BLACK HILLS CORP /SD/ — Director's Dealing 2010

Apr 26, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: BLACK HILLS CORP /SD/ (BKH)
CIK: 0001130464
Period of Report: 2010-04-16

Reporting Person: OHLMACHER THOMAS M (PRES & COO NONREG ENERGY GROUP)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-04-16	Common Stock	S	51	$32.00	Disposed	50845.835	Direct
2010-04-22	Common Stock	S	164	$32.00	Disposed	50681.835	Direct
2010-04-23	Common Stock	S	3738	$32.00	Disposed	46943.835	Direct

Footnotes

F1: Shares sold in accordance with 10b5-1 Plan dated November 5, 2009.