ASPN

EX-99.1

2 exh_991.htm

PRESS RELEASE

EdgarFiling

EXHIBIT 99.1

Aspen Aerogels, Inc. Reports First Quarter 2026 Financial Results and Recent Business Highlights

East Providence manufacturing facility expected to have a staged restart beginning in May $175.6 million quarter-end cash balance; up from $158.6 million at year-end 2025 Secured an additional subsea pipeline award to be delivered in Q3 2026

NORTHBOROUGH, Mass., May 07, 2026 (GLOBE NEWSWIRE) -- Aspen Aerogels, Inc. (NYSE: ASPN) (“Aspen” or the “Company”), a technology leader in sustainability and electrification solutions, today announced financial results for the first quarter of 2026, and discussed recent business developments.

First Quarter 2026 Results Total revenue for the first quarter of 2026 was $37.9 million, compared to $78.7 million in the prior year period. During the first quarter of 2026, the Company received $37.6 million in cash from General Motors related to a commercial settlement, of which $3.5 million was recognized as revenue in the first quarter. The remainder has been recorded as deferred revenue, with approximately $4.9 million to be recognized as revenue quarterly through the end of 2027. Thermal barrier segment revenue was $16.3 million, compared to $48.9 million in the prior year period, reflecting a significant reduction in customer demand following changes in regulatory frameworks and incentive programs. Energy Industrial segment revenue was $21.6 million, compared to $29.8 million in the prior year period.

Net loss was $23.7 million, compared to net loss of $301.2 million in the prior year period. Results for the first quarter of 2026 included $0.4 million of restructuring and demobilization costs. Results for the first quarter of 2025 included a $286.6 million impairment charge related to the Company's previously planned second manufacturing facility in Statesboro, Georgia, and $9.8 million in restructuring and demobilization costs. Excluding these items, adjusted net loss was $23.3 million, compared to adjusted net loss of $4.8 million in the prior year period.

Net loss per share was $0.29, compared to net loss per share of $3.67 in the prior year period. Excluding the items described above, adjusted net loss per share was $0.28, compared to adjusted net loss per share of $0.06 in the prior year period.

Adjusted EBITDA was $(12.7) million, compared to $4.9 million in the prior year period.

A reconciliation of non-GAAP financial results to GAAP financial results is provided in the financial schedules that are part of this press release. An explanation of these non-GAAP financial measures is also included below under the heading “Non-GAAP Financial Measures.”

East Providence Manufacturing Facility & Supply Strategy Update On April 8, 2026, there was an explosion at Aspen’s manufacturing facility in East Providence, Rhode Island. The investigation confirmed that the event occurred in a specific high-temperature oven, resulting in damage to a portion of the facility’s production space, requiring the temporary cessation of operations. Aspen is working closely with local, state, and federal agencies to bring the facility back online safely and believes a staged restart of operations will begin in May. The final timeline will depend on the progress of our ongoing mechanical, operational, and safety reviews, as well as obtaining clearance from relevant authorities.

"We are immensely grateful that no employees were seriously injured in the incident. We are also appreciative of the professional work of first responders that night. In the time since, our team has made significant progress. Their work has been instrumental in creating a clear path forward for our East Providence facility," said Don Young, President and CEO. "We also deeply value the close cooperation of East Providence and Rhode Island public officials."

To date, the Company has utilized existing inventory and leveraged the capacity of its external manufacturing facility to help support customer demand.

Mr. Young added, “While it will take time to restore East Providence to its full capabilities, we are working closely with our external manufacturing facility to enhance its production capabilities to support both our Energy Industrial and Thermal Barrier segments. These efforts are intended to develop both near- and long-term supply flexibility, strengthening our operational resilience and reinforcing our commitment to customers.”

Recent Business Highlights & Financial Performance

Ended the quarter with cash, cash equivalents, and restricted cash of $175.6 million, compared to $158.6 million at the end of the fourth quarter 2025, highlighted by the receipt of the $37.6 million commercial settlement from General Motors and $15.6 million of debt principal payments Awarded a second subsea pipeline project with expected delivery in the third quarter of 2026 Record quarterly Thermal Barrier revenue from European OEMs

“While the first half of 2026 has be

Form 8-KFalse000114598600011459862026-02-252026-02-25iso4217:USDxbrli:sharesiso4217:USDxbrli:shares

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported):  February 25, 2026

ASPEN AEROGELS, INC.

