United States Lime & Minerals's three largest insider shareholders as of September 29, 2026 are Holdings Ltd. Candou (TenPercentOwner, 17.67Mn shares), Enterprises Ltd Inberdon (TenPercentOwner, 17.65Mn shares), Bill Hughes (Senior Vice President, 130.94K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Holdings Ltd. Candou | TenPercentOwner | 0 | 17,673,780 | 17,673,780 | 49.1% | 11 Sep, 2026 |
| 2 | Enterprises Ltd Inberdon | TenPercentOwner | 17,653,780 | 0 | 17,653,780 | 49.0% | 14 Dec, 2021 |
| 3 | Bill Hughes | Senior Vice President | 260,380 | 0 | 260,380 | 0.7% | 08 May, 2023 |
| 4 | Timothy W Byrne | President Ceo | 114,741 | 0 | 114,741 | 0.3% | 02 Jan, 2026 |
| 5 | Russell W Riggs | Vice President | 90,820 | 0 | 90,820 | 0.3% | 06 Feb, 2023 |
| 6 | Antoine M Doumet | Director | 90,000 | 0 | 90,000 | 0.2% | 11 Sep, 2026 |
| 7 | Richard W Cardin | Director | 36,336 | 0 | 36,336 | 0.1% | 04 May, 2026 |
| 8 | Ray M Harlin | Director | 20,000 | 0 | 20,000 | 0.1% | 03 May, 2022 |
| 9 | Tom S Jr Hawkins | Director | 11,356 | 0 | 11,356 | 0.0% | 05 May, 2026 |
| 10 | Michael L Wiedemer | Vice President | 11,211 | 0 | 11,211 | 0.0% | 04 Feb, 2026 |
| 11 | Nathan O'Neill | Vice President | 8,129 | 0 | 8,129 | 0.0% | 04 Feb, 2026 |
| 12 | Timothy Wade Stone | Vice President | 7,921 | 0 | 7,921 | 0.0% | 04 Feb, 2026 |
| 13 | John J Gagnon | Vice President | 6,151 | 0 | 6,151 | 0.0% | 04 Feb, 2026 |
| 14 | Lila R Weirich | Director | 4,176 | 0 | 4,176 | 0.0% | 04 May, 2026 |
| 15 | Jon A Wolkenstein | Director | 4,176 | 0 | 4,176 | 0.0% | 04 May, 2026 |
| 16 | Edward A Odishaw | Director | 4,000 | 0 | 4,000 | 0.0% | 03 May, 2022 |
| 17 | Sandra C Duhe | Director | 3,527 | 0 | 3,527 | 0.0% | 04 May, 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 |
|---|---|---|---|---|---|---|---|---|
| 09 Sep, 2026 | Holdings Ltd. Candou | TenPercentOwner | Acquired P | 20,000 | $110.00 | $2.20Mn | 17,673,780 | Indirect |
| 09 Sep, 2026 | Antoine M Doumet | Director | Disposed S | 20,000 | $110.00 | $2.20Mn | 90,000 | Direct |
| 01 May, 2026 | Tom S Jr Hawkins | Director | Acquired A | 1,273 | $110.00 | $140.03K | 11,356 | Direct |
| 01 May, 2026 | Sandra C Duhe | Director | Acquired A | 1,273 | $110.00 | $140.03K | 3,527 | Direct |
| 01 May, 2026 | Jon A Wolkenstein | Director | Acquired A | 1,273 | $110.00 | $140.03K | 4,176 | Direct |
| 01 May, 2026 | Richard W Cardin | Director | Acquired A | 1,273 | $110.00 | $140.03K | 17,006 | Direct |
| 01 May, 2026 | Lila R Weirich | Director | Acquired A | 1,273 | $110.00 | $140.03K | 4,176 | Direct |
| 01 May, 2026 | Antoine M Doumet | Director | Acquired M | 3,405 | $110.00 | $374.55K | 3,405 | Direct |
| 01 May, 2026 | Antoine M Doumet | Director | Acquired A | 3,405 | $110.00 | $374.55K | 3,405 | Direct |
| 17 Mar, 2026 | Antoine M Doumet | Director | Acquired M | 12,000 | $10.71 | $128.52K | 110,000 | Direct |
| 17 Mar, 2026 | Antoine M Doumet | Director | Disposed M | 12,000 | $10.71 | $128.52K | 0 | Direct |
| 03 Mar, 2026 | Sandra C Duhe | Director | Disposed S | 1,277 | $120.45 | $153.81K | 2,254 | Direct |
| 02 Feb, 2026 | Michael L Wiedemer | Vice President | Disposed F | 95 | $123.61 | $11.74K | 6,525 | Direct |
| 02 Feb, 2026 | John J Gagnon | Vice President | Disposed F | 75 | $123.61 | $9.27K | 6,064 | Direct |
| 02 Feb, 2026 | Timothy Wade Stone | Vice President | Disposed F | 100 | $123.61 | $12.36K | 4,976 | Direct |
| 02 Feb, 2026 | Nathan O'Neill | Vice President | Disposed F | 105 | $123.61 | $12.98K | 7,869 | Direct |
| 03 Feb, 2026 | John J Gagnon | Vice President | Disposed F | 123 | $118.13 | $14.53K | 5,941 | Direct |
| 03 Feb, 2026 | Michael L Wiedemer | Vice President | Disposed F | 165 | $118.13 | $19.49K | 6,360 | Direct |
| 03 Feb, 2026 | Timothy Wade Stone | Vice President | Disposed F | 136 | $118.13 | $16.07K | 4,840 | Direct |
| 03 Feb, 2026 | Nathan O'Neill | Vice President | Disposed F | 166 | $118.13 | $19.61K | 7,703 | Direct |