Form 4: Kirby CEO Exercises Options, Sells Shares

Kirby Corp's CEO and Director, David W. Grzebinski, exercised stock options and subsequently sold an equal number of common shares on November 21, 2025, under a Rule 10b5-1 plan.

Summary

• David W. Grzebinski, CEO and Director of Kirby Corp (KEX), filed a Form 4 on November 24, 2025, reporting transactions that occurred on November 21, 2025.
• The transactions involved the exercise of 29,451 employee stock options at an exercise price of $73.93 per share.
• Concurrently, 29,451 shares of common stock were sold at a weighted average price of $107.41 per share, with sales ranging from $106.87 to $108.12.
• These transactions were conducted pursuant to a Rule 10b5-1 pre-arranged trading plan.
• Following these transactions, Grzebinski's direct beneficial ownership of common stock decreased from 109,160 shares to 79,709 shares.
• The options exercised were granted with an exercisable date of February 1, 2022, and an expiration date of February 1, 2026.

Sentiment

Score: 5

Explanation: The filing reports a pre-planned, routine insider transaction (exercise and sell-to-cover) under a 10b5-1 plan, which is generally neutral in sentiment. While it involves a sale, it's a common practice for executives to manage equity compensation.

Positives

• The exercise and sale under a 10b5-1 plan demonstrate a pre-determined strategy for managing equity compensation, reducing concerns about opportunistic insider trading.
• The sale price of $107.41 per share is significantly higher than the exercise price of $73.93, indicating a substantial gain for the CEO on these options.

Negatives

• The sale of 29,451 shares by a key executive, even under a 10b5-1 plan, represents a reduction in direct insider ownership, which some investors might view as a lack of confidence, although it is often for diversification or liquidity.

Future Outlook

The filing does not provide any forward-looking statements or guidance beyond the reported insider transaction.

Industry Context

This Form 4 filing reports a routine insider transaction under a Rule 10b5-1 plan and does not provide information relevant to broader industry trends or competitor analysis.

Related Party Transactions

• David W. Grzebinski, CEO and Director, engaged in an exercise of stock options and subsequent sale of common stock, which constitutes a related party transaction.

Stakeholder Impact

• Shareholders: The sale by the CEO could be perceived as a minor reduction in insider alignment, though it is a common practice for managing equity compensation and liquidity.

Key Dates

Keywords

KEX, Kirby Corp, insider trading, stock options, CEO, Form 4, share sale, 10b5-1 plan