Penton Media Inc Watch

from SC 13D/A 1 page Schedule II Information With Respect to Transactions Effected During the Past Sixty Days or Since the Most Recent Filing on Schedule 13d (1) Shares Purchased Average Date Sold(-) Price(2) Common Stock-Penton Media, Inc. Mario J. Gabelli 2/01/07 24,734- .8058 Mjg Associates, Inc. Gabelli International Ltd 2/01/07 130,000- .8058 Gamco Asset Management Inc. 2/01/07 1,643,355- .8058 1/17/07 6,000- .7800 1/17/07 10,000 .7850 1/04/07 21,500- .7740 1/03/07 3,300 .7630 12/26/06 2,000- .7600 12/06/06 14,400- .7350 Gabelli Securities, Inc. Gabelli Associates Ltd 2/01/07 185,114- .8058 1/22/07 15,000 .7800 1/16/07 20,000 .7848 1/03/07 6,000 .7630 12/21/06 4,000 .7600 12/15/06 9,000 .7611 Gabelli Associates Fund II 2/01/07 17,500- .8058 1/23/07 5,000 .7800 Gabelli Associates Fund 2/01/07 230,250- .8058 1/31/07 40,000 .7900 1/30/07 1,050 .7950 1/19/07 9,500 .7800 1/16/07 20,000 .7848 1/03/07 3,200 .7630 12/21/06 5,000 .7600 12/15/06 10,000 .7611 Gabelli Funds, LLC. Gabelli Global Multimedia Trust 2/01/07 100,000- .8058 Gabelli Equity Trust 2/01/07 200,000- .8058 Gabelli Capital Asset Fund 2/01/07 130,000- .8058 (1) the Dispositions on 02/01/07 Were in Connection With the Acquisition of the Issuer as Described in Item 5 of This Amendment to Schedule 13d. Under the Terms of the Aquisition, the Issuer's Shareholders Received $0.8058 in Cash for Each Share of Issuer's Common Stock. Unless Otherwise Indicated, All Other Transactions Were Effected on the Over-The-Counter Market. (2) Price Excludes Commission

from SC 13D/A 1 page Schedule II Information With Respect to Transactions Effected During the Past Sixty Days or Since the Most Recent Filing on Schedule 13d (1) Shares Purchased Average Date Sold(-) Price(2) Common Stock-Penton Media Inc. Gamco Asset Management Inc. 12/02/05 3,000- .5100 11/30/05 5,000- .5200 11/25/05 500- .4800 11/22/05 1,500- .5300 11/18/05 2,500- .5200 11/18/05 1,000- .5100 11/01/05 1,500- .4300 10/31/05 600- .4400 10/17/05 1,000- .4400 10/07/05 1,450- .4600 10/05/05 3,000- .4400 (1) Unless Otherwise Indicated, All Transactions Were Effected on the Otc Bb. (2) Price Excludes Commission. (*) Results in Change of Dispositive Power and Beneficial Ownership

from SC 13D/A 1 page Schedule II Information With Respect to Transactions Effected During the Past Sixty Days or Since the Most Recent Filing on Schedule 13d (1) Shares Purchased Average Date Sold(-) Price(2) Common Stock-Penton Media Inc. Gamco Investors, Inc. 5/13/05 750- .3350 5/12/05 100,589- *Do 5/11/05 17,000 .3367 5/11/05 34,000- .3367 5/05/05 10,000 .2900 5/04/05 18,200 .2900 5/03/05 500- .2500 4/29/05 10,000- .2000 4/26/05 35,000- .2465 4/25/05 20,000- .2400 4/25/05 1,500- .2900 4/22/05 9,000- .2700 4/20/05 1,650- .2300 4/15/05 2,500- .1750 4/06/05 10,000- .1650 3/29/05 10,000- .1700 3/22/05 5,000- .1600 3/22/05 16,000 .1450 3/22/05 16,000- .1450 3/22/05 28,000- .1450 3/18/05 15,000- .1900 Gabelli Funds, LLC. Gabelli Global Multimedia Trust 4/29/05 30,000- .2000 (1) Unless Otherwise Indicated, All Transactions Were Effected on the NASDAQ Bullentin Board. (2) Price Excludes Commission. (*) Results in Change of Dispositive Power and Beneficial Ownership

