Form 4: USLM CEO Sells Shares Under Pre-Arranged Plan

United States Lime & Minerals Inc. President and CEO Timothy W. Byrne sold a total of 39,525 common shares in early September 2025 through a Rule 10b5-1 plan.

Summary

• Timothy W. Byrne, President & CEO, Director, and 10% Owner of United States Lime & Minerals Inc. (USLM), reported multiple transactions involving the sale of common stock.
• On September 3, 2025, Byrne sold 26,034 shares at a weighted average price of $120.88, with prices ranging from $120.78 to $121.30.
• Also on September 3, 2025, an additional 1,391 shares were sold at a weighted average price of $124.18, with prices ranging from $124.00 to $124.37.
• On September 4, 2025, Byrne sold 11,504 shares at a weighted average price of $119.43, with prices ranging from $119.17 to $120.00.
• Another 596 shares were sold on September 4, 2025, at a weighted average price of $120.76, with prices ranging from $120.75 to $121.54.
• On September 5, 2025, 500 shares were disposed of (transaction code 'G') at a price of $120.99, which was the closing price on the preceding day.
• All reported transactions were made pursuant to a Rule 10b5-1(c) contract, instruction, or written plan.
• Following these transactions, Timothy W. Byrne beneficially owns 85,932 shares of USLM Common Stock directly.

Sentiment

Score: 4

Explanation: The filing reports significant insider selling by the CEO, which can be viewed negatively, though the use of a Rule 10b5-1 plan suggests a pre-scheduled transaction rather than a reaction to new information.

Positives

• The transactions were conducted under a Rule 10b5-1 plan, indicating they were pre-scheduled and not a reaction to immediate negative company news or market conditions.

Negatives

• Significant insider selling by the President and CEO, totaling 39,525 shares, could be perceived negatively by investors, potentially signaling a lack of conviction or a desire for diversification.
• The direct beneficial ownership of the CEO decreased from 99,923 shares to 85,932 shares following these transactions.

Future Outlook

This Form 4 filing does not contain any forward-looking statements or guidance regarding the company's future financial performance or strategic outlook.

Industry Context

This filing is a routine insider transaction report and does not provide information directly related to broader industry trends or competitive landscape for the lime and minerals sector.

Corporate Governance

Related Party Transactions

• The reported sales are insider transactions by the President and CEO, Timothy W. Byrne, which are a form of related party dealing.

Stakeholder Impact

• Shareholders may interpret the significant insider selling by the CEO as a signal, potentially influencing their perception of the company's future prospects or the stock's valuation.
• The use of a 10b5-1 plan provides transparency to investors regarding the pre-planned nature of the sales.

Key Dates

Recommendation

The significant sale of shares by the CEO, while conducted under a Rule 10b5-1 plan, warrants a cautious 'hold' recommendation. While the plan indicates pre-planning and not a reaction to immediate negative news, substantial insider selling can still signal a lack of conviction or a desire for diversification, which investors should monitor. Further analysis of company fundamentals and market conditions would be required for a stronger stance.

Keywords

USLM, United States Lime & Minerals, Timothy W Byrne, Insider Selling, Form 4, SEC Filing, CEO Stock Sale, 10b5-1 Plan, Common Stock