Filed Pursuant to Rule 424(b)(3)
                                                Registration No. 333-86174

PROSPECTUS


                               PENTON MEDIA, INC.

                               8,871,349 SHARES OF

                          COMMON STOCK, PAR VALUE $.01


     The selling stockholders are offering shares of our common stock by means
of this prospectus, and the maximum number of shares that they may offer are
identified on pages 18-20 of this prospectus.

                             -----------------------

     Our common stock is listed on the New York Stock Exchange under the symbol
"PME." On July 10, 2002, the last reported sale price of our common stock on the
NYSE was $1.36 per share. The selling stockholders may offer shares through
public or private transactions, at prevailing market prices, or at privately
negotiated prices. More detailed information about the distribution of the
shares is found in the section of this prospectus entitled "Plan of
Distribution."

                             -----------------------


              SEE "RISK FACTORS" BEGINNING ON PAGE 4 TO READ ABOUT
              CERTAIN FACTORS BEFORE INVESTING IN OUR COMMON STOCK.

                             -----------------------


     THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES
AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE
SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED
UPON THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE
CONTRARY IS A CRIMINAL OFFENSE.


                 The date of this prospectus is July 11, 2002.







                                TABLE OF CONTENTS

WHERE YOU CAN FIND MORE INFORMATION.........................................1

INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE.............................1

ABOUT THIS PROSPECTUS.......................................................3

FORWARD-LOOKING STATEMENTS..................................................3

ABOUT PENTON................................................................4

RISK FACTORS................................................................4

USE OF PROCEEDS............................................................11

DESCRIPTION OF OUR PREFERRED STOCK AND WARRANTS............................11

SELLING STOCKHOLDERS.......................................................18

PLAN OF DISTRIBUTION.......................................................20

LEGAL MATTERS..............................................................21

EXPERTS....................................................................21








                       WHERE YOU CAN FIND MORE INFORMATION

         We are subject to the informational reporting requirements of the
Securities Exchange Act of 1934. We file reports, proxy statements and other
information with the Securities and Exchange Commission. You can inspect and
copy the reports, proxy statements and other information at the Public Reference
Room of the SEC located at Room 1024, 450 Fifth Street, N.W., Washington, D.C.
20549. You can obtain copies of these materials at prescribed rates from the
Public Reference Room of the SEC. The SEC maintains a web site at
http://www.sec.gov that contains reports, proxy and information statements and
other information on a delayed basis regarding registrants, including us, that
file electronically with the SEC. Our common stock, par value $.01 per share, is
listed on The New York Stock Exchange under the symbol "PME." You can also
inspect and copy any reports, proxy statements and other information that we
file with the SEC at the offices of The New York Stock Exchange located at 20
Broad Street, New York, NY 10005.

                 INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE

         The SEC allows us to incorporate by reference the information that we
file with the SEC. This allows us to disclose important information to you by
referring you to those documents rather than repeating them in full in this
prospectus. The information incorporated by reference in this prospectus
contains important business and financial information. In addition, information
that we file with the SEC after the date of this prospectus automatically
updates and supersedes the information contained in this prospectus and
incorporated filings. We have previously filed the following documents with the
SEC (File No. 1-14337) and are incorporating them into this prospectus by
reference:

          -         our Annual Report on Form 10-K for the fiscal year ended
               December 31, 2001;

          -         our Current Report on Form 8-K dated and filed with the SEC
               on March 11, 2002;

          -         our Current Report on Form 8-K dated March 10, 2002 and
               filed with the SEC on March 13, 2002;

          -         our Current Report on Form 8-K dated and filed with the SEC
               on March 19, 2002;

          -         our Current Report on Form 8-K dated and filed with the SEC
               on March 22, 2002;

          -         our Current Report on Form 8-K dated and filed with the SEC
               on March 28, 2002;

          -         our Current Report on Form 8-K dated May 1, 2002 and filed
                with the SEC on May 3, 2002;

          -         our Definitive Proxy Statement on Schedule 14A dated and
               filed with the SEC on April 30, 2002;

          -         our Definitive Proxy Supplement on Schedule 14A dated
               and filed with the SEC on May 10, 2002;

          -         our Quarterly Report on Form 10-Q for the quarter ended
                March 31, 2002;

          -         the description of the rights contained in our Registration
               Statement on Form 8-A filed with the SEC on June 12, 2000,
               including any amendment or report filed for the purpose of
               updating such description; and

          -         the description of our common stock contained in our
               Registration Statement on Form 8-A filed with the SEC on July 24,
               1998, including any amendment or report filed for the purpose of
               updating such description.

         Each document or report that we file pursuant to Section 13(a), 13(c),
14 or 15(d) of Exchange Act after the date of this prospectus and until the
offering of the securities terminates will be incorporated by reference into
this prospectus and to be a part of this prospectus from the date of filing of
that document.



                                       1



         You may request a copy of any of these filings (other than an exhibit
to those filings unless we have specifically incorporated that exhibit by
reference into the filing), at no cost, by telephoning or writing to us at the
following phone number and address:

                               Penton Media, Inc.
                             1300 East Ninth Street
                              Cleveland, Ohio 44114
                 Attention: Director of Corporate Communications
                         Telephone Number: 216-696-7000



                                       2




                              ABOUT THIS PROSPECTUS

         References in the prospectus to the term "we," "us" or "Penton" or
other similar terms mean Penton Media, Inc. and its consolidated subsidiaries,
unless we state otherwise or the context indicates otherwise. The term "common
stock" means our common stock, $.01 par value, and the term "preferred stock"
means our Series B Convertible Preferred Stock, $.01 par value, unless the
context indicates a different meaning.

         Except as otherwise set forth in this prospectus, we have agreed to pay
the expenses incurred in registering the shares of common stock being offered by
this prospectus.

         This document is called a prospectus and is part of a registration
statement that we filed with the SEC using a "shelf" registration or continuous
offering process. Under this shelf process, the selling stockholders may from
time to time sell any combination of the securities described in this prospectus
in one or more offerings.

         You should rely only on the information contained or incorporated by
reference in this prospectus and in any prospectus supplement. Neither we, nor
any underwriters or agents, have authorized anyone to provide you with different
information. The selling stockholders are not offering the securities in any
state where the offering is prohibited. You should not assume that the
information in this prospectus, any prospectus supplement, or any document
incorporated by reference, is truthful or complete at any date other than the
date mentioned on the cover page of those documents.

         The information in this prospectus is accurate as of the date on the
front cover. You should not assume that the information contained in this
prospectus is accurate as of any other date.


                           FORWARD-LOOKING STATEMENTS

         A number of statements made in or incorporated by reference into this
prospectus are not historical or current facts, but deal with potential future
circumstances and developments. Those statements are qualified by the inherent
risks and uncertainties surrounding future expectations generally, and also may
materially differ from our actual future experience involving any one or more of
these matters and subject areas. We attempted to identify, in context, some of
the factors that we currently believe may cause future experience and results to
differ from our current expectations regarding the relevant matter or subject
area. We have identified some of these forward-looking statements with words
such as "anticipates," "estimates," "believes," "expects," "intends," "may,"
"will," "should" or the negative of those words or other comparable terminology.
The operation and results of our business also may be subject to the effect of
other risks and uncertainties, including but not limited to:

          -    economic uncertainty, exacerbated by terrorist attacks on the
               United States;

          -    the performance of our Internet/Broadband industry sector;

          -    fluctuations in advertising revenue with general economic cycles;

          -    the effectiveness of our cost saving efforts;

          -    the seasonality of revenue from trade shows and conferences;

          -    our ability to penetrate new markets internationally;

          -    our ability to launch new products that fit strategically with
               and add value to our businesses;

          -    the infringement or invalidation of our intellectual property
               rights; and

          -    increases in paper and postage costs.



                                       3




                                  ABOUT PENTON

         We are a leading, global business-to-business media company. We provide
media products that deliver proprietary business information to owners,
operators, managers, and professionals in the industries we serve. Through these
products, we offer industry suppliers multiple ways to reach their customers and
prospects as part of their sales and marketing efforts. We produce specialized
trade magazines, trade shows and conferences, and online media products. We
benefit from revenue diversification, primarily as a result of our business
presence in 12 different industry sectors consisting of over 20,000 advertisers
and exhibitors.

         We became an independent company, incorporated in the State of
Delaware, as a result of our spinoff from Pittway Corporation in August 1998.
Our principal executive office is located at 1300 East Ninth Street, Cleveland,
Ohio 44114, and our telephone number is (216) 696-7000. Our common stock is
listed on The New York Stock Exchange under the symbol "PME."


                                  RISK FACTORS

         You should carefully consider the following risks, in addition to the
other information in this prospectus, and the information incorporated by
reference, before deciding to invest in our common stock.


WE HAVE A SIGNIFICANT AMOUNT OF DEBT.

