NYSE:GWH

Ess Tech Stock Insider Trading

Industrials > Electrical Equipment & Parts

Buy GWH

*Your capital is at risk

$0.92

-0.0600 (-6.12%)

At Close: Jun 03, 2026

ESS Tech Stock Insider Power

Based on the 100 latest insides trades, we have calculated the insider power to be positive at 86.37. In total, the insiders bought 5.02M and sold 352.75K GWH 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)	86.37
● Buy	5.02M shares
● Sell	352.75K shares
62% Buy Activity Strong Negative Correlation
Sell Signal Low Confidence May 22, 2026 Analysis Breakdown: Signal is highly questionable due to a strongly contradictory positive Insider Power Score of 86.37. Partially supported by a negative historical correlation. Confidence increased due to high data reliability score of 100.

Historical Insider Trades

Date	Type	Person	Role	Amount
May 17, 2024 Buy	Common Stock A-Award	Hossfeld Rich Director	Director	202 702 Value: $0
May 17, 2024 Buy	Common Stock A-Award	Garabedian Raffi Director	Director	202 702 Value: $0
May 17, 2024 Buy	Common Stock A-Award	Niggli Michael R Director	Director	202 702 Value: $0
May 17, 2024 Buy	Common Stock A-Award	Nijhawan Sandeep Director	Director	202 702 Value: $0
May 17, 2024 Buy	Common Stock A-Award	Quarls Harry Director	Director	202 702 Value: $0
May 17, 2024 Buy	Common Stock A-Award	Teamey Kyle Director	Director	202 702 Value: $0
May 17, 2024 Buy	Common Stock A-Award	Wellman Alexi Director	Director	202 702 Value: $0
May 17, 2024 Buy	Common Stock A-Award	Wellman Alexi Director	Director	202 702 Value: $0
May 17, 2024 Buy	Common Stock A-Award	Teamey Kyle Director	Director	202 702 Value: $0
May 17, 2024 Buy	Common Stock A-Award	Quarls Harry Director	Director	202 702 Value: $0
May 17, 2024 Buy	Common Stock A-Award	Garabedian Raffi Director	Director	202 702 Value: $0
May 17, 2024 Buy	Common Stock A-Award	Hossfeld Rich Director	Director	202 702 Value: $0
May 17, 2024 Buy	Common Stock A-Award	Nijhawan Sandeep Director	Director	202 702 Value: $0
May 17, 2024 Buy	Common Stock A-Award	Niggli Michael R Director	Director	202 702 Value: $0
May 15, 2024 Sell	Common Stock D-Return	Hossfeld Rich Director	Director	135 373 Value: $0
May 15, 2024 Sell	Common Stock D-Return	Hossfeld Rich Director	Director	135 373 Value: $0
May 14, 2024 Buy	Common Stock P-Purchase	Teamey Kyle Director	Director	1 250 Value: $987
Feb 20, 2024 Sell	Common Stock F-InKind	Rabb Anthony Chief Financial Officer	C-Suite Officer	1 044 Value: $14.3K
Feb 20, 2024 Sell	Common Stock F-InKind	Rabb Anthony Chief Financial Officer	C-Suite Officer	1 044 Value: $14.3K
Nov 20, 2023 Sell	Common Stock F-InKind	Rabb Anthony Chief Financial Officer	C-Suite Officer	4 298 Value: $75.4K
Nov 20, 2023 Sell	Common Stock F-InKind	Rabb Anthony Chief Financial Officer	C-Suite Officer	4 298 Value: $75.4K
Aug 20, 2023 Sell	Common Stock F-InKind	Rabb Anthony Chief Financial Officer	C-Suite Officer	106 Value: $2K
Aug 20, 2023 Sell	Common Stock F-InKind	Rabb Anthony Chief Financial Officer	C-Suite Officer	106 Value: $2K
May 20, 2023 Sell	Common Stock F-InKind	Rabb Anthony Chief Financial Officer	C-Suite Officer	100 Value: $2K
May 20, 2023 Sell	Common Stock F-InKind	Rabb Anthony Chief Financial Officer	C-Suite Officer	100 Value: $2K

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 ESS TECH, INC.

ESS Tech, Inc., an energy storage company, designs and produces iron flow batteries for commercial and utility-scale energy storage applications worldwide. It offers energy storage products, which include Energy Warehouse, a behind-the-meter solution; and Energy Center, a front-of-the-meter solution. The company was founded in 2011 and is headquartered in Wilsonville, Oregon....

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