NELSON ALAN MARK 4
4 · DAWSON GEOPHYSICAL CO · Filed May 8, 2012
Insider Transaction Report
Form 4
NELSON ALAN MARK
Vice President
Transactions
- Sale
Dawson Geophysical Company-Common Stock $0.33 1/3 par value
2012-05-07$26.23/sh−1,000$26,226→ 8,516 total