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 * Hylen Christopher	2. Issuer Name and Ticker or Trading Symbol IMPERVA INC [ IMPV ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __ X __ Director                      _____ 10% Owner __ X __ Officer (give title below)      _____ Other (specify below) President and CEO
(Last)          (First)          (Middle) C/O IMPERVA, INC., 3400 BRIDGE PARKWAY	3. Date of Earliest Transaction (MM/DD/YYYY) 11/15/2018
(Street) REDWOOD SHORES, CA 94065 (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	11/15/2018		M		6325	A	$0.00	21332	D
Common Stock	11/15/2018		F (1)		3136	D	$55.88	18725   (2)	D

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
Restricted Stock Units	(3)	11/15/2018		M			6325	(4)	8/17/2027   (5)	Common Stock	6325	$0.00	69575	D

Explanation of Responses:
(1)	Exempt transaction pursuant to Rule 16b-3(e). The shares were automatically withheld by the Issuer in accordance with the agreement governing the RSUs to satisfy tax withholding obligations of the Reporting Person resulting from the vesting and settlement of the RSUs. The shares were withheld and cancelled by the Issuer and no shares were sold by the Reporting Person.
(2)	Includes 529 shares of common stock acquired by the reporting person on November 15, 2018 under the Imperva, Inc. 2011 Employee Stock Purchase Plan.
(3)	Each restricted stock unit represents a contingent right to receive one share of common stock of the Issuer upon vesting.
(4)	The restricted stock units vest as follows: 25% of the underlying shares vest one year following the vesting commencement date of August 15, 2017, with the remaining 75% vesting in equal quarterly installments over the next three years. The restricted stock units are subject to accelerated vesting in the event of a termination of employment under certain circumstances, including a termination following a change in control of the Issuer.
(5)	The Issuer has up to 30 days following vesting to settle. The actual expiration date will be immediately following settlement.

Reporting Owners
Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Hylen Christopher C/O IMPERVA, INC. 3400 BRIDGE PARKWAY REDWOOD SHORES, CA 94065	X		President and CEO

Signatures
/s/ Shulamite White, Attorney-in-Fact		11/19/2018
** 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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