Sec Form 4 Filing - CUTHBERT JACK @ BROCADE COMMUNICATIONS SYSTEMS INC - 2003-08-15

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person CUTHBERT JACK 2. Issuer Name and Ticker or Trading Symbol BROCADE COMMUNICATIONS SYSTEMS INC [ BRCD] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) VP, OEM Sales (Last) (First) (Middle) 3. Date of Earliest Transaction (MM/DD/YY) 08/15/2003 (Street) SAN JOSE, CA95110 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock( 1 ) 6,030 D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Non-qualified Stock Option (right to buy)( 2 ) $ 6.54 07/10/2003 07/10/2013 Common Stock 85,334 85,334 D Non-qualified Stock Option (right to buy)( 3 ) $ 6.54 07/10/2003 07/10/2013 Common Stock 47,776 47,776 D Non-qualified Stock Option (right to buy)( 4 ) $ 6.54 07/10/2003 07/10/2013 Common Stock 105,556 105,556 D Non-qualified Stock Option (right to buy)( 5 ) $ 6.54 07/10/2003 07/10/2013 Common Stock 271,000 271,000 D Non-qualified Stock Option (right to buy)( 6 ) $ 6.54 07/10/2003 07/10/2013 Common Stock 10,494 10,494 D Non-qualified Stock Option (right to buy)( 7 ) $ 6.54 07/10/2003 07/10/2013 Common Stock 23,063 23,063 D Non-qualified Stock Option (right to buy)( 8 ) $ 6.54 07/10/2003 07/10/2013 Common Stock 168,745 168,745 D Non-qualified Stock Option (right to buy)( 9 ) $ 6.54 07/10/2003 07/10/2013 Common Stock 155,625 155,625 D Non-qualified Stock Option (right to buy) $ 5.53 08/15/2003 A 250,000 09/15/2003( 11 ) 08/15/2010 Common Stock 250,000 $ 0( 10 ) 250,000 D Incentive Stock Option (right to buy)( 12 ) $ 0.2813 06/18/1999 06/18/2008 Common Stock 55,000 55,000 D Incentive Stock Option (right to buy)( 13 ) $ 0.2813 12/07/1999 12/07/2008 Common Stock 20,000 20,000 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other CUTHBERT JACK SAN JOSE, CA95110 VP, OEM Sales Signatures /s/ Jack Cuthbert 08/19/2003 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Beneficial ownership disclosure only. ( 2 )Beneficial ownership disclosure only. 74,667 options vest on July 10, 2003; 10,667 options vest monthly from July 18, 2003 through August 18, 2003. ( 3 )Beneficial ownership disclosure only. 47,776 options vest on July 10, 2003. ( 4 )Beneficial ownership disclosure only. 86,111 options vest on July 10, 2003; 19,445 options vest monthly from July 31, 2003 through January 31, 2004. ( 5 )Beneficial ownership disclosure only. 166,666 options vest on July 10, 2003; 33,334 options vest monthly from August 1, 2003 through November 1, 2003; 71,000 options vest monthly from November 1, 2003 through November 1, 2004. ( 6 )Beneficial ownership disclosure only. 10,494 options vest on July 10, 2003. ( 7 )Beneficial ownership disclosure only. 16,605 options vest on July 10, 2003; 6,458 options vest monthly from July 31, 2003 through January 31, 2004. ( 8 )Beneficial ownership disclosure only. 85,960 options vest on July 10, 2003; 26,449 options vest monthly from August 1, 2003 through November 1, 2003; 56,336 options vest monthly from November 1, 2003 through November 1, 2004. ( 9 )Beneficial ownership disclosure only. 62,250 options vest on July 10, 2003; 93,375 options vest monthly from August 1, 2003 through October 1, 2005. ( 10 )The price of the derivitive security will be determined at a future date upon exercise of the option. ( 11 )Options vest monthly from September 15, 2003 through August 15, 2007. ( 12 )Beneficial ownership disclosure only. Options fully vested on June 18, 2002. ( 13 )Beneficial ownership disclosure only. Options fully vested on December 7, 2002.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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