SEIC's three largest insider shareholders as of May 14, 2026 are Alfred P Jr West (TenPercentOwner, 9.35Mn shares), Alfred P Jr West (TenPercentOwner, 9.35Mn shares), Alfred P Jr West (TenPercentOwner, 9.06Mn shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Alfred P Jr West | - | 9,352,523 | 0 | 08 Dec, 2021 |
| Alfred P Jr West | - | 9,352,523 | 0 | 08 Dec, 2021 |
| Alfred P Jr West | - | 9,061,792 | 0 | 16 Sep, 2022 |
| Alfred P Jr West | - | 9,061,792 | 0 | 16 Sep, 2022 |
| Alfred P Jr West | Executive Chairman | 6,875,783 | 0 | 12 Mar, 2026 |
| Alfred P Jr West | Executive Chairman | 6,875,783 | 0 | 12 Mar, 2026 |
| Carmen Romeo | Executive Vice President | 1,579,827 | 0 | 16 Dec, 2024 |
| Carmen Romeo | - | 1,560,293 | 0 | 30 Dec, 2025 |
| William Doran | - | 623,802 | 0 | 23 Dec, 2025 |
| Dennis Mcgonigle | Executive President | 611,663 | 0 | 01 Aug, 2022 |
| Dennis Mcgonigle | Executive Vice President | 594,163 | 0 | 04 Nov, 2021 |
| Dennis Mcgonigle | Evp, Cfo | 594,163 | 0 | 01 Sep, 2023 |
| Dennis Mcgonigle | Executive President | 576,663 | 0 | 01 Aug, 2022 |
| Ryan Hicke | Chief Executive Officer | 192,815 | 0 | 01 Apr, 2026 |
| Stephen Meyer | Executive Vice President | 186,224 | 0 | 29 Nov, 2021 |
| Kevin Barr | Executive Vice President | 184,741 | 0 | 02 Dec, 2021 |
| Kevin Barr | Executive Vice President | 144,741 | 0 | 02 Dec, 2021 |
| Kathryn Mccarthy | - | 77,907 | 0 | 16 Dec, 2025 |
| Sean Denham | Executive Vp, Cfo, Coo | 57,758 | 0 | 19 Mar, 2026 |
| Wayne Withrow | Executive Vice President | 55,399 | 0 | 09 Feb, 2024 |
| Wayne Withrow | Executive Vice President | 55,399 | 0 | 09 Feb, 2024 |
| Philip Mccabe | Evp Head Of Investment Mgmt | 54,884 | 0 | 24 Apr, 2026 |
| Wayne Withrow | Executive Vice President | 53,579 | 0 | 01 Nov, 2022 |
| Wayne Withrow | Executive Vice President | 53,579 | 0 | 01 Nov, 2022 |
| Sean Denham | Executive Vice President | 45,000 | 0 | 18 Mar, 2024 |
| Michael Lane | Executive Vice President | 41,981 | 0 | 16 Dec, 2025 |
| Sanjay Sharma | Evp (*Remarks) | 39,829 | 0 | 23 Apr, 2026 |
| Sanjay Sharma | Evp (*Remarks) | 39,829 | 0 | 16 Dec, 2025 |
| Wayne Withrow | Executive Vice President | 38,799 | 0 | 01 Nov, 2022 |
| Wayne Withrow | Executive Vice President | 38,799 | 0 | 01 Nov, 2022 |
| Paul Klauder | Executive Vice President | 20,752 | 0 | 28 Mar, 2024 |
| Michael Peterson | Executive Vice President | 20,148 | 0 | 23 Apr, 2026 |
| Carl Guarino | - | 18,308 | 0 | 16 Dec, 2025 |
| Jonathan Brassington | - | 6,207 | 0 | 16 Dec, 2025 |
| Thomas C. Naratil | - | 4,342 | 0 | 16 Dec, 2025 |
| Karin A. Risi | - | 4,342 | 0 | 16 Dec, 2025 |
| Stephanie D. Miller | - | 3,941 | 0 | 16 Dec, 2024 |
| Kathy Heilig | Treasurer | 1,891 | 0 | 21 Nov, 2022 |
| Mark Andrew Warner | - | 921 | 0 | 26 Feb, 2026 |
| Mark Andrew Warner | - | 921 | 0 | 26 Feb, 2026 |
* 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 | Philip Mccabe | Common Stock | D | 15,000 | $91.82 | 54,884 | D | S |
| 23 Apr, 2026 | Philip Mccabe | Common Stock | D | 15,000 | $91.82 | 54,884 | D | S |
| 23 Apr, 2026 | Philip Mccabe | Common Stock | D | 15,000 | $91.82 | 54,884 | D | S |
| 23 Apr, 2026 | Philip Mccabe | Common Stock | D | 15,000 | $91.82 | 54,884 | D | S |
| 23 Apr, 2026 | Sanjay Sharma | Common Stock | A | 12,500 | $49.63 | 52,329 | D | M |
| 23 Apr, 2026 | Michael Peterson | Common Stock | A | 10,000 | $48.47 | 30,148 | D | M |
| 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 | 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 | Michael Peterson | Common Stock | A | 10,000 | $48.47 | 30,148 | D | M |
| 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 | Michael Peterson | Common Stock | D | 10,000 | $90.00 | 20,148 | D | S |
| 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 | 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 |