USLM
insider transactionsUNITED STATES LIME & MINERALS INC — buys & sells by directors, officers and 10% owners A shareholder owning more than 10% of the company. Must report trades, but usually a weaker signal than an officer or director. (SEC Form 4).
Net shares · 365d
-40.8K
0 buy · 40.8K sell
Net value · 365d
-$4.9M
$0 in · $4.9M out
Sentiment · 365d
Net selling
0% buying · 100% selling
Open-market trades · 365d
5
0 buy · 40.8K sell
Net buy / sell volume
Not enough data to chart yet.
Tap or hover the chart for daily net volume. Green = net buying, red = net selling.
All transactions
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Exercise·M
Director
$128.5K
12.0K sh · $10.71
Own New
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Exercise·M
Director
$128.5K
12.0K sh · $10.71
Own +12%
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Sell·S
Director
$153.8K
1.3K sh · $120.45
Own -36%
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Other·F
O'Neill Nathan KEY
Vice President
$19.6K
166 sh · $118.13
Own -2%
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Other·F
Vice President
$19.5K
165 sh · $118.13
Own -3%
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Other·F
Vice President
$16.1K
136 sh · $118.13
Own -3%
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Other·F
Gagnon John J KEY
Vice President
$14.5K
123 sh · $118.13
Own -2%
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Other·F
O'Neill Nathan KEY
Vice President
$13.0K
105 sh · $123.61
Own -1%
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Grant·A
O'Neill Nathan KEY
Vice President
$52.7K
426 sh · $123.61
Own +6%
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Other·F
Vice President
$11.7K
95 sh · $123.61
Own -1%
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Grant·A
Vice President
$52.7K
426 sh · $123.61
Own +7%
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Grant·A
Vice President
$41.5K
336 sh · $123.61
Own +7%
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Other·F
Vice President
$12.4K
100 sh · $123.61
Own -2%
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Other·F
Gagnon John J KEY
Vice President
$9.3K
75 sh · $123.61
Own -1%
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Grant·A
Gagnon John J KEY
Vice President
$26.0K
210 sh · $123.61
Own +4%
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Grant·A
BYRNE TIMOTHY W KEY
President & CEO
$5.7M
47.5K sh · $119.74
Own +71%
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Other·F
BYRNE TIMOTHY W KEY
President & CEO
$2.2M
18.7K sh · $119.74
Own -22%
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Other·G
Director
$0
100 sh
Own -1%
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Other·G
Director
$0
100 sh
Own -36%
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Other·G
Director
$0
80 sh
Own -1%
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Other·G
BYRNE TIMOTHY W KEY
President & CEO
$60.5K
500 sh · $120.99
Own -1%
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Sell·S
BYRNE TIMOTHY W KEY
President & CEO
$1.4M
11.5K sh · $119.43
Own -12%
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Sell·S
BYRNE TIMOTHY W KEY
President & CEO
$72.0K
596 sh · $120.76
Own -1%
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Sell·S
BYRNE TIMOTHY W KEY
President & CEO
$3.1M
26.0K sh · $120.88
Own -21%
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Sell·S
BYRNE TIMOTHY W KEY
President & CEO
$172.7K
1.4K sh · $124.18
Own -1%
| Date▾ | Insider | Type | Shares | Value |
|---|---|---|---|---|
| Mar 17, 2026 | DOUMET ANTOINE M | Exercise M | 12.0K | $128.5K |
| Mar 17, 2026 | DOUMET ANTOINE M | Exercise M | 12.0K | $128.5K |
| Mar 3, 2026 | Duhe Sandra C | Sell S | 1.3K | $153.8K |
| Feb 3, 2026 | O'Neill Nathan KEY | Other F | 166 | $19.6K |
| Feb 3, 2026 | Wiedemer Michael L KEY | Other F | 165 | $19.5K |
| Feb 3, 2026 | Stone Timothy Wade KEY | Other F | 136 | $16.1K |
| Feb 3, 2026 | Gagnon John J KEY | Other F | 123 | $14.5K |
| Feb 2, 2026 | O'Neill Nathan KEY | Other F | 105 | $13.0K |
| Feb 2, 2026 | O'Neill Nathan KEY | Grant A | 426 | $52.7K |
| Feb 2, 2026 | Wiedemer Michael L KEY | Other F | 95 | $11.7K |
| Feb 2, 2026 | Wiedemer Michael L KEY | Grant A | 426 | $52.7K |
| Feb 2, 2026 | Stone Timothy Wade KEY | Grant A | 336 | $41.5K |
| Feb 2, 2026 | Stone Timothy Wade KEY | Other F | 100 | $12.4K |
| Feb 2, 2026 | Gagnon John J KEY | Other F | 75 | $9.3K |
| Feb 2, 2026 | Gagnon John J KEY | Grant A | 210 | $26.0K |
| Dec 31, 2025 | BYRNE TIMOTHY W KEY | Grant A | 47.5K | $5.7M |
| Dec 31, 2025 | BYRNE TIMOTHY W KEY | Other F | 18.7K | $2.2M |
| Dec 4, 2025 | Hawkins Tom S Jr | Other G | 100 | $0 |
| Dec 4, 2025 | Hawkins Tom S Jr | Other G | 100 | $0 |
| Dec 4, 2025 | Hawkins Tom S Jr | Other G | 80 | $0 |
| Sep 5, 2025 | BYRNE TIMOTHY W KEY | Other G | 500 | $60.5K |
| Sep 4, 2025 | BYRNE TIMOTHY W KEY | Sell S | 11.5K | $1.4M |
| Sep 4, 2025 | BYRNE TIMOTHY W KEY | Sell S | 596 | $72.0K |
| Sep 3, 2025 | BYRNE TIMOTHY W KEY | Sell S | 26.0K | $3.1M |
| Sep 3, 2025 | BYRNE TIMOTHY W KEY | Sell S | 1.4K | $172.7K |
About USLM insider trading
This page tracks insider transactions for UNITED STATES LIME & MINERALS INC (USLM) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.