Energy Vault boosts liquidity and starts major Texas storage project

Energy Vault Holdings, Inc. reported that its cash and liquidity grew by approximately 65% during the fourth quarter of 2025 to over $100 million, which was above the high end of its guidance range.

Rhea-AI Filing Summary

Energy Vault Holdings, Inc. reported that its cash and liquidity grew by approximately 65% during the fourth quarter of 2025 to over $100 million, which was above the high end of its guidance range. This indicates a significantly stronger short-term funding position than the company had previously forecast.

The company also announced the start of construction of the SOSA Energy Center, a 150 MW/300 MWh battery energy storage system in Madison County, Texas, and provided updates on its Asset Vault portfolio. Together, the liquidity improvement and new project highlight both stronger finances and continued development activity in its energy storage business.

Positive

• Liquidity rose sharply, with cash and liquidity up approximately 65% in Q4 2025 to over $100 million, above the high end of company guidance.
• Large new project underway, as construction has started on the SOSA Energy Center, a 150 MW/300 MWh battery energy storage system in Madison County, Texas.

Negative

• None.

Insights

Equity and credit analyst

Energy Vault reports a 65% liquidity jump and starts a large Texas storage project.

Energy Vault Holdings, Inc. disclosed that cash and liquidity increased by approximately 65% in the fourth quarter of 2025 to over $100 million, above the high end of its guidance range. This suggests the company ended the year with a stronger cash position than previously anticipated, which can support operations, project execution, and potential growth spending.

The company also began construction of the SOSA Energy Center, a 150 MW/300 MWh battery energy storage system in Madison County, Texas, while providing updates on its Asset Vault portfolio. This combination of improved liquidity and active project build-out indicates that the business is progressing both financially and operationally based on the information provided for the quarter ended in Q4 2025.

8-K Event Classification

Item 7.01 — Regulation FD Disclosure

1 item

Item 7.01 Regulation FD Disclosure Disclosure

Material non-public information disclosed under Regulation Fair Disclosure, often investor presentations or guidance.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What liquidity update did Energy Vault Holdings (NRGV) provide?

Energy Vault Holdings reported that its cash and liquidity increased by approximately 65% during the fourth quarter of 2025 to over $100 million, which was above the high end of its guidance range.

How much did Energy Vault’s cash and liquidity increase in Q4 2025?

During the fourth quarter of 2025, Energy Vault’s cash and liquidity increased by approximately 65%, reaching over $100 million.

What new project did Energy Vault Holdings (NRGV) announce in Texas?

Energy Vault announced the start of construction of the SOSA Energy Center, a 150 MW/300 MWh battery energy storage system located in Madison County, Texas.

Did Energy Vault’s Q4 2025 liquidity exceed its prior guidance?

Yes. The company stated that cash and liquidity exceeded the high end of its guidance range by ending the quarter at over $100 million.

What is the SOSA Energy Center project size for Energy Vault?

The SOSA Energy Center is a battery energy storage project with a capacity of 150 MW/300 MWh in Madison County, Texas.

What else did Energy Vault disclose about its business in this update?

Along with liquidity and project news, Energy Vault provided updates on its Asset Vault portfolio, reflecting ongoing activity in its energy storage assets.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 01/06/2026 - 07:29 AM Learn about SEC filing dates

0001828536FALSE00018285362026-01-052026-01-05

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): January 5, 2026

Energy Vault Holdings, Inc.

(Exact name of registrant as specified in its charter)

Delaware

001-39982

85-3230987

(State or other jurisdiction of incorporation)

(Commission File Number)

(IRS Employer Identification No.)

4165 East Thousand Oaks Blvd., Suite 100 Westlake Village, California						91362
(Address of principal executive offices)						(Zip Code)

Registrant’s telephone number, including area code: (805) 852-0000

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 (see General Instruction A.2. below):

☐    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 class

Trading symbol

Name of each exchange on which registered

Common Stock, par value $0.0001 per share

NRGV

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 (17 CFR §230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR §240.12b-2).

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 January 5, 2026, Energy Vault Holdings, Inc. (the “Company”) issued a press release that, among other things, provided an update regarding the Company’s cash and liquidity, including that cash and liquidity increased by approximately 65% during the fourth quarter of 2025 to over $100 million (above the high end of the Company’s guidance range).

Item 7.01 Regulation FD Disclosure.

On January 5, 2026, the Company issued a press release announcing, among other things, the start of construction of the SOSA Energy Center, a 150 MW/300 MWh battery energy storage system located in Madison County, Texas, as well as providing updates regarding the Company’s Asset Vault portfolio. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K.

The information furnished pursuant to this Item 7.01 (including Exhibit 99.1) 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 of that section, nor shall such information be deemed incorporated by reference into any filing under the Securities Act of 1933, as amended (the “Securities Act”), or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits:

Exhibit No.						Description
99.1						Press release dated as of January 5, 2026
104						Cover page from this Current Report on Form 8-K, formatted in Inline XBRL

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.

						ENERGY VAULT HOLDINGS, INC.
Date: January 6, 2026			By:			/s/ Michael Beer
						Name: Michael Beer
						Chief Financial Officer