INTERSTATE POWER CO

Written communication about a business combination transaction (Rule 425)

No description available

No description available

No description available

No description available

No description available

No description available

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Certification of termination of registration of a class of securities (Section 12(b))

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Notification of late filing of Form 10-K

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

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Definitive Proxy Statement

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Prospectus Supplement for Primary Offering

Post-effective amendment to a registration statement

General form for quarterly reports under Section 13 or 15(d)

No description available

Current report pursuant to Section 13 or 15(d)

No description available

General form for quarterly reports under Section 13 or 15(d) (amendment)

General form for quarterly reports under Section 13 or 15(d)

Current report pursuant to Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

Annual report pursuant to Section 13 or 15(d) (amendment)

Annual report pursuant to Section 13 or 15(d)

Beneficial ownership report for a holder of more than 5% (Schedule 13D)

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Beneficial ownership report for a holder of more than 5% (Schedule 13D)

Beneficial ownership report for a holder of more than 5% (Schedule 13D)

Beneficial ownership report for a holder of more than 5% (Schedule 13D)

Beneficial ownership report for a holder of more than 5% (Schedule 13D)

Beneficial ownership report for a holder of more than 5% (Schedule 13D)

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

Annual report pursuant to Section 13 or 15(d)

Definitive Proxy Statement

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

Current report pursuant to Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

Definitive Proxy Statement