         At March 31, 2002, we had total indebtedness of approximately $331.2
million, excluding approximately $3.8 million of original issue discount on our
10 3/8% senior subordinated notes and approximately $0.8 million of original
issue discount on our 11 7/8% senior secured notes.

         The level of our indebtedness could have important consequences,
including:

          -    limiting cash flow available for general corporate purposes,
               including capital expenditures and acquisitions, because a
               substantial portion of our cash flow from operations must be
               dedicated to servicing our debt;

          -    limiting our ability to obtain additional debt financing in the
               future for working capital, capital expenditures or acquisitions;

          -    making us more vulnerable in the event of a further downturn in
               general economic conditions or in our business; and

          -    limiting our flexibility in reacting to competitive and other
               changes in our industry and economic conditions generally.


         Our current debt levels have subjected us to the risk described above.
If new debt is added to our current debt levels, the impact of these substantial
risks will intensify.


WE MAY NOT BE ABLE TO SERVICE OUR DEBT.

         Our ability to pay or to refinance our indebtedness will depend upon
our future operating performance, which will be affected by general economic,
financial, competitive, business and other factors beyond our control.

         We cannot assure you that our business will generate sufficient cash
flow from operations, that currently anticipated revenue and cost-saving efforts
will be realized on schedule or at all, or that future borrowings will be
available to us under our credit facility or otherwise in amounts sufficient to
enable us to service our debt obligations, to pay our indebtedness at maturity
or otherwise, or to fund our other liquidity needs. If we are unable to meet our
debt obligations or fund our other liquidity needs, we may need to further
restructure or refinance our indebtedness, sell assets or seek additional equity
capital. We cannot assure you that we will be able to accomplish those actions
on satisfactory terms, if at all, which could cause us to default on our
obligations and impair our liquidity. Our ability to restructure or refinance
will depend on the capital markets



                                       4


and our financial condition at such time. Any refinancing of our debt could be
at higher interest rates and may require us to comply with more onerous
covenants, which could further restrict our business operations. In addition,
the terms of the convertible preferred stock and warrants to purchase common
stock, including the conversion price, dividend, and liquidation preference
adjustment provisions that could result in substantial dilution to stockholders,
the redemption price premiums, and board representation rights, all could
negatively impact our ability to access the equity markets in the future.

         Because a significant portion of our operations currently is conducted
through our subsidiaries, our ability to pay our indebtedness, is also dependent
on the cash flows of our subsidiaries and the distribution of those cash flows
to us, or upon loans or other payments of funds by our subsidiaries to us. The
ability of our subsidiaries to make distributions or other payments to us will
depend upon their operating results and applicable laws and any contractual
restrictions contained in the instruments governing their indebtedness. If money
generated by our subsidiaries is not available to us, our ability to repay our
indebtedness may be adversely affected.


CONVERSION OF OUR PREFERRED STOCK AND EXERCISE OF WARRANTS WILL DILUTE OUR
COMMON STOCK, AND THE SALE OF THE UNDERLYING SHARES MAY DEPRESS THE MARKET PRICE
OF OUR COMMON STOCK.

         We have issued 50,000 shares of Series B convertible preferred stock in
a private placement. The shares of preferred stock are convertible into common
stock. We also issued warrants to purchase 1,600,000 shares of common stock.

         The issuance of our common stock upon the conversion of the preferred
stock or the exercise of the warrants described above will likely occur at a
time when the conversion or exercise price is below the market price of our
common stock. Therefore, the conversion or exercise of these securities will
likely have a dilutive effect on the price of our common stock. The conversion
or exercise of these securities will also result in our having more shares of
our common stock outstanding, which would have a dilutive effect on our earnings
per share. If the holders of the preferred stock and warrants were to sell a
large number of their shares over a short period of time, those sales would
likely have an adverse effect on the market price of our common stock. Even the
potential sale of a large number of shares may depress the future market price
of our common stock.

         Certain terms of the preferred stock and warrants may increase this
dilutive effect on the price of our common stock:

          -    Currently, the dividend rate on our preferred stock is 5%. On
               March 19, 2008, the sixth anniversary of the issuance of the
               preferred stock, the dividend rate will increase to 15%. The
               higher dividend rate will result in more shares of common stock
               being issued upon conversion of the preferred stock.

          -    If we fail to comply with certain covenants described in
               "Description of Our Preferred Stock and Warrants -- Covenants"
               below, the conversion price of the preferred stock and the
               exercise price of the warrants will decrease until we are in
               compliance with the relevant covenants. The lower conversion
               price of the preferred stock and exercise price of the warrants
               will result in more shares of common stock being issued upon
               conversion of the preferred stock and exercise of the warrants.

          -    On March 19, 2008, the sixth anniversary of the issuance of the
               preferred stock, the liquidation value of preferred stock will
               increase to $4,570 per share. This increase in the liquidation
               value will result in more shares of common stock being issued
               upon conversion of the preferred stock.


THE TERMS OF OUR DEBT INSTRUMENTS AND PREFERRED STOCK IMPOSE FINANCIAL AND
OPERATING RESTRICTIONS.

         The indentures governing our 10 3/8% senior subordinated notes and our
11 7/8% senior secured notes, our credit facility, and our new convertible
preferred stock contain restrictive covenants that limit our ability to engage
in a variety of transactions, including incurring or guaranteeing additional
indebtedness, making investments, creating liens on our assets, transferring or
selling our assets, paying dividends, or engaging in mergers, acquisitions, or
consolidations. The terms of our credit facility prohibit us from voluntarily
prepaying certain indebtedness.

         A breach of any of the covenants or other provisions in our debt
instruments could result in a default thereunder. Upon the occurrence of an
event of default under our credit facility, the lenders could elect to declare
all amounts outstanding thereunder to be immediately due and payable and
terminate all commitments to extend further credit, which would adversely affect
our ability to fund our operations. An acceleration of the amounts due under our
credit facility would cause us to be in



                                       5



default under the indentures governing our 10 3/8% senior subordinated notes and
our 11 7/8% senior secured notes, enabling acceleration of amounts outstanding.


TRADE SHOW AND CONFERENCE ATTENDANCE HAVE DECLINED SIGNIFICANTLY SINCE THE THIRD
QUARTER OF 2001 AS A RESULT OF THE SLOWDOWN OF ECONOMIES IN THE UNITED STATES,
EUROPE, AND ASIA AND THE SEPTEMBER 11, 2001 TERRORIST ATTACKS, AND A CONTINUED
DECLINE WOULD HAVE A FURTHER MATERIAL ADVERSE EFFECT ON OUR BUSINESS, RESULTS OF
OPERATIONS, AND FINANCIAL CONDITION.

         Prior to the attacks on the United States on September 11, 2001,
bookings for most of our events scheduled for the fourth quarter of 2001 were
running well behind 2000 bookings primarily due to the slowdown of economies in
the United States, Europe, and Asia. For 2001, our trade shows and conferences
revenues decreased $19.2 million and trade shows and conferences adjusted
EBITDA, before general and administrative costs, decreased $26.3 million from
prior year levels. Advance bookings for our trade shows and conferences continue
to be at levels lower than in prior periods. Adjusted for the change in timing
of our Internet World Spring and CRM trade shows from the first quarter of 2001
to the second quarter of 2002, revenues for our trade shows and conferences
declined 42.1% in the first quarter of 2002 over the prior year period. Adjusted
EBITDA on the same basis was $6.6 million in the first quarter of 2002, a
decline of 35.3% compared with the first quarter of 2001. Because our trade
shows and conferences business typically generates higher margins than our other
businesses, decreases in trade shows and conferences revenues cause a
disproportionately greater decrease in our total adjusted EBITDA than do revenue
decreases in our other businesses. Because we had strong attendance at our trade
shows and conferences in the first half of 2001 (particularly our Internet World
Spring show) and expect continued lower attendance in 2002, we anticipate that
our adjusted EBITDA for the first half of 2002 will be lower than the prior-year
period.

         Since September 11, 2001, there has been a decline in air travel due
to, among other things, the public's general reluctance to travel and fears
regarding additional acts of terrorism, as well as reduced operations by
airlines due to, among other things, decreased demands for air travel, new
security directives, and increased costs. The magnitude and duration of these
effects are unknown, but our trade shows and conferences have been negatively
affected. We believe the September attacks caused as much as an additional 10%
to 15% reduction in revenues for the events completed in the fourth quarter of
2001. Continued negative market conditions due to the weakened U.S. economy, the
September 11, 2001 terrorist attacks, any future occurrences of similar
terrorist activities, or threats of such activities and actions by the United
States and other countries that perpetuate a climate of war could cause more
disruption of our trade shows and conferences. If attendance decreases further,
our business, results of operations, and financial condition would be materially
adversely affected.


