enCore Energy's top three insider shareholders as of September 09, 2026 are William M Sheriff (Executive Chairman, 1.44Mn 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 | 1,412,169 | 25,000 | 1,437,169 | 42.6% | 20 May, 2026 |
| 2 | Dennis Stover | Director | 977,000 | 0 | 977,000 | 28.9% | 15 Oct, 2025 |
| 3 | William B. Harris | Director | 640,001 | 0 | 640,001 | 18.9% | 09 Oct, 2025 |
| 4 | Mark S Pelizza | Director | 238,238 | 0 | 238,238 | 7.1% | 15 Jun, 2026 |
| 5 | Richard H Little | Chief Executive Officer | 50,000 | 0 | 50,000 | 1.5% | 11 Jun, 2026 |
| 6 | Wayne W. Heili | Director | 35,000 | 0 | 35,000 | 1.0% | 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 |
|---|---|---|---|---|---|---|---|---|
| 17 Aug, 2026 | William M Sheriff | Executive Chairman | Acquired A | 101,351 | $0.00 | $0 | 101,351 | Direct |
| 17 Aug, 2026 | Mark S Pelizza | Director | Acquired A | 70,270 | $0.00 | $0 | 70,270 | Direct |
| 17 Aug, 2026 | William B. Harris | Director | Acquired A | 70,270 | $0.00 | $0 | 70,270 | Direct |
| 17 Aug, 2026 | Nathan Tewalt | Director | Acquired A | 70,270 | $0.00 | $0 | 70,270 | Direct |
| 17 Aug, 2026 | Wayne W. Heili | Director | Acquired A | 70,270 | $0.00 | $0 | 70,270 | Direct |
| 17 Aug, 2026 | Susan Hoxie-Key | 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 | Kevin L Kremke | Chief Financial Officer | Acquired A | 243,243 | $0.00 | $0 | 243,243 | Direct |
| 17 Aug, 2026 | William M Sheriff | Executive Chairman | Acquired A | 101,351 | $0.00 | $0 | 101,351 | Direct |
| 12 Jun, 2026 | Wayne W. Heili | Director | Acquired P | 35,000 | $1.44 | $50.40K | 35,000 | Direct |
| 11 Jun, 2026 | Mark S Pelizza | Director | Acquired P | 99,182 | $1.37 | $135.88K | 237,515 | Direct |
| 12 Jun, 2026 | Mark S Pelizza | Director | Acquired P | 723 | $1.39 | $1.00K | 238,238 | Direct |
| 09 Jun, 2026 | Richard H Little | Chief Executive Officer | Acquired P | 50,000 | $1.28 | $64.00K | 50,000 | Direct |
| 18 May, 2026 | William M Sheriff | Executive Chairman | Acquired P | 50,000 | $1.49 | $74.50K | 1,387,169 | Direct |
| 19 May, 2026 | William M Sheriff | Executive Chairman | Acquired P | 25,000 | $1.39 | $34.75K | 1,412,169 | Direct |
| 18 May, 2026 | William M Sheriff | Executive Chairman | Acquired P | 25,000 | $1.47 | $36.75K | 25,000 | Indirect |
| 20 Apr, 2026 | Richard H Little | Chief Executive Officer | Acquired A | 100,000 | $0.00 | $0 | 100,000 | Direct |
| 20 Apr, 2026 | Richard H Little | Chief Executive Officer | Acquired A | 300,000 | $0.00 | $0 | 300,000 | Direct |
| 06 Feb, 2026 | William M Sheriff | Director, Officer | Disposed S | 12,000 | $2.72 | $32.64K | 2,226,055 | Direct |
| 09 Feb, 2026 | William M Sheriff | Director, Officer | Disposed S | 12,000 | $2.80 | $33.60K | 2,214,055 | Direct |