SEIC · Insider Trading
SEI Investments Co
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.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-10-01 | Alfred P West Jr | — | Sell | −33,877 | −$3.50M |
| 2026-09-24 | Michael Lane | Executive Vice President | Sell | −2,400 | −$246.67K |
| 2026-09-08 | Ryan Hicke | Chief Executive Officer | MIXED | — | −$2.01M |
| 2026-09-03 | Carmen Romeo | Director | MIXED | — | −$300.35K |
| 2026-09-01 | Michael Peterson | Executive Vice President | MIXED | — | −$2.06M |
| 2026-08-06 | Philip McCabe | See Remarks | MIXED | — | −$1.66M |
| 2026-08-06 | Philip McCabe | See Remarks | MIXED | — | −$1.66M |
| 2026-08-04 | Kathryn McCarthy | Director | MIXED | — | −$324.15K |
| 2026-07-30 | Michael Peterson | Executive Vice President | MIXED | — | −$1.16M |
| 2026-07-30 | Mark Andrew Warner | See Remarks* | MIXED | — | −$647.64K |
| 2026-07-30 | Carl Guarino | Director | MIXED | — | −$535.65K |
| 2026-07-28 | Sneha S. Shah | See Remarks* | F | −3,746 | −$362.35K |
| 2026-07-28 | Sanjay Sharma | See Remarks* | MIXED | — | −$564.19K |
| 2026-06-29 | Alfred P West Jr | — | Sell | −57,332 | −$5.00M |
| 2026-06-11 | William Doran | Director | Sell | −5,000 | −$452.50K |
| 2026-05-05 | Kathryn McCarthy | Director | MIXED | — | −$414.40K |
| 2026-04-30 | Mark Andrew Warner | In Remarks | MIXED | — | −$170.76K |
| 2026-04-24 | Philip McCabe | See Remarks | Sell | −15,000 | −$1.38M |
| 2026-04-23 | Michael Peterson | EXECUTIVE VICE PRESIDENT | MIXED | — | −$415.30K |
| 2026-04-23 | Sanjay Sharma | See Remarks* | MIXED | — | −$1.01M |
| 2026-04-01 | Ryan Hicke | CHIEF EXECUTIVE OFFICER | — | — | — |
| 2026-04-01 | Ryan Hicke | CHIEF EXECUTIVE OFFICER | F | −4,349 | −$335.79K |
| 2026-03-19 | Sean Denham | Executive VP, CFO, COO | F | −7,673 | −$604.40K |
| 2026-03-12 | Alfred P West Jr | — | Sell | −62,447 | −$5.00M |
| 2026-02-26 | Mark Andrew Warner | — | MIXED | — | −$42.48K |
| 2026-02-02 | Ryan Hicke | CHIEF EXECUTIVE OFFICER | MIXED | — | −$2.08M |
| 2026-01-02 | Alfred P West Jr | — | F | −3,482 | −$285.59K |
| 2025-12-30 | Carmen Romeo | Director | G | −15,500 | — |
| 2025-12-29 | Philip McCabe | See Remarks | F | −1,094 | −$88.89K |
| 2025-12-29 | Mark Andrew Warner | — | F | −379 | −$30.79K |
| 2025-12-29 | Alfred P West Jr | Executive Chairman | F | −1,100 | −$89.38K |
| 2025-12-29 | Michael Peterson | EXECUTIVE VICE PRESIDENT | F | −1,063 | −$86.37K |
| 2025-12-29 | Kathryn McCarthy | Director | F | −24 | −$1.95K |
| 2025-12-23 | William Doran | Director | Sell | −7,000 | −$586.95K |
| 2025-12-16 | William Doran | Director | A | +2,266 | — |
| 2025-12-16 | Jonathan Brassington | Director | A | +2,266 | — |
| 2025-12-16 | Thomas C. Naratil | Director | A | +2,266 | — |
| 2025-12-16 | Carmen Romeo | Director | A | +2,266 | — |
| 2025-12-16 | Kathryn McCarthy | Director | A | +2,266 | — |
| 2025-12-16 | Carl Guarino | Director | A | +2,266 | — |
| 2025-12-16 | Karin A. Risi | Director | A | +2,266 | — |
| 2025-12-16 | Sanjay Sharma | See Remarks* | A | +15,934 | — |
| 2025-12-16 | Ryan Hicke | CHIEF EXECUTIVE OFFICER | A | +25,904 | — |
| 2025-12-16 | Philip McCabe | See Remarks | A | +8,434 | — |
| 2025-12-16 | Michael Lane | Executive Vice President | A | +8,916 | — |
| 2025-12-16 | Sean Denham | Executive Vice President, CFO | A | +13,254 | — |
| 2025-12-16 | Michael Peterson | EXECUTIVE VICE PRESIDENT | A | +7,711 | — |
| 2025-12-08 | Philip McCabe | See Remarks | MIXED | — | −$333.24K |
| 2025-12-05 | Alfred P West Jr | Executive Chairman | MIXED | +5,230 | −$402.95K |
| 2025-11-18 | William Doran | Director | M | +10,000 | +$533.40K |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| Alfred P West Jr | Executive Chairman | 9,600,647 | $1.04B |
| Carmen Romeo | Director | 2,803,293 | $303.19M |
| William Doran | Director | 651,977 | $70.51M |
| Ryan Hicke | Chief Executive Officer | 225,482 | $24.39M |
| Kathryn McCarthy | Director | 82,883 | $8.96M |
| Philip McCabe | See Remarks | 62,666 | $6.78M |
| Sean Denham | Executive VP, CFO, COO | 58,364 | $6.31M |
| Sanjay Sharma | See Remarks* | 42,482 | $4.59M |
| Michael Lane | Executive Vice President | 39,911 | $4.32M |
| Carl Guarino | Director | 28,708 | $3.10M |
| Michael Peterson | Executive Vice President | 20,602 | $2.23M |
| Sneha S. Shah | See Remarks* | 14,312 | $1.55M |
| Jonathan Brassington | Director | 6,207 | $671.32K |
| Thomas C. Naratil | Director | 4,342 | $469.61K |
| Karin A. Risi | Director | 4,342 | $469.61K |
| Stephanie D. Miller | Director | 3,941 | $426.24K |
| Mark Andrew Warner | See Remarks* | 921 | $99.61K |
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.
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.