As of September 29, 2026, enCore Energy's top three insider holders are William M Sheriff (Executive Chairman, 1.74Mn shares), Dennis Stover (Director, 508.50K shares), Dennis Stover (Director, 468.50K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | William M Sheriff | Executive Chairman | 1,662,169 | 75,000 | 1,737,169 | 46.6% | 21 Sep, 2026 |
| 2 | Dennis Stover | Director | 977,000 | 0 | 977,000 | 26.2% | 15 Oct, 2025 |
| 3 | William B. Harris | Director | 640,001 | 0 | 640,001 | 17.2% | 09 Oct, 2025 |
| 4 | Mark S Pelizza | Director | 238,238 | 0 | 238,238 | 6.4% | 15 Jun, 2026 |
| 5 | Richard H Little | Chief Executive Officer | 60,000 | 0 | 60,000 | 1.6% | 22 Sep, 2026 |
| 6 | Dain A Mccoig | Chief Operating Officer | 39,183 | 0 | 39,183 | 1.1% | 28 Sep, 2026 |
| 7 | Wayne W. Heili | Director | 35,000 | 0 | 35,000 | 0.9% | 16 Jun, 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 |
|---|---|---|---|---|---|---|---|---|
| 24 Sep, 2026 | Dain A Mccoig | Chief Operating Officer | Acquired M | 25,000 | — | — | 45,271 | Direct |
| 24 Sep, 2026 | Dain A Mccoig | Chief Operating Officer | Disposed F | 6,088 | $1.22 | $7.43K | 39,183 | Direct |
| 24 Sep, 2026 | Dain A Mccoig | Chief Operating Officer | Disposed M | 25,000 | $0.00 | $0 | 75,000 | Direct |
| 21 Sep, 2026 | Richard H Little | Chief Executive Officer | Acquired P | 10,000 | $1.06 | $10.60K | 60,000 | Direct |
| 18 Sep, 2026 | William M Sheriff | Executive Chairman | Acquired P | 100,000 | $0.81 | $81.00K | 1,662,169 | Direct |
| 18 Sep, 2026 | William M Sheriff | Executive Chairman | Acquired P | 25,000 | $0.81 | $20.25K | 75,000 | Indirect |
| 17 Aug, 2026 | Nathan Tewalt | Director | Acquired A | 70,270 | $0.00 | $0 | 70,270 | Direct |
| 17 Aug, 2026 | Mark S Pelizza | Director | Acquired A | 70,270 | $0.00 | $0 | 70,270 | Direct |
| 17 Aug, 2026 | Kevin L Kremke | Chief Financial Officer | Acquired A | 162,162 | $0.00 | $0 | 162,162 | Direct |
| 17 Aug, 2026 | William B. Harris | Director | Acquired A | 70,270 | $0.00 | $0 | 70,270 | Direct |
| 17 Aug, 2026 | William M Sheriff | Executive Chairman | Acquired A | 101,351 | $0.00 | $0 | 101,351 | Direct |
| 17 Aug, 2026 | Wayne W. Heili | Director | Acquired A | 70,270 | $0.00 | $0 | 70,270 | Direct |
| 17 Aug, 2026 | Robert W. Hudson | General Counsel And Secretary | Acquired A | 51,081 | $0.00 | $0 | 51,081 | Direct |
| 17 Aug, 2026 | Susan Hoxie-Key | Director | Acquired A | 70,270 | $0.00 | $0 | 70,270 | Direct |
| 17 Aug, 2026 | Dain A Mccoig | Chief Operating Officer | Acquired A | 94,595 | $0.00 | $0 | 94,595 | Direct |
| 17 Aug, 2026 | Dain A Mccoig | Chief Operating Officer | Acquired A | 141,892 | $0.00 | $0 | 141,892 | Direct |
| 17 Aug, 2026 | William M Sheriff | Executive Chairman | Acquired A | 101,351 | $0.00 | $0 | 101,351 | Direct |
| 17 Aug, 2026 | Robert W. Hudson | General Counsel And Secretary | Acquired A | 76,622 | $0.00 | $0 | 76,622 | Direct |
| 17 Aug, 2026 | Kevin L Kremke | Chief Financial Officer | Acquired A | 243,243 | $0.00 | $0 | 243,243 | Direct |
| 12 Jun, 2026 | Wayne W. Heili | Director | Acquired P | 35,000 | $1.44 | $50.40K | 35,000 | Direct |