------ 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 Helsel Brett L. F5 NETWORKS, INC. (ffiv) TO ISSUER (Check all applicable) -------------------------------------------- ---------------------------------------------- Director 10% Owner (Last) (First) (Middle) 3. IRS OR SOCIAL SECURITY 4. STATEMENT FOR ---- --- c/o F5 Networks, Inc. NUMBER OF REPORTING MONTH/YEAR X Officer (give Other (specify 401 Elliott Avenue West PERSON, IF AN ENTITY FEBRUARY 2002 ---- title below) --- below) -------------------------------------------- (VOLUNTARY) ------------------- (Street) 5. IF AMENDMENT, Chief Technology Officer Seattle WA 98119 DATE OF ORIGINAL ------------------------------------ -------------------------------------------- (MONTH/YEAR) (City) (State) (Zip) 7. INDIVIDUAL OR JOINT/GROUP FILING ------------------- (Check Applicable Line) 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 (Instr. 8) OWNED AT (D) OR OWNERSHIP (Month/ END OF MONTH INDIRECT (Instr. 4) Day/ --------------------------------------- (Instr. 3 and 4) (I) Year) Code V Amount (A) or Price (Instr. 4) (D) ------------------------------------------------------------------------------------------------------------------------------------ Common Stock 2/25/02 S 3,261 D $23.08 D ------------------------------------------------------------------------------------------------------------------------------------ Common Stock 2/25/02 M 13,739 A $7.00 D ------------------------------------------------------------------------------------------------------------------------------------ Avg. price Common Stock 2/25/02 S 13,739 D of $23.14 111,333 D ------------------------------------------------------------------------------------------------------------------------------------ 150 I By Trust ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. (Over) *If the form is filed by more than one reporting person, see Instruction 4(b)(v). SEC 1474 (3-99) Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number. (Print or Type Responses) FORM 29961 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 Security sion or action action Derivative cisable and of Underlying of (Instr. 3) Exercise Date Code Securities Ac- Expiration Securities Deriv- Price of (Month/ (Instr. 8) quired (A) or Date (Instr. 3 and 4) ative Deriv- Day/ Disposed of (D) (Month/Day/ Secur- ative Year) (Instr. 3, 4, Year) ity Security and 5) (Instr. 5) ------------------------------------------------------------------------------------------------------------------------------------ Code V (A) (D) Date Expira- Title Amount or Exer- tion Number of cisable Date Shares ------------------------------------------------------------------------------------------------------------------------------------ Common Stock $7.00 2/25/02 M 13,739 5/27/01 4/27/11 Common 13,739 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) -------------------------------------------------------------------------- D -------------------------------------------------------------------------- -------------------------------------------------------------------------- -------------------------------------------------------------------------- -------------------------------------------------------------------------- -------------------------------------------------------------------------- -------------------------------------------------------------------------- Explanation of Responses: **Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a). /s/ Brett Helsel 3/4/02 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. FORM 29963