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
S-3

Simplified registration form

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10-K405

Annual report. The Regulation S-K Item 405 box on the cover page is checked

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DEF 14A

Official notification to shareholders of matters to be brought to a vote ("Proxy")

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424B4

Form of prospectus disclosing information facts events covered in both forms 424B1 424B3

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S-3/A

Pre-effective amendment to an S-3 filing

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8-K

Report of unscheduled material events or corporate event

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S-3/A

Pre-effective amendment to an S-3 filing

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U-3A-2

Statement by holding company claiming exemption from provisions of the act under Rule 2

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8-K

Report of unscheduled material events or corporate event

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S-3

Simplified registration form

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