OUR INTERNET/BROADBAND BUSINESS HAS SIGNIFICANTLY DECLINED, AND A CONTINUED
DECLINE WOULD HAVE A FURTHER MATERIAL ADVERSE EFFECT ON OUR BUSINESS, RESULTS OF
OPERATIONS, AND FINANCIAL CONDITION.

         In 2001, our Internet/Broadband industry sector produced 29% of our
revenue, compared to 36% in 2000. Prior to the events of September 11, 2001, we
were experiencing a general decline in this sector as a result of both the
failure of many Internet products and services companies and the general U.S.
economic decline. Some of our customers went out of business or chose not to
participate in our trade shows and conferences as part of a general trend toward
decreased information technology spending. For example, we saw a significant
decrease in revenues from our high-margin Internet World Spring trade show, and
we saw a general decline in revenues from our technology magazines, especially
Internet World magazine. These trends were exacerbated by the events of
September 11, 2001, causing more substantial declines in the latter part of the
year. Following these events, we were forced to reschedule our Internet World
Fall trade show, and we experienced further reduced attendance levels. Declines
in this sector have continued through the first quarter of 2002, and are
expected only to represent about 15% of total 2002 revenues. Because this
industry sector has typically represented a significant portion of our business
and generated high margins, declines in the Internet/Broadband industry sector
cause a disproportionately greater decrease in our total adjusted EBITDA than do
declines in our other industry sectors. A continued decline in the performance
of these product offerings or a decline in our other product offerings in this
sector, or our inability to regain customers lost to date, would materially
adversely affect our business, results of operations, and financial condition.



                                       6




WE DEPEND ON ADVERTISING REVENUES, WHICH DECREASE DURING ECONOMIC DOWNTURNS AND
FLUCTUATE FROM PERIOD TO PERIOD.

         For the year ended December 31, 2001, we had revenues of $177.0 million
from advertising, which was 47.6% of our revenues. Approximately 55.4% of our
revenues from the first quarter of 2002 came from advertising. Our advertising
revenues fluctuate with general economic cycles, and any material decline in
these revenues would have a material adverse effect on our business, results of
operations, and financial condition. Historically, advertising revenues have
increased during economic recoveries and decreased during both general economic
downturns and regional economic recessions. In a general economic downturn or a
recession, advertisers reduce their advertising budgets, intensify their
attempts to negotiate lower advertising rates, and pay outstanding invoices
slower. We are experiencing some of these effects. Our advertising revenues
decreased by 13.5% from 2000 to 2001. For the first quarter of 2002, advertising
revenues declined $15.6 million or 27.3%, to $41.6 million compared with $57.2
million for the same prior year period.


IF THE U.S. ECONOMY WORSENS, THE COST SAVING EFFORTS WE IMPLEMENTED MAY NOT BE
SUFFICIENT TO ACHIEVE THE BENEFITS WE EXPECT.

         In 2001, we experienced a significant decline in revenues and adjusted
EBITDA primarily due to weak economic conditions, which were exacerbated by the
terrorist attacks of September 11, 2001. This decline was more severe in the
second half of the year and continued into the first quarter of 2002. We cannot
predict if or when the economy or our revenues and adjusted EBITDA will improve.
We have taken a number of steps designed to improve our profits and margins
despite decreased revenues. We have restructured a number of our businesses and
support departments and reduced overhead infrastructure by consolidating and
closing several offices, centralizing information technology services and
outsourcing certain corporate functions. As a result, we recorded special
charges to our income of $87.5 million in 2001 and a special credit of $0.3
million in the first quarter of 2002. If the U.S. economy worsens or additional
terrorist attacks occur, our revenues will likely continue to decline. Decreases
in our revenues cause disproportionately greater decreases in our adjusted
EBITDA. Accordingly, if revenues decline beyond our expectations, the cost
saving efforts we implemented in the second half of 2001 and first quarter of
2002 will likely not achieve the benefits we expect. We may be forced to take
additional cost saving steps that could result in additional charges and
otherwise materially adversely affect our business.


THE PROFITABILITY AND SUCCESS OF OUR TRADE SHOWS AND CONFERENCES COULD BE
ADVERSELY AFFECTED IF WE ARE UNABLE TO OBTAIN DESIRABLE DATES AND LOCATIONS OR
ARE UNABLE TO INCREASE THE SIZE OF OUR EVENTS.

         In 2001, about 40.1% of our revenue came from trade shows and
conferences. For the first quarter of 2002, about 30% of our revenue came from
trade shows and conferences. We increasingly compete for desirable dates and
venues for our trade shows and conferences. As this competition intensifies, we
may be unable to schedule important engagements. If we are unable to obtain
desirable dates and venues for events, the profitability and future success of
these events could be adversely affected. Although we generally reserve venues
and dates more than one year in advance, these reservations are not binding
until we sign a contract with a facility operator. These contracts generally
hold venues and dates for only one year. In addition, we may desire to increase
the size of our trade shows and conferences to take advantage of increasing
demand in the future. If we are unable to secure larger venues with suitable
exhibit space to accommodate this demand, the growth of our trade shows and
conferences business could be adversely affected.


OUR TRADE SHOWS AND CONFERENCES AND PUBLISHING REVENUES VARY DUE TO THE MOVEMENT
OF ANNUAL EVENT OR PUBLICATION MAILING DATES AND TIMING OF OUR CUSTOMERS'
PRODUCT LAUNCHES.

         Our trade shows and conferences and publishing revenues are seasonal,
primarily due to the timing of our large trade shows and conferences and
publication of our large industry directories. Because event revenues are
recognized when a particular event is held, and publication revenues are
recognized in the month publications are mailed, we may also experience
fluctuations in quarterly revenues based on the movement of annual events or
mailing dates from one quarter to another. In 2001, about 30.3% of our total
revenue was generated during the first quarter, about 28.7% during the second,
about 16.6% during the third, and about 24.4% of our revenue was generated
during the fourth. We expect approximately 21.4% of our total revenue for 2002
to come from the first quarter.

         Our trade show and conference revenues may fluctuate from period to
period based on the spending patterns of our customers. Many of our large
customers concentrate their trade show participation around major product
launches. Because we cannot always know or predict when our large customers
intend to launch new products, it is difficult to anticipate any related
fluctuations in our trade shows and conferences revenues.



                                       7



LOSS OF KEY PERSONNEL COULD IMPAIR OUR SUCCESS.

         We benefit from the leadership and experience of our senior management
team, and we depend on their continued services in order to successfully
implement our business strategy. Although we have entered into employment
agreements with Thomas L. Kemp, Daniel J. Ramella and other management members,
they and other key personnel may not remain in our employment. The loss of key
personnel could have a material adverse effect on our business, results of
operations, and financial condition. We do not maintain "key person" life
insurance with respect to our senior management team.


COMPETITION MAY ADVERSELY AFFECT OUR EARNINGS AND RESULTS OF OPERATIONS.

         We experience intense competition for our products and services. If we
fail to compete effectively, our earnings and results of operations could be
adversely affected. We compete for readers and advertisers in the publishing
marketplace and for trade show and conference venues, sponsorships, exhibitors,
and show attendees. Because our industry is relatively easy to enter, we
anticipate that additional competitors, some of whom may have greater resources
than we do, may enter these markets and intensify competition.


OUR OVERALL OPERATIONS MAY BE ADVERSELY AFFECTED BY RISKS ASSOCIATED WITH
INTERNATIONAL OPERATIONS.

         We have operations outside the United States and we intend to expand
further into international markets. The following risks in international markets
could have a material adverse effect on our future international operations and,
consequently, on our business, results of operations, and financial condition:

          -    the uncertainty of product acceptance by different cultures;

          -    the risks of divergent business expectations or cultural
               incompatibility inherent in establishing joint ventures with
               foreign partners;

          -    difficulties in staffing and managing multi-national operations;

          -    currency fluctuations;

          -    general economic and political uncertainties and potential for
               social unrest;

          -    limitations on our ability to enforce legal rights and remedies;

          -    reduced protection for intellectual property rights in some
               countries;

          -    state-imposed restrictions on the repatriation of funds; and

          -    potentially adverse tax consequences.


NEW PRODUCT LAUNCHES OR ACQUIRED PRODUCTS MAY REDUCE OUR EARNINGS OR GENERATE
LOSSES.

         Our future success will depend in part on our ability to continue
offering new products that successfully gain market acceptance by addressing the
needs of specific audience groups within our targeted industries. Our efforts to
introduce new or integrate acquired products may not be successful or
profitable. The process of internally researching and developing, launching,
gaining acceptance, and establishing profitability for a new product, or
assimilating and marketing an acquired product, is both risky and costly. New
products generally incur initial operating losses.

         In addition, we have invested in, and intend to continue to invest in,
the development of various online media products. The Internet is still not
proven as a profitable commercial medium. These products may not be successful
or profitable. In 2001, we wrote off $1.7 million of assets related to online
media initiatives.

         Costs related to the development of new products are expensed as
incurred and, accordingly, our profitability from year to year may be adversely
affected by the number and timing of new product launches.



