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
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                      	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 *

Noetzel Mark L	2. Issuer Name and Ticker or Trading Symbol

ASPEN AEROGELS INC [ ASPN ]	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 ASPEN AEROGELS, INC., 30 FORBES ROAD, BUILDING B	3. Date of Earliest Transaction (MM/DD/YYYY)

6/17/2015		
(Street)

NORTHBOROUGH, MA 01532
(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  	6/17/2015  	 	A	  	7715   (1)	A	$0.00  	15442  	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					
Stock Option (right to buy)  	$6.61  	6/17/2015  	 	A  	  	10228   	  	  (2)	6/17/2025  	Common Stock  	10228  	$0.00  	10228  	D  	 	

Explanation of Responses:	
(  1) 	The reporting person was granted restricted shares of common stock representing a portion of the annual grant of equity for service as a non-employee director pursuant to the Issuer's Non-Employee Director Compensation Policy. These restricted shares will vest on the earlier of (a) one year from the date of the grant (June 17, 2016) or (b) the day prior to the Issuer's annual meeting of stockholders to be held in 2016.	
(  2) 	The reporting person was granted options in lieu of the remaining part of the annual grant of equity for service as a non-employee director pursuant to the Issuer's Non-Employee Director Compensation Policy. The options will vest on the earlier of (a) one year from the date of the grant (June 17, 2016) or (b) the day prior to the Issuer's annual meeting of stockholders to be held in 2016.	

Reporting Owners	
Reporting Owner Name / Address	Relationships	
	Director	10% Owner	Officer	Other	
Noetzel Mark L
C/O ASPEN AEROGELS, INC.
30 FORBES ROAD, BUILDING B
NORTHBOROUGH, MA 01532	X				

Signatures		
/s/ Hannah C. Coman, Attorney-in-fact		6/18/2015	
** 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.	
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.	

LIMITED POWER OF ATTORNEY

Know all by these presents, that the undersigned hereby constitutes and appoints
John F. Fairbanks, Vice President, Chief Financial Officer and Treasurer of
Aspen Aerogels, Inc. (the "Company"), Poongs Muthukumaran, Corporate Attorney of
the Company, and John Rudy, John Condon and Hannah Coman, each of Mintz, Levin,
Cohn, Ferris, Glovsky and Popeo, P.C., signing singly, with full power of
substitution, the undersigned's true and lawful attorney-in-fact to:
(1)     execute for and on behalf of the undersigned, in the undersigned's capacity
as a director of the Company, the Form 4 to be filed in connection with the
grant of restricted shares of the Company's common stock to the undersigned on
or about June 17, 2015 (collectively, the "2015 Stock Grant Section 16 Filings")
in accordance with Section 16(a) of the Securities Exchange Act of 1934 and the
rules thereunder; and
(2)     do and perform any and all acts for and on behalf of the undersigned which
may be necessary or desirable to complete and execute the 2015 Stock Grant
Section 16 Filings and timely file such forms with the United States Securities
and Exchange Commission (the "SEC") and any stock exchange or similar authority.
The undersigned hereby grants to each such attorney-in-fact full power and
authority to do and perform any and every act and thing whatsoever requisite,
necessary, or proper to be done in the exercise of any of the rights and powers
herein granted, as fully to all intents and purposes as the undersigned might or
could do if personally present, with full power of substitution or revocation,
hereby ratifying and confirming all that such attorney-in-fact, or such
attorney-in-fact's substitute or substitutes, shall lawfully do or cause to be
done by virtue of this power of attorney and the rights and powers herein
granted.  The undersigned acknowledges that the foregoing attorneys-in-fact, in
serving in such capacity at the request of the undersigned, is not assuming, nor
is the Company assuming, any of the undersigned's responsibilities to comply
with Section 16 of the Securities Exchange Act of 1934.
This Power of Attorney shall remain in full force and effect until the 2015
Annual Stock Grant Section 16 Filings have been filed with the SEC, unless
earlier revoked by the undersigned in a signed writing delivered to the
foregoing attorneys-in-fact.
IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be
executed this 17th day of June, 2015.

By:  /s/ Mark L. Noetzel
Name:  Mark L. Noetzel