PENTON MEDIA INC

Q: Sep 30 2006

Q: Jun 30 2006

Q: Mar 31 2006

FY: Dec 31 2005

Q: Sep 30 2005

Q: Sep 30 2004

Q: Jun 30 2005

Q: Jun 30 2004

Q: Mar 31 2004

Q: Mar 31 2005

Q: Mar 31 2005

FY: Dec 31 2004

FY: Dec 31 2004

Q: Sep 30 2004

Q: Jun 30 2004

Q: Mar 31 2004

FY: Dec 31 2003

Q: Sep 30 2003

Q: Jun 30 2003

Q: Mar 31 2003

Material Modifications to Rights of Security Holders

8.01,9.01

8.01,9.01

Other Events

8.01,9.01

8.01,9.01

8.01,9.01

7.01,9.01

1.01,8.01,9.01

Regulation FD Disclosure

1.01

1.01,8.01,9.01

Regulation FD Disclosure

Regulation FD Disclosure

Regulation FD Disclosure

Entry into a Material Definitive Agreement

7.01,9.01

Entry into a Material Definitive Agreement

Regulation FD Disclosure

8.01,9.01

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

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

Prospectus Supplement for Primary Offering

Registration statement under Securities Act of 1933 (amendment)

Registration of Securities on Exchange (amendment)

Prospectus Supplement for Primary Offering

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933 (amendment)

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

Registration of Securities on Exchange (amendment)

Prospectus Supplement for Primary Offering

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933

Registration statement under Securities Act of 1933

Prospectus Supplement with Pricing Information

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

No description available

Additional Information for Proxy Statement/ Votes

No description available

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Preliminary Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Preliminary Proxy Statement

Additional Information for Proxy Statement/ Votes

Required Information in Proxy Statement

No description available

Definitive Proxy Statement

Preliminary Proxy Statement

Definitive Proxy Statement

NEW GENERATION ADVISERS INC

SANDLER CAPITAL MANAGEMENT

GAMCO INVESTORS, INC. ET AL

DENNY DARRELL C

VICE PRESTON L

NUSSBAUM DAVID B

ABRY MEZZANINE PARTNERS LP

USEP II Co-Investment Partners, LLC; U.S. EQUITY PARTNERS II (U.S. Parallel), LP; U.S. EQUITY PARTNERS II (Offshore), LP; U.S. EQUITY PARTNERS II, LP; Prism Business Media Holdings, LLC

Wasserstein Partners (Offshore), Ltd; WASSERSTEIN INVESTMENTS, LLC; WASSERSTEIN HOLDINGS, LLC; Prism Business Media Holdings, Inc.; Wasserstein Bruce; Wasserstein Partners, LP; WASSERSTEIN & CO., LP

Prism Business Media Holdings, Inc.

ABRY MEZZANINE PARTNERS LP

SANDLER CAPITAL MANAGEMENT

ABRY MEZZANINE PARTNERS LP

SANDLER CAPITAL MANAGEMENT

Powers David

GAMCO INVESTORS, INC. ET AL

GREENE R DOUGLAS

Kingshott Adrian

GABELLI ASSET MANAGEMENT INC ET AL

Levy Harlan A

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

06

06

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)