NRGV furnishes Investor Day Exhibit 99.1 under Item 7.01 8-K

Rhea-AI Filing Summary

Energy Vault Holdings (NRGV) furnished an Analyst and Investor Day presentation via an 8-K under Item 7.01. The slide deck, provided as Exhibit 99.1, contains forward-looking statements and corresponding cautionary disclosures.

The furnished status means it is not deemed filed under the Exchange Act and is not subject to Section 18 liabilities, nor incorporated by reference unless specifically stated.

8-K Event Classification

2 items: 7.01, 9.01

2 items

Item 7.01 Regulation FD Disclosure Disclosure

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

Item 9.01 Financial Statements and Exhibits Exhibits

Financial statements, pro forma financial information, and exhibit attachments filed with this report.

Understanding 8-K Material Events →

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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): October 29, 2025

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 7.01 Regulation FD Disclosure.

On October 29, 2025, Energy Vault Holdings, Inc. (the “Company”) hosted a virtual Analyst and Investor Day. A copy of the investor presentation used during the event is furnished herewith as Exhibit 99.1 and is incorporated herein by reference. The investor presentation contains forward-looking statements regarding the Company, and includes cautionary statements identifying important factors that could cause actual results to differ materially from those anticipated.

The information in this Current Report on Form 8-K and Exhibit 99.1 is being furnished pursuant to Item 7.01 of Form 8-K and shall not be deemed to be “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 it be deemed incorporated by reference in any filing made by the Company under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits:

Exhibit No.						Description
99.1						Investor Presentation, dated as of October 29, 2025
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: October 29, 2025			By:			/s/ Michael Beer
						Name: Michael Beer
						Chief Financial Officer

FAQ

What did Energy Vault (NRGV) announce in this 8-K?

The company furnished its Analyst and Investor Day presentation as Exhibit 99.1 under Item 7.01.

Is the Analyst Day presentation considered filed with the SEC?

No. It was furnished under Item 7.01 and is not deemed filed or subject to Section 18 liabilities.

What exhibit was included with the 8-K for NRGV?

Exhibit 99.1, the Investor Presentation dated October 29, 2025.

Does the presentation include forward-looking statements?

Yes. It includes forward-looking statements along with cautionary statements about factors that could cause actual results to differ.

When did Energy Vault host the Analyst and Investor Day?

On October 29, 2025.

Can the presentation be incorporated by reference into other filings?

Only if a future filing expressly incorporates it by specific reference.