X0202 4 2005-06-01 1 0000701319 COMPUTER NETWORK TECHNOLOGY CORP CMNT 0001184340 BERTELSEN JEFFREY A 6000 NATHAN LANE NORTH PLYMOUTH MN 55442 0 1 0 0 VP Finance and Treasurer Common Stock 2005-06-01 4 D 0 17666 D 0 D Incentive Stock Option (right to buy) 3.625 2005-06-01 4 D 0 1250 D 2007-12-16 Common Stock 1250 0 D Incentive Stock Option (right to buy) 4.9375 2005-06-01 4 D 0 625 D 2008-06-16 Common Stock 625 0 D Incentive Stock Option (right to buy) 14.0625 2005-06-01 4 D 0 3500 D 2009-04-19 Common Stock 3500 0 D Non-Qualified Stock Option (right to buy) 17.75 2005-06-01 4 D 0 10000 D 2010-02-10 Common Stock 10000 0 D Non-Qualified Stock Option (right to buy) 8.7812 2005-06-01 4 D 0 9000 D 2011-04-04 Common Stock 9000 0 D Non-Qualified Stock Option (right to buy) 10.01 2005-06-01 4 D 0 813 D 2011-04-25 Common Stock 813 0 D Incentive Stock Option (right to buy) 11.35 2005-06-01 4 D 0 10000 D 2012-02-24 Common Stock 10000 0 D Incentive Stock Option (right to buy) 4.53 2005-06-01 4 D 0 15000 D 2012-10-06 Common Stock 15000 0 D Incentive Stock Option (right to buy) 6.57 2005-06-01 4 D 0 15000 D 2014-03-21 Common Stock 15000 0 D Includes award of 16,000 restricted stock units, all of which will vest upon completion of the merger. Disposed of pursuant to Agreement and Plan of Merger among Issuer, McData Corporation and Condor Acqusition, Inc. in exchange for 2,165 shares of McData Class A common stock and 20,800 restricted stock units for McData Class A common stock, respectively, having a market value of $3.76 per share on the effective date of the merger, together with cash in lieu of fractional shares. This fully vested option granted on December 17, 1997 was assumed by McData Corporation and replaced with an option to acquire 1625 shares of McData Class A common stock for $2.79 per share. This fully vested option granted on June 17, 1998 was assumed by McData Corporation and replaced with an option to acquire 812 shares of McData Class A common stock for $3.80 per share, together with cash in lieu of fractional shares. This fully vested option granted on April 20, 1999 was assumed by McData Corporation and replaced with an option to acquire 4,550 shares of McData Class A common stock for $10.82 per share. This fully vested option granted on February 11, 2000 was assumed by McData Corporation and replaced with an option to acquire 13,000 shares of McData Class A common stock for $13.65 per share. This fully vested option granted on April 5, 2001 was assumed by McData Corporation and replaced with an option to acquire 11,700 shares of McData Class A common stock for $6.75 per share. This fully vested option granted on April 26, 2001 was assumed by McData Corporation and replaced with an option to acquire 1,056 shares of McData Class A common stock for $7.70 per share, together with cash in lieu of fractional shares. This partially vested option, which was granted on February 25, 2002 and provided for vesting of 2,500 options on February 25, 2006, was assumed by McData Corporation and replaced with an option to acquire 13,000 shares of McData Class A common stock for $8.73 per share. This partially vested option, which was granted on October 7, 2002 and provided for vesting of 3,750 options on each of October 7, 2005 and October 7, 2006, respectively, was assumed by McData Corporation and replaced with an option to acquire 19,500 shares of McData Class A common stock for $3.48 per share. This partially vested option, which was granted on March 5, 2003 and provided for vesting of 3,750 options on each of March 5, 2006 and March 5, 2007, respectively, was assumed by McData Corporation and replaced with an option to acquire 19,500 shares of McData Class A common stock for $5.05 per share. /s/ Gregory T. Barnum, Attorney-in-fact 2005-06-01