{"ein":"301133956","kind":"company","verification":"filing-verified","name":"MDU RESOURCES GROUP INC","tickers":["MDU"],"exchanges":["NYSE"],"sicDescription":"Mining & Quarrying of  Nonmetallic Minerals (No Fuels)","city":"BISMARCK","state":"ND","stateOfIncorporation":"","cik":"0000067716","sourceName":"SEC EDGAR company submissions record","sourceUrl":"https://data.sec.gov/submissions/CIK0000067716.json","lastChecked":"2026-07-05"}