Oak Technology Inc Watch

from SC 13D/A 1 page Underwriting agreement

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-Oak Technology Inc Gabelli Securities Intl 4/04/00 1,000- 15.2500 Gabelli International Ltd 6/02/00 9,300- 17.5733 5/31/00 5,000- 3.1900 Gamco Investors, Inc. 6/02/00 7,000- 17.5089 5/30/00 500 13.8750 5/30/00 500- 13.8750 5/30/00 500 13.8750 5/26/00 2,000- 13.7344 5/25/00 12,000- 14.1099 5/18/00 2,000- 16.6250 5/17/00 2,000- 16.7500 5/16/00 1,000- 17.8125 5/12/00 1,500- 17.9375 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-Oak Technology Inc Gamco Investors, Inc. 5/08/00 3,000- 17.4167 5/04/00 1,000- 17.1875 5/02/00 1,000- 16.5000 5/01/00 500 15.5625 4/27/00 1,000 14.0000 4/26/00 2,000 14.0000 4/24/00 1,000 13.0000 4/18/00 2,000 13.0000 4/17/00 3,000 11.1250 3/31/00 900- 19.2500 Gabelli Funds, LLC. Gabelli Asset Fund 5/17/00 5,000- 16.8744 (1) Unless Otherwise Indicated, All Transactions Were Effected on the NASDAQ National 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-Oak Technology Inc Gabelli Funds, LLC the Gabelli Small Cap Growth Fund 4/22/99 25,000 3.0000 4/22/99 17,500 2.9821 the Gabelli Global Multi Media Trust 3/05/99 18,500 3.6250 3/05/99 20,000 3.5625 Gamco Investors, Inc. 4/23/99 48,000 3.3554 4/22/99 43,500 3.2931 3/31/99 5,000 3.0625 3/12/99 3,000 3.4375 3/10/99 10,000 3.6812 3/09/99 5,000 3.6250 3/04/99 10,000 3.5369 3/03/99 2,500 3.3250 2/24/99 5,000 3.1250 2/23/99 7,000 3.0580 (1) Unless Otherwise Indicated, All Transactions Were Effected on the NASDAQ National Market. (2) Price Excludes Commission

from 8-A12B/A 1 page Underwriting agreement

from 8-A12G ~50 pages Underwriting agreement