# EDGAR Filing Document

**Accession Number:** 0000066756
**File Stem:** 0001140361-25-045691
**Filing Date:** 2025-12
**Character Count:** 9052
**Document Hash:** 12604ce4ff2a11f7fe8199397efbc49e
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001140361-25-045691.hdr.sgml**: 20251216

**ACCESSION NUMBER**: 0001140361-25-045691

**CONFORMED SUBMISSION TYPE**: S-8 POS

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20251216

**DATE AS OF CHANGE**: 20251216

**EFFECTIVENESS DATE**: 20251216

**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:** S-8 POS
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-207846
- **FILM NUMBER:** 251576223

**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

#### As filed with the Securities and Exchange Commission on December 16, 2025

#### Registration Statement No. 333-265211

#### Registration Statement No. 333-253190

#### Registration Statement No. 333-228120

#### Registration Statement No. 333-207846

#### Registration Statement No. 333-190336

#### Registration Statement No. 333-183051

#### Registration Statement No. 333-162890

------

**UNITED STATES<br> SECURITIES AND EXCHANGE COMMISSION<br> Washington, D.C. 20549**

#### POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-8 REGISTRATION STATEMENT NO. 333-265211

#### POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-8 REGISTRATION STATEMENT NO. 333-253190

#### POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-8 REGISTRATION STATEMENT NO. 333-228120

#### POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-8 REGISTRATION STATEMENT NO. 333-207846

#### POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-8 REGISTRATION STATEMENT NO. 333-190336

#### POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-8 REGISTRATION STATEMENT NO. 333-183051

#### POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-8 REGISTRATION STATEMENT NO. 333-162890
UNDER THE SECURITIES ACT OF 1933

---

| | | |
|:---|:---|:---|
| **ALLETE, Inc.** | **Minnesota** | **41-0418150** |
| (Exact name of registrant as specified in its<br> charter) | (State or other jurisdiction of incorporation or<br> organization) | (I.R.S. Employer Identification No.) |

---

#### 30 West Superior Street<br> Duluth, Minnesota 55802-2093<br> (218) 279-5000
(Address, including zip code, and telephone number, including area code, of registrant's principal executive offices)

#### ALLETE Non-Employee Director Stock Plan (2022)

#### ALLETE and Affiliated Companies Retirement Savings and Stock Ownership Plan (2021)

#### ALLETE Executive Long-Term Incentive Compensation Plan (2018)

#### ALLETE Executive Long-Term Incentive Compensation Plan (2015)

#### ALLETE Non-Employee Director Stock Plan (2013)

#### ALLETE and Affiliated Companies Employee Stock Purchase Plan (2012)

#### Minnesota Power and Affiliated Companies Retirement Savings and Stock Ownership Plan (2009)
(Full Title of Plans)

#### JULIE L. PADILLA, ESQ.

#### Vice President, Chief Legal Officer

#### and Corporate Secretary

#### 30 West Superior Street

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

(Name and address, including zip code, and telephone number, including area code, of agent for service)

------

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company" and "emerging growth company" in Rule 12b-2 of the Securities Exchange Act of 1934.

Large accelerated filer ☒ Accelerated filer☐ <br>Non-accelerated filer ☐ Smaller reporting company ☐

<br> Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of the Securities Act of 1933.☐

------

#### EXPLANATORY NOTE
These Post-Effective Amendments (each, a "Post-Effective Amendment" and collectively, the "Post-Effective Amendments") relate to the following registration statements filed by ALLETE, Inc. (the "Company") with the Securities and Exchange Commission (the "Commission") on Form S-8 (each, as amended, a "Registration Statement" and collectively, the "Registration Statements"):

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Registration Statement No. 333-265211, filed with the Commission on May 25, 2022, relating to the registration of the securities described in such Registration Statement under the ALLETE Non-Employee Director
 Stock Plan.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Registration Statement No. 333-253190, filed with the Commission on February 17, 2021, relating to the registration of the securities described in such Registration Statement under the ALLETE and Affiliated
 Companies Retirement Savings and Stock Ownership Plan.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Registration Statement No. 333-228120, filed with the Commission on November 1, 2018, relating to the registration of the securities described in such Registration Statement under the ALLETE Executive
 Long-term Incentive Compensation Plan.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Registration Statement No. 333-207846, filed with the Commission on November 6, 2015, relating to the registration of the securities described in such Registration Statement under the ALLETE Executive
 Long-term Incentive Compensation Plan.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Registration Statement No. 333-190336, filed with the Commission on August 2, 2013, relating to the registration of the securities described in such Registration Statement under the ALLETE Non-Employee
 Director Stock Plan.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Registration Statement No. 333-183051, filed with the Commission on August 3, 2012, relating to the registration of the securities described in such Registration Statement under the ALLETE and Affiliated
 Companies Employee Stock Purchase Plan.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Registration Statement No. 333-162890, filed with the Commission on November 5, 2009, relating to the registration of the securities described in such Registration Statement under the Minnesota Power and
 Affiliated Companies Retirement Savings and Stock Ownership Plan.

On December 15, 2025, pursuant to the terms of the Plan of Merger, dated as of May 5, 2024, by and among the Company, Alloy Parent LLC, a Delaware limited liability company ("Parent"), and Alloy Merger Sub LLC, a Delaware limited liability company and wholly owned subsidiary of Parent ("Merger Sub"), Merger Sub merged with and into the Company (the "Merger"), with the Company continuing as the surviving corporation in the Merger and becoming a subsidiary of Parent.

As a result of the Merger, any and all offerings of securities registered pursuant to the Registration Statements have been terminated. In accordance with undertakings made by the Company in each Registration Statement to remove from registration, by means of a post-effective amendment, any of the securities registered under such Registration Statement that remain unsold at the termination of the offering, the Company hereby removes from registration any and all securities that remain unsold under each Registration Statement as of the date hereof.

------

#### SIGNATURES
Pursuant to the requirements of the Securities Act of 1933, as amended, the Company certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and has duly caused these Post-Effective Amendments to the Registration Statements described above to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Duluth, State of Minnesota, on the 16<sup>th</sup> day of December, 2025.

---

| | | |
|:---|:---|:---|
| **ALLETE, Inc.** | **ALLETE, Inc.** | **ALLETE, Inc.** |
|  | By | /s/ Julie L. Padilla |
|  |  | Julie L. Padilla |
|  |  | Vice President, Chief Legal Officer <br>and Corporate Secretary<br>|

---

No other person is required to sign these Post-Effective Amendments to the Registration Statements in reliance upon Rule 478 under the Securities Act of 1933, as amended.

------