ALLETE, Inc. Form 424B2: Prospectus (Rule 424(b)(2))
Filings on SEC EDGAR, newest first; amendments sit with their base form. Values are as filed.
- 2022-04-01: Form 424B2; Description 424B2; Document tm2210855-2_424b2.htm.
- 2020-05-06: Form 424B2; Description 424B2; Document a424b2-lampertprospectussu.htm.
- 2016-08-05: Form 424B2; Description 424B2; Document a424b2-lampertprospectussu.htm.
- 2015-02-25: Form 424B2; Description 424B2 LAMPERT PRO SUPP; Document a424b2-lampertprosupp02x25.htm.
| Filed | Form | Period of report | Description | Document |
|---|---|---|---|---|
| 2022-04-01 | 424B2 | 424B2 | tm2210855-2_424b2.htm | |
| 2020-05-06 | 424B2 | 424B2 | a424b2-lampertprospectussu.htm | |
| 2016-08-05 | 424B2 | 424B2 | a424b2-lampertprospectussu.htm | |
| 2015-02-25 | 424B2 | 424B2 LAMPERT PRO SUPP | a424b2-lampertprosupp02x25.htm | |
| 2014-05-09 | 424B2 | 424B2 | a424b2-pieprosupp05x09x14.htm | |
| 2014-02-27 | 424B2 | 424B2 | a2218599z424b2.htm | |
| 2014-02-18 | 424B2 | 424B2 | a424b2-pieprospsuppl02x18x.htm | |
| 2013-08-05 | 424B2 | 424B2 | a424b2-kcciprospectussuppl.htm | |
| 2012-08-03 | 424B2 | PROSPECTUS SUPPLEMENT | a424b2-kcciprospectussuppl.htm | |
| 2011-02-18 | 424B2 | PROSPECTUS SUPPLEMENT | exhibit424b2.htm | |
| 2009-02-27 | 424B2 | PROSPECTUS SUPPLEMENT | prospectus_supplement.htm | |
| 2008-02-19 | 424B2 | PROSPECTUS | prospectus.htm | |
| 1998-09-25 | 424B2 | PROSPECTUS SUPPLEMENT | ||
| 1997-11-19 | 424B2 | PROSPECTUS SUPPLEMENT | ||
| 1997-02-14 | 424B2 | PROSPECTUS SUPPLEMENT |