SEI's three largest insider shareholders as of September 29, 2026 are W Howard Jr Keenan (Director, 7.08Mn shares), Energy Partners X, L.P. Yorktown (TenPercentOwner, 7.08Mn shares), W Howard Jr Keenan (Director, 5.08Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Energy Partners X, L.P. Yorktown | TenPercentOwner | 7,079,234 | 0 | 7,079,234 | 34.3% | 18 Dec, 2024 |
| 2 | W Howard Jr Keenan | Director | 92,039 | 5,079,234 | 5,171,273 | 25.1% | 25 Aug, 2026 |
| 3 | Holdings, Lp Thrc | TenPercentOwner | 3,178,875 | 0 | 3,178,875 | 15.4% | 12 Dec, 2023 |
| 4 | Turbines, Inc. J | TenPercentOwner | 2,114,783 | 0 | 2,114,783 | 10.3% | 29 Jul, 2025 |
| 5 | William A Zartler | Chairman And Co Ceo | 1,314,883 | 0 | 1,314,883 | 6.4% | 03 Mar, 2026 |
| 6 | Kyle S. Ramachandran | President | 407,779 | 0 | 407,779 | 2.0% | 03 Mar, 2026 |
| 7 | Amanda M Brock | Co Chief Executive Officer | 276,080 | 0 | 276,080 | 1.3% | 03 Mar, 2026 |
| 8 | Kelly L. Price | Chief Operating Officer | 271,519 | 0 | 271,519 | 1.3% | 04 Mar, 2025 |
| 9 | Cynthia M. Durrett | Chief Administrative Officer | 154,527 | 0 | 154,527 | 0.7% | 03 Mar, 2026 |
| 10 | Aj Teague | Director | 116,865 | 14,960 | 131,825 | 0.6% | 09 Sep, 2026 |
| 11 | Christopher M Powell | Chief Legal Officer | 114,117 | 0 | 114,117 | 0.6% | 12 May, 2026 |
| 12 | Edgar R. Jr. Giesinger | Director | 94,202 | 0 | 94,202 | 0.5% | 25 Aug, 2026 |
| 13 | F Gardner Parker | Director | 84,812 | 0 | 84,812 | 0.4% | 27 Aug, 2024 |
| 14 | James R Burke | Director | 51,505 | 0 | 51,505 | 0.2% | 25 Aug, 2026 |
| 15 | Laurie H Argo | Director | 48,170 | 0 | 48,170 | 0.2% | 25 Aug, 2026 |
| 16 | Lindsay R. Bourg | Chief Accounting Officer | 34,815 | 0 | 34,815 | 0.2% | 03 Mar, 2023 |
| 17 | Christopher P. Wirtz | Chief Accounting Officer | 34,782 | 0 | 34,782 | 0.2% | 02 Jun, 2026 |
| 18 | Stephan E Tompsett | Chief Financial Officer | 30,000 | 0 | 30,000 | 0.1% | 17 Feb, 2026 |
| 19 | Mario Max Yzaguirre | Director | 11,484 | 0 | 11,484 | 0.1% | 25 Aug, 2026 |
| 20 | Ray N Jr Walker | Director | 8,835 | 0 | 8,835 | 0.0% | 25 Aug, 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 |
|---|---|---|---|---|---|---|---|---|
| 08 Sep, 2026 | Aj Teague | Director | Acquired P | 3,900 | $64.21 | $250.42K | 116,865 | Direct |
| 08 Sep, 2026 | Aj Teague | Director | Acquired P | 3,900 | $64.25 | $250.58K | 14,960 | Indirect |
| 23 Aug, 2026 | W Howard Jr Keenan | Director | Acquired A | 2,989 | $0.00 | $0 | 92,039 | Direct |
| 23 Aug, 2026 | Edgar R. Jr. Giesinger | Director | Acquired A | 3,246 | $0.00 | $0 | 94,202 | Direct |
| 23 Aug, 2026 | Ray N Jr Walker | Director | Acquired A | 3,075 | $0.00 | $0 | 8,835 | Direct |
| 23 Aug, 2026 | James R Burke | Director | Acquired A | 3,075 | $0.00 | $0 | 8,771 | Direct |
| 23 Aug, 2026 | Laurie H Argo | Director | Acquired A | 3,331 | $0.00 | $0 | 48,170 | Direct |
| 23 Aug, 2026 | Mario Max Yzaguirre | Director | Acquired A | 3,160 | $0.00 | $0 | 11,484 | Direct |
| 23 Aug, 2026 | Aj Teague | Director | Acquired A | 3,075 | $0.00 | $0 | 112,965 | Direct |
| 01 Jun, 2026 | Christopher P. Wirtz | Chief Accounting Officer | Disposed F | 1,303 | $69.54 | $90.61K | 34,782 | Direct |
| 12 May, 2026 | Laurie H Argo | Director | Disposed S | 5,200 | $72.88 | $378.98K | 44,839 | Direct |
| 13 May, 2026 | Christopher P. Wirtz | Chief Accounting Officer | Disposed S | 700 | $77.22 | $54.05K | 36,085 | Direct |
| 11 May, 2026 | Christopher M Powell | Chief Legal Officer | Disposed S | 9,179 | $73.90 | $678.33K | 141,790 | Direct |
| 11 May, 2026 | Christopher M Powell | Chief Legal Officer | Disposed S | 25,492 | $74.84 | $1.91Mn | 116,298 | Direct |
| 11 May, 2026 | Christopher M Powell | Chief Legal Officer | Disposed S | 2,181 | $75.33 | $164.29K | 114,117 | Direct |
| 08 May, 2026 | Ray N Jr Walker | Director | Disposed S | 56,841 | $72.11 | $4.10Mn | 5,760 | Direct |
| 08 May, 2026 | Aj Teague | Director | Acquired P | 3,425 | $72.98 | $249.96K | 109,890 | Direct |
| 08 May, 2026 | Aj Teague | Director | Acquired P | 2,750 | $72.98 | $200.70K | 11,060 | Indirect |
| 06 May, 2026 | W Howard Jr Keenan | Director | Disposed J | 2,000,000 | $0.00 | $0 | 5,079,234 | Indirect |
| 06 May, 2026 | W Howard Jr Keenan | Director | Acquired C | 2,000,000 | $0.00 | $0 | 2,000,000 | Indirect |