Stephen Jumper

Currently holds a position at Dawson Geophysical Co

2.3

2.3

Position	Company	Period
Chairman of the Board, President, Chief Executive Officer	Dawson Geophysical Co	Feb. 15, 2016 -

• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Activity signal Earnings

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Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other

Notification date	Transaction date	Company	B/S Transaction type	Nb. shares Price Value	Number of shares	Price	Value	Details
2020-03-12	2020-03-10	Dawson Geophysical Co (DWSN)	B Purchase	13,640 -24.1% 290.95 US$1,102,262	13,640 -24.1%	290.95	US$1,102,262
2004-07-01	2004-06-30	Dawson Geophysical Co (DWSN)	S Sale	60,913 +9.3% 338.67 US$119,329	60,913 +9.3%	338.67	US$119,329