SOUTHWESTERN PUBLIC SERVICE CO
SEC Filing List

CIK: 0000092521
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Form Description Owner/Filer Filing Agent Date Actions
8-KCurrent report filingSouthwestern Public Service Co DONNELLEY FINANCIAL SOLUTIONS /FA/06/29/2026
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424B2Prospectus filed pursuant to Rule 424(b)(2)Southwestern Public Service Co DONNELLEY FINANCIAL SOLUTIONS /FA/06/25/2026
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FWPFiling under Securities Act Rules 163/43...Southwestern Public Service Co DONNELLEY FINANCIAL SOLUTIONS /FA/06/24/2026
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424B5Prospectus filed pursuant to Rule 424(b)(5)Southwestern Public Service Co DONNELLEY FINANCIAL SOLUTIONS /FA/06/24/2026
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8-KCurrent report filingXCEL ENERGY INC , SOUTHWESTERN PUBLIC SERVICE CO 06/23/2026
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8-KCurrent report filingXCEL ENERGY INC , SOUTHWESTERN PUBLIC SERVICE CO 05/05/2026
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10-QQuarterly report pursuant to Section 13 ...Southwestern Public Service Co 04/30/2026
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10-KAnnual report pursuant to Section 13 and...Southwestern Public Service Co 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 02/05/2026
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8-KCurrent report filingXCEL ENERGY INC , SOUTHWESTERN PUBLIC SERVICE CO 11/21/2025
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