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SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, DC 20549
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SCHEDULE 13G
INFORMATION STATEMENT PURSUANT TO RULES 13d-1 and 13d-2
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(Amendment No. 5)
VICOR CORPORATION
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(Name of Issuer)
Common Stock, Par Value $.01 Per Share
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(Title of Class of Securities)
925815 10 2
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(CUSIP Number)
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CUSIP No. 925815 10 2 13G Page 2 of 6 Pages
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1. NAME OF REPORTING PERSON
S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Patrizio Vinciarelli
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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
United States
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NUMBER OF 5. SOLE VOTING POWER 20,980,636
SHARES ----------------------------------------------------
BENEFICIALLY 6. SHARED VOTING POWER 0
OWNED BY ----------------------------------------------------
EACH 7. SOLE DISPOSITIVE POWER 20,980,636
REPORTING ----------------------------------------------------
PERSON WITH 8. SHARED DISPOSITIVE POWER 0
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9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING
PERSON
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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
49.8%
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12. TYPE OF REPORTING PERSON
IN
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CUSIP No. 925815 10 2 13G Page 3 of 6 Pages
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ITEM 1(a). NAME OF ISSUER:
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Vicor Corporation
ITEM 1(b). ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES:
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23 Frontage Road, Andover, MA 01810
ITEM 2(a). NAME OF PERSON FILING:
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Patrizio Vinciarelli
ITEM 2(b). ADDRESS OF PRINCIPAL BUSINESS OFFICE OR, IF NONE, RESIDENCE:
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Vicor Corporation, 23 Frontage Road, Andover, MA 01810
ITEM 2(c). CITIZENSHIP:
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United States
ITEM 2(d) TITLE OF CLASS OF SECURITIES:
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Common Stock, par value $.01 per share
ITEM 2(e) CUSIP NUMBER:
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925815 10 2
ITEM 3. IF THIS STATEMENT IS FILED PURSUANT TO RULES 13D-1(b), OR
13D-2(b), CHECK WHETHER THE PERSON FILING IS A:
Not applicable
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CUSIP No. 925815 10 2 13G Page 4 of 6 Pages
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ITEM 4. OWNERSHIP.
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If the percent of the class owned, as of December 31 of the year covered by
the statement, or as of the last day of any month described in Rule 13d-1
(b)(2), if applicable, exceeds five percent, provide the following information
as of that date and identify those shares which there is a right to acquire.
(a) Amount beneficially owned: 20,980,636
(this amount includes 4,744 shares which the Reporting
Person has the right to acquire upon the exercise of stock
options)
(b) Percent of class:
49.8%
(c) Number of shares as to which such person has:
(i) Sole power to vote or to direct the vote: 20,980,636
As of December 31, 1996, Mr. Vinciarelli was the beneficial
owner of 9,956,988 shares of Vicor Corporation Common Stock.
Additionally, he owned 11,023,648 shares of Vicor
Corporation Class B Common Stock which may be converted at
any time into 11,023,648 shares of Common Stock.
(ii) Shared power to vote or to direct the vote: 0
(iii) Sole power to dispose or to direct the disposition of:
20,980,636
(iv) Shared power to dispose or to direct the disposition of: 0
ITEM 5. OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS.
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Not applicable.
ITEM 6. OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON.
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Not applicable.
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CUSIP No. 925815 10 2 13G Page 5 of 6 Pages
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ITEM 7. IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH
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ACQUIRED THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING
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COMPANY.
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Not applicable.
ITEM 8. IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP.
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Not applicable.
ITEM 9. NOTICE OF DISSOLUTION OF GROUP.
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Not applicable.
ITEM 10. CERTIFICATION.
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Not applicable.
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CUSIP No. 925815 10 2 13G Page 6 of 6 Pages
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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.
Dated: July 18, 1997 /s/ Patrizio Vinciarelli
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Name: Patrizio Vinciarelli
