NASDAQ:NATL

National Interstate Stock Insider Trading

*Your capital is at risk

$44.15

-0.0600 (-0.136%)

At Close: Jun 05, 2026

National Interstate Stock Insider Power

Based on the 100 latest insides trades, we have calculated the insider power to be positive at 46.43. In total, the insiders bought 1.36M and sold 335.82K NATL 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)	46.43
● Buy	1.36M shares
● Sell	335.82K shares
69% Buy Activity Negligible or No Correlation
Buy Signal Medium Confidence Mar 10, 2026 Analysis Breakdown: Supported by a positive Insider Power Score of 46.43. Confidence increased due to high data reliability score of 100.

Historical Insider Trades

Date	Type	Person	Role	Amount
May 21, 2026 Buy	Common Stock A-Award	Von Gillern Jeffry H. Director	Director	4 351 Value: $195.0K
May 21, 2026 Buy	Common Stock A-Award	Reece Joseph E Director	Director	4 351 Value: $195.0K
May 21, 2026 Buy	Common Stock A-Award	Niederauer Duncan L Director	Director	4 351 Value: $195.0K
May 21, 2026 Buy	Common Stock A-Award	Natoli Frank A Director	Director	4 351 Value: $195.0K
May 21, 2026 Buy	Common Stock A-Award	Baker Mary Ellen Director	Director	4 351 Value: $195.0K
May 21, 2026 Buy	Common Stock A-Award	Almeida Odilon Director	Director	4 351 Value: $195.0K
Mar 31, 2026 Buy	Phantom Stock Units A-Award	Reece Joseph E Director	Director	1 205 Value: $52.5K
Mar 10, 2026 Buy	Common Stock A-Award	Hornfeck Traci Chief Accounting Officer	Officer	8 977 Value: $400.0K
Mar 10, 2026 Buy	Common Stock A-Award	Burson Andrea Richards Chief Human Resources Officer	Officer	19 404 Value: $864.6K
Mar 10, 2026 Buy	Common Stock A-Award	Nunez Ricardo J EVP, General Counsel & Sectry	Officer	34 928 Value: $1.56M
Mar 10, 2026 Buy	Common Stock A-Award	Wamser R Andrew Jr EVP & Chief Financial Officer	C-Suite Officer	45 277 Value: $2.02M
Mar 10, 2026 Buy	Common Stock A-Award	Mackinnon Stuart EVP & Chief Operating Officer	C-Suite Officer	58 213 Value: $2.59M
Mar 10, 2026 Buy	Common Stock A-Award	Oliver Timothy Charles President & CEO	CEO / President	219 915 Value: $9.80M
Jan 30, 2026 Buy	Common Stock M-Exempt	Oliver Timothy Charles President & CEO	CEO / President	28 817 Value: $1.10M
Jan 30, 2026 Sell	Common Stock F-InKind	Oliver Timothy Charles President & CEO	CEO / President	12 997 Value: $495.3K
Jan 30, 2026 Sell	Performance-Based Restricted Stock Units D-Return	Oliver Timothy Charles President & CEO	CEO / President	25 026 Value: $0
Jan 30, 2026 Buy	Performance-Based Restricted Stock Units M-Exempt	Oliver Timothy Charles President & CEO	CEO / President	28 817 Value: $1.07M
Jan 30, 2026 Buy	Common Stock M-Exempt	Mackinnon Stuart EVP & Chief Operating Officer	C-Suite Officer	17 183 Value: $654.8K
Jan 30, 2026 Sell	Common Stock F-InKind	Mackinnon Stuart EVP & Chief Operating Officer	C-Suite Officer	6 762 Value: $257.7K
Jan 30, 2026 Sell	Performance-Based Restricted Stock Units D-Return	Mackinnon Stuart EVP & Chief Operating Officer	C-Suite Officer	14 923 Value: $0
Jan 30, 2026 Buy	Performance-Based Restricted Stock Units M-Exempt	Mackinnon Stuart EVP & Chief Operating Officer	C-Suite Officer	17 183 Value: $640.9K
Dec 31, 2025 Buy	Phantom Stock Units A-Award	Reece Joseph E Director	Director	1 378 Value: $52.5K
Dec 31, 2025 Sell	Common Stock F-InKind	Burson Andrea Richards Chief Human Resources Officer	Officer	445 Value: $17.0K
Dec 19, 2025 Sell	Common Stock F-InKind	Wamser R Andrew Jr EVP & Chief Financial Officer	C-Suite Officer	2 215 Value: $86.2K
Dec 19, 2025 Sell	Common Stock F-InKind	Oliver Timothy Charles President & CEO	CEO / President	17 084 Value: $664.9K

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