NASDAQ:JMSB

John Marshall Bancorp Stock Insider Trading

Financial Services > Banks - Regional

Buy JMSB

*Your capital is at risk

$23.20

+0.130 (+0.564%)

At Close: Jul 31, 2026

John Marshall Bancorp Stock Insider Power

Based on the 100 latest insides trades, we have calculated the insider power to be positive at 89.76. In total, the insiders bought 112.86K and sold 38.56K JMSB 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)	89.76
● Buy	112.86K shares
● Sell	38.56K shares
74% Buy Activity Weak Positive Correlation
Sell Signal Low Confidence Jun 17, 2026 Analysis Breakdown: Signal is highly questionable due to a strongly contradictory positive Insider Power Score of 89.76. Confidence increased due to high data reliability score of 100.

Historical Insider Trades

Date	Type	Person	Role	Amount
May 28, 2025 Buy	Common Stock P-Purchase	Kinney Jonathan Craig Director	Director	500 Value: $9K
May 28, 2025 Buy	Common Stock P-Purchase	Kinney Jonathan Craig Director	Director	500 Value: $9K
May 28, 2025 Buy	Common Stock P-Purchase	Kinney Jonathan Craig Director	Director	300 Value: $5K
May 05, 2025 Sell	Common Stock S-Sale	Mahan Oscar Leland Director	Director	1 733 Value: $29.5K
May 05, 2025 Sell	Common Stock S-Sale	Mahan Oscar Leland Director	Director	765 Value: $13.0K
May 05, 2025 Sell	Common Stock S-Sale	Mahan Oscar Leland Director	Director	125 Value: $2K
May 05, 2025 Sell	Common Stock S-Sale	Mahan Oscar Leland Director	Director	9 Value: $153
May 05, 2025 Sell	Common Stock S-Sale	Mahan Oscar Leland Director	Director	3 Value: $51
May 05, 2025 Sell	Common Stock S-Sale	Mahan Oscar Leland Director	Director	9 Value: $153
May 05, 2025 Sell	Common Stock S-Sale	Mahan Oscar Leland Director	Director	278 Value: $5K
May 05, 2025 Sell	Common Stock S-Sale	Mahan Oscar Leland Director	Director	156 Value: $3K
May 05, 2025 Sell	Common Stock S-Sale	Mahan Oscar Leland Director	Director	30 Value: $520
May 05, 2025 Sell	Common Stock S-Sale	Mahan Oscar Leland Director	Director	302 Value: $5K
May 05, 2025 Sell	Common Stock S-Sale	Mahan Oscar Leland Director	Director	100 Value: $2K
May 05, 2025 Sell	Common Stock S-Sale	Mahan Oscar Leland Director	Director	100 Value: $2K
May 05, 2025 Sell	Common Stock S-Sale	Mahan Oscar Leland Director	Director	3 Value: $51
May 05, 2025 Sell	Common Stock S-Sale	Mahan Oscar Leland Director	Director	300 Value: $5K
May 05, 2025 Sell	Common Stock S-Sale	Mahan Oscar Leland Director	Director	100 Value: $2K
May 05, 2025 Sell	Common Stock S-Sale	Mahan Oscar Leland Director	Director	1 116 Value: $19.1K
May 05, 2025 Sell	Common Stock S-Sale	Mahan Oscar Leland Director	Director	2 Value: $34
May 05, 2025 Sell	Common Stock S-Sale	Mahan Oscar Leland Director	Director	2 Value: $34
May 05, 2025 Sell	Common Stock S-Sale	Mahan Oscar Leland Director	Director	156 Value: $3K
May 05, 2025 Sell	Common Stock S-Sale	Mahan Oscar Leland Director	Director	278 Value: $5K
May 05, 2025 Sell	Common Stock S-Sale	Mahan Oscar Leland Director	Director	9 Value: $153
May 05, 2025 Sell	Common Stock S-Sale	Mahan Oscar Leland Director	Director	3 Value: $51

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