 39,337 | — |
| — | EXECUTIVE VICE PRESIDENT | 34,830 | — |
| — | Director | 28,708 | — |
| — | Executive Vice President | 20,602 | — |
| — | Director | 16,000 | — |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the SEIC quote page; the site-wide leaderboard is on the insider transactions hub.