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------ U.S. SECURITIES AND EXCHANGE COMMISSION ------------------------------
FORM 4 WASHINGTON, D.C. 20549 OMB APPROVAL
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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
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1. Name and Address of Reporting Person* 2. Issuer Name and Ticker or Trading Symbol 6. Relationship of Reporting Person to
Chamberlain Robert J F5 Networks, Inc. (ffiv) Issuer (Check all applicable)
--------------------------------------------- ---------------------------------------------- Director 10% Owner
(Last) (First) (Middle) 3. IRS or Social Security 4. Statement for ---- ---
501 Elliott Avenue West Number of Reporting Month/Year X Officer Other (specify
--------------------------------------------- Person, if an entity August 2000 ----(give title --- below)
(Street) (Voluntary) ------------------ below)
Seattle, WA 98119 5. If Amendment, Senior Vice President of
--------------------------------------------- -------------------------- Date of Original Finance and CFO
(City) (State) (Zip) (Month/Year) --------------------------------
7. Individual or Joint/Group Filing
------------------ (Check Applicable Line)
X Form filed by One
---- Reporting Person
Form filed by More Than
---- One Reporting Person
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TABLE I -- NON-DERIVATIVE SECURITIES ACQUIRED, DISPOSED OF, OR BENEFICIALLY OWNED
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1. Title of Security 2. Trans- 3. Transac- 4. Securities Acquired (A) 5. Amount of Se- 6. Owner- 7. Nature
(Instr. 3) action tion or Disposed of (D) curities Benefi- ship of In-
Date Code (Instr. 3, 4 and 5) cially Owned at Form: direct
(Instr. 8) End of Month Direct Benefi-
(Month/ (Instr. 3 and 4) (D) or cial
Day/ --------------------------------------- Indirect Owner-
Year) Code V Amount (A) or Price (I) ship
(D) (Instr. 4) (Instr. 4)
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Common Stock 8/4/00 S 3,000 D $45.50 D
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Common Stock 1 8/7/00 G 2,000 D 145,000 D
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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 displays a currently valid OMB Number (Over)
(Print or Type Response) SEC 1474 (3-99)
FORM 29963
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FORM 4 (CONTINUED) TABLE II -- DERIVATIVE SECURITIES ACQUIRED, DISPOSED OF, OR BENEFICIALLY OWNED
(E.G., PUTS, CALLS, WARRANTS, OPTIONS, CONVERTIBLE SECURITIES)
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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)
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Code V (A) (D) Date Expira- Title Amount or
Exer- tion Number of
cisable Date Shares
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9. Number of 10. Ownership 11. Nature of
Derivative of Derivative Indirect
Securities Security: Beneficial
Beneficially Direct (D) Ownership
Owned at End or Indirect (I) (Instr. 4)
of Month (Instr. 4)
(Instr. 4)
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Explanation of Responses:
1. Shares donated to several charitable organizations.
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations.
See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
/s/ BOB CHAMBERLAIN 9-5-00
Note: File three copies of this Form, one of which must be manually signed. ------------------------------- ---------------
If space provided 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 of 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
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