{"transactions":[{"id":745740,"issuer":{"id":7856,"kind":"organization","name":"ESS Tech, Inc."},"owners":[{"id":40358,"kind":"person","name":"Buckley Drew P","position":1,"cik":"0002106707","reported_name":"Buckley Drew P","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO"}}],"security":"Common Stock","published_at":"2026-06-08T21:40:47.000Z","date":"2026-06-04","kind":"purchase","planned":false,"acquired":true,"shares":25000,"price":1.0264,"value":25660.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $1.0073 to $1.0299, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price."}],"balance_after":25000,"source":{"system":"sec-edgar","filing":"0002106707-26-000006","document":"form4-06082026_090642.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1819438/000210670726000006/form4-06082026_090642.xml","form_type":"4"}},{"id":927652,"issuer":{"id":7856,"kind":"organization","name":"ESS Tech, Inc."},"owners":[{"id":40358,"kind":"person","name":"Buckley Drew P","position":1,"cik":"0002106707","reported_name":"Buckley Drew P","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO"}}],"security":"Stock Option (right to buy)","published_at":"2026-01-29T22:25:27.000Z","date":"2026-01-28","kind":"grant","planned":false,"acquired":true,"shares":550000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"25 % of the shares subject to the option will vest on February 20, 2027 and 1/16th of the shares subject to the option shall vest quarterly thereafter, subject to the Reporting Person remains as Service Provider to the issuer through each such vest date."}],"balance_after":550000,"derivative":{"exercise_price":1.68,"expiration_date":"2036-01-28","underlying":"Common Stock","underlying_shares":550000},"source":{"system":"sec-edgar","filing":"0002106707-26-000004","document":"wk-form4_1769725525.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1819438/000210670726000004/wk-form4_1769725525.xml","form_type":"4"}}]}