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 * Morris Gregory Colburn	2. Issuer Name and Ticker or Trading Symbol ENTEGRIS INC [ ENTG ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director                      _____ 10% Owner __ X __ Officer (give title below)      _____ Other (specify below) Sr.VP.Chief Commerical Officer
(Last)          (First)          (Middle) 22330 WYBENGA LANE	3. Date of Earliest Transaction (MM/DD/YYYY) 12/3/2014
(Street) NUEVO, CA 92567 (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	12/3/2014		M		7136	A	$8.76	46878	D
Common Stock	12/3/2014		F		5520	D	$13.75	41358	D
Common Stock	12/3/2014		M		7057	A	$9.27	48415	D
Common Stock	12/3/2014		F		5622	D	$13.75	42793	D
Common Stock	12/3/2014		M		11843	A	$9.88	54636	D
Common Stock	12/3/2014		F		9763	D	$13.75	44873	D
Common Stock	12/4/2014		S		5131	D	$13.7037   (1)	39742	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
Employee Stock Option (Right to Buy)	$8.76	12/3/2014		M			7136	(2)	2/19/2018	Common Stock	7136	(5)	7136	D
Employee Stock Option (Right to Buy)	$9.27	12/3/2014		M			7057	(3)	2/19/2019	Common Stock	7057	(5)	14115	D
Employee Stock Option (Right to Buy)	$9.88	12/3/2014		M			11843	(4)	2/19/2020	Common Stock	11843	(5)	35529	D

Explanation of Responses:
( 1)	The price reported in column 4 is a weighted average price reported in reliance on a letter from the Office of Chief Counsel, Securities and Exchange Commission's Division of Corporate Finance to the Society of Corporate Secretaries & Corporate Governance Professionals dated June 25, 2008. These shares were sold in multiple transactions at prices ranging from $13.70 to $13.71, inclusive. The reporting person undertakes to provide Entegris, Inc., any shareholder of Entegris, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.
( 2)	This option vests in four equal annual installments starting on February 19, 2012 and thereafter on February 19, 2013, February 19, 2014 and February 19, 2015.
( 3)	The option vests in four equal annual installments starting on February 19, 2013 and thereafter on February 19, 2014, February 19, 2015 and February 19, 2016.
( 4)	The option vests in four equal annual installments starting on February 19, 2014 and thereafter on February 19, 2015, February 19, 2016 and February 19, 2017.
( 5)	This option was granted pursuant to an employee stock option plan that provides for the grant of options in consideration of services as an employee.

Reporting Owners
Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Morris Gregory Colburn 22330 WYBENGA LANE NUEVO, CA 92567			Sr.VP.Chief Commerical Officer

Signatures
/s/ Peter W. Walcott, Attorney-In-Fact for Gregory C. Morris		12/5/2014
** 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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