Statement of Changes in Beneficial Ownership (4)

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 OF SECURITIES	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response... 0.5
	Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

1. Name and Address of Reporting Person * Perone Michael D	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                      _____ 10% Owner _____ Officer (give title below)      _____ Other (specify below)
(Last)          (First)          (Middle) C/O BARRACUDA NETWORKS, INC., 3175 S. WINCHESTER BLVD.	3. Date of Earliest Transaction (MM/DD/YYYY) 9/28/2017
(Street) CAMPBELL, CA 95008 (City)        (State)        (Zip)	4. If Amendment, Date Original Filed (MM/DD/YYYY)	6. 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 (Instr. 3)	2. Trans. Date	2A. Deemed Execution Date, if any	3. Trans. 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	9/28/2017		S (1)		82906	D	$24.10   (2)	1816494	D
Common Stock	9/28/2017		S (1)		19053	D	$24.10   (2)	490345	I	By LLC   (3)
Common Stock	9/28/2017		S (1)		10775	D	$24.10   (2)	296087	I	By Trust   (4)
Common Stock	9/28/2017		S (1)		9065	D	$24.10   (2)	248359	I	By Trust   (5)
Common Stock	9/28/2017		M		40000	A	$12.66	1856494	D
Common Stock	9/28/2017		M		12500	A	$17.13	1868994	D
Common Stock	9/28/2017		F (6)		29961	D	$24.05	1839033	D
Common Stock	9/29/2017		S (1)		94453	D	$24.16   (7)	1744580	D
Common Stock	9/29/2017		S (1)		21936	D	$24.16   (7)	468409	I	By LLC   (3)
Common Stock	9/29/2017		S (1)		12406	D	$24.16   (7)	283681	I	By Trust   (4)
Common Stock	9/29/2017		S (1)		10437	D	$24.16   (7)	237922	I	By Trust   (5)
Common Stock								462744	I	By Spouse
Common Stock								128523	I	By Trust   (8)

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	4. Trans. 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		7. Title and Amount of Securities Underlying Derivative Security (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
Employee Stock Option (right to buy)	$12.66	9/28/2017		M			40000	(9)	11/20/2022	Common Stock	40000.0	$0	0	D
Employee Stock Option (right to buy)	$17.13	9/28/2017		M			12500	(9)	5/25/2026	Common Stock	12500.0	$0	0	D

Explanation of Responses:
(1)	The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on Oct 17, 2016.
(2)	The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $24.00 to $24.25, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within footnotes (2) and (7).
(3)	The shares are held directly Consulting2 LLC for which the Reporting Person serves as the managing member.
(4)	The shares are held directly by the Perone Family 2010 Irrevocable Trust dated June 29, 2010 for which the Reporting Person serves as a trustee.
(5)	The shares are held directly by the Perone 2012 Irrevocable Trust for which the Reporting Person serves as a trustee.
(6)	The exercise price of the options was paid by delivering already-owned shares of Issuer common stock valued at the current market price of $24.05 per share.
(7)	The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $24.01 to $24.28, inclusive.
(8)	The shares are held directly by the Perone Family 2010 Irrevocable Trust - Exempt dated June 29, 2010 for which the Reporting Person serves as a trustee.
(9)	Shares subject to the option are fully vested and immediately exercisable.

Reporting Owners
Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Perone Michael D C/O BARRACUDA NETWORKS, INC. 3175 S. WINCHESTER BLVD. CAMPBELL, CA 95008	X

Signatures
/s/ Diane Honda Attorney-in-Fact for Michael D. Perone		9/29/2017
** Signature of Reporting Person		Date

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).
Note:	File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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