from SC 13D/A 1 page Schedule II Information With Respect to Transactions Effected During the Past Sixty Days or Since the Most Recent Filing on Schedule 13d (1) Shares Purchased Average Date Sold(-) Price(2) Common Stock-Penton Media Inc. Gamco Investors, Inc. 1/24/05 30,000- .0848 1/21/05 20,000- .0850 1/20/05 10,000- .0900 1/19/05 20,000- .0900 1/18/05 20,000- .0925 1/14/05 2,000- .0900 1/14/05 2,000 .0900 1/14/05 32,000- .0900 1/13/05 20,900- .0900 1/12/05 20,000- .0850 1/11/05 12,000- .0850 1/11/05 12,000- .0850 1/11/05 12,000- .0850 1/10/05 20,000- .0850 1/03/05 10,000- .0900 1/03/05 1,000- *Do 1/03/05 1,000- *Do 12/30/04 316- *Do 12/28/04 24,500- .0947 12/27/04 1,200 .0900 12/27/04 22,000- .0858 12/23/04 20,000- .1050 12/22/04 10,750- .1103 12/21/04 28,800- .1150 12/20/04 20,000- .1100 (1) Unless Otherwise Indicated, All Transactions Were Effected on the NYSE. (2) Price Excludes Commission. (*) Results in Change of Dispositive Power and Beneficial Ownership

from SC 13D/A 1 page Schedule II Information With Respect to Transactions Effected During the Past Sixty Days or Since the Most Recent Filing on Schedule 13d (1) Shares Purchased Average Date Sold(-) Price(2) Common Stock-Penton Media Inc Gamco Investors, Inc. 12/17/04 20,000- .1010 12/15/04 20,000- .1055 12/14/04 22,350- .1150 12/10/04 20,000- .1100 12/09/04 20,000- .1050 12/08/04 8,950- .1050 12/07/04 4,500- .1200 12/07/04 7,807- .1100 12/06/04 6,000- *Do 12/06/04 3,500- .1200 12/06/04 12,000- *Do 12/03/04 300- *Do 12/03/04 200- *Do 12/02/04 10,000- .1200 12/01/04 1,000- .1100 11/30/04 600- .1150 11/29/04 1,000- .1150 11/29/04 9,000- .1200 11/24/04 51,000- .1150 11/24/04 22,217- .1182 11/23/04 11,205- .1250 11/23/04 100,000- *Do (1) Unless Otherwise Indicated, All Transactions Were Effected on the NASDAQ Bulletin Board. (2) Price Excludes Commission. (*) Results in Change of Dispositive Power and Beneficial Ownership

from SC 13D/A 1 page Schedule II Information With Respect to Transactions Effected During the Past Sixty Days or Since the Most Recent Filing on Schedule 13d (1) Shares Purchased Average Date Sold(-) Price(2) Common Stock-Penton Media Inc Gamco Investors, Inc. 11/22/04 5,000- .1250 11/18/04 10,500- .1350 11/18/04 240,000- *Do 11/17/04 8,800 .1400 11/16/04 70,000 .1250 11/16/04 35,000- .1250 11/16/04 70,000 .1250 11/16/04 35,000- .1250 11/16/04 35,000 .1250 11/16/04 110,000- .1250 11/15/04 1,000- .1250 11/10/04 20,000- .1050 11/10/04 1,000- .1050 11/09/04 25,200- .0811 11/08/04 7,687- .0824 11/08/04 20,000- .0850 11/05/04 1,100- .0850 11/03/04 2,500- .0742 11/02/04 4,550- .0870 11/02/04 4,500 .1000 10/29/04 1,500- .1100 Gabelli Funds, LLC. Gabelli Equity Trust 11/12/04 100,000- .1110 (1) Unless Otherwise Indicated, All Transactions Were Effected on the NASDAQ Bullentin Board. (2) Price Excludes Commission. (*) Results in Change of Dispositive Power and Beneficial Ownership

