As of June 06, 2026, Sei Investments's top three insider holders are Alfred P Jr West (TenPercentOwner, 9.35Mn shares), Alfred P Jr West (TenPercentOwner, 9.06Mn shares), Alfred P Jr West (Executive Chairman, 6.88Mn shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Alfred P Jr West | - | 9,352,523 | 0 | 08 Dec, 2021 |
| Kathryn Mccarthy | - | 77,907 | 0 | 16 Dec, 2025 |
| Dennis Mcgonigle | Executive President | 611,663 | 0 | 01 Aug, 2022 |
| William Doran | - | 623,802 | 0 | 23 Dec, 2025 |
| Carl Guarino | - | 18,308 | 0 | 16 Dec, 2025 |
| Kathy Heilig | Treasurer | 1,891 | 0 | 21 Nov, 2022 |
| Carmen Romeo | Executive Vice President | 1,579,827 | 0 | 16 Dec, 2024 |
| Wayne Withrow | Executive Vice President | 55,399 | 0 | 09 Feb, 2024 |
| Stephen Meyer | Executive Vice President | 186,224 | 0 | 29 Nov, 2021 |
| Kevin Barr | Executive Vice President | 184,741 | 0 | 02 Dec, 2021 |
| Paul Klauder | Executive Vice President | 20,752 | 0 | 28 Mar, 2024 |
| Michael Peterson | Executive Vice President | 20,148 | 0 | 23 Apr, 2026 |
| Ryan Hicke | Chief Executive Officer | 192,815 | 0 | 01 Apr, 2026 |
| Sanjay Sharma | Evp (*Remarks) | 39,829 | 0 | 23 Apr, 2026 |
| Philip Mccabe | Evp Head Of Investment Mgmt | 54,884 | 0 | 24 Apr, 2026 |
| Jonathan Brassington | - | 6,207 | 0 | 16 Dec, 2025 |
| Mark Andrew Warner | - | 921 | 0 | 26 Feb, 2026 |
| Stephanie D. Miller | - | 3,941 | 0 | 16 Dec, 2024 |
| Thomas C. Naratil | - | 4,342 | 0 | 16 Dec, 2025 |
| Sean Denham | Executive Vp, Cfo, Coo | 57,758 | 0 | 19 Mar, 2026 |
| Michael Lane | Executive Vice President | 41,981 | 0 | 16 Dec, 2025 |
| Karin A. Risi | - | 4,342 | 0 | 16 Dec, 2025 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 23 Apr, 2026 | Philip Mccabe | Common Stock | D | 15,000 | $91.82 | 54,884 | D | S |
| 23 Apr, 2026 | Michael Peterson | Common Stock | A | 10,000 | $48.47 | 30,148 | D | M |
| 23 Apr, 2026 | Sanjay Sharma | Common Stock | A | 12,500 | $49.63 | 52,329 | D | M |
| 23 Apr, 2026 | Sanjay Sharma | Common Stock | A | 12,500 | $49.63 | 52,329 | D | M |
| 23 Apr, 2026 | Michael Peterson | Common Stock | D | 10,000 | $90.00 | 20,148 | D | S |
| 23 Apr, 2026 | Sanjay Sharma | Common Stock | A | 12,500 | $49.63 | 64,829 | D | M |
| 23 Apr, 2026 | Sanjay Sharma | Common Stock | A | 12,500 | $49.63 | 64,829 | D | M |
| 23 Apr, 2026 | Sanjay Sharma | Common Stock | D | 23,441 | $90.08 | 41,388 | D | S |
| 23 Apr, 2026 | Sanjay Sharma | Common Stock | D | 23,441 | $90.08 | 41,388 | D | S |
| 23 Apr, 2026 | Michael Peterson | Option to Purchase Common Stock | D | 10,000 | - | 0 | D | M |
| 23 Apr, 2026 | Sanjay Sharma | Common Stock | D | 1,559 | $90.73 | 39,829 | D | S |
| 23 Apr, 2026 | Sanjay Sharma | Common Stock | D | 1,559 | $90.73 | 39,829 | D | S |
| 23 Apr, 2026 | Sanjay Sharma | Option to Purchase Common Stock | D | 12,500 | - | 0 | D | M |
| 23 Apr, 2026 | Sanjay Sharma | Option to Purchase Common Stock | D | 12,500 | - | 0 | D | M |
| 23 Apr, 2026 | Sanjay Sharma | Option to Purchase Common Stock | D | 12,500 | - | 0 | D | M |
| 23 Apr, 2026 | Sanjay Sharma | Option to Purchase Common Stock | D | 12,500 | - | 0 | D | M |
| 31 Mar, 2026 | Ryan Hicke | Common Stock | D | 4,349 | $77.21 | 192,815 | D | F |
| 18 Mar, 2026 | Sean Denham | Common Stock | D | 7,673 | $78.77 | 57,758 | D | F |
| 10 Mar, 2026 | Alfred P Jr West | Common Stock | D | 178 | $78.88 | 6,938,052 | D | S |
| 10 Mar, 2026 | Alfred P Jr West | Common Stock | D | 178 | $78.88 | 6,938,052 | D | S |