<PAGE>
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OMB APPROVAL
UNITED STATES OMB NUMBER: 3235-0145
SECURITIES AND EXCHANGE COMMISSION EXPIRES: OCTOBER 31, 1997
WASHINGTON, D.C. 20549 ESTIMATED AVERAGE BURDEN
HOURS PER RESPONSE . . . 14.90
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SCHEDULE 13D
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(AMENDMENT NO. )*
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Catalyst Semiconductor, Inc.
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(Name of Issuer)
Common Stock
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(Title of Class of Securities)
148881-10-5
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(CUSIP Number)
C. Michael Powell, 2231 Calle de Luna, Santa Clara, California 95054
(408) 748-7700
- -------------------------------------------------------------------------------
(Name, Address and Telephone Number of Person Authorized to Receive Notices and
Communications)
-------------------------------------------------------
(Date of Event which Requires Filing of this Statement)
If the filing person has previously filed a statement on Schedule 13G to report
the acquisition which is the subject of this Schedule 13D, and is filing this
schedule because of Rule 13d-l(b)(3) or (4), check the following box [_].
Check the following box if a fee is being paid with the statement [_]. (A fee is
not required only if the reporting 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.)
Note: Six copies of this statement, including all exhibits, should be filed
with the Commission. See Rule 13d-1(a) for other parties to whom copies are to
be sent.
*The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter
disclosures provided in a prior cover page.
The information required on 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).
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CUSIP NO. N/A SCHEDULE 13D PAGE 1 OF 5 PAGES
- ----------------------- ---------------------
- ------------------------------------------------------------------------------
NAME OF REPORTING PERSON
1 S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
United Microelectronics Corporation
- ------------------------------------------------------------------------------
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
2 (a) [_]
(b) [X]
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SEC USE ONLY
3
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SOURCE OF FUNDS*
4
WC
- -------------------------------------------------------------------------------
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
ITEMS 2(d) or 2(e)
5
[_]
- ------------------------------------------------------------------------------
CITIZENSHIP OR PLACE OF ORGANIZATION
6
Hsinchu, Taiwan, Republic of China
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SOLE VOTING POWER
7
NUMBER OF Out of the Issuer's 7,937,513 outstanding shares of
Common Stock, the reporting person owns 650,000
shares.
SHARES -----------------------------------------------------------
SHARED VOTING POWER
BENEFICIALLY 8
N/A
OWNED BY
-----------------------------------------------------------
EACH SOLE DISPOSITIVE POWER
9
REPORTING N/A
PERSON -----------------------------------------------------------
SHARED DISPOSITIVE POWER
WITH 10
N/A
- ------------------------------------------------------------------------------
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
11
8.2%
- ------------------------------------------------------------------------------
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
12
- ------------------------------------------------------------------------------
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
13
8.2%
- ------------------------------------------------------------------------------
TYPE OF REPORTING PERSON*
14
CO
- ------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
INCLUDE BOTH SIDES OF THE COVER PAGE, RESPONSES TO ITEMS 1-7
(INCLUDING EXHIBITS) OF THE SCHEDULE, AND THE SIGNATURE ATTESTATION.
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SCHEDULE 13D
Item 1. Security and Issuer
The class of equity securities to which this statement relates is
Common Stock.
The name and address of the issuer of such securities are:
Catalyst Semiconductor, Inc. at 2231 Calle de Luna, Santa Clara,
California 95054
Item 2. Identity and Background
(a) United Microelectronics Corporation;
(b) No. 13 Innovation Road I, Science Based Industrial Park, Hsinchu,
Taiwan, Republic of China;
(c) N/A
(d) N/A
(e) Neither UMC nor any of the persons listed in the General
Instructions has been a party to a proceeding as described in the
instructions (under U.S., U.S. State, or Taiwan Law).
(f) Republic of China
Item 3. Source and Amount of Funds or Other Consideration
UMC used working capital of UMC.
Item 4. Purpose of Transaction
N/A
Item 5. Interest in Securities of the Issuer
(a) The reporting person beneficially owns 650,000 or 8.2% shares of
the issuer's outstanding 7,937,513 shares of Common Stock;
(b) The reporting person has sole power to vote or to direct the
vote;
(c) UMC has not traded any other shares of Catalyst since the date we
acquired the 650,000 shares.
(d) No person other than UMC is known to have the right or powers
described in the instructions.
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(e) N/A
Item 6. Contracts, Arrangements, Understandings or Relationships with Respect to
Securities of the Issuer.
Catalyst Semiconductor, Inc. Stock Purchase Agreement and
There are no contracts between and/or amongst UMC or any person required
to be listed under Item 2 with respect to any securities of Catalyst.
Item 7. Material to Be Filed as Exhibits
N/A
-2-
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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 14, 1997 /s/MING-KAI TSAI
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Date Signature
Second Group President
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Name/Title