                                       8



THE INFRINGEMENT OR INVALIDATION OF OUR PROPRIETARY RIGHTS COULD HAVE AN ADVERSE
EFFECT ON OUR BUSINESS.

         We regard our copyrights and trademarks, including our Internet domain
names, service marks, and similar intellectual property, as critical to our
success. We rely on copyright and trademark laws in the United States and other
jurisdictions and on confidentiality agreements with some of our employees and
others to protect our proprietary rights. If any of these rights were infringed
or invalidated, our business could be adversely affected. In addition, our
business activities could infringe upon the proprietary rights of others, who
could assert infringement claims against us. If we are forced to defend against
any such claims, whether they are with or without merit or are determined in our
favor, then we may face costly litigation, diversion of technical and management
personnel, or product and service delays. As a result of such a dispute, we may
have to develop non-infringing technology or enter into royalty or licensing
agreements. Such royalty or licensing agreements, if required, may be
unavailable on terms acceptable to us, or at all. If there is a successful claim
of infringement against us and we are unable to develop non-infringing
technology or enter into royalty or licensing agreements on a timely basis, our
business could be adversely affected.

         We seek to register our trademarks in the United States and elsewhere.
These registrations could be challenged by others or invalidated through
administrative process or litigation. In addition, our confidentiality
agreements with some of our employees or others may not provide adequate
protection of our proprietary rights in the event of unauthorized use or
disclosure of our proprietary information or if our proprietary information
otherwise becomes known, or is independently developed, by competitors.


RELIANCE ON PRINCIPAL VENDORS COULD ADVERSELY AFFECT OUR BUSINESS.

         We rely on our principal vendors and their ability or willingness to
sell products to us on favorable price and other terms. Many factors outside our
control may harm these relationships and the ability or willingness of these
vendors to sell these products to us on such terms. Currently, our principal
vendors are paper suppliers, the United States Postal Service, and printing
suppliers. If any of our principal vendors discontinues or temporarily
terminates its services and we are unable to find adequate alternatives, we may
experience increased prices, interruptions, and delays in services. These
factors could adversely affect our business.


INCREASES IN PAPER OR POSTAGE COSTS COULD CAUSE OUR EXPENSES TO INCREASE AND MAY
ADVERSELY AFFECT OUR BUSINESS.

         Paper and postage are necessary expenses relating to our print
products, magazine distribution, and direct mail solicitations. In 2001, these
expenses accounted for approximately 3.5% and 5.0%, respectively, of our total
operating expenses, excluding unusual items. In the first quarter of 2002, these
expenses accounted for approximately 3.6% and 5.7% of our total operating
expenses, excluding unusual items. Significant increases in paper prices, which
have been volatile in recent years, or in postage prices may have an adverse
effect on our business. We do not use forward contracts and all of our paper
supply vendor arrangements provide for price adjustments on a quarterly basis to
reflect then-prevailing market prices. We use the United States Postal Service
for domestic distribution of substantially all of our magazines and marketing
materials.


WE MAY BE SUBJECT TO CONTINGENT TAX LIABILITY RELATED TO THE SPINOFF OF OUR
COMMON STOCK BY PITTWAY.

         In connection with the tax-free spinoff of our common stock by Pittway
to its stockholders in August 1998, we agreed not to take any action that would
cause the spinoff to be taxable to Pittway under section 355 of the Internal
Revenue Code, and to indemnify Pittway for any liability suffered by it in that
event. The spinoff would be taxable to Pittway if, as part of a plan or series
of related transactions, as determined under a facts and circumstances test, one
or more persons, acting independently or in concert, have acquired 50.0% or more
of our common stock. Since August 1998, our common stock has been involved in a
number of transactions. Because of the open-ended nature of the facts and
circumstances test, we believe, but we cannot assure you, that the Internal
Revenue Service could not successfully assert that one or more transactions
involving our common stock were part of a plan or series of related transactions
that has caused the spinoff to be taxable to Pittway. If the spinoff were
taxable to Pittway, our payment to Pittway under our indemnity agreement could
have a material adverse effect on our financial condition.



                                       9



WE MAY LOSE CONTROL OF OUR BOARD.

         The terms of the convertible preferred stock entitle the holders
thereof initially to three board seats. However, at such time as the holders of
convertible preferred stock cease to hold shares of convertible preferred stock
having an aggregate liquidation preference of at least $25.0 million, they will
lose the right to appoint the director for one of these three board seats.

         Upon the occurrence of the following events, the holders of a majority
of the convertible preferred stock may nominate two additional members to our
board of directors and, if such triggering events have not been cured or waived
prior to the end of the next succeeding quarter, may appoint one less than a
minimum majority of our board of directors:

          -    Failure to comply with certain specified covenants and
               obligations contained in the convertible preferred stock
               certificate of designations or purchase agreement and such
               failure is not cured within 90 days;

          -    Any representation or warranty in the convertible preferred stock
               purchase agreement is proven to be false or incorrect in any
               material respect; and

          -    Any default that results in the acceleration of indebtedness,
               where the principal amount of such indebtedness, when added to
               the principal amount of all other indebtedness then in default,
               exceeds $5.0 million or final judgments for the payment of money
               aggregating more than $1.0 million (net of insurance proceeds)
               are entered against us and are not discharged, dismissed, or
               stayed pending appeal within 90 days after entry.

         Upon the occurrence of the following events, the holders of a majority
of the convertible preferred stock may appoint one less than a minimum majority
of our board of directors:

          -    Failure to pay the liquidation preference or any cash dividends,
               to the extent declared, when due; and

          -    Failure to comply with certain specified covenants and
               obligations contained in the convertible preferred stock
               certificate of designations or purchase agreement.

         Upon the occurrence of the following event, the holders of a majority
of the convertible preferred stock may appoint a minimum majority of our board
of directors:

          -    We initiate or consent to proceedings under any applicable
               bankruptcy, insolvency, composition, or other similar laws or
               make a conveyance or assignment for the benefit of our creditors
               generally or any holders of any lien takes possession of, or a
               receiver, administrator, or other similar officer is appointed
               for, all or substantially all of our properties, assets or
               revenues and is not discharged within 90 days.

         On March 19, 2008, the holders of a majority of the convertible
preferred stock then outstanding, if any, will be entitled to appoint one less
than a minimum majority of our board of directors, subject to the right to
appoint a minimum majority of our board of directors as described in the
immediately preceding paragraph.

         At such time as the holders of convertible preferred stock cease to
hold shares of convertible preferred stock having an aggregate liquidation
preference of at least $10.0 million and such holders' beneficial ownership of
our convertible preferred stock and common stock constitutes less than 5% of the
aggregate voting power of our voting securities, the holders of convertible
preferred stock will no longer have the right to any directors.



                                       10



TAKEOVER DEFENSE PROVISIONS MAY ADVERSELY AFFECT THE MARKET PRICE OF OUR COMMON
STOCK.

         Various provisions of Delaware corporation law and of our corporate
governance documents may inhibit changes in control not approved by our Board of
Directors and may have the effect of depriving stockholders of an opportunity to
receive a premium over the prevailing market price of our common stock in the
event of an attempted hostile takeover. In addition, the existence of these
provisions may adversely affect the market price of our common stock. These
provisions include:

           -   a classified Board of Directors

           -   a prohibition of stockholder action through written
               consents;

           -   a requirement that special meetings of stockholders be
               called only by the Board of Directors;

           -   advance notice requirements for stockholder proposals and
               nominations; and

           -   availability of "blank check" preferred stock.

         In the event of a sale of the company or a change of control of the
company (as defined in our bond indentures), the holders of preferred stock will
have the right to require us to purchase all of such holder's preferred stock
for a cash purchase price equal to the liquidation preference as described
below, subject to our satisfaction of our obligations under the indentures
governing our 10 3/8% senior subordinated notes and 11 7/8% senior secured
notes. As a result of this provision, the preferred stock holders' board
representation and the voting power of the holders of the preferred stock, it
would be very difficult for another party to successfully acquire Penton
without the concurrence of the holders of a majority of the shares of preferred
stock then outstanding.

         We also have a stockholder rights plan that provides for, among other
things, distributions to our stockholders upon an actual or prospective change
in control of our company. The plan has an anti-takeover effect because a
distribution under the plan may cause a substantial dilution to a person of
group that attempts to acquire a substantial number of our shares without
approval of our Board of Directors.


                                 USE OF PROCEEDS

         We will not receive any proceeds from the sale of the shares of common
stock by the selling stockholders in this offering, but we will receive the
exercise price upon the exercise of any warrants by the selling stockholders. We
plan to use any such proceeds for working capital.


                 DESCRIPTION OF OUR PREFERRED STOCK AND WARRANTS

         In March 2002, we sold 50,000 shares of a new series of convertible
preferred stock and warrants to purchase 1.6 million shares of our common stock
for $50.0 million to a group of investors led by ABRY Mezzanine Partners, L.P.


