1
|
NAME
OF REPORTING PERSON
Bel Fuse
Inc.
|
||
2
|
CHECK
THE APPROPRIATE BOX IF A MEMBER OF A GROUP
|
(a) o
(b) o
|
|
3
|
SEC
USE ONLY
|
||
4
|
SOURCE
OF FUNDS
WC
|
||
5
|
CHECK
BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d)
OR 2(e)
|
¨
|
|
6
|
CITIZENSHIP
OR PLACE OF ORGANIZATION
New
Jersey
|
||
NUMBER
OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
|
7
|
SOLE
VOTING POWER
- 0 -
|
|
8
|
SHARED
VOTING POWER
4,370,052*
|
||
9
|
SOLE
DISPOSITIVE POWER
- 0 -
|
||
10
|
SHARED
DISPOSITIVE POWER
4,370,052*
|
||
11
|
AGGREGATE
AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
4,370,052*
|
||
12
|
CHECK
BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
SHARES
|
¨
|
|
13
|
PERCENT
OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
5.0%
|
||
14
|
TYPE
OF REPORTING PERSON
CO
|
1
|
NAME
OF REPORTING PERSON
Bel Ventures
Inc.
|
||
2
|
CHECK
THE APPROPRIATE BOX IF A MEMBER OF A GROUP
|
(a) o
(b) o
|
|
3
|
SEC
USE ONLY
|
||
4
|
SOURCE
OF FUNDS
WC
|
||
5
|
CHECK
BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d)
OR 2(e)
|
¨
|
|
6
|
CITIZENSHIP
OR PLACE OF ORGANIZATION
Delaware
|
||
NUMBER
OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
|
7
|
SOLE
VOTING POWER
- 0 -
|
|
8
|
SHARED
VOTING POWER
4,370,052*
|
||
9
|
SOLE
DISPOSITIVE POWER
- 0 -
|
||
10
|
SHARED
DISPOSITIVE POWER
4,370,052*
|
||
11
|
AGGREGATE
AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
4,370,052*
|
||
12
|
CHECK
BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
SHARES
|
¨
|
|
13
|
PERCENT
OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
5.0%
|
||
14
|
TYPE
OF REPORTING PERSON
CO
|
Item
4.
|
Purpose of
Transaction.
|
Item
5.
|
Interest in Securities
of the Issuer.
|
Item
7.
|
Material to be Filed
as Exhibits.
|
|
1.
|
Letter,
dated June 9, 2008, from Bel Fuse Inc. to the Board of Directors of
Power-One, Inc.
|
|
2.
|
Joint
Filing Agreement, dated June 16, 2008, between Bel Fuse Inc. and Bel
Ventures Inc.
|
Dated: June
16, 2008
|
BEL
FUSE INC.
|
|
By:
|
/s/
Colin W. Dunn
|
|
Name:
|
Colin
W. Dunn
|
|
Title:
|
Vice
President Finance
|
BEL
VENTURES INC.
|
||
By:
|
/s/
Colin W. Dunn
|
|
Name:
|
Colin
W. Dunn
|
|
Title:
|
Vice
President
|