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EXHIBIT A
TRANSACTIONS IN THE COMMON STOCK BY PEBBLETON
With respect to the transactions set forth below, all purchases were
made by Pebbleton Corporation N.V. and were effected on The Nasdaq Stock Market,
Inc., the exchange on which the shares of Common Stock of Dawson Geophysical
Company are traded during the 60 days prior to the filing of this Amendment
No. 9.
<TABLE>
<CAPTION>
DATE OF NUMBER OF SHARES PRICE PER SHARE
PURCHASE PURCHASED ($)
<S> <C> <C>
11/07/00 15,000 9.12500
11/08/00 5,000 9.50000
11/09/00 17,000 9.50000
11/13/00 5,000 9.46875
11/13/00 10,000 9.50000
</TABLE>
A-1