# EDGAR Filing Document

**Accession Number:** 0000066756
**File Stem:** 0001140361-25-046705
**Filing Date:** 2025-12
**Character Count:** 3016
**Document Hash:** 38261b7e92640abba25e9acecfb490df
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001140361-25-046705.hdr.sgml**: 20251229

**ACCESSION NUMBER**: 0001140361-25-046705

**CONFORMED SUBMISSION TYPE**: 15-12G

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20251229

**DATE AS OF CHANGE**: 20251229

**EFFECTIVENESS DATE**: 20251229

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** ALLETE INC
- **CENTRAL INDEX KEY:** 0000066756
- **STANDARD INDUSTRIAL CLASSIFICATION:** ELECTRIC & OTHER SERVICES COMBINED [4931]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 410418150
- **STATE OF INCORPORATION:** MN
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 15-12G
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-03548
- **FILM NUMBER:** 251604856

**BUSINESS ADDRESS:**
- **STREET 1:** 30 W SUPERIOR ST
- **CITY:** DULUTH
- **STATE:** MN
- **ZIP:** 55802-2093
- **BUSINESS PHONE:** 2182795000

**MAIL ADDRESS:**
- **STREET 1:** 30 W SUPERIOR STREET
- **CITY:** DULUTH
- **STATE:** MN
- **ZIP:** 55802-2093

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** ALLETE
- **DATE OF NAME CHANGE:** 20000901

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MINNESOTA POWER INC
- **DATE OF NAME CHANGE:** 19980603

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MINNESOTA POWER & LIGHT CO
- **DATE OF NAME CHANGE:** 19920703

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

### FORM 15

#### CERTIFICATION AND NOTICE OF TERMINATION OF REGISTRATION

#### UNDER SECTION 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934

#### OR SUSPENSION OF DUTY TO FILE REPORTS UNDER SECTIONS 13 AND 15(d)

#### OF THE SECURITIES EXCHANGE ACT OF 1934.

#### Commission File Number 1-3548

## ALLETE, Inc.
(Exact name of registrant as specified in its charter)

#### 30 West Superior Street

#### Duluth, Minnesota 55802-2093
(218) 279-5000

(Address, including zip code, and telephone number, including area code, of registrant's principal executive offices)

#### Common Stock, without par value
(Title of each class of securities covered by this Form)

#### None
(Titles of all other classes of securities for which a duty to file reports under section 13(a) or 15(d) remains)

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Please place an X in the box(es) to designate the appropriate rule provision(s) relied upon to terminate or suspend the duty to file reports:

Rule 12g-4(a)(1)<br> ☒

Rule 12g-4(a)(2) ☐

Rule 12h-3(b)(1)(i)<br> ☒

Rule 12h-3(b)(1)(ii) ☐

Rule 15d-6 ☐

Rule 15d-22(b) ☐

Approximate number of holders of record as of the certification or notice date: One.

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Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, ALLETE, Inc. has caused this certification/notice to be signed on its behalf by the undersigned duly authorized person.

---

| | | |
|:---|:---|:---|
| **ALLETE, Inc.** | **ALLETE, Inc.** | **ALLETE, Inc.** |
|  | By | /s/ Julie L. Padilla |
|  |  | &nbsp;&nbsp;&nbsp; Julie L. Padilla |
|  |  | Vice President, Chief Legal Officer |
|  |  | and Corporate Secretary |

---

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