PREFERRED STOCK

         Liquidation Preference. Upon our liquidation, dissolution or winding
up, each holder of preferred stock will be entitled to be paid in cash, before
any distribution or payment is made on our common stock, an amount per share
equal to the greater of:

          -    the liquidation value of such share, as described below, plus
               accrued and unpaid dividends (the "liquidation preference"),

          -    the amount that the holder would be entitled to receive in
               connection with a liquidation event had such holder converted the
               preferred stock, without regard to the 35% conversion limit
               described below, into shares of our common stock immediately
               prior to such liquidation event, and



                                       11



          -    the product of the number of shares of common stock into which
               such share is convertible, without regard to the 35% conversion
               limit described below, immediately prior to the liquidation event
               and the applicable minimum share price, as described in "--
               Redemption" below, as of the date of such liquidation event.

         The initial liquidation value per share of the preferred stock is
$1,000. If the preferred stock is not converted or redeemed prior to March 19,
2008, the liquidation value per share will increase to $4,570. In the event of a
sale of the company or a change of control of the company (as defined in our
indentures governing our 10 3/8% senior subordinated notes and 11 7/8% senior
secured notes), unless a holder of the preferred stock requires us to redeem its
shares as described below, such holder may require us to pay it the full
liquidation preference of its preferred stock, subject to our satisfaction of
our obligations under the indentures governing our 10 3/8% senior subordinated
notes and 11 7/8% senior secured notes.

         Dividends. From the date of issuance until March 19, 2008, the
dividends on the preferred stock will accrue daily on the sum of the then
applicable liquidation value of the preferred stock and the accrued dividends
thereon at an annual rate of 5% per annum. From and after March 19, 2008, the
dividends will accrue at a rate of 15% per annum.

         Dividends are payable semi-annually in cash only if declared by our
board of directors and approved by the holders of no less than 75% of the
preferred stock then outstanding. The provisions of our debt instruments limit
our ability to pay dividends in cash, and we have no present intention to pay
cash dividends on the preferred stock.

         Upon the occurrence of certain triggering events, the dividend rate
increases by one percentage point, with further one percentage point increases
per quarter up to a maximum increase of five percentage points if any such event
is continuing. The triggering events include:

          -    failure to pay the liquidation preference or any cash dividends,
               to the extent declared, when due;

          -    failure to comply with certain specified covenants and
               obligations contained in the preferred stock certificate of
               designations or purchase agreement;

          -    failure to comply with certain specified covenants and
               obligations contained in the preferred stock certificate of
               designations or purchase agreement and such failure is not cured
               within 90 days;

          -    any representation or warranty in the preferred stock purchase
               agreement is proven to be false or incorrect in any material
               respect;

          -    any default that results in the acceleration of indebtedness,
               where the principal amount of such indebtedness, when added to
               the principal amount of all other indebtedness then in default,
               exceeds $5.0 million or final judgments for the payment of money
               aggregating more than $1.0 million (net of insurance proceeds)
               are entered against us and are not discharged, dismissed, or
               stayed pending appeal within 90 days after entry; and

          -    we initiate or consent to proceedings under any applicable
               bankruptcy, insolvency, composition, or other similar laws or
               make a conveyance or assignment for the benefit of our creditors
               generally or any holders of any lien takes possession of, or a
               receiver, administrator, or other similar officer is appointed
               for, all or substantially all of our properties, assets or
               revenues and is not discharged within 90 days.

         Conversion. Each share of preferred stock is convertible at any time at
the holder's option into a number of shares of our common stock computed by
multiplying the number of shares of preferred stock to be converted by the
liquidation value of such shares (initially $1,000), plus accrued but unpaid
dividends thereon, divided by the conversion price. The conversion price for the
preferred stock initially is $7.61, subject to certain anti-dilution adjustments
described in the immediately following paragraph.

         Adjustments will be made to the conversion price if dilutive events
specified in the certificate of designations for the preferred stock occur
before the conversion of the preferred stock. These events include stock splits,
stock dividends and sales of common stock or securities convertible into common
stock at prices lower than either the conversion price of the preferred stock or
the volume weighted average closing share price of our common stock for the
preceding 30 trading days. If



                                       12



any of these events occur, the maximum number of shares of common stock issuable
upon conversion of the preferred stock would increase, subject to the
limitations described herein.

         The conversion price of the preferred stock will not be adjusted for an
issuance of common stock, regardless of the sales price, in the following
circumstances:

          -    subject to certain limits, related to the granting of common
               stock or options to purchase common stock to our employees
               pursuant to our stock option plans or the exercise of currently
               outstanding options;

          -    upon conversion of the preferred stock;

          -    upon exercise of the warrants;

          -    in certain situations, for consideration other than cash;

          -    subject to certain limits, to a bank or similar financial
               institution in connection with a loan or other indebtedness for
               borrowed money; or

          -    pursuant to an underwritten offering but only if the sale price
               is greater than the conversion price then in effect.

         If we fail to comply with specific covenants contained in the agreement
pursuant to which we sold the preferred stock and warrants, the conversion price
of the preferred stock will be reduced by $0.76 (adjusted for stock splits and
similar transactions). The conversion price will readjust to what it would have
been absent such breach (to the extent of any shares of preferred stock still
outstanding) once the breach is cured. In addition, no such reduction to the
conversion price will be made at any time that representatives of the holders of
preferred stock constitute a majority of our board of directors. We currently
intend to appoint representatives of the holders of preferred stock to a
majority of the board seats to avoid this reduction in the conversion price.

         Finally, if our leverage ratio exceeds 7.5 to 1.0 for any quarterly
period beginning with the quarterly period ending on December 31, 2002, and such
leverage ratio remains in excess of 7.5 to 1.0 for a period of 90 days, the
conversion price of the preferred stock will be reduced by $0.76 (adjusted for
stock splits and similar transactions). The leverage ratio means the ratio of
(1) consolidated senior securities, defined as debt less cash balances in excess
of $5.0 million plus the accreted value of the preferred stock, to (2) earnings
before interest, taxes, depreciation and amortization, or EBITDA. Thereafter,
until the leverage ratio reduces below 7.5 to 1.0, every 90 days the conversion
price will be reduced by another $0.76 (adjusted for stock splits and similar
transactions), subject to a maximum reduction not to exceed $3.80 (adjusted for
stock splits and similar transactions). The conversion price will readjust to
what it would have been absent such event (to the extent of any shares of
preferred stock still outstanding) once the leverage ratio reduces below 7.5 to
1.0. In addition, no such reduction to the conversion price will be made at any
time that representatives of the holders of preferred stock constitute a
majority of our board of directors. We currently intend to appoint
representatives of the holders of preferred stock to a majority of the board
seats to avoid this reduction in the conversion price.

         We may require the holders to convert the preferred stock into common
stock at any time provided that:

          -    no triggering event, as described in "-- Dividends" above or "--
               Registration Rights" below, has occurred and is continuing, and
               the stockholder approval has been obtained;

          -    the proposed conversion would not occur within 30 days of any
               period during which trading by our officers or directors is
               restricted by our policies or within 90 days of another
               conversion at our option;

          -    the volume weighted average closing share price of our common
               stock for the preceding 30 trading days is equal to or greater
               than the applicable minimum share price, as set forth in "--
               Redemption" below;

          -    the aggregate number of shares of our common stock issued upon
               conversion of the preferred stock at our election during any
               period of 12 consecutive weeks does not exceed 15% of the
               aggregate volume of our



                                       13



               shares traded on the New York Stock Exchange during the 12 week
               period ended on the Saturday immediately preceding the notice
               date; and

          -    the aggregate number of shares of preferred stock converted at
               any one time does not exceed 12,500 shares (adjusted for stock
               splits and similar transactions).

         Redemption. We may redeem the preferred stock at any time, in whole or
in part, provided that the redemption price is equal to the amount the holders
of preferred stock would receive on an as-converted basis assuming a common
stock share price equal to the greater of the volume weighted average closing
share price of our common stock for the preceding 30 trading days and the
applicable minimum share price derived from the following schedule (as the same
may be adjusted for stock splits and similar transactions):



                                                                                           
         -     If being redeemed prior to the third anniversary                               $15.18
         -     If being redeemed after the third, but before the fourth anniversary           $17.51
         -     If being redeemed after the fourth, but before the fifth anniversary           $19.31
         -     If being redeemed after the fifth, but before the sixth anniversary            $23.26


         In the event of a sale of the company or a change of control of the
company (as defined in our indentures governing our 10 3/8% senior subordinated
notes and 11 7/8% senior secured notes), any holder of preferred stock may
require us to pay it the full redemption price as determined above for its
preferred stock, subject to our satisfaction of our obligations under the
indentures governing our 10 3/8% senior subordinated notes and 11 7/8% senior
secured notes.

