------ U.S. SECURITIES AND EXCHANGE COMMISSION ------------------------------ FORM 4 WASHINGTON, D.C. 20549 OMB APPROVAL ------ ------------------------------ STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OMB NUMBER: 3235-0287 [ ] CHECK THIS BOX IF NO EXPIRES: DECEMBER 31, 2001 LONGER SUBJECT TO FILED PURSUANT TO SECTION 16(a) OF THE SECURITIES ESTIMATED AVERAGE BURDEN SECTION 16. FORM 4 EXCHANGE ACT OF 1934, SECTION 17(a) OF THE HOURS PER RESPONSE.........0.5 OR FORM 5 OBLIGATIONS PUBLIC UTILITY HOLDING COMPANY ACT OF 1935 ------------------------------ MAY CONTINUE. SEE OR SECTION 30(f) OF THE INVESTMENT COMPANY INSTRUCTION 1(b). ACT OF 1940 ------------------------------------------------------------------------------------------------------------------------------------ 1. NAME AND ADDRESS OF REPORTING PERSON* 2. ISSUER NAME AND TICKER OR TRADING SYMBOL 6. RELATIONSHIP OF REPORTING PERSON Guelich Karl D. F5 NETWORKS, INC. (ffiv) TO ISSUER (Check all applicable) ------------------------------------------- ---------------------------------------------- X Director 10% Owner (Last) (First) (Middle) 3. IRS OR SOCIAL SECURITY 4. STATEMENT FOR ---- --- NUMBER OF REPORTING MONTH/YEAR Officer (give Other (specify c/o F5 Networks, Inc. PERSON, IF AN ENTITY May 2002 ---- title below) --- below) 401 Elliott Avenue West (VOLUNTARY) ----------------- ------------------------------------------- 5. IF AMENDMENT, (Street) DATE OF ORIGINAL ------------------------------------ (MONTH/YEAR) Seattle WA 98119 7. INDIVIDUAL OR JOINT/GROUP FILING ------------------------------------------- ----------------- (CHECK APPLICABLE LINE) (City) (State) (Zip) X Form filed by One ---- Reporting Person Form filed by More than ---- One Reporting Person ------------------------------------------------------------------------------------------------------------------------------------ TABLE I -- NON-DERIVATIVE SECURITIES ACQUIRED, DISPOSED OF, OR BENEFICIALLY OWNED ------------------------------------------------------------------------------------------------------------------------------------ 1. TITLE OF SECURITY 2. TRANS- 3. TRANS- 4. SECURITIES ACQUIRED (A) 5. AMOUNT OF 6. OWNERSHIP 7. NATURE OF (Instr. 3) ACTION ACTION OR DISPOSED OF (D) SECURITIES FORM: INDIRECT DATE CODE (Instr. 3, 4 and 5) BENEFICIALLY DIRECT BENEFICIAL (Month/ (Instr. 8) OWNED AT (D) OR OWNERSHIP Day/ END OF MONTH INDIRECT (Instr. 4) Year) --------------------------------------- (Instr. 3 and 4) (I) Code V Amount (A) or Price (Instr. 4) (D) ------------------------------------------------------------------------------------------------------------------------------------ Common Stock 5/13/02 P 440 A $11.44 440 I By Partner- ship(1) ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ 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). Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form (Over) displays a currently valid OMB Number. SEC 1474 (3-99) (Print or Type Responses) FORM 4 (CONTINUED) TABLE II -- DERIVATIVE SECURITIES ACQUIRED, DISPOSED OF, OR BENEFICIALLY OWNED (E.G., PUTS, CALLS, WARRANTS, OPTIONS, CONVERTIBLE SECURITIES) ------------------------------------------------------------------------------------------------------------------------------------ 1. Title of Derivative 2. Conver- 3. Trans- 4. Trans- 5. Number of 6. Date Exer- 7. Title and Amount 8. Price of Security sion or action action Derivative cisable and of Underlying Derivative (Instr. 3) Exercise Date Code Securities Ac- Expiration Securities Security Price of (Month/ (Instr. 8) quired (A) or Date (Instr. 3 and 4) (Instr. 5) Deriv- Day/ Disposed of (D) (Month/Day/ ative Year) (Instr. 3, 4, Year) Security and 5) ------------------------------------------------------------------------------------------------------------------------------------ Code V (A) (D) Date Expira- Title Amount or Exer- tion Number of cisable Date Shares ------------------------------------------------------------------------------------------------------------------------------------ Non-Qualified Stock Option $11.12 5/6/02 A 15,000 5/6/02 5/6/12 Common 15,000 (right to buy)(2) Stock ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ 9. Number of 10. Ownership 11. Nature of Derivative Form of Indirect Securities Derivative Beneficial Beneficially Security: Ownership Owned at End Direct (D) (Instr. 4) of Month or Indirect (I) (Instr. 4) (Instr. 4) -------------------------------------------------------------------------- 15,000 D -------------------------------------------------------------------------- -------------------------------------------------------------------------- -------------------------------------------------------------------------- -------------------------------------------------------------------------- -------------------------------------------------------------------------- -------------------------------------------------------------------------- Explanation of Responses: (1) Represents the reporting person's proportionate beneficial interest in shares held by a family partnership. The reporting person shares dispositive power over these shares with the other partners as per the partnership agreement. (2) The options vested 100% on the grant date. **Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a). /s/ KARL GUELICH 6/4/02 Note: File three copies of this Form, one of which must be manually signed. ------------------------------- --------------- If space is insufficient, see Instruction 6 for procedure. **Signature of Reporting Person Date Potential persons who are to respond to the collection of information Page 2 contained in this form are not required to respond unless the form SEC 1474 (3-99) displays a currently valid OMB Number.