SEC Form 4

FORM 4		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 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* Drako Dean M (Last) (First) (Middle) C/O BARRACUDA NETWORKS, INC. 3175 S. WINCHESTER BLVD. (Street) CAMPBELL CA 95008 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol BARRACUDA NETWORKS INC [ CUDA ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director X 10% Owner Officer (give title below) Other (specify below)
	3. Date of Earliest Transaction (Month/Day/Year) 10/12/2016
	4. If Amendment, Date of Original Filed (Month/Day/Year)	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. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	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	09/26/2016		G	V	5,000	D	$0.00	2,562,111	I	By Trust(1)
Common Stock	10/12/2016		S		15,458	D	$26.4(2)	1,184,491(3)	I	By Trust(4)
Common Stock	10/12/2016		S		15,458	D	$26.4(2)	1,746,653(5)	I	By Trust(1)
Common Stock	10/12/2016		S		15,458	D	$26.4(2)	2,091,075	I	By Trust(6)
Common Stock	10/13/2016		S		667	D	$26.4	1,183,824	I	By Trust(4)
Common Stock	10/13/2016		S		667	D	$26.4	1,745,986	I	By Trust(1)
Common Stock	10/13/2016		S		666	D	$26.4	2,090,409	I	By Trust(6)
Common Stock	10/14/2016		S		3,508	D	$26.4	1,180,316	I	By Trust(4)
Common Stock	10/14/2016		S		3,508	D	$26.4	1,742,478	I	By Trust(1)
Common Stock	10/14/2016		S		3,509	D	$26.4	2,086,900	I	By Trust(6)
Common Stock								240,000	I	By Trust(7)
Common Stock								116,667	I	By Trust(8)
Common Stock								1,600,000(9)	I	By Trust(10)

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 (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	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 (Month/Day/Year)		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: 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

Explanation of Responses:

1. The shares are held directly by the Drako Trust F for which the Reporting Person serves as a trustee.

2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $26.40 to $26.42 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.

3. Excludes 800,000 shares previously reported as held directly by the Drako Living Trust for which the Reporting Person serves as the trustee. The shares have been re-registered and are now held by the DD Investment Management Trust B for which the Reporting Person serves as the trustee.

4. The shares are held directly by the Dean M. Drako Living Trust for which the Reporting Person serves as a trustee.

5. Excludes 800,000 shares previously reported as held directly by the Drako Trust F for which the Reporting Person serves as the trustee. The shares have been re-registered and are now held by the DD Investment Management Trust B for which the Reporting Person serves as the trustee.

6. The shares are held directly by the DD Investment Management Trust A for which the Reporting Person serves as trustee.

7. The shares are held directly by the DD Investment Trust B for which the Reporting Person serves as a trustee.

8. The shares are held directly by the DD Investment Trust A for which the Reporting Person serves as a trustee.

9. Includes 800,000 shares previously reported as held directly by the Drako Living Trust, and 800,000 shares previously reported as held directly by the Drako Trust F for which the Reporting Person serves as a trustee.

10. The shares are held directly by the DD Investment Management Trust B for which the Reporting Person serves as trustee.

Remarks:

	/s/ Diane Honda Attorney-in-Fact for Dean M. Drako	10/14/2016
	** 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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