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
8-K

Report of unscheduled material events or corporate event

View HTML
S-8

Securities offered to employees pursuant to employee benefit plans

View HTML
S-8

Securities offered to employees pursuant to employee benefit plans

View HTML
424B3

Form of prospectus reflecting facts events constituting substantive change from last form

View HTML
10-Q/A

Amendment to a previously filed 10-Q

View HTML
10-Q/A

Amendment to a previously filed 10-Q

View HTML
8-K/A

Amendment to a previously filed 8-K

View HTML
424B3

Form of prospectus reflecting facts events constituting substantive change from last form

View HTML
424B3

Form of prospectus reflecting facts events constituting substantive change from last form

View HTML
424B3

Form of prospectus reflecting facts events constituting substantive change from last form

View HTML