NORTHERN STATES POWER CO /WI/
SEC Filing List

CIK: 0000072909
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FormDescriptionOwner/FilerFiling AgentDateActions
10-QQuarterly report pursuant to Section 13 ...Northern States Power Co /wi/ 04/30/2026
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10-KAnnual report pursuant to Section 13 and...Northern States Power Co /wi/ 02/25/2026
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8-KCurrent report filingXCEL ENERGY INC , NORTHERN STATES POWER CO /WI/ , PUBLIC SERVICE CO OF COLORADO , SOUTHWESTERN PUBLIC SERVICE CO , NORTHERN STATES POWER CO Xcel Energy Inc /fa02/05/2026
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8-KCurrent report filingXCEL ENERGY INC , NORTHERN STATES POWER CO /WI/ Xcel Energy Inc /fa11/07/2025
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10-QQuarterly report pursuant to Section 13 ...Northern States Power Co /wi/ Northern States Power Co /wi/ /fa10/30/2025
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8-KCurrent report filingXCEL ENERGY INC , NORTHERN STATES POWER CO /WI/ , SOUTHWESTERN PUBLIC SERVICE CO , NORTHERN STATES POWER CO Xcel Energy Inc /fa10/30/2025
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8-KCurrent report filingXCEL ENERGY INC , NORTHERN STATES POWER CO /WI/ Xcel Energy Inc /fa08/11/2025
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8-KCurrent report filingXCEL ENERGY INC , NORTHERN STATES POWER CO /WI/ , SOUTHWESTERN PUBLIC SERVICE CO , NORTHERN STATES POWER CO Xcel Energy Inc /fa07/31/2025
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10-QQuarterly report pursuant to Section 13 ...Northern States Power Co /wi/ Northern States Power Co /wi/ /fa07/31/2025
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8-KCurrent report filingNorthern States Power Co /wi/ Donnelley Financial Solutions /fa/06/23/2025
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