Knight David Form 4 PROOFPOINT / David Knight ownership change

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

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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^*

Knight David

(Last) (First) (Middle)

C/O PROOFPOINT, INC.

892 ROSS DRIVE

(Street)

SUNNYVALE CA 94089

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
PROOFPOINT INC [ PFPT ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
EVP/GM, Threat Sys Product Grp

3. Date of Earliest Transaction (Month/Day/Year)
12/07/2017

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	12/07/2017		M(1)		1,431	A	$36	15,305	D
Common Stock	12/07/2017		M(1)		972	A	$57.49	16,277	D
Common Stock	12/07/2017		S(1)		400(2)	D	$83.85(3)	15,877	D
Common Stock	12/07/2017		S(1)		1,200(2)	D	$85.3708(4)	14,677	D
Common Stock	12/07/2017		S(1)		1,400(2)	D	$86.0141(5)	13,277	D

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
Non-qualified Stock Option (right to buy)	$36	12/07/2017		M(1)			1,431	(6)	03/26/2024	Common Stock	1,431	$0	1,562	D
Non-qualified Stock Option (right to buy)	$57.49	12/07/2017		M(1)			972	(7)	04/06/2025	Common Stock	972	$0	12,028	D

Explanation of Responses:

1. The transactions reported on this Form 4 were effected pursuant to a 10b5-1 trading plan adopted by the reporting person on December 6, 2016.

2. Represents the aggregate of sales effected on the same day at different prices.

3. Represents the weighted average sales price per share. The shares sold at prices ranging from $83.57 to $84.12 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

4. Represents the weighted average sales price per share. The shares sold at prices ranging from $84.70 to $85.66 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

5. Represents the weighted average sales price per share. The shares sold at prices ranging from $85.71 to $86.27 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

6. The stock option vested as to 1/4th of the total number of shares on February 1, 2015 and thereafter vested and shall continue to vest as to 1/48th of the total number of shares in equal monthly installments.

7. The stock option vested as to 1/4th of the total number of shares on February 1, 2016 and thereafter vested and shall continue to vest as to 1/48th of the total number of shares in equal monthly installments.

	/s/ David Knight By Michael Yang, Attorney-In-Fact	12/11/2017
	** 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).
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