ALLETE has entered an agreement to be acquired by a partnership led by Canada Pension Plan Investment Board and Global Infrastructure Partners and start the process to become a private company. Learn more at www.ALLETEforward.com.

SEC Filings

Filing date Form Description View
424B5

Form of prospectus disclosing information, facts, events covered in both forms 424B2, 424B3

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8-K

Report of unscheduled material events or corporate event

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8-K

Report of unscheduled material events or corporate event

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424B5

Form of prospectus disclosing information, facts, events covered in both forms 424B2, 424B3

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305B2

Initial statement filed pursuant to the Trust Indenture Act

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POS AM

Post-effective amendment to an S-Type filing

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8-K

Report of unscheduled material events or corporate event

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10-Q

Quarterly report which provides a continuing view of a company's financial position

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S-3

Simplified registration form

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8-K

Report of unscheduled material events or corporate event

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