<PAGE>
PROSPECTUS SUPPLEMENT
(To Prospectus dated August 3, 1999)
1,000,000 Shares
(UNIT CORPORATION LOGO)
UNIT CORPORATION
Common Stock
-----------------------------------------------------------------
On September 6, 2000, Parker Drilling Company North America, Inc.
(the "Seller") sold to Lehman Brothers Inc. 1,000,000 shares of
our common stock. The shares were sold by the Seller at $15.00
per share. We will not receive any of the proceeds from the sale
of the shares by the Seller. On September 6, 2000, the last
reported sales price per share of our common stock was $15.88.
Amounts received by Lehman Brothers Inc. from sales of such
shares in excess of the price at which it purchased such shares
from the Seller may be deemed to be underwriting commissions
under the Securities Act of 1933. Lehman Brothers Inc. may resell
the shares in transactions on the open market or in negotiated
transactions, at market prices prevailing at the time of sale, at
prices related to such prevailing market prices or at negotiated
prices.
As a result of this sale, the Seller no longer holds any of the
shares acquired by it in connection with the Parker Acquisition
described under "Recent Developments and Selling Stockholder" in
the prospectus to which this supplement is attached.
Neither the Securities and Exchange Commission nor any state
securities commission has approved or disapproved of these
securities or determined if this prospectus supplement or the
accompanying prospectus is truthful or complete. Any
representation to the contrary is a criminal offense.
-----------------------------------------------------------------
Lehman Brothers
September 6, 2000
