NYSE:KEX

Kirby Stock Insider Trading

Industrials > Marine Shipping

Buy KEX

*Your capital is at risk

$131.14

-1.20 (-0.91%)

At Close: Jul 31, 2026

Kirby Stock Insider Power

Based on the 100 latest insides trades, we have calculated the insider power to be negative at -63.80. In total, the insiders bought 295.98K and sold 120.42K KEX shares in the last 100 trades. The insider score can be negative despite buy/sell ratio being positive. The score focuses on the quality of the trades.

Insider Power (Last 100 transactions)	-63.80
● Buy	295.98K shares
● Sell	120.42K shares
77% Buy Activity Weak Negative Correlation
Sell Signal Medium Confidence May 15, 2026 Analysis Breakdown: Strongly supported by a very low Insider Power Score of -63.8. Confidence increased due to high data reliability score of 100.

Historical Insider Trades

Date	Type	Person	Role	Amount
Feb 03, 2026 Buy	Common Stock, par value $0.10 per share M-Exempt	Woodruff William Matthew Vp Of Public And Govt Affairs	Officer	1 109 Value: $133.8K
Feb 03, 2026 Sell	Common Stock, par value $0.10 per share F-InKind	Woodruff William Matthew Vp Of Public And Govt Affairs	Officer	475 Value: $57.3K
Feb 03, 2026 Buy	Restricted Stock Units M-Exempt	Woodruff William Matthew Vp Of Public And Govt Affairs	Officer	229 Value: $27.6K
Feb 03, 2026 Buy	Restricted Stock Units M-Exempt	Woodruff William Matthew Vp Of Public And Govt Affairs	Officer	299 Value: $36.1K
Feb 03, 2026 Buy	Restricted Stock Units M-Exempt	Woodruff William Matthew Vp Of Public And Govt Affairs	Officer	278 Value: $33.5K
Feb 03, 2026 Buy	Restricted Stock Units M-Exempt	Woodruff William Matthew Vp Of Public And Govt Affairs	Officer	303 Value: $36.6K
Feb 03, 2026 Buy	Common Stock, par value $0.10 per share M-Exempt	O'neil Christian G. President And COO	CEO / President	10 188 Value: $1.23M
Feb 03, 2026 Sell	Common Stock, par value $0.10 per share F-InKind	O'neil Christian G. President And COO	CEO / President	4 011 Value: $484.0K
Feb 03, 2026 Buy	Restricted Stock Units M-Exempt	O'neil Christian G. President And COO	CEO / President	2 291 Value: $276.5K
Feb 03, 2026 Buy	Restricted Stock Units M-Exempt	O'neil Christian G. President And COO	CEO / President	2 507 Value: $302.5K
Feb 03, 2026 Buy	Restricted Stock Units M-Exempt	O'neil Christian G. President And COO	CEO / President	2 662 Value: $321.3K
Feb 03, 2026 Buy	Restricted Stock Units M-Exempt	Grzebinski David W CEO	CEO / President	4 123 Value: $497.6K
Feb 03, 2026 Buy	Restricted Stock Units M-Exempt	Grzebinski David W CEO	CEO / President	4 955 Value: $598.0K
Feb 03, 2026 Buy	Restricted Stock Units M-Exempt	O'neil Christian G. President And COO	CEO / President	2 728 Value: $329.2K
Feb 03, 2026 Buy	Common Stock, par value $0.10 per share M-Exempt	Niemietz Kurt A. Vp Ir & Treasurer	Officer	1 656 Value: $199.8K
Feb 03, 2026 Sell	Common Stock, par value $0.10 per share F-InKind	Niemietz Kurt A. Vp Ir & Treasurer	Officer	693 Value: $83.6K
Feb 03, 2026 Buy	Restricted Stock Units M-Exempt	Niemietz Kurt A. Vp Ir & Treasurer	Officer	367 Value: $44.3K
Feb 03, 2026 Buy	Restricted Stock Units M-Exempt	Niemietz Kurt A. Vp Ir & Treasurer	Officer	418 Value: $50.4K
Feb 03, 2026 Buy	Restricted Stock Units M-Exempt	Niemietz Kurt A. Vp Ir & Treasurer	Officer	416 Value: $50.2K
Feb 03, 2026 Buy	Restricted Stock Units M-Exempt	Niemietz Kurt A. Vp Ir & Treasurer	Officer	455 Value: $54.9K
Feb 03, 2026 Buy	Common Stock, par value $0.10 per share M-Exempt	Miller Scott P Vp - Cio	Officer	5 375 Value: $648.7K
Feb 03, 2026 Sell	Common Stock, par value $0.10 per share F-InKind	Miller Scott P Vp - Cio	Officer	1 311 Value: $158.2K
Feb 03, 2026 Buy	Restricted Stock Units M-Exempt	Miller Scott P Vp - Cio	Officer	1 433 Value: $172.9K
Feb 03, 2026 Buy	Restricted Stock Units M-Exempt	Miller Scott P Vp - Cio	Officer	1 664 Value: $200.8K
Feb 03, 2026 Buy	Restricted Stock Units M-Exempt	Miller Scott P Vp - Cio	Officer	687 Value: $82.9K

About Insider Power

Insider Power is a proprietary algorithm developed by StockInvest.us to evaluate the significance of insider transactions. The calculation considers the size, type, and timing of transactions, as well as the insider’s role within the company.

It is important to note that, in general, there is little to no correlation between insider transactions and short-term stock price movements. In one of our studies, only 0.22%^* of stocks with insider activity showed a measurable correlation — and even then, it was unclear whether the effect was caused by insider actions or simply by the stock’s broader trend.

While our algorithms are designed to highlight potentially meaningful signals, these cannot be regarded as statistically significant on their own. Insider trading activity should therefore be seen as informative rather than as direct trading guidance. The Insider Power metric was created to present this information in a clearer and more accessible way, helping investors better understand the possible context of insider activity.

* October 6th, 2025 - Tested on 5562 stocks

ABOUT KIRBY CORPORATION

Kirby Corporation operates domestic tank barges in the United States. Its Marine Transportation segment provides marine transportation service and towing vessel transporting bulk liquid product, as well as operates tank barge throughout the Mississippi River System, on the Gulf Intracoastal Waterway, coastwise along three United States coasts, and in Alaska and Hawaii. It also transport petrochemical, black oil, refined petroleum product, and agr...

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