from SC 13D/A 1 page Schedule II Information With Respect to Transactions Effected During the Past Sixty Days or Since the Most Recent Filing on Schedule 13d (1) Shares Purchased Average Date Sold(-) Price(2) Common Stock-Penton Media Inc. Gamco Investors, Inc. 10/25/04 3,500- .1100 10/22/04 7,000- .1100 10/22/04 1,200- .1050 10/21/04 10,000- *Do 10/21/04 2,000- .0950 10/18/04 500- .1250 10/18/04 340- .1300 10/15/04 1,000- .1300 10/12/04 1,800- .1400 10/11/04 225- .1500 10/07/04 18,040- .1436 10/07/04 18,040 .1436 10/07/04 18,040- .1436 10/05/04 13,800- .1500 10/05/04 20,000 .1650 10/05/04 6,000- .1650 10/05/04 21,200- .1500 10/05/04 14,000- .1650 10/04/04 1,700- .1650 10/04/04 18,300- .1650 10/01/04 28,500- .1650 9/30/04 6,000 .1600 9/30/04 6,000- .1600 9/30/04 6,000- .1600 9/27/04 19,000- .1600 9/24/04 12,500- .1850 9/24/04 9,600- .1824 9/23/04 1,200- .1800 9/22/04 14,428- .1850 9/21/04 7,500- .1950 9/21/04 40,000- .1900 9/17/04 9,000- .1900 9/16/04 15,825- .2000 9/16/04 2,000- .2100 9/16/04 2,000- .2000 9/16/04 2,000 .2000 9/16/04 2,000 .1625 9/16/04 800- .1875 9/16/04 1,200- .2000 9/16/04 18,000- .2222 9/15/04 30,000- .2150 9/15/04 20,000- *Do Gabelli Funds, LLC. Gabelli Global Multimedia Trust 10/26/04 30,000- .1050 (1) Unless Otherwise Indicated, All Transactions Were Effected on the NASDAQ Bulletin Board. (2) Price Excludes Commission. (*) Results in Change of Dispositive Power and Beneficial Ownership

from SC 13D/A 1 page Schedule II Information With Respect to Transactions Effected During the Past Sixty Days or Since the Most Recent Filing on Schedule 13d (1) Shares Purchased Average Date Sold(-) Price(2) Common Stock-Penton Media Inc. Gamco Investors, Inc. 9/14/04 20,000- .2150 9/14/04 23,500- .2157 9/14/04 12,000- .2200 9/13/04 11,500- .2150 9/13/04 85,050- .2100 9/13/04 20,000- *Do 9/10/04 3,000- .2150 9/09/04 5,550- .2000 9/08/04 5,000- .1950 9/07/04 27,100- .1956 9/03/04 5,000- .1900 9/02/04 1,000- *Do 9/01/04 3,000- .1900 8/31/04 1,000- *Do 8/31/04 10,000- .1825 8/30/04 8,000- .1850 8/27/04 2,500- .1850 8/25/04 70,000- .1800 Gabelli Funds, LLC. Gabelli Small Cap Growth Fund 9/14/04 59,000- .2150 9/07/04 1,000- .2000 Gabelli Global Multimedia Trust 9/08/04 19,800- .1975 Gabelli Equity Trust 9/03/04 24,500- .1900 (1) Unless Otherwise Indicated, All Transactions Were Effected on the NASDAQ Bulletin Board. (2) Price Excludes Commission. (*) Results in Change of Dispositive Power and Beneficial Ownership

from SC 13D/A 1 page Schedule II Information With Respect to Transactions Effected During the Past Sixty Days or Since the Most Recent Filing on Schedule 13d (1) Shares Purchased Average Date Sold(-) Price(2) Common Stock-Penton Media Inc. Mjg Associates, Inc. Gabelli International Ltd 7/19/04 20,000- .3150 Gamco Investors, Inc. 8/24/04 20,000- .1500 8/24/04 30,000- .1800 8/24/04 8,000- .1675 8/23/04 30,000- .1800 8/19/04 2,500- .2400 8/17/04 10,000- .2600 8/13/04 10,000- .2600 8/12/04 30,000- .2700 8/12/04 8,450- .2800 8/12/04 6,000- .2700 8/11/04 6,750- .2788 8/11/04 5,950 .2788 8/11/04 5,950- .2788 8/10/04 3,750- .2700 8/09/04 2,000- *Do 8/03/04 15,000- .2300 7/28/04 1,800- .1800 7/20/04 10,000- .2800 7/19/04 10,000- .3000 7/19/04 300- .3200 7/16/04 1,000- .3300 7/15/04 4,000- .3500 7/14/04 2,900- .3600 7/12/04 3,000- .4000 7/09/04 5,000- .4100 6/30/04 5,000- .4000 6/29/04 20,000- .4150 6/29/04 10,000- .4100 6/25/04 10,000- .4550 (1) Unless Otherwise Indicated, All Transactions Were Effected on the NASDAQ Bulletin Board. (2) Price Excludes Commission. (*) Results in Change of Dispositive Power and Beneficial Ownership

