Dawson Geophysical Company

Filing date	Form	Description	Filing Group	View
10/06/05	POS EX	POS EX	Registration Statements	0001104659-05-047566.rtf View HTML 0001104659-05-047566.xls 0001104659-05-047566.pdf
12/06/05	PRE 14A	A preliminary proxy statement providing notification matters to be brought to a vote	Proxy Filings	0000950134-05-022706.rtf View HTML 0000950134-05-022706.xls 0000950134-05-022706.pdf
11/17/98	PRE 14A	A preliminary proxy statement providing notification matters to be brought to a vote	Proxy Filings	0000950134-98-009110.rtf View HTML 0000950134-98-009110.xls 0000950134-98-009110.pdf
04/25/03	PRE 14A	A preliminary proxy statement providing notification matters to be brought to a vote	Proxy Filings	0000929966-03-000010.rtf View HTML 0000929966-03-000010.xls 0000929966-03-000010.pdf
04/19/13	PRE 14A	A preliminary proxy statement providing notification matters to be brought to a vote	Proxy Filings	0001104659-13-030941.rtf View HTML 0001104659-13-030941.xls 0001104659-13-030941.pdf
06/29/23	PRE 14A	A preliminary proxy statement providing notification matters to be brought to a vote	Proxy Filings	0001104659-23-076374.rtf View HTML 0001104659-23-076374.xls 0001104659-23-076374.pdf
10/27/23	PRE 14A	A preliminary proxy statement providing notification matters to be brought to a vote	Proxy Filings	0001104659-23-112229.rtf View HTML 0001104659-23-112229.xls 0001104659-23-112229.pdf
09/03/98	PREM14A	A preliminary proxy statement relating to a merger or acquisition	Mergers & Acquisitions	0000929966-98-000013.rtf View HTML 0000929966-98-000013.xls 0000929966-98-000013.pdf
11/23/21	PREM14A	A preliminary proxy statement relating to a merger or acquisition	Mergers & Acquisitions	0001104659-21-143098.rtf View HTML 0001104659-21-143098.xls 0001104659-21-143098.pdf
12/09/05	PRER14A	Proxy soliciting materials. Revised preliminary material	Proxy Filings	0000950134-05-022893.rtf View HTML 0000950134-05-022893.xls 0000950134-05-022893.pdf

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Dawson Geophysical Company

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