The most recent Sei Investments (SEIC) insider transaction: William Doran (Director) acquired 10,000 shares by exercising or converting derivatives on Nov 4, 2026, reported on Form 4 on Nov 5, 2026. So far in the quarter ending Dec 31, 2026, insiders were net buyers of 20.00K shares.
In the last 12 months, insiders at Sei Investments made open-market sales of $51.07 million (542.83K shares) and bought no shares on the open market.
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Alfred P Jr West | Executive Chairman | 15,846,366 | 0 | 15,846,366 | 71.6% | 01 Oct, 2026 |
| 2 | Carmen Romeo | Executive Vice President | 3,120,586 | 0 | 3,120,586 | 14.1% | 03 Sep, 2026 |
| 3 | Dennis Mcgonigle | Evp, Cfo | 1,782,489 | 0 | 1,782,489 | 8.1% | 01 Sep, 2023 |
| 4 | William Doran | Director | 638,802 | 0 | 638,802 | 2.9% | 05 Nov, 2026 |
| 5 | Ryan Hicke | Chief Executive Officer | 192,815 | 0 | 192,815 | 0.9% | 08 Sep, 2026 |
| 6 | Wayne Withrow | Executive Vice President | 147,777 | 0 | 147,777 | 0.7% | 09 Feb, 2024 |
| 7 | Sean Denham | Executive Vp, Cfo, Coo | 102,758 | 0 | 102,758 | 0.5% | 19 Mar, 2026 |
| 8 | Kathryn Mccarthy | Director | 77,883 | 0 | 77,883 | 0.4% | 04 Aug, 2026 |
| 9 | Philip Mccabe | Evp Head Of Investment Mgmt | 54,884 | 0 | 54,884 | 0.2% | 06 Aug, 2026 |
| 10 | Sanjay Sharma | Evp (*Remarks) | 39,829 | 0 | 39,829 | 0.2% | 28 Jul, 2026 |
| 11 | Michael Lane | Executive Vice President | 39,581 | 0 | 39,581 | 0.2% | 24 Sep, 2026 |
| 12 | Paul Klauder | Executive Vice President | 20,752 | 0 | 20,752 | 0.1% | 28 Mar, 2024 |
| 13 | Michael Peterson | Executive Vice President | 20,148 | 0 | 20,148 | 0.1% | 01 Sep, 2026 |
| 14 | Carl Guarino | Director | 18,308 | 0 | 18,308 | 0.1% | 30 Jul, 2026 |
| 15 | Sneha S. Shah | Officer | 14,092 | 0 | 14,092 | 0.1% | 28 Jul, 2026 |
| 16 | Jonathan Brassington | Director | 6,207 | 0 | 6,207 | 0.0% | 16 Dec, 2025 |
| 17 | Thomas C. Naratil | Director | 4,342 | 0 | 4,342 | 0.0% | 16 Dec, 2025 |
| 18 | Karin A. Risi | Director | 4,342 | 0 | 4,342 | 0.0% | 16 Dec, 2025 |
| 19 | Stephanie D. Miller | Director | 3,941 | 0 | 3,941 | 0.0% | 16 Dec, 2024 |
| 20 | Kathy Heilig | Treasurer | 1,891 | 0 | 1,891 | 0.0% | 21 Nov, 2022 |
| 21 | Mark Andrew Warner | In Remarks | 921 | 0 | 921 | 0.0% | 30 Jul, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 04 Nov, 2026 | William Doran | Director | Acquired M | 10,000 | $49.63 | $496.30K | 628,802 | Direct |
| 04 Nov, 2026 | William Doran | Director | Acquired M | 10,000 | $48.47 | $484.70K | 638,802 | Direct |
| 04 Nov, 2026 | William Doran | Director | Disposed M | 5,000 | — | — | 0 | Direct |
| 04 Nov, 2026 | William Doran | Director | Disposed M | 5,000 | — | — | 0 | Direct |
| 04 Nov, 2026 | William Doran | Director | Disposed M | 5,000 | — | — | 0 | Direct |
| 04 Nov, 2026 | William Doran | Director | Disposed M | 5,000 | — | — | 0 | Direct |
| 29 Sep, 2026 | Alfred P Jr West | Other | Disposed S | 28,394 | $103.40 | $2.94Mn | 6,790,057 | Direct |
| 30 Sep, 2026 | Alfred P Jr West | Other | Disposed S | 5,483 | $103.16 | $565.64K | 6,784,574 | Direct |
| 22 Sep, 2026 | Michael Lane | Executive Vice President | Disposed S | 2,400 | $102.78 | $246.67K | 39,581 | Direct |
| 03 Sep, 2026 | Ryan Hicke | Chief Executive Officer | Acquired M | 17,500 | $48.47 | $848.23K | 210,315 | Direct |
| 03 Sep, 2026 | Ryan Hicke | Chief Executive Officer | Acquired M | 20,000 | $64.43 | $1.29Mn | 230,315 | Direct |
| 03 Sep, 2026 | Ryan Hicke | Chief Executive Officer | Disposed S | 37,500 | $110.71 | $4.15Mn | 192,815 | Direct |
| 03 Sep, 2026 | Ryan Hicke | Chief Executive Officer | Disposed M | 17,500 | — | — | 0 | Direct |
| 03 Sep, 2026 | Ryan Hicke | Chief Executive Officer | Disposed M | 20,000 | — | — | 0 | Direct |
| 01 Sep, 2026 | Carmen Romeo | Director | Acquired M | 5,000 | $49.63 | $248.15K | 1,565,293 | Direct |
| 01 Sep, 2026 | Carmen Romeo | Director | Disposed S | 5,000 | $109.70 | $548.50K | 1,560,293 | Direct |
| 01 Sep, 2026 | Carmen Romeo | Director | Disposed M | 5,000 | — | — | 0 | Direct |
| 28 Aug, 2026 | Michael Peterson | Executive Vice President | Acquired M | 37,500 | $56.54 | $2.12Mn | 57,648 | Direct |
| 28 Aug, 2026 | Michael Peterson | Executive Vice President | Disposed S | 37,500 | $111.51 | $4.18Mn | 20,148 | Direct |
| 28 Aug, 2026 | Michael Peterson | Executive Vice President | Disposed M | 37,500 | — | — | 0 | Direct |