from SC 13D/A 1 page Schedule II Information With Respect to Transactions Effected During the Past Sixty Days or Since the Most Recent Filing on Schedule 13d (1) Shares Purchased Average Date Sold(-) Price(2) Common Stock-Penton Media Inc Mjg Associates, Inc. Gabelli International Ltd 12/15/03 50,000 1.3220 Gamco Investors, Inc. 2/02/04 5,500 .8900 1/30/04 3,000- .9300 1/30/04 4,500 .9500 1/23/04 20,000 1.2450 1/23/04 10,000- 1.2200 1/21/04 27,300 1.3000 1/15/04 17,000 1.2600 1/14/04 5,785 1.2400 1/13/04 1,000 1.2500 1/12/04 3,000- 1.2500 1/05/04 10,000 1.3250 12/31/03 7,500 1.3000 12/31/03 4,000- 1.3100 12/31/03 50,000 1.3200 12/30/03 50,700 1.2565 12/30/03 11,800- 1.2405 12/29/03 7,000- 1.1800 12/24/03 10,000 1.1800 12/24/03 4,550- 1.1644 12/23/03 10,000 1.2000 12/22/03 10,000 1.2075 12/18/03 1,200- 1.2500 12/17/03 1,000- 1.2200 12/17/03 6,000 1.3000 12/16/03 5,000 1.2910 12/16/03 2,000 1.2900 12/16/03 2,000 1.2574 12/16/03 4,500- 1.2900 12/12/03 5,000 1.3300 12/12/03 3,000 1.3000 12/11/03 33,800 1.2855 12/11/03 20,000- 1.2800 12/10/03 19,000 1.3000 Schedule II Information With Respect to Transactions Effected During the Past Sixty Days or Since the Most Recent Filing on Schedule 13d (1) Shares Purchased Average Date Sold(-) Price(2) Common Stock-Penton Media Inc Gamco Investors, Inc. 12/10/03 8,500- 1.2800 12/09/03 4,000- 1.2800 12/09/03 2,700 1.3000 12/08/03 19,000 1.3000 12/03/03 8,000- 1.1800 Gabelli Funds, LLC. Gabelli Equity Trust 1/09/04 12,000 1.3438 1/08/04 7,500 1.2333 (1) Unless Otherwise Indicated, All Transactions Were Effected on the NASDAQ Bulletin Board. (2) Price Excludes Commission. (*) Results in Change of Dispositive Power and Beneficial Ownership

