POWER ONE INC

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G) (amendment)

Certification of termination of registration of a class of securities (Section 12(b))

Notice of Effectiveness

Notice of Effectiveness

Notice of Effectiveness

Notice of Effectiveness

Beneficial ownership report for a holder of more than 5% (Schedule 13D) (amendment)

Beneficial ownership report for a holder of more than 5% (Schedule 13D) (amendment)

Post-effective amendment to a registration statement

Post-effective amendment to a registration statement

Post-effective amendment to a registration statement

Post-effective amendment to a registration statement

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

1.02,2.01,3.01,3.03,5.01,5.02,5.03,9.01

Notification of removal from listing and/or registration on a national securities exchange

5.07,7.01,9.01

No description available

No description available

General form for quarterly reports under Section 13 or 15(d)

Annual report pursuant to Section 13 or 15(d) (amendment)

1.01,7.01,9.01

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Annual report pursuant to Section 13 or 15(d)

1.01,2.03,9.01

2.02,9.01

General form for quarterly reports under Section 13 or 15(d)

2.02,9.01

Letter from the SEC

General form for quarterly reports under Section 13 or 15(d)

Correspondence with the SEC

2.02,9.01

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Letter from the SEC

5.02

General form for quarterly reports under Section 13 or 15(d)

Submission of Matters to a Vote of Security Holders

2.02,9.01

Definitive Proxy Statement

Annual report pursuant to Section 13 or 15(d)

2.02,9.01

General form for quarterly reports under Section 13 or 15(d)

Triggering Events That Accelerate or Increase a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement

2.02,9.01

7.01,9.01

General form for quarterly reports under Section 13 or 15(d)

5.07

2.02,9.01

General form for quarterly reports under Section 13 or 15(d)

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

5.07

2.02,9.01

8.01

Definitive Proxy Statement

Annual report pursuant to Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

General form for quarterly reports under Section 13 or 15(d)

Entry into a Material Definitive Agreement

Additional Information for Proxy Statement/ Votes

General form for quarterly reports under Section 13 or 15(d)

Additional Information for Proxy Statement/ Votes

No description available

Annual report pursuant to Section 13 or 15(d)

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

Definitive Proxy Statement

Annual report pursuant to Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

Definitive Proxy Statement

Preliminary Proxy Statement

Definitive Proxy Statement

Letter from the SEC

Letter from the SEC

Correspondence with the SEC

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Preliminary Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

06,UL

Definitive Proxy Statement

POWER ONE INC

POWER ONE INC

WALTERS JAY

THOMPSON RICHARD J

MCKNIGHT TINA D

LEVRAN ALEXANDER

Hogge Steven D

Larsen Gary R

SHAH AJAY B

Ryland Kyle

SLTA Sumeru (GP), L.L.C.

Swanson Richard M

GACEK JON W

WALTERS JAY

LIEBEL HARTMUT

MELLIAR SMITH CHRISTOPHER MARK

Kambiz Hooshmand