{"transactions":[{"id":761469,"issuer":{"id":5058,"kind":"organization","name":"Koppers Holdings Inc.","symbol":"KOP"},"owners":[{"id":43773,"kind":"person","name":"Brenner Eric D.","position":1,"cik":"0002136316","reported_name":"Brenner Eric D.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CFO and Treasurer"}}],"security":"Common  Stock","published_at":"2026-05-27T20:08:30.000Z","date":"2026-05-26","kind":"grant","planned":false,"acquired":true,"shares":6620,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"The reporting person was awarded time-based restricted stock units on May 26, 2026, which will vest in four annual installments of 25 percent beginning January 5, 2027."}],"balance_after":6620,"source":{"system":"sec-edgar","filing":"0002136316-26-000004","document":"wk-form4_1779912507.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1315257/000213631626000004/wk-form4_1779912507.xml","form_type":"4"}}]}