HORIZON ORGANIC HOLDING CORP

Q: Sep 30 2003

Q: Jun 30 2003

Q: Mar 31 2003

FY: Dec 31 2002

Q: Sep 30 2002

Q: Jun 30 2002

Q: Mar 31 2002

FY: Dec 31 2001

Q: Sep 30 2001

Q: Jun 30 2001

Q: Mar 31 2001

FY: Dec 31 2000

Q: Sep 30 2000

Q: Jun 30 2000

Q: Mar 31 2000

FY: Dec 31 1999

Q: Sep 30 1999

Q: Jun 30 1999

Q: Mar 31 1999

FY: Dec 31 1998

12

12

12

5,7

9

Other events

7

2,7

7

7

Prospectus Supplement for Delayed or Continuous Offering

Prospectus Supplement for Primary Offering

Prospectus Supplement for Primary Offering

Automatic Shelf Registration

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

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

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

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

Prospectus Supplement with Pricing Information

Amended Initial Registration Statement

Amended Initial Registration Statement

Amended Initial Registration Statement

No description available

Amended Initial Registration Statement

Amended Initial Registration Statement

Registration (IPO) statement under Securities Act of 1933

Definitive Proxy Statement

No description available

No description available

No description available

No description available

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

FMR CORP

HANCOCK JOHN FINANCIAL SERVICES INC

GABELLI ASSET MANAGEMENT INC ET AL

DEAN FOODS CO/

DEAN FOODS CO/

PAUL KATHRYN A

GABELLI GROUP CAPITAL PARTNERS INC;GABELLI ASSET MANAGEMENT INC ET AL;GABELLI MARIO J

GABELLI GROUP CAPITAL PARTNERS INC;GABELLI MARIO J;GABELLI ASSET MANAGEMENT INC ET AL

GABELLI GROUP CAPITAL PARTNERS INC; GABELLI ASSET MANAGEMENT INC ET AL; GABELLI MARIO J

GABELLI GROUP CAPITAL PARTNERS INC; GABELLI ASSET MANAGEMENT INC ET AL; GABELLI MARIO J

GABELLI GROUP CAPITAL PARTNERS INC;GABELLI ASSET MANAGEMENT INC ET AL;GABELLI MARIO J

HORIZON ORGANIC HOLDING CORP

ZOLEZZI ANTHONY J

GAIDANO DON J

GABELLI ASSET MANAGEMENT INC ET AL

GABELLI GROUP CAPITAL PARTNERS INC;GABELLI ASSET MANAGEMENT INC ET AL;GABELLI MARIO J

GABELLI ASSET MANAGEMENT INC ET AL

HORIZON ORGANIC HOLDING CORP

HORIZON ORGANIC HOLDING CORP

GABELLI ASSET MANAGEMENT INC ET AL

Post-effective amendment to an automatic shelf registration statement