<SEC-DOCUMENT>0000936753-17-000097-index.html : 20170214
<SEC-HEADER>0000936753-17-000097.hdr.sgml : 20170214
<ACCEPTANCE-DATETIME>20170214123322
ACCESSION NUMBER:		0000936753-17-000097
CONFORMED SUBMISSION TYPE:	SC 13G
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20170214
DATE AS OF CHANGE:		20170214

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ASPEN AEROGELS INC
		CENTRAL INDEX KEY:			0001145986
		STANDARD INDUSTRIAL CLASSIFICATION:	WHOLESALE-LUMBER & OTHER CONSTRUCTION MATERIALS [5030]
		IRS NUMBER:				043559972
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-88226
		FILM NUMBER:		17605876

	BUSINESS ADDRESS:	
		STREET 1:		30 FORBES ROAD
		STREET 2:		BUILDING B
		CITY:			NORTHBOROUGH
		STATE:			MA
		ZIP:			01532
		BUSINESS PHONE:		5086911111

	MAIL ADDRESS:	
		STREET 1:		30 FORBES ROAD
		STREET 2:		BUILDING B
		CITY:			NORTHBOROUGH
		STATE:			MA
		ZIP:			01532

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ARIEL INVESTMENTS, LLC
		CENTRAL INDEX KEY:			0000936753
		IRS NUMBER:				020712418
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G

	BUSINESS ADDRESS:	
		STREET 1:		200 EAST RANDOLPH STREET
		STREET 2:		SUITE 2900
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60601
		BUSINESS PHONE:		(312) 726-0140

	MAIL ADDRESS:	
		STREET 1:		200 EAST RANDOLPH STREET
		STREET 2:		SUITE 2900
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60601

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ARIEL CAPITAL MANAGEMENT LLC
		DATE OF NAME CHANGE:	20040218

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ARIEL CAPITAL MANAGEMENT INC
		DATE OF NAME CHANGE:	19950202
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G
<SEQUENCE>1
<FILENAME>aspn.txt
<DESCRIPTION>SC13G ASPN DEC16
<TEXT>
Document 1 - file: aspn.txt

</DOCUMENT>
</SEC-DOCUMENT>