from SC 13D/A 1 page Schedule II Information With Respect to Transactions Effected During the Past Sixty Days or Since the Most Recent Filing on Schedule 13d (1) Shares Purchased Average Date Sold(-) Price(2) Common Stock-Penton Media Inc Gamco Investors, Inc. 11/14/03 2,200- 1.2600 11/05/03 3,000- 1.2200 11/03/03 24,000- 1.2000 10/31/03 12,000- 1.1800 10/22/03 1,000- 1.1600 10/21/03 800- 1.2300 10/10/03 1,000- 1.4300 10/07/03 3,000- 1.4320 10/06/03 4,000 1.3875 10/02/03 7,000- 1.2571 10/02/03 5,000- 1.2500 10/01/03 250- *Do 10/01/03 3,750- *Do 9/30/03 2,000 1.1400 9/29/03 5,300- 1.1200 Gabelli Funds, LLC. Gabelli Global Multimedia Trus 11/18/03 10,000- 1.1535 Gabelli Equity Trust 11/18/03 5,000- 1.2100 11/17/03 5,000- 1.2360 11/14/03 5,000- 1.2400 11/13/03 5,000- 1.3709 11/11/03 5,000- 1.3900 11/10/03 5,000- 1.3810 11/07/03 5,000- 1.2640 11/06/03 5,000- 1.2400 11/05/03 5,000- 1.2200 11/04/03 5,000- 1.2800 11/03/03 5,000- 1.2000 10/31/03 5,000- 1.1400 10/30/03 5,000- 1.1600 10/29/03 5,000- 1.1800 10/28/03 5,000- 1.1900 10/27/03 5,000- 1.1900 10/24/03 5,000- 1.1625 10/23/03 5,000- 1.1350 10/22/03 5,000- 1.1400 10/21/03 5,000- 1.1600 10/20/03 5,000- 1.2500 10/17/03 5,000- 1.2600 10/16/03 5,000- 1.2500 10/15/03 5,000- 1.3600 10/14/03 5,000- 1.4500 10/13/03 5,000- 1.4500 10/10/03 5,000- 1.2630 10/09/03 5,000- 1.4580 10/08/03 5,000- 1.4360 10/07/03 5,000- 1.4420 10/06/03 5,000- 1.3700 10/03/03 5,000- 1.2500 10/01/03 5,000- 1.2600 9/30/03 5,000- 1.1100 9/29/03 5,000- 1.1200 9/26/03 5,000- 1.0500 9/25/03 5,000- 1.0350 9/24/03 5,000- 1.0300 (1) Unless Otherwise Indicated, All Transactions Were Effected on the NASDAQ National Market. (2) Price Excludes Commission. (*) Results in Change of Dispositive Power and Beneficial Ownership

from SC 13D/A 1 page Schedule II Information With Respect to Transactions Effected During the Past Sixty Days or Since the Most Recent Filing on Schedule 13d (1) Shares Purchased Average Date Sold(-) Price(2) Common Stock-Penton Media Inc Mario J. Gabelli 8/11/03 20,000 .6800 Mjg Associates, Inc. Gabelli International Ltd 8/20/03 50,000 .7900 Gamco Investors, Inc. 8/20/03 5,000 .8000 8/19/03 7,450- .7458 8/19/03 9,300 .7600 8/18/03 32,000 .7957 8/14/03 1,000- .6800 8/12/03 6,000 .6900 8/11/03 5,500- .6100 8/06/03 20,000 .7625 8/04/03 450- *Do 8/01/03 4,000- .7200 7/30/03 2,000 .7500 7/30/03 15,000 .8000 7/29/03 20,000 .8000 7/28/03 5,000- .7600 7/28/03 70,000 .7900 7/28/03 20,000- .7662 7/21/03 4,000 .6700 7/16/03 1,000- .6500 7/15/03 8,600 .6700 7/14/03 30,000- .7500 7/14/03 110,000 .7000 7/14/03 30,000 .7000 7/09/03 1,000 .6500 7/08/03 2,000- .6200 7/07/03 20,000 .6200 7/07/03 5,000- .6100 7/03/03 500- .5900 7/02/03 1,500- .5900 7/02/03 4,000- .6000 6/26/03 1,700- .5700 6/25/03 7,000- .5800 Gabelli Funds, LLC. Gabelli Small Cap Growth Fund 7/07/03 5,900 .6315 (1) Unless Otherwise Indicated, All Transactions Were Effected on the NASDAQ National Market. (2) Price Excludes Commission. (*) Results in Change of Dispositive Power and Beneficial Ownership

