# EDGAR Filing Document

**Accession Number:** 0001145986
**File Stem:** 0001209191-23-013357
**Filing Date:** 2023-2
**Character Count:** 9159
**Document Hash:** acfe3fb6fae6d2876e27da207ffb68bf
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001209191-23-013357.hdr.sgml**: 20230227

**ACCESSION NUMBER**: 0001209191-23-013357

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20230223

**FILED AS OF DATE**: 20230227

**DATE AS OF CHANGE**: 20230227

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Landes Gregg
- **CENTRAL INDEX KEY:** 0001731877

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-36481
- **FILM NUMBER:** 23677178

**MAIL ADDRESS:**
- **STREET 1:** C/O ASPEN AEROGELS, INC.
- **STREET 2:** 30 FORBES ROAD, BUILDING B
- **CITY:** NORTHBOROUGH
- **STATE:** MA
- **ZIP:** 01532
**ISSUER**: 

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

**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

## Ex-24

```
<PRE>
POWER OF ATTORNEY

 Know all by these presents, that the undersigned hereby constitutes
and appoints Virginia H. Johnson, Chief Legal Officer, General Counsel
and Corporate Secretary of Aspen Aerogels, Inc. (the "Company"), and
John Rudy, Nishant Dharia, Amanda Mei, Michael Goldberg and
Brenda Meyette 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 18th day of July 2022.

By: /s/ Gregg R. Landes
Name: Gregg R. Landes

</PRE>
```

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

[ ] Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Landes Gregg<br><sub>(Last) (First) (Middle)</sub><br>C/O ASPEN AEROGELS, INC.<br>30 FORBES ROAD, BUILDING B<br><sub>(Street)</sub><br>NORTHBOROUGH, MA 01532<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2023-02-23 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [ ] 10% Owner<br>[X] Officer (give title below) [ ] Other (specify below)<br>_SVP, Operations and Strat Dev_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>ASPEN AEROGELS INC [ ASPN ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Common Stock | 2023-02-23 |  | F |  | 495<sup>(1)</sup> | D | $11.32 | 111259<sup>(2)</sup> | D |  |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

---

### Footnotes:

(1) Shares withheld by Registrant to satisfy the minimum statutory tax withholding requirements on vesting of Restricted Stock Units ("RSUs").

(2) Represents 50,319 shares of Common Stock, 7,350 RSUs and 53,590 shares of Restricted Stock.

**Remarks:**
Power of Attorney is attached hereto as Exhibit 24.

**Signature:** /s/ Virginia H. Johnson, Attorney-in-Fact  
**Date:** 2023-02-27

### Remarks:

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 Number.**