(Exact name of registrant as specified in its charter)

Delaware001-3648104-3559972 (State or Other Jurisdiction of Incorporation)(Commission File Number)(I.R.S. Employer Identification No.)

30 Forbes Road, Building B Northborough, Massachusetts01532 (Address of Principal Executive Offices)(Zip Code)

Registrant's Telephone Number, Including Area Code: (508) 691-1111

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Securities registered pursuant to Section 12(b) of the Act: Title of each classTrading Symbol(s)Name of each exchange on which registered Common StockASPNThe New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02. Results of Operations and Financial Condition.

On February 25, 2026, Aspen Aerogels, Inc. announced its financial results for the fourth quarter and fiscal year 2025, which ended December 31, 2025, and also discussed business developments. A copy of the press release containing such announcement is attached hereto as Exhibit 99.1.

The information set forth in the press release, except for the information set forth under the headings “Financial Outlook” and “About Aspen Aerogels, Inc.,” together with the forward-looking statement disclaimer at the end of the press release, is incorporated by reference into this Item 2.02 of this Current Report on Form 8-K.

Item 7.01. Regulation FD Disclosure.

The information set forth under the headings “Financial Outlook” and “About Aspen Aerogels, Inc.,” together with the forward-looking statement disclaimer at the end of the press release, is incorporated by reference into this Item 7.01 of this Current Report on Form 8-K.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits.

Exhibit Number Description

99.1 Press Release issued by Aspen Aerogels, Inc. on February 25, 2026 104 Cover Page Interactive Data File (embedded within the Inline XBRL document)

The press release may contain hypertext links to information on our website. The information on our website is not incorporated by reference into this Current Report on Form 8-K and does not constitute a part of this Form 8-K.

The information contained in this Current Report on Form 8-K and Exhibit 99.1 attached hereto is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities under that Section, nor shall it be deemed incorporated by reference into any registration statement or other filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

ASPEN AEROGELS, INC.

Date: February 25, 2026By: /s/ Grant Thoele Name:Grant Thoele Title:  Chief Financial Officer and Treasurer

Form 8-KFalse000114598600011459862025-11-062025-11-06iso4217:USDxbrli:sharesiso4217:USDxbrli:shares

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported):  November 6, 2025

ASPEN AEROGELS, INC.

(Exact name of registrant as specified in its charter)

Delaware001-3648104-3559972 (State or Other Jurisdiction of Incorporation)(Commission File Number)(I.R.S. Employer Identification No.)

30 Forbes Road, Building B Northborough, Massachusetts01532 (Address of Principal Executive Offices)(Zip Code)

Registrant's Telephone Number, Including Area Code: (508) 691-1111

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Securities registered pursuant to Section 12(b) of the Act: Title of each classTrading Symbol(s)Name of each exchange on which registered Common StockASPNThe New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02. Results of Operations and Financial Condition.

On November 6, 2025, Aspen Aerogels, Inc. announced its financial results for the third quarter of 2025, which ended September 30, 2025, and also discussed business developments. A copy of the press release containing such announcement is attached hereto as Exhibit 99.1.

The information set forth in the press release, except for the information set forth under the headings “2025 Financial Outlook” and “About Aspen Aerogels, Inc.,” together with the forward-looking statement disclaimer at the end of the press release, is incorporated by reference into this Item 2.02 of this Current Report on Form 8-K.

Item 7.01. Regulation FD Disclosure.

The information set forth under the headings “2025 Financial Outlook” and “About Aspen Aerogels, Inc.,” together with the forward-looking statement disclaimer at the end of the press release, is incorporated by reference into this Item 7.01 of this Current Report on Form 8-K.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits.

Exhibit Number Description

99.1 Press Release issued by Aspen Aerogels, Inc. on November 6, 2025 104 Cover Page Interactive Data File (embedded within the Inline XBRL document)

The press release may contain hypertext links to information on our website. The information on our website is not incorporated by reference into this Current Report on Form 8-K and does not constitute a part of this Form 8-K.

The information contained in this Current Report on Form 8-K and Exhibit 99.1 attached hereto is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities under that Section, nor shall it be deemed incorporated by reference into any registration statement or other filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

ASPEN AEROGELS, INC.

Date: November 6, 2025By: /s/ Grant Thoele Name:Grant Thoele Title:  Chief Financial Officer and Treasurer