Form 4: CEO Dietrich's Routine MTX Stock Transactions

Minerals Technologies CEO Douglas T. Dietrich reported the exercise of deferred restricted stock units and subsequent tax-related share disposals.

Summary

• Douglas T. Dietrich, Chairman and CEO of Minerals Technologies Inc. (MTX), reported multiple transactions involving the company's common stock and deferred restricted stock units (DRSUs).
• On January 23, 2026, Dietrich acquired 11,016 shares of common stock upon the exercise of DRSUs at a price of $0.
• Concurrently on January 23, 2026, 6,092 shares of common stock were disposed of at $68.77 to satisfy tax withholding obligations related to the DRSU vesting.
• On January 26, 2026, Dietrich acquired an additional 11,123 shares of common stock upon the exercise of DRSUs at a price of $0.
• On the same date, January 26, 2026, 6,152 shares of common stock were disposed of at $68.89 to cover tax withholding obligations.
• Following these transactions, Dietrich directly beneficially owns 175,973 shares of common stock and indirectly owns 4,562.677 shares through a 401(k) plan as of January 21, 2026.
• The DRSUs exercised on January 23, 2026, were granted on January 23, 2024, and vest in three equal annual installments beginning January 23, 2025.
• The DRSUs exercised on January 26, 2026, were granted on January 24, 2023, and vest in three equal annual installments beginning January 24, 2024.

Sentiment

Score: 5

Explanation: The filing reports routine insider transactions related to executive compensation (vesting and tax withholding). These are expected events and do not inherently indicate a positive or negative shift in company fundamentals or management's outlook.

Positives

• The exercise of Deferred Restricted Stock Units (DRSUs) indicates the vesting of previously granted equity awards, reflecting the achievement of performance or service conditions.
• The acquisition of common stock through DRSU exercise increases the CEO's direct ownership in the company, demonstrating continued alignment with shareholder interests.

Negatives

• A portion of the acquired shares was immediately disposed of to cover tax withholding obligations, resulting in a reduction of the net shares added to direct beneficial ownership.

Future Outlook

NA

Industry Context

This filing details routine insider transactions related to executive compensation, which are common across all industries for publicly traded companies. It does not provide information on broader industry trends or competitive landscape.

Stakeholder Impact

• Shareholders: The transactions are routine and reflect standard executive compensation practices, with minimal direct impact on the company's overall share structure or market perception.
• Management: The CEO's direct beneficial ownership remains substantial, aligning his interests with long-term company performance.

Next Steps

• Future vesting of remaining Deferred Restricted Stock Units (DRSUs) will occur in subsequent annual installments as per the original grant terms.

Key Dates

Recommendation

The reported transactions are routine insider activities involving the vesting and exercise of equity awards and subsequent tax-related share disposals. These events are expected as part of executive compensation and do not provide new fundamental information that would warrant a change in investment recommendation. The CEO's continued significant direct and indirect ownership suggests ongoing alignment with shareholder interests, but the transactions themselves do not signal a strong buy or sell opportunity.

Keywords

MTX, Minerals Technologies, Douglas Dietrich, Form 4, Insider Transaction, Stock Vesting, DRSU, Equity Compensation, CEO Stock