UNITED STATES SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
FORM 3
INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES
1. Name and Address of Reporting Person
Williamson, Douglas C.
c/o 3DX Technologies Inc.
12012 Wickchester, Suite 250
Houston, TX 77079-1218
2. Date of Event Requiring Statement (Month/Day/Year)
December 19, 1996
3. IRS or Social Security Number of Reporting Person (Voluntary)
4. Issuer Name and Ticker or Trading Symbol
3DX Technologies Inc.
TDXT
5. Relationship of Reporting Person(s) to Issuer (Check all applicable)
(X) Director (X) 10% Owner ( ) Officer (give title below) ( ) Other
(specify below)
6. If Amendment, Date of Original (Month/Day/Year)
7. Individual or Joint/Group Filing (Check Applicable Line)
( ) Form filed by One Reporting Person
( ) Form filed by More than One Reporting Person
<TABLE>
<CAPTION>
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Table I -- Non-Derivative Securities Beneficially Owned |
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1. Title of Security |2. Amount of |3. Ownership |4. Nature of Indirect |
| Securities | Form: | Beneficial Ownership |
| Beneficially | Direct(D) or | |
| Owned | Indirect(I) | |
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<S> <C> <C> <C>
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<CAPTION>
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Table II -- Derivative Securitites Beneficially Owned |
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1.Title of Derivative |2.Date Exer- |3.Title and Amount | |4. Conver-|5. Owner- |6. Nature of Indirect |
Security | cisable and | of Underlying | |sion or |ship | Beneficial Ownership |
| Expiration | Securities | |exercise |Form of | |
| Date(Month/ |-----------------------|---------|price of |Deriv- | |
| Day/Year) | |Amount |deri- |ative | |
| Date | Expira- | |or |vative |Security: | |
| Exer- | tion | Title |Number of|Security |Direct(D) or | |
| cisable | Date | |Shares | |Indirect(I) | |
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<S> <C> <C> <C> <C> <C> <C> <C>
Warrant to purchase Seni|Immediate|12/24/96 |Senior Redeemable Conve|68,933+ |$5.80 |I |By corporation |
or Redeemable Convertibl| | |rtible Preferred | | | | |
e Preferred Stock, | | | | | | | |
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Series C, par value $.01| | | Stock, Series C, par v| | | | |
per share | | |alue $.01 per share | | | | |
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| | |("Series C Preferred") | | | | |
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Series C Preferred |Immediate|12/24/96 |Common Stock |758,266*+|** |I |By corporation |
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Stock Option (Right to B|*** |01/05/06 |Common Stock |5,170 |$0.58 |D | |
uy) | | | | | | | |
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</TABLE>
Explanation of Responses:
* Includes shares of Series C Preferred issuable upon exercise of Warrant to
purchase Series C Preferred.
** Upon consummation of the Issuer's initial public offering of Common Stock,
each issued and outstanding share of
Series C Preferred will automatically convert into one share of Common
Stock.
*** On January 5, 1996, the reporting person was granted an option to purchase
5,170 shares of Common Stock
(as adjusted for the .517-to-1 reverse stock split occuring in connection with
the Issuer's initial public offering of
Common Stock), pursuant to the Issuer's 1994 Stock Option Plan, as amended.
The shares subject to the option
vest at the rate of 50% of the aggregate number of option shares on December
31, 1996 and thereafter such
shares vest at the rate of 25% of the aggregate number of subject to the option
on each of December 31, 1997 and
December 31,
1998.
+ The reporting person disclaims beneficial ownership of these shares except to
the extent of his pecuniary
interest
therein.
SIGNATURE OF REPORTING PERSON
/s/ Douglas C. Williamson
DATE
December 18, 1996