         Board Representation. The terms of the convertible preferred stock
entitle the holders thereof initially to three board seats. However, at such
time as the holders of convertible preferred stock cease to hold shares of
convertible preferred stock having an aggregate liquidation preference of at
least $25.0 million, they will lose the right to appoint the director for one of
these three board seats.

         Upon the occurrence of the following events, the holders of a majority
of the convertible preferred stock may nominate two additional members to our
board of directors and, if such triggering events have not been cured or waived
prior to the end of the next succeeding quarter, may appoint one less than a
minimum majority of our board of directors:

          -    Failure to comply with certain specified covenants and
               obligations contained in the convertible preferred stock
               certificate of designations or purchase agreement and such
               failure is not cured within 90 days;

          -    Any representation or warranty in the convertible preferred stock
               purchase agreement is proven to be false or incorrect in any
               material respect; and

          -    Any default that results in the acceleration of indebtedness,
               where the principal amount of such indebtedness, when added to
               the principal amount of all other indebtedness then in default,
               exceeds $5.0 million or final judgments for the payment of money
               aggregating more than $1.0 million (net of insurance proceeds)
               are entered against us and are not discharged, dismissed, or
               stayed pending appeal within 90 days after entry.

         Upon the occurrence of the following events, the holders of a majority
of the convertible preferred stock may appoint one less than a minimum majority
of our board of directors:

          -    Failure to pay the liquidation preference or any cash dividends,
               to the extent declared, when due; and

          -    Failure to comply with certain specified covenants and
               obligations contained in the convertible preferred stock
               certificate of designations or purchase agreement.

         Upon the occurrence of the following event, the holders of a majority
of the convertible preferred stock may appoint a minimum majority of our board
of directors:



                                       14



          -    We initiate or consent to proceedings under any applicable
               bankruptcy, insolvency, composition, or other similar laws or
               make a conveyance or assignment for the benefit of our creditors
               generally or any holders of any lien takes possession of, or a
               receiver, administrator, or other similar officer is appointed
               for, all or substantially all of our properties, assets or
               revenues and is not discharged within 90 days.

         On March 19, 2008, the holders of a majority of the convertible
preferred stock then outstanding, if any, will be entitled to appoint one less
than a minimum majority of our board of directors, subject to the right to
appoint a minimum majority of our board of directors as described in the
immediately preceding paragraph.

         At such time as the holders of convertible preferred stock cease to
hold shares of convertible preferred stock having an aggregate liquidation
preference of at least $10.0 million and such holders' beneficial ownership of
our convertible preferred stock and common stock constitutes less than 5% of the
aggregate voting power of our voting securities, the holders of convertible
preferred stock will no longer have the right to any directors.

         We have also granted the holders of the preferred stock the right to
have representatives attend meetings of our board of directors until such time
as they no longer own any preferred stock, warrants or shares of common stock
issued upon conversion of the preferred stock and exercise of the warrants.

         Voting Rights. Subject to the 35% voting limitation described below,
the holders of the preferred stock are entitled to vote on all matters submitted
to the vote of our stockholders, voting as a single class with the common
stockholders on an as-converted basis. In addition, we may not, without the
affirmative vote of the holders of not less than 75% of the preferred stock then
outstanding:

          -    amend, modify, restate, or repeal our certificate of
               incorporation or bylaws in any way that would alter the rights of
               the preferred stock or create any new class of capital stock
               having rights senior to or on parity with the preferred stock;

          -    authorize or issue any new or existing class of capital stock or
               any security convertible into or exchangeable for, or having
               rights to purchase, any shares of our stock having any preference
               or priority senior to or on parity with the preferred stock;

          -    increase or decrease the authorized number of shares of preferred
               stock;

          -    reclassify our capital stock into shares having any preference or
               priority senior to or on parity with any preference or priority
               of the preferred stock;

          -    pay or declare any dividend on any shares of our capital stock
               (other than dividends on our common stock payable in additional
               shares of our common stock) or apply any of our assets to the
               redemption, retirement, purchase, or acquisition, directly or
               indirectly, of any shares of our capital stock, other than
               redemptions of the preferred stock and certain repurchases of
               shares of common stock from our current or former employees
               pursuant to contractual rights; or

          -    increase the size of our board of directors to more than 12
               directors, other than as may be required to satisfy the rights of
               the preferred stock described above.

         Covenants. Without the prior approval of the holders of a majority of
the shares of preferred stock then outstanding we may not:

          -    use the proceeds from the sale of the preferred stock and
               warrants other than to refinance our credit facility and for
               general corporate purposes;

          -    make any restricted payment or restricted investment unless our
               leverage ratio is less than 6.0 to 1.0 and such restricted
               payment or restricted investment would otherwise be permitted
               under the indenture governing the 103/8% senior subordinated
               notes after the application of a deemed restricted payment in an
               amount equal to the aggregate liquidation value of the preferred
               stock then outstanding;



                                       15



          -    enter into any agreement (or amend or modify the terms of any
               existing agreement), other than our credit facility, the
               indentures governing the 10 3/8% senior subordinated notes and
               11 7/8% senior secured notes, or any refinancing thereof to the
               extent the terms of such refinancing are not more restrictive
               than the credit facility or indentures, as applicable, which by
               its terms would restrict our ability to comply with the
               agreements related to the preferred stock;

          -    prior to the sixth anniversary of the issuance date, sell any of
               our assets, including the capital stock of our subsidiaries,
               unless such sale is in the ordinary course of business, does not
               exceed 5% of our total assets or EBITDA or, in the case of a sale
               of the capital stock of our subsidiaries, is between us or any of
               our wholly owned subsidiaries and another of our wholly owned
               subsidiaries;

          -    prior to the sixth anniversary of the issuance date, enter into
               any agreement with any affiliate (other than certain permitted
               affiliate transactions), unless such affiliate transaction is
               determined by a majority of our board of directors to be fair,
               reasonable and no less favorable to us than could have been
               obtained in an arm's length transaction with a non-affiliate and
               is approved by a majority of the disinterested members of our
               board of directors;

          -    materially alter our principal line of business or engage in any
               business unless such business is reasonably related to our
               principal line of business;

          -    grant any options to purchase our common stock or securities
               convertible into or exchangeable for shares of our common stock,
               other than options or securities granted pursuant to a stock
               option plan having an exercise price equal to or greater than the
               market value of our common stock on the date of such grant and
               accounting for, either individually or in the aggregate, not more
               than 15% of our outstanding common stock determined as of the day
               before the closing on a fully diluted, as-converted basis; or

          -    increase the size of our board of directors to greater than 12
               directors.

         From and after the sixth anniversary of the issuance date, in addition
to any of the actions described in the first, second, third, sixth, seventh and
eighth bullet points above, we may not, without the prior approval of the
holders of a majority of the shares of preferred stock then outstanding:

          -    sell any of our assets, including the capital stock of our
               subsidiaries;

          -    enter into any agreement with any affiliate;

          -    incur or permit to exist any indebtedness other than indebtedness
               existing as of such date and indebtedness incurred thereafter
               under the revolving credit facility in the ordinary course of
               business to provide for our working capital needs;

          -    acquire (by merging or consolidating with, or by purchasing an
               equity interest in or a portion of the assets of) any business,
               corporation, other business organization, or division thereof or
               otherwise acquire any material assets (other than inventory or
               other assets to be sold in the ordinary course of business); and

          -    hire or terminate any of our executive officers or modify or
               alter in any way the employment terms relating to any of our
               executive officers.

         In addition, the terms of the preferred stock require that we maintain
a ratio of consolidated senior securities, defined as debt less cash balances in
excess of $5.0 million plus the accreted value of the preferred stock, to EBITDA
of 7.5 to 1.0 for the twelve month period ending on the last day of December,
March, June, and September of each year beginning with the twelve month period
ending on December 31, 2002.



                                       16



         Sales Rights. If, beginning with the quarterly period ending on
December 31, 2002, our leverage ratio, as described above, exceeds 7.5 to 1.0
for four consecutive fiscal quarters, then the holders of a majority of the
preferred stock have the right to cause us to seek a buyer for all of our assets
or all of our issued and outstanding capital stock. The holders of preferred
stock will not have this right if their representatives constitute a majority of
our board of directors. We currently intend to appoint representatives of the
holders of preferred stock to a majority of the board seats to avoid their
having this right.

         In addition, beginning on March 19, 2008, the holders of the preferred
stock will have the right to cause us to seek a buyer for substantially all of
our assets or issued and outstanding capital stock if at least 3,500 shares of
preferred stock (adjusted for stock splits and similar transactions) are then
outstanding.

         Preemptive Rights. Subject to specified limitations, the holders of the
preferred stock may participate in our future issuances of equity securities,
options or rights to acquire equity securities, or any securities convertible or
exchangeable for equity securities.

