GWH insider trading
NYSE IndustrialsESS Tech, Inc.: insider trade history from SEC Form 4 filings.
About ESS Tech, Inc.
ESS Tech, Inc., an energy storage company, engages in the design and production of 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 the gigawatt-hour energy base storage product, a fully configurable layout that integrates with any site location and that allows the power to be decoupled from the capacity. The company was founded in 2011 and is headquartered in Wilsonville, Oregon.
Company website: essinc.com
GWH insider activity at a glance
FilingIQ tracks 156 insider transactions for GWH in filings since Oct 13, 2021. The most recent transaction is dated Aug 21, 2026.
Across the full history, 22 open-market purchases
and 29 open-market sales
were filed under transaction codes P and S respectively. Compensatory share awards
(code A) and option exercises (code M) are tracked separately and not counted here.
The average FilingIQ composite score on GWH insider trades is 59.1/100, produced by FilingIQ's multi-factor Form 4 model. Model framework documented at methodology.
Latest GWH Form 4 filings
Most recent disclosures. Sign up to filter by score, transaction code, or insider role.
Other Industrials tickers with recent insider activity
Frequently asked
- How many insider trades does FilingIQ track for GWH?
- FilingIQ tracks 156 Form 4 insider transactions for GWH (ESS Tech, Inc.), covering filings from Oct 13, 2021 onwards. 2 of those are dated within the last 90 days.
- Are GWH insiders net buyers or net sellers?
- Across the full Form 4 history for GWH, 22 transactions (14%) were open-market purchases and 29 (19%) were open-market sales. Compensatory awards and option exercises are filtered out of these counts.
- Where does GWH insider data come from?
- Every transaction shown on this page is sourced directly from SEC EDGAR Form 4 filings. FilingIQ normalises insider identity across reporting variations and scores discretionary open-market purchases and sales on its multi-factor composite model.
- What sector is GWH in?
- ESS Tech, Inc. (GWH) is classified in the Industrials sector, specifically Electrical Equipment & Parts, with a current market capitalisation of $38.31M.
Methodology & sources
Every GWH insider transaction shown on FilingIQ is parsed directly from a public SEC Form 4 XML filing. Insider identity is normalised across reporting variants (CIK changes, name spellings, related-party indirect holdings). The FilingIQ composite score is documented in full on the team page and algo disclosure. Not investment advice; see disclaimer.