CONSENT FIRST AMENDMENT TO AMENDED AND RESTATEDLOAN AND SECURITY AGREEMENT

Exhibit 10.1

CONSENT FIRST AMENDMENT

TO

AMENDED AND RESTATED LOAN AND SECURITY AGREEMENT

This Consent and First Amendment to Amended and Restated Loan and Security Agreement (this “Amendment”) is entered into this 19th day of August, 2016 by and between SILICON VALLEY BANK (“Bank”) and ASPEN AEROGELS, INC., a Delaware corporation (“Borrower”) whose address is 30 Forbes Road, Building B, Northborough, Massachusetts 01532.

RECITALS

A. Bank and Borrower have entered into that certain Amended and Restated Loan and Security Agreement dated as of September 3, 2014 (as the same may from time to time be further amended, modified, supplemented or restated, the “Loan Agreement”).

B. Bank has extended credit to Borrower for the purposes permitted in the Loan Agreement.

C. Borrower has requested that Bank amend the Loan Agreement to (i) extend the maturity date, and (ii) make certain other revisions to the Loan Agreement as more fully set forth herein.

D. Bank has agreed to so amend certain provisions of the Loan Agreement, but only to the extent, in accordance with the terms, subject to the conditions and in reliance upon the representations and warranties set forth below.

AGREEMENT

NOW, THEREFORE, in consideration of the foregoing recitals and other good and valuable consideration, the receipt and adequacy of which is hereby acknowledged, and intending to be legally bound, the parties hereto agree as follows:

1. Definitions. Capitalized terms used but not defined in this Amendment shall have the meanings given to them in the Loan Agreement.

2. Amendment to Loan Agreement.

2.1 Section 13 (Definitions). The following term and its definition set forth in Section 13.1 is amended in its entirety and replaced with the following:

“Revolving Line Maturity Date” is November 29, 2016.

3. Limitation of Amendments.

3.1 The amendments set forth in Section 2 above are effective for the purposes set forth herein and shall be limited precisely as written and shall not be deemed to (a) be a consent to any amendment, waiver or modification of any other term or condition of any Loan Document, or (b) otherwise prejudice any right or remedy which Bank may now have or may have in the future under or in connection with any Loan Document.

3.2 This Amendment shall be construed in connection with and as part of the Loan Documents and all terms, conditions, representations, warranties, covenants and agreements set forth in the Loan Documents, except as herein amended, are hereby ratified and confirmed and shall remain in full force and effect.

4. Consent to Transactions. Borrower has notified Bank that Borrower plans to form a wholly-owned Subsidiary, Aspen Aerogels Georgia, LLC, a Georgia limited liability company (“Georgia Sub”) in order to acquire certain real and personal property in Statesboro, Bulloch County, Georgia, and in connection therewith, grant a lien on all assets of Georgia Sub to certain creditors and engage in a sale-leaseback transaction with respect to such assets, including certain real estate to be acquired from the Bullock County Development Authority (the “Subsidiary Lien”, and together with the formation of Georgia Sub, the “Transactions”). Accordingly, notwithstanding the terms of the Loan Agreement, including Section 7.5 (Encumbrance) or Section 7.7 (Distributions; Investments), the Bank hereby consents to the Transactions for such purposes as may be required under the Loan Document, and acknowledges that the Subsidiary Liens shall constitute “Permitted Liens” under the Loan Agreement and the other Loan Documents. Please note that the foregoing consent applies only to the Transactions and is not a consent to or waiver of any subsequent application of the same provision of the Loan Agreement, nor is it a waiver of any breach of any other provision of the Loan Agreement and the other Loan Documents. This consent does not establish a course of dealing upon which the Borrower may rely on in the future. This letter agreement shall constitute a Loan Document and may be executed in one or more counterparts, each of which when taken together shall constitute an original and one and the same instrument.