         Registration Rights. The agreements regarding the preferred stock
provide that we will file a shelf registration statement with the SEC covering
the common stock issued or issuable upon conversion of the preferred stock and
exercise of the warrants by May 3, 2002 and use our reasonable best efforts to
have the registration statement declared effective by the SEC as soon as
possible, but in any event not later than July 11, 2002. We filed the
registration statement on April 12, 2002, and it was declared effective on July
11, 2002. If the registration statement ceases to be effective at any time prior
to the sale of all of the common stock covered by that registration statement,
the dividend rate will increase by one percentage point. This prospectus is a
part of the shelf registration statement that satisfies our obligations under
the registration rights of the holders of preferred stock. We have also granted
the holders of the preferred stock "piggyback" registration rights pursuant to a
registration rights agreement with those holders. These rights entitle the
holders to notice of the registration and to include, at our expense, their
shares of common stock in many of our registrations of our common stock.

         Indemnification Rights. We have agreed to indemnify the holders of the
preferred stock for any losses suffered by them as a result of a breach of a
warranty, representation, promise, agreement or covenant relating to their
purchase of the preferred stock and warrants, the execution, delivery,
performance or enforcement of the documents relating to such purchase or the
amendment to the terms of the preferred stock to remove the scheduled redemption
date.

         Limitations on the Rights of the Holders to Convert, Exercise, Vote or
Sell. The rights of each holder of preferred stock and the related warrants to
convert its shares of preferred stock, exercise its warrants, or sell shares of
its common stock acquired pursuant to any conversion or exercise are subject to
certain limitations, including:

          -    So long as any of our 10 3/8% senior subordinated notes or
               11 7/8% senior secured notes are outstanding, no holder of
               preferred stock or warrants may convert its preferred stock or
               exercise its warrants to the extent that, after giving effect to
               such conversion or exercise, such holder of preferred stock,
               individually or collectively with all other holders of preferred
               stock are entitled to direct the votes with respect to an excess
               of 35% of the aggregate voting equity interests. Collectively,
               the holders of the preferred stock and warrants are similarly
               limited to 35% of the aggregate voting power outstanding.


          -    If any holder of preferred stock or warrants intends to convert
               its preferred stock, intends to exercise its warrants or intends
               to sell in a public sale any shares of common stock acquired
               through such conversion or exercise to one or more third parties
               when the market price of the common stock is below the applicable
               prices listed on the schedule set forth under "-- Redemption"
               above, the holder must notify each of the other holders of
               preferred stock or warrants of such intention. The other holders
               may then elect to participate, on a pro rata basis, in such
               conversion, exercise or sale based on the number of shares of
               common stock held by the holders electing to participate in such
               conversion, exercise or sale.

          -    The purchasers of the preferred stock have agreed among
               themselves that if they intend to sell more than 10,000 shares of
               preferred stock (adjusted for stock splits and similar
               transactions) to one or more third parties, the party intending
               such a sale must notify the other holders of preferred stock of
               such intention. Upon receipt of such notice, the other holders
               may then elect to participate, on identical terms and on a pro
               rata basis, in such sale based on the number of shares of
               preferred stock held by the holders electing to participate in
               such sale.



                                       17




         Accounting Treatment. In April 2002, we reached an agreement with the
preferred stockholders to eliminate the scheduled ten year redemption date of
the preferred stock and on May 31, 2002, stockholders approved an amendment to
the Certificate of Designation to remove the scheduled redemption feature. In
exchange for removing the scheduled redemption date, we agreed to grant the
holders of the preferred stock the right to require us to seek a buyer for
substantially all of our assets or issued and outstanding capital stock
beginning on March 19, 2008. We sought the amendment to eliminate the
requirement to accrete the preferred stock to the maximum possible redemption
amount by such date. However, we did not seek to eliminate the preferred
stockholders' right to require us to redeem the security upon the occurrence
of certain contingent events, including a change in control or liquidation,
dissolution or winding up of Penton. To the extent that redemption of the
preferred stock becomes probable in the future pursuant to a contingent
redemption provision of the preferred stock, accretion to the maximum
redemption amount will be required at such time. Before stockholder approval on
May 31, 2002 to remove the scheduled redemption date, we had to accrete, using
the interest method, a portion of the maximum liquidation preference at
maturity. In addition, certain features of the preferred stock had to be
accounted for as embedded derivatives, which required mark to market accounting
that could have potentially resulted in significant swings in our net income
and our earnings per share.

         As a result of stockholder approvals on May 31, 2002, accretion is no
longer required and approximately $42.1 million of unamortized beneficial
conversion feature will be recognized immediately as a charge to retained
earnings and as a reduction of income available to common stockholders
in the Statement of Operations. In addition, mark to market accounting for the
embedded derivatives is no longer required subsequent to May 31, 2002.

         Even without the scheduled redemption feature, however, any accrued
dividends on the preferred stock will still be reflected as a reduction in
earnings per share available to common stockholders.


WARRANTS

         The initial exercise price of the warrants is $7.61 per share. The
warrants are subject to anti-dilution and other adjustments that mirror those
applicable to the convertible preferred stock. The warrants are immediately
exercisable and expire 10 years after issuance.


CLOSING FEES AND OTHER PAYMENTS

         In connection with the closing of the sale of our preferred stock and
related warrants, we paid the purchasers $750,000, or 1.5% of the purchase
price.


                              SELLING STOCKHOLDERS

         In March 2002, we sold 50,000 shares of a new series of convertible
preferred stock and warrants to purchase 1.6 million shares of our common stock
for $50 million to the selling stockholders named below. The shares of our
common stock registered for resale in the registration statement, of which this
prospectus is a part, are the shares into which the preferred stock is
convertible and the warrants are exercisable. In addition, pursuant to Rule 416
under the Securities Act of 1933, this prospectus relates to the resale of such
indeterminate number of shares of our common stock as may be issued or become
issuable in accordance with the terms of the preferred stock and the warrants
to prevent dilution resulting from stock splits, stock dividends or similar
transactions. The registration statement, however, shall not be deemed to cover
any additional shares of common stock to be issued because of changes in the
conversion price of the preferred stock or the exercise price of the warrants
or other unique features of the terms of our preferred stock and related
warrants.

         The number of shares registered in the registration statement of which
this prospectus is a part and the number of shares offered in this prospectus
represents our bona fide estimate of the number of shares issuable upon
conversion of the convertible preferred stock and exercise of the warrants. We
may have to register additional shares if our bona fide estimate is low for any
of the reasons set forth in the following sentence. The number of shares that
will ultimately be issued to the selling stockholders cannot be determined at
this time because it depends on: (1) whether the holders of the preferred stock
elect to convert the preferred stock into shares of common stock; (2) whether
we elect to require the conversion of the preferred stock if certain conditions
are met; (3) whether the holders of the warrants exercise their warrants; (4)
the conversion price of the preferred stock and the exercise price of the
warrants at the time of conversion of the preferred stock and exercise of the
warrants; (5) the period for which the preferred stock remains outstanding; and
(6) the amount of dividends that accrue to the liquidation preference of the
preferred stock before conversion.

         The table below sets forth information regarding ownership of our
common stock by the selling stockholders and the number of shares that may be
sold by them under this prospectus. The number of shares set forth in the table
as being held by the selling stockholders and the number of shares set forth on
the table as being offered hereby represent the total number of


                                       18



shares we have registered for resale by the selling stockholders based on our
bona fide estimate of the number of shares of common stock that we will need to
issue to the selling stockholders on conversion of the preferred stock and
exercise of the warrants (subject, in each case, to antidilution adjustments)
and payment of all dividends on the preferred stock. However, the actual number
of shares of common stock issuable upon conversion of the preferred stock and
exercise of the warrants is indeterminable, and could be materially more or less
than the amounts listed on the table due to possible conversion and exercise
price adjustments. Because the selling stockholders may offer all or some
portion of the common stock listed in the table pursuant to this prospectus or
otherwise, no estimate can be given as to the amount of common stock that will
be held by the selling stockholders upon termination of the offering. The
selling stockholders may sell all, part, or none of the shares listed. The
number of shares owned by the selling stockholders is determined by rules
promulgated by the Commission for beneficial ownership and is not necessarily
indicative of ownership for any other purpose.

         None of the selling stockholders has had any position, office or other
material relationship with us, other than as a security holder, during the past
three years; however, the terms of our preferred stock grant the holders of the
preferred stock the right to appoint three directors to our board. See
"Description of Preferred Stock and Warrants; Preferred Stock -- Board
Representation" above. Two of these directors are affiliated with ABRY Mezzanine
Partners, L.P. and the third is affiliated with the Sandler entities listed
below.