from SC 13D/A 1 page Schedule II Information With Respect to Transactions Effected During the Past Sixty Days or Since the Most Recent Filing on Schedule 13d (1) Shares Purchased Average Date Sold(-) Price(2) Common Stock-Penton Media Inc Mjg Associates, Inc. Gabelli International Ltd 4/16/03 18,500 .4554 Gamco Investors, Inc. 5/28/03 27,000 .6326 5/27/03 3,750- .6400 5/27/03 18,000 .6789 5/23/03 1,500 .6600 5/23/03 10,100 .6400 5/19/03 10,000- .7261 5/16/03 14,900 .6874 5/15/03 3,000 .6400 5/13/03 2,000- .6100 5/13/03 17,000 .6382 5/13/03 18,150- *Do 5/13/03 12,500 .6720 5/12/03 1,800- .6000 5/09/03 8,000- .6025 5/08/03 2,300 .6000 5/08/03 6,000- .6177 5/07/03 400- .6600 5/07/03 10,000 .6500 5/06/03 15,000 .6800 5/06/03 50,000 .6682 5/05/03 80,000 .6591 5/05/03 2,000- .6000 5/02/03 30,000 .4000 4/29/03 1,000- .3700 4/29/03 9,000 .4300 4/29/03 40,000 .4163 4/25/03 2,000- .3200 4/24/03 1,500- .3600 4/23/03 1,500 .3900 4/21/03 7,000 .3800 4/16/03 50,000 .4097 4/16/03 20,000- .4325 4/07/03 3,500 .7200 4/04/03 2,600 .7000 4/03/03 12,000- .7217 4/03/03 3,000 .7000 4/02/03 300- *Do 4/02/03 3,500 .7100 4/02/03 14,400 .6952 4/02/03 351- .7000 4/01/03 2,000 .6325 3/31/03 12,300 .5889 Gabelli Funds, LLC. Gabelli Small Cap Growth Fund 5/02/03 3,000 .6521 Gabelli Global Multimedia Trust 5/02/03 16,400 .6521 4/03/03 26,400 .7272 Gabelli Equity Trust 5/16/03 27,500 .7144 5/02/03 29,500 .6521 Gabelli Capital Asset Fund 5/19/03 13,600 .7200 5/07/03 10,000- .6453 (1) Unless Otherwise Indicated, All Transactions Were Effected on the NYSE. (2) Price Excludes Commission. (*) Results in Change of Dispositive Power and Beneficial Ownership

from SC 13D/A 1 page Schedule II Information With Respect to Transactions Effected During the Past Sixty Days or Since the Most Recent Filing on Schedule 13d (1) Shares Purchased Average Date Sold(-) Price(2) Common Stock-Penton Media Inc Gamco Investors, Inc. 2/18/03 50,000- .4000 2/12/03 4,000- .4500 2/12/03 70,000- .4300 2/11/03 30,000- .4203 2/07/03 8,250- .4400 1/31/03 520 *DI 1/28/03 5,000 .7000 1/28/03 1,000- .7000 1/27/03 4,000- .6350 1/24/03 8,000- .7038 1/23/03 2,000- .7000 1/23/03 6,900- .6949 1/22/03 800- .7400 1/17/03 6,000- .6800 1/16/03 40,000 .7000 1/07/03 20,000 .7855 12/31/02 500 .6615 12/31/02 23,900- .6615 12/31/02 3,000- .7000 12/31/02 6,000- .6800 12/31/02 500- .6615 12/30/02 17,800- .7085 12/30/02 1,200- .7100 12/30/02 1,500- .7300 12/27/02 17,849- .7429 12/26/02 45,000- .8032 12/24/02 4,000 .8800 12/24/02 1,000- .8100 12/24/02 5,500- .8300 12/23/02 24,000 .8525 12/23/02 2,000- .8250 12/20/02 778- .7700 12/20/02 8,900 .9000 Gabelli Funds, LLC. Gabelli Small Cap Growth Fund 2/12/03 70,000 .4300 Gabelli Equity Trust 2/19/03 20,000- .3673 (1) Unless Otherwise Indicated, All Transactions Were Effected on the NYSE. (2) Price Excludes Commission. (*) Results in Change of Dispositive Power and Beneficial Ownership

