HORIZON ORGANIC HOLDING CORP

Prospectus Supplement for Delayed or Continuous Offering

Prospectus Supplement for Primary Offering

Prospectus Supplement for Primary Offering

Post-effective amendment to an automatic shelf registration statement

Automatic Shelf Registration

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

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

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

No description available

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

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

12

No description available

Definitive Proxy Statement

No description available

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

12

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)

No description available

No description available

No description available

No description available

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

No description available

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

12

5,7

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

9

Definitive Proxy Statement

Annual report pursuant to 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)

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

Other events

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)

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)

7

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

2,7

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)

Definitive Proxy Statement

Annual report pursuant to Section 13 or 15(d)

7

7

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)

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

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

ZOLEZZI ANTHONY J

GAIDANO DON J

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