5. Representations and Warranties. To induce Bank to enter into this Amendment, Borrower hereby represents and warrants to Bank as follows:

5.1 Immediately after giving effect to this Amendment (a) the representations and warranties contained in the Loan Documents are true, accurate and complete in all material respects as of the date hereof (except to the extent such representations and warranties relate to an earlier date, in which case they are true and correct as of such date), and (b) no Event of Default has occurred and is continuing;

5.2 Borrower has the power and authority to execute and deliver this Amendment and to perform its obligations under the Loan Agreement, as amended by this Amendment;

5.3 The organizational documents of Borrower delivered to Bank on the Effective Date remain true, accurate and complete and have not been amended, supplemented or restated and are and continue to be in full force and effect;

5.4 The execution and delivery by Borrower of this Amendment and the performance by Borrower of its obligations under the Loan Agreement, as amended by this Amendment, have been duly authorized;

5.5 The execution and delivery by Borrower of this Amendment and the performance by Borrower of its obligations under the Loan Agreement, as amended by this Amendment, do not and will not contravene (a) any law or regulation binding on or affecting Borrower, (b) any contractual restriction with a Person binding on Borrower, (c) any order, judgment or decree of any court or other governmental or public body or authority, or subdivision thereof, binding on Borrower, or (d) the organizational documents of Borrower;

5.6 The execution and delivery by Borrower of this Amendment and the performance by Borrower of its obligations under the Loan Agreement, as amended by this Amendment, do not require any order, consent, approval, license, authorization or validation of, or filing, recording or registration with, or exemption by any governmental or public body or authority, or subdivision thereof, binding on Borrower, except as already has been obtained or made; and

5.7 This Amendment has been duly executed and delivered by Borrower and is the binding obligation of Borrower, enforceable against Borrower in accordance with its terms, except as such enforceability may be limited by bankruptcy, insolvency, reorganization, liquidation, moratorium or other similar laws of general application and equitable principles relating to or affecting creditors’ rights.

6. Ratification of Perfection Certificate. Borrower hereby ratifies, confirms and reaffirms, all and singular, the terms and disclosures contained in a certain Perfection Certificate dated as of August 31, 2014 delivered by Borrower to Bank, and acknowledges, confirms and agrees the disclosures and information Borrower provided to Bank in said Perfection Certificate have not changed, as of the date hereof.

7. No Defenses of Borrower. Borrower hereby acknowledges and agrees that Borrower has no offsets, defenses, claims, or counterclaims against Bank with respect to the Obligations, or otherwise, and that if Borrower now has, or ever did have, any offsets, defenses, claims, or counterclaims against Bank, whether known or unknown, at law or in equity, all of them are hereby expressly WAIVED and Borrower hereby RELEASES Bank from any liability thereunder.

8. Integration. This Amendment and the Loan Documents represent the entire agreement about this subject matter and supersede prior negotiations or agreements. All prior agreements, understandings, representations, warranties, and negotiations between the parties about the subject matter of this Amendment and the Loan Documents merge into this Amendment and the Loan Documents.

9. Counterparts. This Amendment may be executed in any number of counterparts and all of such counterparts taken together shall be deemed to constitute one and the same instrument.

10. Fees and Expenses. Borrower agrees to promptly pay Bank (i) a fully earned, non-refundable amendment fee in an amount equal to Twelve Thousand Five Hundred Dollars ($12,500) on the date of this Amendment, and (ii) upon receipt of an invoice, Bank’s legal fees and expenses incurred in connection with this Amendment. Borrower agrees to execute such other documents and instruments as Bank may reasonably request.

11. Effectiveness. This Amendment shall be deemed effective upon (a) the due execution and delivery to Bank of this Amendment by each party hereto, and (b) Bank’s receipt of the Acknowledgement of Amendment and Reaffirmation of Guaranty substantially in the form attached hereto as Schedule 1, duly executed and delivered by the Guarantor.

[Signature page follows.]

IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be duly executed and delivered as of the date first written above.

Schedule 1

ACKNOWLEDGMENT OF AMENDMENT

AND REAFFIRMATION OF GUARANTY

Section 1. Guarantor hereby acknowledges and confirms that it has reviewed and approved the terms and conditions of the Consent and First Amendment to Amended and Restated Loan and Security Agreement dated as of even date herewith (“the “Amendment”).

Section 2. Guarantor hereby consents to the Amendment and agrees that the Guaranty relating to the Obligations of Borrower under the Loan Agreement shall continue in full force and effect, shall be valid and enforceable and shall not be impaired or otherwise affected by the execution of the Amendment or any other document or instruction delivered in connection herewith.

Section 3. Guarantor represents and warrants that, after giving effect to the Amendment, all representations and warranties contained in the Guaranty are true, accurate and complete as if made the date hereof.

Dated as of August 19, 2016.