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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
SCHEDULE 13G/A
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(AMENDMENT NO. 1)*
Simulation Sciences Inc.
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(NAME OF ISSUER)
Common Stock
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(TITLE OF CLASS OF SECURITIES)
829213107
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(CUSIP NUMBER)
Check the following box if a fee is being paid with this statement [ ]. (A fee
is not required only if the filing person: (1) has a previous statement on
file reporting beneficial ownership of more than five percent of the class of
securities described in Item 1; and (2) has filed no amendment subsequent
thereto reporting beneficial ownership of five percent or less of such class.)
(See Rule 13d-7).
*The remainder of this cover page shall be filled out for a reporting person's
initial filing of this form with respect to the subject class of securities,
and for any subsequent amendment containing information which would alter the
disclosures provided in a prior cover page.
The information required in the remainder of this cover page shall not be
deemed to be "filed" for the purpose of Section 18 of the Securities Exchange
Act of 1934 ("Act") or otherwise subject to the liabilities of that section of
the Act but shall be subject to all other provisions of the Act (however, see
the Notes).
Page 1 of 5 Pages
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CUSIP NO. 829213107 SCHEDULE 13G Page 2 of 5 Pages
1 NAMES OF REPORTING PERSONS
S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Simulation Sciences Inc. 401(k) Plan
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2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ]
(b) [ ]
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3 SEC USE ONLY
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4 CITIZENSHIP OR PLACE OF ORGANIZATION
California
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5 SOLE VOTING POWER
NUMBER OF 0
SHARES --------------------------------------------------------
BENEFICIALLY 6 SHARED VOTING POWER
OWNED BY 1,034,800
EACH --------------------------------------------------------
REPORTING 7 SOLE DISPOSITIVE POWER
PERSON WITH 0
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8 SHARED DISPOSITIVE POWER
0
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9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
1,034,800
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10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN
SHARES* [ ]
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11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
7.319%
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12 TYPE OF REPORTING PERSON*
EP
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*SEE INSTRUCTIONS BEFORE FILLING OUT
SEC 1745 (2-95)
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CUSIP No. 829213107 Page 3 of 5 Pages
ITEM 1.
(a) NAME OF ISSUER: Simulation Sciences Inc.
(b) ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES:
601 Valencia Avenue, #100
Brea, CA 92823
ITEM 2.
(a) NAME OF PERSON FILING:
Simulation Sciences Inc. 401(k) Plan
(b) ADDRESS OF PRINCIPAL OFFICE:
601 Valencia Avenue, #100
Brea, CA 92823
(c) CITIZENSHIP:
California
(d) TITLE OF CLASS OF SECURITIES: Common Stock
(e) CUSIP NUMBER: 829213107
ITEM 3. If this statement is filed pursuant to Rule 13d-1(b) or 13d-2(b),
check whether the person filing is a:
(a) [ ] Broker or Dealer registered under Section 15 of the Act
(b) [ ] Bank as defined in section 3(a)(6) of the Act
(c) [ ] Insurance Company as defined in section 3(a)(19) of
the Act
(d) [ ] Investment Company registered under section 8 of the
Investment Company Act
(e) [ ] Investment Adviser registered under section 203 of the
Investment Advisers Act of 1940
(f) [X] Employee Benefit Plan, Pension Fund which is subject to
the provisions of the Employee Retirement Income Security
Act of 1974 or Endowment Fund, see section
240.13d-1(b)(1)(ii)(F)
(g) [ ] Parent Holding Company, in accordance with section
240.13d-1(b)(ii)(G) (Note: See Item 7)
(h) [ ] Group, in accordance with section 240.13d-1(b)(1)(ii)(H)
ITEM 4. Ownership
(a) AMOUNT BENEFICIALLY OWNED:
1,034,800
(b) PERCENT OF CLASS: 7.319%
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CUSIP No. 829213107 Page 4 of 5 Pages
(c) NUMBER OF SHARES AS TO WHICH SUCH PERSON HAS:
<TABLE>
<S> <C> <C>
(i) Sole power to vote or to direct the vote: 0
(ii) Shared power to vote or to direct the vote: 1,034,800
(iii) Sole power to dispose or direct the disposition of : 0
(iv) Shared power to dispose or direct the disposition of: 0
</TABLE>
ITEM 5. OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS
N/A
ITEM 6. OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON.
N/A
ITEM 7. IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED THE
SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY
N/A
ITEM 8. IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP
N/A
ITEM 9. NOTICE OF DISSOLUTION OF GROUP
N/A
ITEM 10. CERTIFICATION
N/A
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CUSIP No. 829213107 Page 5 of 5 Pages
ITEM 10.
By signing below I certify that, to the best of my knowledge and
belief, the securities referred to above were acquired in the ordinary course
of business and were not acquired for the purpose of and do not have the effect
of changing or influencing the control of the issuer of such securities and
were not acquired in connection with or as a participant in any transaction
having such purposes or effect.
SIGNATURE
After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and
correct.
February 9, 1998
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Date
/s/ CAROLE MORRIS
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Signature
Carole Morris
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Name/Title
Director
Human Resource Operations
