Dubberstein Mark - Insider Stock Trading

Filing Date	T Date	Ticker	Issuer	Inc	Sector	Ind	Industry	Owner	oSt	Rel	Title	T	TVal	Price	Qty	oc	Own	H
3/15/11 16:31	3/14/11	BRNC	Bronco Drilling Company, Inc.	DE	Energy	OilDrl	Drilling Oil & Gas Wells	Dubberstein Mark	OK	O	P	S	-123	10.11	-12	-4	290	D
3/11/11 16:51	3/9/11	BRNC	Bronco Drilling Company, Inc.	DE	Energy	OilDrl	Drilling Oil & Gas Wells	Dubberstein Mark	OK	O	P	S.m	-271	10.18	-27	-8	302	D
2/18/11 16:36	2/17/11	BRNC	Bronco Drilling Company, Inc.	DE	Energy	OilDrl	Drilling Oil & Gas Wells	Dubberstein Mark	OK	O	P	S	-245	8.15	-30	-8	369	D
1/14/11 16:37	1/13/11	BRNC	Bronco Drilling Company, Inc.	DE	Energy	OilDrl	Drilling Oil & Gas Wells	Dubberstein Mark	OK	O	P	S	-133	6.64	-20	-5	399	D
10/19/10 16:36	10/15/10	BRNC	Bronco Drilling Company, Inc.	DE	Energy	OilDrl	Drilling Oil & Gas Wells	Dubberstein Mark	OK	O	P	S	-11	4.50	-2	-1	316	D
10/15/10 16:29	10/13/10	BRNC	Bronco Drilling Company, Inc.	DE	Energy	OilDrl	Drilling Oil & Gas Wells	Dubberstein Mark	OK	O	P	S.m	-52	4.51	-12	-4	319	D
6/22/10 17:02	6/21/10	BRNC	Bronco Drilling Company, Inc.	DE	Energy	OilDrl	Drilling Oil & Gas Wells	Dubberstein Mark	OK	O	P	S	-81	4.51	-18	-5	330	D
6/16/10 16:23	6/15/10	BRNC	Bronco Drilling Company, Inc.	DE	Energy	OilDrl	Drilling Oil & Gas Wells	Dubberstein Mark	OK	O	P	S	-60	4.00	-15	-4	348	D
5/14/10 16:12	5/12/10	BRNC	Bronco Drilling Company, Inc.	DE	Energy	OilDrl	Drilling Oil & Gas Wells	Dubberstein Mark	OK	O	P	S.m	-66	4.43	-15	-4	363	D
3/1/10 16:23	2/25/10	BRNC	Bronco Drilling Company, Inc.	DE	Energy	OilDrl	Drilling Oil & Gas Wells	Dubberstein Mark	OK	O	P	S.m	-198	4.95	-40	-45	48	D
1/5/10 16:37	1/4/10	BRNC	Bronco Drilling Company, Inc.	DE	Energy	OilDrl	Drilling Oil & Gas Wells	Dubberstein Mark	OK	O	P	S	-43	5.12	-8	-9	88	D
3/23/09 17:27	3/19/09	BRNC	Bronco Drilling Company, Inc.	DE	Energy	OilDrl	Drilling Oil & Gas Wells	Dubberstein Mark	OK	O	P	S	-176	5.87	-30	-24	96
2/27/09 16:33	2/25/09	BRNC	Bronco Drilling Company, Inc.	DE	Energy	OilDrl	Drilling Oil & Gas Wells	Dubberstein Mark	OK	O	P	S	-33	4.94	-7	-5	126
1/7/09 17:01	1/5/09	BRNC	Bronco Drilling Company, Inc.	DE	Energy	OilDrl	Drilling Oil & Gas Wells	Dubberstein Mark	OK	O	P	S	-47	6.04	-8	-11	62
1/6/09 17:29	1/2/09	BRNC	Bronco Drilling Company, Inc.	DE	Energy	OilDrl	Drilling Oil & Gas Wells	Dubberstein Mark	OK	O	P	S	-34	6.25	-5	-7	70
4/11/08 21:20	4/11/08	BRNC	Bronco Drilling Company, Inc.	DE	Energy	OilDrl	Drilling Oil & Gas Wells	Dubberstein Mark	OK	O	P	S	-41	16.34	-3	-3	75	D
4/9/08 17:49	4/8/08	BRNC	Bronco Drilling Company, Inc.	DE	Energy	OilDrl	Drilling Oil & Gas Wells	Dubberstein Mark	OK	O	P	S	-122	16.21	-8	-9	78	D
1/4/08 17:02	1/2/08	BRNC	Bronco Drilling Company, Inc.	DE	Energy	OilDrl	Drilling Oil & Gas Wells	Dubberstein Mark	OK	O	P	S	-111	14.91	-7	-10	68	D
1/4/08 17:01	1/2/08	BRNC	Bronco Drilling Company, Inc.	DE	Energy	OilDrl	Drilling Oil & Gas Wells	Dubberstein Mark	OK	O	P	S.m	-93	15.17	-6	-9	61	D
1/4/08 17:01	1/3/08	BRNC	Bronco Drilling Company, Inc.	DE	Energy	OilDrl	Drilling Oil & Gas Wells	Dubberstein Mark	OK	O	P	S.m	-148	15.14	-10	-16	52	D

D	Derivative transaction in filing (usually option exercise)
M	Multiple transactions in filing; earliest reported transaction date and weighted average transaction price
A	Amended filing
E	Error detected in filing

S - Sale	Sale of securities on an exchange or to another person
S - Sale+OE	Sale of securities on an exchange or to another person (after option exercise)
F - Tax	Payment of exercise price or tax liability using portion of securities received from the company
P - Purchase	Purchase of securities on an exchange or from another person

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