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 *

Young Donald R	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
__ X __ Officer (give title below)      _____ Other (specify below)
President and CEO	
(Last)          (First)          (Middle)

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

9/10/2014		
(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  	9/10/2014  	 	A	  	27551   (1)	A	$0.00  	38127   (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					
Stock Option (right to buy)  	$10.78  	9/10/2014  	 	A  	  	259671   	  	  (3)	9/10/2024  	Common Stock  	259671  	$0.00  	259671  	D  	 	

Explanation of Responses:	
(  1) 	Each restricted stock unit ("RSU") represents the right to receive one share of common stock upon vesting. The RSU vests as to 25% of the shares on September 10, 2015 and as to an additional 25% of the shares each successive twelve-month period thereafter, until September 10, 2018.	
(  2) 	Represents 10,576 shares of common stock and 27,551 RSUs.	
(  3) 	The option vests as to 25% of the shares on September 10, 2015 and as to an additional 25% of the shares each successive twelve-month period thereafter, until September 10, 2018.	

Reporting Owners	
Reporting Owner Name / Address	Relationships	
	Director	10% Owner	Officer	Other	
Young Donald R
C/O ASPEN AEROGELS, INC.
30 FORBES ROAD, BUILDING B
NORTHBOROUGH, MA 01532	X		President and CEO		

Signatures		
/s/ Poongunran Muthukumaran, Attorney-in-fact		9/12/2014	
** 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).	
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.	

Exhibit 24.1

                               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") and Susan W. White, Vice
President, Finance and Corporate Strategy of the Company, Poongunran
Muthukumaran, Corporate Attorney of the Company and Sahir Surmeli, John Rudy,
John Condon, Hannah Coman and Esther Cho, 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, forms and authentication
          documents for EDGAR Filing Access;

     (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 any such
          forms and authentication documents;

     (3)  execute for and on behalf of the undersigned, in the undersigned's
          capacity as an officer, director and/or 10% shareholder of the
          Company, Forms 3, 4 and 5 in accordance with Section 16(a) of the
          Securities Exchange Act of 1934 and the rules thereunder;

     (4)  do and perform any and all acts for and on behalf of the undersigned
          which may be necessary or desirable to complete and execute any such
          Form 3, 4 or 5 and timely file such form with the United States
          Securities and Exchange Commission and any stock exchange or similar
          authority; and

     (5)  take any other action of any type whatsoever in connection with the
          foregoing which, in the opinion of such attorney-in-fact, may be of
          benefit to, in the best interest of, or legally required by, the
          undersigned, it being understood that the documents executed by such
          attorney-in-fact, on behalf of the undersigned pursuant to this Power
          of Attorney, shall be in such form and shall contain such terms and
          conditions as such attorney-in-fact may approve in such
          attorney-in-fact's discretion.

     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
undersigned is no longer required to file Forms 3, 4 and 5 with respect to the
undersigned's holdings of and transactions in securities issued by the Company,
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 19 day of August, 2014.

                                               By: /s/ Donald R. Young
                                               -----------------------
                                               Name: Donald R. Young