                                                                                                          Percentage of shares
                                                       Shares         Shares of Common       Shares        of Common Stock to
                                                    Owned Prior        Stock Offered       Owned After       be owned after
Name of Selling Shareholder                         To Offering            Hereby           Offering            Offering
--------------------------------------------------------------------------------------------------------------------------------
                                                                                                       
ABRY Mezzanine Partners, L.P.(1)                    5,322,809(2)         5,322,809              0                   0%

ABACUS Master Fund, Ltd.(3)                           887,135(4)           887,135              0                   0

Sandler Capital Partners V, L.P.(5)                 1,898,291(6)         1,898,291              0                   0

Sandler Capital Partners V FTE, L.P.(5)               693,385(7)           693,385              0                   0

Sandler Capital Partners V Germany, L.P.(5)            69,729(8)            69,729              0                   0



--------

(1)  ABRY Mezzanine Investors, L.P. is the general partner of ABRY Mezzanine
     Partners, L.P. ABRY Mezzanine Holdings, LLC is the general partner of ABRY
     Mezzanine Investors, L.P. Royce Yudkoff is the controlling member of ABRY
     Mezzanine Holdings, LLC.

(2)  Includes 3,942,181 shares issuable upon conversion of 30,000 shares of
     preferred stock based on a conversion price of $7.61 per share, 960,000
     shares issuable upon the exercise of warrants and 420,628 shares that may
     be issued upon conversion of the preferred stock as dividends accrue to the
     liquidation preference over the next two years.

(3)  Paradigm, Ltd. is the investment manager of ABACUS Master Fund, Ltd.
     ("ABACUS Master Fund"), and, as such, exercises investment discretion with
     respect to the securities held by ABACUS Master Fund. Andrew Banks is the
     President and controlling shareholder of Paradigm, Ltd.

(4)  Includes 657,030 shares issuable upon conversion of 5,000 shares of
     preferred stock based on a conversion price of $7.61 per share, 160,000
     shares issuable upon the exercise of warrants and 70,105 shares that may be
     issued upon conversion of the preferred stock as dividends accrue to the
     liquidation preference over the next two years.

(5)  Sandler Investment Partners, L.P. is the general partner of each of Sandler
     Capital Partners V, L.P., Sandler Capital Partners V FTE, L.P. and Sandler
     Capital Partners V Germany, L.P. Sandler Capital Management is the general
     partner of Sandler Investment Partners, L.P. The eleven general partners of
     Sandler Capital Management and each of their controlling persons are set
     forth in the following table:



                                       19



               Name of General Partner of Sandler
               Capital Management, L.P.                     Controlling Person
               ----------------------------------           ------------------

               MJDM Corp.                                   Michael Marocco

               Four JK Corp.                                John Kornreich

               ALCR Corp.                                   Andrew Sandler

               ARH Corp.                                    Harvey Sandler

               TERPSI Corp.                                 Hannah Stone

               SERF Corp.                                   Douglas Schimmel

               RAK SCM Corp.                                Richard Keller

               RF SCM Corp.                                 Robert Fowler

               SAM SCM Corp.                                Samantha McCuen

               DRP SCM Corp.                                David Powers

               WAB SCM Corp.                                William Bianco


(6)  Includes 1,405,913 shares issuable upon conversion of 10,699 shares of
     preferred stock based on a conversion price of $7.61 per share, 342,368
     shares issuable upon the exercise of warrants and 150,010 shares that may
     be issued upon conversion of the preferred stock as dividends accrue to the
     liquidation preference over the next two years.

(7)  Includes 513,535 shares issuable upon conversion of 3,908 shares of
     preferred stock based on a conversion price of $7.61 per share, 125,056
     shares issuable upon the exercise of warrants and 54,794 shares that may be
     issued upon conversion of the preferred stock as dividends accrue to the
     liquidation preference over the next two years.

(8)  Includes 51,643 shares issuable upon conversion of 393 shares of preferred
     stock based on a conversion price of $7.61 per share, plus 12,576 shares
     issuable upon the exercise of warrants and 5,510 shares that may be issued
     upon conversion of the preferred stock as dividends accrue to the
     liquidation preference over the next two years.


                              PLAN OF DISTRIBUTION

         We are registering shares of common stock issuable upon conversion of
the preferred stock and upon exercise of the warrants to permit the resale of
these shares of common stock by the holders of the preferred stock and warrants
from time to time after the date of this prospectus. We will not receive any of
the proceeds from the sale by the selling stockholders of the shares of common
stock, although we will receive the exercise price if any of the warrants are
exercised. We will bear all fees and expenses incident to our obligation to
register the shares of common stock.

         The selling stockholders may sell all or a portion of the common stock
beneficially owned by them and offered through the prospectus from time to time
directly or through one or more underwriters, broker-dealers or agents. If the
common stock is sold through underwriters or broker-dealers, the selling
stockholder will be responsible for underwriting discounts or commissions or
agent's commissions. The common stock may be sold in one or more transactions or
other legally available means at fixed prices, at prevailing market prices at
the time of the sale, at varying prices determined at the time of sale, or at
negotiated prices. These sales may be effected in the following types of
transactions:

     -    on any national securities exchange or quotation service on which the
          securities may be listed or quoted at the time of sale, including The
          New York Stock Exchange in the case of the shares of common stock;

     -    in the over-the-counter market;

     -    in transactions otherwise than on these exchanges or systems or in the
          over-the-counter market; or

     -    through the writing of options.

         These transaction may include block transactions or crosses. Crosses
are transactions in which the same broker acts as an agent on both sides of the
trade.



                                       20




         In connection with sales of the common stock or otherwise, the selling
stockholders may enter into hedging transactions with broker-dealers that may in
turn engage in short sales of common stock in the course of hedging in positions
they assume. The selling stockholders may also sell shares of common stock short
and deliver shares of common stock to close short positions, or loan or pledge
shares of common stock to broker-dealers that in turn may sell those shares. If
the selling stockholders effect such transactions by selling shares of common
stock to or through underwriters, broker-dealers or agents, those underwriters,
broker-dealers or agents may receive commissions in the form of discounts,
concessions or commissions from the selling stockholders or commissions from the
purchasers of the shares of common stock for whom they may act as agent or to
whom they may sell as principal, which discounts, concessions or commissions as
to particular underwriters, broker-dealers or agents may be in excess of those
customary in the types of transactions involved.

         The selling stockholders may from time to time pledge or grant a
security interest in some or all of the shares of preferred stock or common
stock owned by them. If the selling stockholders default in the performance of
their secured obligations, the pledgees or secured parties may offer and sell
the shares of common stock from time to time under this prospectus or an
amendment to this prospectus under Rule 424(b)(3) or other applicable provision
of the Securities Act amending the list of selling stockholders to include the
pledgee, transferee or other successors in interest as selling stockholders
under this prospectus.

         The selling stockholders and any broker-dealer participating in this
distribution of shares of common stock may be deemed to be "underwriters" within
the meaning of the Securities Act, and any commission paid, or any discounts
allowed to the broker-dealer may be deemed to be underwriting discounts or
commissions under the Securities Act. At the time a particular offering of the
shares of common stock is made, a prospectus supplement, if required, will be
distributed which will set forth the aggregate amount of shares of common stock
being offered and the terms of the offering, including the name or names of any
broker-dealers or agents, any discounts, commissions and other terms
constituting compensation from the selling stockholder and any discounts,
commissions or concessions allowed or reallowed or paid to broker-dealers.

         Under the securities laws of some states, the shares of common stock
may be sold in such states only through registered or licenses brokers or
dealers. In addition, in some states the shares of common stock may not be sold
unless the shares have been registered or qualified for sale in the state of an
exemption from registration or qualification is available and is complied with.

         We do not know whether any selling stockholder will sell any or all of
the shares of common stock registered by the shelf registration statement of
which this prospectus forms a part.

         We will pay all expenses of the registration of the shares of common
stock under the registration rights agreement, including SEC filing fees and
expenses of compliance with state securities or "blue sky" laws, except that the
selling stockholders will pay any underwriting discounts and selling
commissions. We expect that our expenses for this offering, including primarily
filing fees and legal expenses, will be approximately $20,000.

         We will indemnify the selling stockholders against liabilities,
including some liabilities under the Securities Act, in accordance with the
registration rights agreement. We will be indemnified by the selling
stockholders against civil liabilities, including liabilities under the
Securities Act, that may arise from any written information furnished to us by
the selling stockholders for use in this prospectus, in accordance with the
related registration rights agreement.

         Once sold under the shelf registration statement, of which this
prospectus forms a part, the shares of common stock will be freely tradable in
the hands of persons other than our affiliates.


                                  LEGAL MATTERS

         The validity of the issuance of the shares offered by this prospectus
will be passed upon for Penton by Jones, Day, Reavis & Pogue, Cleveland, Ohio.


                                     EXPERTS

         The consolidated financial statements of Penton incorporated in this
prospectus by reference to the Annual Report on Form 10-K for the year ended
December 31, 2001, have been so incorporated in reliance on the report of



                                       21



PricewaterhouseCoopers LLP, independent accountants, given on the authority of
said firm as experts in auditing and accounting.




                                       22