USLM (United States Lime & Minerals)
Insider Trading Activity
Every open-market purchase and sale reported by USLM officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-11 | Candou Holdings Ltd. | 10%+ Owner | Buy | — | — |
| 2026-09-11 | ANTOINE M DOUMET | Director | Sell | — | — |
| 2026-05-05 | Tom S Hawkins Jr | Director | A | — | — |
| 2026-05-04 | Jon A Wolkenstein | Director | A | — | — |
| 2026-05-04 | RICHARD W CARDIN | Director | A | — | — |
| 2026-05-04 | ANTOINE M DOUMET | Director | M | — | — |
| 2026-05-04 | ANTOINE M DOUMET | Director | A | — | — |
| 2026-05-04 | Lila R Weirich | Director | A | — | — |
| 2026-05-04 | Sandra C Duhe | Director | A | — | — |
| 2026-03-18 | ANTOINE M DOUMET | Director | M | — | — |
| 2026-03-04 | Sandra C Duhe | Director | Sell | — | — |
| 2026-02-04 | Timothy Wade Stone | Vice President | MIXED | — | — |
| 2026-02-04 | John J Gagnon | Vice President | MIXED | — | — |
| 2026-02-04 | Nathan O'Neill | Vice President | MIXED | — | — |
| 2026-02-04 | Michael L Wiedemer | Vice President | MIXED | — | — |
| 2026-01-02 | TIMOTHY W BYRNE | President & CEO | MIXED | — | — |
| 2025-12-05 | Tom S Hawkins Jr | Director | G | — | — |
| 2025-09-05 | TIMOTHY W BYRNE | President & CEO | MIXED | — | — |
| 2025-05-05 | Sandra C Duhe | Director | A | — | — |
| 2025-05-05 | RICHARD W CARDIN | Director | A | — | — |
| 2025-05-05 | Tom S Hawkins Jr | Director | A | — | — |
| 2025-05-05 | Jon A Wolkenstein | Director | A | — | — |
| 2025-05-05 | ANTOINE M DOUMET | Director | A | — | — |
| 2025-05-05 | Lila R Weirich | Director | A | — | — |
| 2025-03-05 | ANTOINE M DOUMET | Director | M | — | — |
| 2025-02-25 | Sandra C Duhe | Director | Sell | — | — |
| 2025-02-07 | Timothy Wade Stone | Vice President | G | — | — |
| 2025-02-04 | Timothy Wade Stone | Vice President | MIXED | — | — |
| 2025-02-04 | Michael L Wiedemer | Vice President | MIXED | — | — |
| 2025-02-04 | Nathan O'Neill | Vice President | MIXED | — | — |
| 2025-02-04 | John J Gagnon | Vice President | MIXED | — | — |
| 2024-12-31 | TIMOTHY W BYRNE | President & CEO | MIXED | — | — |
| 2024-12-11 | Tom S Hawkins Jr | Director | G | — | — |
| 2024-11-21 | TIMOTHY W BYRNE | President & CEO | MIXED | — | — |
| 2024-11-13 | Nathan O'Neill | Vice President | Sell | — | — |
| 2024-11-04 | Lila R Weirich | Director | A | — | — |
| 2024-11-04 | Jon A Wolkenstein | Director | A | — | — |
| 2024-08-26 | RICHARD W CARDIN | Director | Sell | — | — |
| 2024-06-07 | TIMOTHY W BYRNE | President & CEO | Sell | — | — |
| 2024-05-08 | TIMOTHY W BYRNE | President & CEO | MIXED | — | — |
| 2024-05-03 | Tom S Hawkins Jr | Director | A | — | — |
| 2024-05-03 | ANTOINE M DOUMET | Director | A | — | — |
| 2024-05-03 | Sandra C Duhe | Director | A | — | — |
| 2024-05-03 | RICHARD W CARDIN | Director | A | — | — |
| 2024-03-14 | Timothy Wade Stone | Vice President | G | — | — |
| 2024-03-14 | Sandra C Duhe | Director | Sell | — | — |
| 2024-02-16 | TIMOTHY W BYRNE | President & CEO | Sell | — | — |
| 2024-02-12 | ANTOINE M DOUMET | Director | M | — | — |
| 2024-02-07 | Michael L Wiedemer | Vice President | MIXED | — | — |
| 2024-02-06 | Timothy Wade Stone | Vice President | MIXED | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | 10%+ Owner | 17,673,780 | — |
| — | 10%+ Owner | 17,653,780 | — |
| — | 10%+ Owner | 17,445,595 | — |
| — | 10%+ Owner | 3,181,175 | — |
| — | Director | 150,240 | — |
| — | President & CEO | 138,966 | — |
| — | Director | 90,000 | — |
| — | Vice President | 58,925 | — |
| — | Vice President | 45,640 | — |
| — | Vice President | 40,010 | — |
| — | Director | 24,885 | — |
| — | Director | 20,000 | — |
| — | Director | 17,006 | — |
| — | Vice President | 12,490 | — |
| — | Director | 11,536 | — |
| — | Vice President | 8,129 | — |
| — | Vice President | 6,360 | — |
| — | Vice President | 6,064 | — |
| — | Vice President | 4,840 | — |
| — | Director | 4,176 | — |
| — | Director | 4,176 | — |
| — | Director | 4,000 | — |
| — | Director | 3,527 | — |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the USLM quote page; the site-wide leaderboard is on the insider transactions hub.