from SC 13D/A 1 page Schedule II Information With Respect to Transactions Effected During the Past Sixty Days or Since the Most Recent Filing on Schedule 13d (1) Shares Purchased Average Date Sold(-) Price(2) Common Stock-Penton Media Inc Gamco Investors, Inc. 11/26/02 8,500 .9500 11/26/02 91,800 .9372 11/26/02 700 .8900 11/26/02 20,000 .8800 11/26/02 2,000 .9600 11/26/02 6,500 .9594 11/26/02 15,500- .9300 11/26/02 15,400- .9138 11/25/02 72,100 .8405 11/25/02 1,200 .8200 11/25/02 16,000 .8000 11/25/02 10,600- .7928 11/22/02 7,000 .7500 11/22/02 150,400 .7550 11/22/02 5,000- .7010 11/22/02 103,000 .6987 11/21/02 50,000- .7389 11/21/02 1,000 .6700 11/21/02 2,000 .8100 11/21/02 13,500- .7367 11/20/02 10,000 .8700 11/20/02 1,000- .8500 11/20/02 4,800- .8200 11/20/02 20,000 .8668 11/19/02 5,000 .9000 11/18/02 1,000- .8900 11/18/02 3,500- .8954 11/18/02 4,000 .9900 (1) Unless Otherwise Indicated, All Transactions Were Effected on the NYSE. (2) Price Excludes Commission

from SC 13D/A ~5 pages Underwriting agreement

from SC 13D/A ~5 pages Underwriting agreement

from 4 1 page Attachment to Form 4 Issuer & Ticker Symbol: Penton Media, Inc. (Pme) Statement For: September 4, 2002 Designated Filer: Gabelli Asset Management Inc. List of Joint Filers: Gabelli Group Capital Partners, Inc. One Corporate Center Rye, New York 10580 Mario J. Gabelli One Corporate Center Rye, New York 10580 Page 3 of 3

from SC 13D/A 1 page Schedule II Information With Respect to Transactions Effected During the Past Sixty Days or Since the Most Recent Filing on Schedule 13d (1) Shares Purchased Average Date Sold(-) Price(2) Common Stock-Penton Media Inc Gamco Investors, Inc. 8/06/02 15,250- .4306 8/05/02 10,000- .4481 8/02/02 3,000- .3600 7/29/02 5,000- .3400 7/26/02 2,000- .3400 7/26/02 130,000 .3000 7/25/02 5,000 .3200 7/25/02 2,000 .3500 7/25/02 1,000 .3000 7/25/02 12,000 .3400 7/25/02 8,000- .3094 7/24/02 2,000- .3400 7/23/02 13,500- .3878 7/23/02 2,000- .4000 7/22/02 5,000 .3800 7/22/02 3,500- .3657 7/19/02 2,500- .3200 7/18/02 1,000- 1.2800 7/18/02 4,800- 1.4569 7/18/02 5,000- 1.4832 7/17/02 4,000- 1.4305 7/16/02 6,000- 1.3707 7/15/02 11,250- 1.0928 7/12/02 22,200- 1.1000 7/11/02 1,500- 1.2500 7/10/02 2,000- 1.6525 7/05/02 2,500- 1.7000 7/03/02 8,600- 1.7657 7/01/02 650- 2.0500 7/01/02 1,000- *Do 6/27/02 1,000- 1.8200 6/27/02 2,500- 1.6024 6/25/02 10,000 2.4420 6/24/02 1,000- 2.3350 6/24/02 4,200- 2.3331 6/21/02 5,500- 2.4927 6/19/02 700 3.1743 6/18/02 1,000- 3.1100 6/17/02 2,250- 2.9967 6/14/02 3,000- 3.5860 6/13/02 2,000 3.8500 6/11/02 1,000- 3.8800 Gabelli Funds, LLC. Gabelli Value Fund 6/17/02 5,000- 3.1302 Gabelli Small Cap Growth Fund 7/23/02 20,000 .3915 Gabelli Global Multimedia Trust 6/17/02 3,000- 2.9700 Gabelli Capital Asset Fund 7/23/02 100,000 .3915 (1) Unless Otherwise Indicated, All Transactions Were Effected on the NYSE. (2) Price Excludes Commission. (*) Results in Change of Dispositive Power and Beneficial Ownership

from SC 13D/A 1 page Schedule II Information With Respect to Transactions Effected During the Past Sixty Days or Since the Most Recent Filing on Schedule 13d (1) Shares Purchased Average Date Sold(-) Price(2) Common Stock-Penton Media Inc Gamco Investors, Inc. 5/30/02 5,000 3.6900 5/29/02 625 3.7100 (1) Unless Otherwise Indicated, All Transactions Were Effected on the NYSE. (2) Price Excludes Commission