{"schema":"rootz.ai/sec-company/v1","layer":3,"cik":"0001993004","name":"NorthWestern Energy Group, Inc.","filings":[{"form_type":"8-K","period_ending":"2026-04-02","filed_date":"2026-04-03","accession":"0001993004-26-000026","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300426000026/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"DEF 14A","period_ending":"2026-04-30","filed_date":"2026-03-12","accession":"0001993004-26-000018","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300426000018/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"8-K","period_ending":"2026-02-11","filed_date":"2026-02-17","accession":"0001993004-26-000010","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300426000010/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"10-K","period_ending":"2025-12-31","filed_date":"2026-02-12","accession":"0001993004-26-000006","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300426000006/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"8-K","period_ending":"2026-02-11","filed_date":"2026-02-12","accession":"0001993004-26-000008","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300426000008/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"8-K","period_ending":"2025-12-09","filed_date":"2025-12-09","accession":"0001993004-25-000203","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300425000203/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"8-K","period_ending":"2025-11-07","filed_date":"2025-11-13","accession":"0001993004-25-000196","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300425000196/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"8-K","period_ending":"2025-11-10","filed_date":"2025-11-10","accession":"0001993004-25-000192","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300425000192/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"8-K","period_ending":"2025-10-27","filed_date":"2025-10-31","accession":"0001993004-25-000190","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300425000190/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"10-Q","period_ending":"2025-09-30","filed_date":"2025-10-30","accession":"0001993004-25-000184","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300425000184/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"8-K","period_ending":"2025-10-29","filed_date":"2025-10-30","accession":"0001993004-25-000186","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300425000186/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"8-K","period_ending":"2025-09-29","filed_date":"2025-10-03","accession":"0001993004-25-000174","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300425000174/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"8-K","period_ending":"2025-09-03","filed_date":"2025-09-03","accession":"0001993004-25-000166","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300425000166/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"8-K","period_ending":"2025-08-18","filed_date":"2025-08-19","accession":"0001993004-25-000143","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300425000143/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"8-K","period_ending":"2025-08-19","filed_date":"2025-08-19","accession":"0001993004-25-000130","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300425000130/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"10-Q","period_ending":"2025-06-30","filed_date":"2025-07-31","accession":"0001993004-25-000121","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300425000121/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"8-K","period_ending":"2025-07-30","filed_date":"2025-07-31","accession":"0001993004-25-000122","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300425000122/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"8-K","period_ending":"2025-06-05","filed_date":"2025-06-05","accession":"0001993004-25-000105","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300425000105/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"8-K","period_ending":"2025-05-28","filed_date":"2025-05-28","accession":"0001993004-25-000102","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300425000102/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"8-K","period_ending":"2025-05-19","filed_date":"2025-05-19","accession":"0001993004-25-000098","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300425000098/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"8-K","period_ending":"2025-05-01","filed_date":"2025-05-07","accession":"0001993004-25-000096","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300425000096/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"8-K","period_ending":"2025-04-30","filed_date":"2025-05-05","accession":"0001993004-25-000090","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300425000090/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"10-Q","period_ending":"2025-03-31","filed_date":"2025-04-30","accession":"0001993004-25-000084","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300425000084/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"8-K","period_ending":"2025-04-29","filed_date":"2025-04-30","accession":"0001993004-25-000086","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300425000086/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"8-K","period_ending":"2025-04-10","filed_date":"2025-04-10","accession":"0001993004-25-000081","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300425000081/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"8-K","period_ending":"2025-03-21","filed_date":"2025-03-27","accession":"0001993004-25-000067","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300425000067/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"8-K","period_ending":"2025-03-25","filed_date":"2025-03-25","accession":"0001993004-25-000065","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300425000065/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"DEF 