NASDAQ:NATL

National Interstate Stock Insider Trading

*Your capital is at risk

$47.06

+0.0300 (+0.0638%)

At Close: Jul 28, 2026

National Interstate Stock Insider Power

Based on the 100 latest insides trades, we have calculated the insider power to be positive at 46.49. In total, the insiders bought 1.32M 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)	46.49
● Buy	1.32M shares
● Sell	335.82K shares
69% Buy Activity Weak Negative Correlation
Buy Signal Medium Confidence Mar 10, 2026 Analysis Breakdown: Supported by a positive Insider Power Score of 46.49. Confidence increased due to high data reliability score of 100.

Historical Insider Trades

Date	Type	Person	Role	Amount
Dec 19, 2025 Sell	Common Stock F-InKind	Oliver Timothy Charles President & CEO	CEO / President	17 084 Value: $664.9K
Dec 19, 2025 Sell	Common Stock F-InKind	Oliver Timothy Charles President & CEO	CEO / President	14 934 Value: $581.2K
Dec 19, 2025 Sell	Common Stock F-InKind	Nunez Ricardo J EVP, General Counsel & Sectry	Officer	2 073 Value: $80.7K
Dec 19, 2025 Sell	Common Stock F-InKind	Nunez Ricardo J EVP, General Counsel & Sectry	Officer	2 105 Value: $81.9K
Dec 19, 2025 Sell	Common Stock F-InKind	Mackinnon Stuart EVP & Chief Operating Officer	C-Suite Officer	4 066 Value: $158.2K
Dec 19, 2025 Sell	Common Stock F-InKind	Mackinnon Stuart EVP & Chief Operating Officer	C-Suite Officer	3 861 Value: $150.3K
Dec 19, 2025 Sell	Common Stock F-InKind	Burson Andrea Richards Chief Human Resources Officer	Officer	348 Value: $13.5K
Dec 19, 2025 Sell	Common Stock F-InKind	Burson Andrea Richards Chief Human Resources Officer	Officer	508 Value: $19.8K
Nov 19, 2025 Sell	Common Stock S-Sale	Frymire Michelle M Director	Director	8 786 Value: $307.7K
Nov 10, 2025 Buy	Common Stock M-Exempt	Oliver Timothy Charles President & CEO	CEO / President	172 711 Value: $2.94M
Nov 10, 2025 Sell	Common Stock F-InKind	Oliver Timothy Charles President & CEO	CEO / President	122 388 Value: $4.39M
Nov 10, 2025 Sell	Common Stock D-Return	Oliver Timothy Charles President & CEO	CEO / President	50 323 Value: $1.81M
Nov 10, 2025 Buy	Employee Stock Option (Right to Buy) M-Exempt	Oliver Timothy Charles President & CEO	CEO / President	172 711 Value: $2.94M
Sep 30, 2025 Buy	Phantom Stock Units A-Award	Reece Joseph E Director	Director	1 336 Value: $52.5K
Jun 30, 2025 Buy	Phantom Stock Units A-Award	Reece Joseph E Director	Director	1 840 Value: $52.5K
May 21, 2025 Buy	Common Stock M-Exempt	Begor Mark W Director	Director	2 690 Value: $69.9K
May 21, 2025 Buy	Common Stock A-Award	Reece Joseph E Director	Director	7 121 Value: $185.0K
May 21, 2025 Buy	Common Stock A-Award	Niederauer Duncan L Director	Director	7 121 Value: $185.0K
May 21, 2025 Buy	Common Stock A-Award	Natoli Frank A Director	Director	7 121 Value: $185.0K
May 21, 2025 Buy	Common Stock A-Award	Von Gillern Jeffry H. Director	Director	7 121 Value: $185.0K
May 21, 2025 Buy	Common Stock A-Award	Frymire Michelle M Director	Director	7 121 Value: $185.0K
May 21, 2025 Buy	Common Stock A-Award	Baker Mary Ellen Director	Director	7 121 Value: $185.0K
May 21, 2025 Buy	Common Stock A-Award	Almeida Odilon Director	Director	7 121 Value: $185.0K
May 21, 2025 Buy	Common Stock J-Other	Niederauer Duncan L Insider	Other	0 Value: $0
Apr 01, 2025 Buy	Common Stock A-Award	Hornfeck Traci Chief Accounting Officer	Officer	27 737 Value: $750.0K

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