Sec Form 4 Filing - Golob David R @ BARRACUDA NETWORKS INC - 2016-10-19

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 Golob David R 2. Issuer Name and Ticker or Trading Symbol BARRACUDA NETWORKS INC [ CUDA] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director X __ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O FRANCISCO PARTNERS MANAGEMENT, L.P., ONE LETTERMAN DRIVE, BUILDING C- STE 410 3. Date of Earliest Transaction (MM/DD/YY) 10/19/2016 (Street) SAN FRANCISCO, CA94129 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 10/19/2016 J 1,999,147 D ( 1 ) $ 0 4,154,465 ( 3 ) I See footnotes ( 3 ) ( 4 ) ( 5 ) Common Stock 10/19/2016 J 83,209 A ( 2 ) $ 0 4,237,674 ( 3 ) I See footnotes ( 3 ) ( 4 ) ( 5 )

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

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Golob David R C/O FRANCISCO PARTNERS MANAGEMENT, L.P. ONE LETTERMAN DRIVE, BUILDING C- STE 410 SAN FRANCISCO, CA94129 X X Signatures By: /s/ David R. Golob 10/21/2016 Signature of Reporting Person Date

Explanation of Responses:

( 1 )On October 19, 2016, each of Francisco Partners, L.P. ("LP I"), Francisco Partners Fund A, L.P. ("FPFA"), Francisco Partners Fund III, L.P. ("FP III") and Francisco Partners Parallel Fund III, L.P. ("FPPF III") made pro rata distributions of common stock of Barracuda Networks, Inc., par value $0.001 per share ("Common Stock"), without any additional consideration, to their respective limited and general partners. ( 2 )In connection with the transactions described in footnote 1 herein, (i) FPFA's pro rata distribution of Common Stock included the disposition of Common Stock to Francisco Partners GP, LLC ("FP GP LLC"), and (ii) FP III's pro rata distribution of Common Stock included the disposition of Common Stock to Francisco Partners GP III, L.P. ("FP GP III LP"). ( 3 )These securities include Common Stock directly held and beneficially owned by Francisco Partners (as defined herein) as well as the 4,753 shares of Common Stock either directly held or beneficially owned, through one or more family trusts, by Mr. Golob. ( 4 )The general partner of each of FP I and FPFA is FP GP LLC. The general partner of each of FP III and FPPF III is FP GP III LP. The general partner of FP GP III LP is Francisco Partners GP III Management, LLC ("FP GP III Mgmt", and collectively with FP I, FPFA, FP III, FPPF III, FP GP LLC and FP GP III LP, "Francisco Partners"). ( 5 )Mr. Golob, an officer of an affiliate of Francisco Partners, is a member of the board of directors of the Issuer. Each of FP I, FPFA, FP III, FPPF III, FP GP LLC, FP GP III LP and FP GP III Mgmt are affiliates of Francisco Partners and have each filed separate Form 4s reporting transactions in Common Stock that each may be deemed to beneficially own. Mr. Golob disclaims beneficial ownership of any Common Stock of the Issuer that may be deemed to be beneficially owned by affiliates of Francisco Partners, including each of FP I, FPFA, FP III, FPPF III, FP GP LLC, FP GP III LP and FP GP III Mgmt, except to the extent of his pecuniary interest therein.

Remarks: This report is one of three reports, each on a separate Form 4, but relating to the same transaction being filed by Francisco Partners and certain of its affiliated funds and partners. Prior to the transactions described herein, the Reporting Person may be deemed to be, but does not concede to being, a member of a group holding over 10% of the outstanding common stock of the Issuer for purposes of Section 13(d)(3) of the Securities Exchange Act of 1934.

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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