14A","period_ending":"2025-04-30","filed_date":"2025-03-12","accession":"0001993004-25-000060","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300425000060/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"10-K","period_ending":"2024-12-31","filed_date":"2025-02-13","accession":"0001993004-25-000021","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300425000021/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"8-K","period_ending":"2025-02-12","filed_date":"2025-02-13","accession":"0001993004-25-000023","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300425000023/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"8-K","period_ending":"2024-12-12","filed_date":"2024-12-19","accession":"0001993004-24-000120","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300424000120/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"8-K","period_ending":"2024-11-20","filed_date":"2024-11-21","accession":"0001993004-24-000110","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300424000110/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"8-K","period_ending":"2024-11-08","filed_date":"2024-11-08","accession":"0001993004-24-000108","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300424000108/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"8-K","period_ending":"2024-10-28","filed_date":"2024-10-30","accession":"0001993004-24-000104","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300424000104/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"10-Q","period_ending":"2024-09-30","filed_date":"2024-10-29","accession":"0001993004-24-000102","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300424000102/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"8-K","period_ending":"2024-09-04","filed_date":"2024-09-04","accession":"0001993004-24-000084","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300424000084/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"8-K","period_ending":"2024-08-07","filed_date":"2024-08-09","accession":"0001993004-24-000081","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300424000081/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"8-K","period_ending":"2024-07-30","filed_date":"2024-08-02","accession":"0001993004-24-000075","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300424000075/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"10-Q","period_ending":"2024-06-30","filed_date":"2024-07-31","accession":"0001993004-24-000072","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300424000072/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"8-K","period_ending":"2024-07-30","filed_date":"2024-07-31","accession":"0001993004-24-000073","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300424000073/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"8-K","period_ending":"2024-07-15","filed_date":"2024-07-15","accession":"0001993004-24-000066","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300424000066/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"8-K","period_ending":"2024-06-03","filed_date":"2024-06-03","accession":"0001993004-24-000050","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300424000050/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"8-K","period_ending":"2024-05-20","filed_date":"2024-05-20","accession":"0001993004-24-000048","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300424000048/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"8-K","period_ending":"2024-04-26","filed_date":"2024-05-02","accession":"0001993004-24-000039","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300424000039/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"10-Q","period_ending":"2024-03-31","filed_date":"2024-04-26","accession":"0001993004-24-000035","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300424000035/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"8-K","period_ending":"2024-04-25","filed_date":"2024-04-26","accession":"0001993004-24-000037","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300424000037/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"8-K","period_ending":"2024-04-12","filed_date":"2024-04-18","accession":"0001993004-24-000031","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300424000031/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"8-K","period_ending":"2024-03-28","filed_date":"2024-04-03","accession":"0001993004-24-000028","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300424000028/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"8-K","period_ending":"2024-03-21","filed_date":"2024-03-21","accession":"0001993004-24-000026","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300424000026/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"DEF 14A","period_ending":"2024-04-26","filed_date":"2024-03-06","accession":"0001993004-24-000020","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300424000020/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"8-K","period_ending":"2024-03-05","filed_date":"2024-03-05","accession":"0001993004-24-000013","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300424000013/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"8-K","period_ending":"2024-02-14","filed_date":"2024-02-20","accession":"0001993004-24-000010","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300424000010/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"10-K","period_ending":"2023-12-31","filed_date":"2024-02-15","accession":"0001993004-24-000006","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300424000006/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"8-K","period_ending":"2024-02-14","filed_date":"2024-02-15","accession":"0001993004-24-000008","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300424000008/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"8-K","period_ending":"2023-12-27","filed_date":"2024-01-02","accession":"0001993004-24-000002","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300424000002/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"8-K","period_ending":"2023-12-20","filed_date":"2023-12-27","accession":"0001993004-23-000016","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300423000016/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"8-K","period_ending":"2023-12-06","filed_date":"2023-12-06","accession":"0001993004-23-000014","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300423000014/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"8-K","period_ending":"2023-11-29","filed_date":"2023-12-05","accession":"0001993004-23-000012","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300423000012/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"8-K","period_ending":"2023-11-12","filed_date":"2023-11-13","accession":"0001993004-23-000010","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300423000010/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"10-Q","period_ending":"2023-09-30","filed_date":"2023-10-27","accession":"0001993004-23-000006","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300423000006/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]},{"form_type":"8-K","period_ending":"2023-10-26","filed_date":"2023-10-27","accession":"0001993004-23-000008","edgar_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300423000008/","pem_signed":true,"extraction_status":"pending","sections_extracted":[]}],"edgar_company_page":"https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001993004&type=&dateb=&owner=exclude&count=100","provenance":{"source":"sec.gov/edgar","note":"All filings are PEM-signed by SEC. Accession numbers are permanent identifiers."}}