<PAGE> 1
As filed with the Securities and Exchange Commission on August 25, 1997
Registration No. 333-25811
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
POST-EFFECTIVE
AMENDMENT NO. 1
TO
FORM S-4
REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933
DI INDUSTRIES, INC.
(Exact name of registrant as specified in its charter)
<TABLE>
<S> <C> <C>
TEXAS 1381 74-2144774
(State or other jurisdiction (PrimaryStandardIndustrial (I.R.S. Employer
of incorporation or organization) Classification CodeNumber) Identification No.)
</TABLE>
10370 RICHMOND AVENUE, SUITE 600
HOUSTON, TEXAS 77042-4136
713-435-6100
(Address, including zip code, and telephone
number, including area code, of registrant's principal
executive offices)
T. SCOTT O'KEEFE
SENIOR VICE PRESIDENT AND CHIEF FINANCIAL OFFICER
DI INDUSTRIES, INC.
10370 RICHMOND AVENUE, SUITE 600
HOUSTON, TEXAS 77042-4136
713-435-6100
(Name, address, including zip code, and telephone
number, including area code, of agent for service)
With copies to:
<TABLE>
<S> <C>
Nick D. Nicholas John A. Watson
Porter & Hedges, L.L.P. Fulbright & Jaworski L.L.P.
700 Louisiana, 35th Floor 1301 McKinney, Suite 5100
Houston, Texas 77002-2370 Houston, Texas 77010-3095
Telephone: (713) 226-0637 Telephone: (713) 651-5151
Telecopier: (713) 226-0237 Telecopier: (713) 651-5246
</TABLE>
APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC: N/A
If the securities being registered on this form are being offered in
connection with the formation of a holding company and there is compliance with
General Instruction G, check the following box. [ ]
<PAGE> 2
DI Industries, Inc., a Texas corporation (the "Company"), registered
19,090,910 shares of its common stock, par value $.10 per share (the "Common
Stock"), on Registration Statement on Form S-4 No. 333-25811 (the "Registration
Statement") to be issued as consideration for its acquisition of Grey Wolf
Drilling Company, a Texas corporation ("Grey Wolf"), through the merger (the
"Merger") of Grey Wolf with and into Drillers, Inc., a Texas corporation and
wholly- owned subsidiary of the Company, pursuant to a Plan and Agreement of
Merger dated March 7, 1997 (the "Merger Agreement"). The number of shares of
Common Stock registered under the Registration Statement contemplated a
variable exchange ratio, which, when calculated at the effective date of the
Merger, resulted in the necessity to issue fewer shares than were initially
registered. A total of 13,999,957 shares were issued under to the Merger
Agreement. Pursuant to the undertaking given by the Company in the
Registration Statement in accordance with Item 512(a)(3) of Regulation S-K, the
Company hereby removes the remaining 5,090,953 shares from registration, which
represents the number of shares registered less the number issued in the
Merger.
<PAGE> 3
SIGNATURES
Pursuant to the requirements of the Securities Act of 1933, the
registrant has duly caused this Registration Statement to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of Houston,
State of Texas, on August 22, 1997.
DI INDUSTRIES, INC.
/s/ T. SCOTT O'KEEFE
-------------------------------
T. Scott O'Keefe,
Senior Vice President and
Chief Financial Officer
Pursuant to the requirements of the Securities Act of 1933, this
Registration Statement has been signed by the following persons in the
capacities indicated on August 22, 1997.
<TABLE>
<CAPTION>
SIGNATURE TITLE
<S> <C>
/s/ THOMAS P. RICHARDS* President and
- ----------------------------------------------------- Chief Executive Officer
Thomas P. Richards
/s/ T. SCOTT O'KEEFE Senior Vice President
- ----------------------------------------------------- and Chief Financial Officer
T. Scott O'Keefe
Director
- -----------------------------------------------------
William T. Donovan
/s/ DAVID W. WEHLMANN* Vice President and Controller
- -----------------------------------------------------
David W. Wehlmann
/s/ LUCIEN FLOURNOY* Director
- -----------------------------------------------------
Lucien Flournoy
/s/ PETER M. HOLT* Director
- -----------------------------------------------------
Peter M. Holt
Director
- -----------------------------------------------------
James K.B. Nelson
/s/ ROY T. OLIVER, JR.* Director
- -----------------------------------------------------
Roy T. Oliver, Jr.
/s/ IVAR SIEM* Chairman of the Board
- ----------------------------------------------------- and Director
Ivar Siem
/s/ STEVEN A. WEBSTER* Director
- -----------------------------------------------------
Steven A. Webster
/s/ WILLIAM R. ZIEGLER* Vice Chairman of the
- ----------------------------------------------------- Board and Director
William R. Ziegler
* /s/ T. SCOTT O'KEEFE
---------------------------------------------------------
T. Scott O'Keefe
(As Attorney-in-Fact)
</TABLE>
