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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1034755	Brigham Exploration Co	BEXP	Crude Petroleum & Natural Gas (1311)	752692967

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1238743	E Jeffrey Larson	6300 Bridge Point Parkway Bldg 2 Suite 500 Austin TX 78730	Executive V.p. Exploration	No	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock, Par Value $.01	Acquisiton	2010-04-22	20,000	$2.20	62,697	No	4	M	Direct
Common Stock, Par Value $.01	Disposition	2010-04-22	20,000	$17.51	42,697	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	M	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Incentive Stock Options	Disposition	2010-04-22	20,000	$2.20	20,000	$2.20

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
299,375	2010-04-22	2019-04-22	No	4	M	Direct

Footnotes

Exercise of employee stock option to purchase 20,000 shares of company stock pursuant to reporting person's existing 10b5-1 Trading Plan.
Sale of common stock acquired as a result of the exercise of an employee stock option pursuant to reporting person's existing 10b5-1 Trading Plan.
$17.5075 was the weighted average sale price for the transaction reported. The sales price ranged from a low of $17.4012 and a high of $17.65. Upon request, reporting person will provide to the SEC staff, the issuer or any security holder of the issuer full information regarding the number of shares sold at each separate price.