<PAGE>
File No. 333-44677
Rule 424(b)(3)
PROSPECTUS SUPPLEMENT
TO
PROSPECTUS DATED FEBRUARY 6, 1998
KEY ENERGY SERVICES, INC.
100,000 SHARES
COMMON STOCK
Nabors Acquisition Corp. IV (the "Selling Shareholder") is hereby
offering for resale one hundred thousand (100,000) shares of Common Stock
(the "Shares") of Key Energy Services, Inc., a Maryland corporation (the
"Company"). Forty-two thousand (42,000) Shares are being offered at $10.75
per share, eight thousand (8,000) Shares are being offered at $10.875 per
share, twenty-five thousand (25,000) Shares are being offered at $11.25 per
share, and twenty-five thousand (25,000) Shares are being offered at $11.50
per share. The Shares are being offered by, and are being sold through
ordinary brokerage transactions, with customary commissions being paid by the
Selling Shareholder in connection with such resale. The Company will not
receive any of the proceeds from the resale of the Shares offered hereby.
The Common Stock is listed on the New York Stock Exchange (the
"NYSE") under the symbol KEG. On March 21, 2000, the closing price of the
Common Stock, as reported on the NYSE, was $11.5625 per share.
FOR A DISCUSSION OF CERTAIN FACTORS THAT SHOULD BE CONSIDERED BY
PROSPECTIVE INVESTORS, SEE "RISK FACTORS" ON PAGE 4 OF OUR PROSPECTUS DATED
FEBRUARY 6, 1998.
-----------------------------------------------
Neither the SEC nor any state securities commission has approved these
securities or determined that this prospectus supplement is accurate or
complete. Any representation to the contrary is illegal.
-----------------------------------------------
The date of this prospectus supplement is March 22, 2000.