22 filings
DEF 14A
DWSN
Dawson Geophysical Co
Definitive proxy
18 Dec 13
12:00am
DEF 14A
DWSN
Dawson Geophysical Co
Definitive proxy
19 Dec 12
12:00am
DEF 14A
DWSN
Dawson Geophysical Co
Definitive proxy
16 Dec 11
12:00am
DEF 14A
DWSN
Dawson Geophysical Co
Definitive proxy
7 Dec 10
12:00am
DEF 14A
DWSN
Dawson Geophysical Co
Definitive proxy
15 Dec 09
12:00am
PRER14A
78vm5lta2it5
9 Dec 05
Preliminary revised proxy
12:00am
PRE 14A
ak1ilmhi3qtd0wt5
17 Nov 98
Preliminary proxy
12:00am