Stock Trading History of Ohlmacher Thomas M

The following table details the trading activities (stock purchases, stock sales, and stock option exercises) reported to the Securities and Exchange Commission (SEC) by insider Ohlmacher Thomas M since year 2005. The trader's CIK number is 1194294. At the time of this reporting, Ohlmacher Thomas M is the Pres & COO-Wholesale Business of Black Hills Corp /sd/ . (stock ticker symbol BKH). See this page for all insider trading activities at Black Hills Corp /sd/ .

Stock purchases, sales, and option exercises reported by insider *Ohlmacher Thomas M* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2008-02-27	BKH	Black Hills Corp /sd/	Sale	9,000	37.66	338,951
2007-05-10	BKH	Black Hills Corp /sd/	Sale	9,190	41.58	382,159
2007-05-10	BKH	Black Hills Corp /sd/	Option Exercise	9,190	35.10	322,569
2007-05-11	BKH	Black Hills Corp /sd/	Sale	2,000	41.85	83,692
2007-02-21	BKH	Black Hills Corp /sd/	Option Exercise	16,336	27.79	453,977
2007-02-21	BKH	Black Hills Corp /sd/	Sale	16,336	37.02	604,758
2005-09-16	BKH	Black Hills Corp /sd/	Sale	1,477	42.12	62,211

Insider trading activities including stock purchases, stock sales, and option exercises listed in the above table cannot be completely guaranteed as to their accuracy. For more information regarding the trades made by Ohlmacher Thomas M (Pres & COO-Wholesale Business of Black Hills Corp /sd/ at the time of this reporting) see the Securities and Exchange Commission (SEC) website.