ALLETE INC — Director's Dealing 2010

May 6, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ALLETE INC (ALE)
CIK: 0000066756
Period of Report: 2010-05-05

Reporting Person: AMBERG DEBORAH A (SrVP, Gen. Counsel & Secretary)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-05-05	Common Stock	M	1360	$27.40	Acquired	5557.84	Direct
2010-05-05	Common Stock	S	1360	$37.25	Disposed	4197.84	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-05-05	Employee Stock Option (Right to Buy)	$27.40	M	1360	Disposed	2011-01-02	Common Stock (1360)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	7515.64	Indirect

Footnotes

F1: Includes shares acquired in exempt transactions under the dividend reinvestment feature of ALLETE's stock purchase and dividend reinvestment plan and pursuant to the dividend equivalent feature of a restricted stock grant under ALLETE's executive long-term incentive compensation plan, and is based on plan information available as of April 30, 2010

F2: Includes shares acquired in exempt transactions under ALLETE's retirement savings and stock ownership plan (RSOP) and is based on RSOP plan information available as of April 30, 2010.

F3: 50% was exercisable on January 2, 2002 and 50% was exercisable on January 2, 2003.