Form 4: Energy Vault CEO Boosts Stake with 55,000 Share Purchase

Energy Vault Holdings CEO Robert Piconi acquired 55,000 shares of common stock, increasing his direct beneficial ownership.

Summary

• Robert Piconi, who serves as Chief Executive Officer, Director, and a 10% Owner of Energy Vault Holdings, Inc. (NRGV), purchased 55,000 shares of the company's common stock.
• The transaction took place on August 28, 2025, at a weighted average price of $1.7057 per share.
• The shares were acquired in multiple transactions with prices ranging from $1.64 to $1.79.
• Following this purchase, Piconi directly beneficially owns 20,087,526 shares of common stock.
• Piconi also indirectly beneficially owns 4,307,946 shares through the Piconi Family 2021 Delaware Trust and another 4,307,946 shares through the Piconi 2021 Delaware Trust, for both of which he acts as investment advisor.

Sentiment

Score: 8

Explanation: The purchase of a significant number of shares by the CEO and 10% owner indicates strong insider confidence, which is generally a very positive signal for investors regarding the company's future outlook.

Positives

• CEO Robert Piconi, a Director and 10% owner, purchased a significant block of 55,000 shares, signaling strong confidence in the company's future prospects and current valuation.
• The purchase increases Piconi's direct beneficial ownership to over 20 million shares, demonstrating a substantial personal investment and alignment with shareholder interests.

Negatives

• No explicit negatives are reported in this Form 4 filing, which solely details an insider stock transaction.

Risks

• No specific risks are detailed in this Form 4 filing, as it is a report of an insider transaction rather than a comprehensive financial disclosure.

Future Outlook

This Form 4 filing does not contain explicit forward-looking statements or guidance. However, the significant insider purchase by the CEO can be interpreted as a positive signal regarding the company's future performance and strategic direction.

Management Comments

• No direct quotes or paraphrased statements from company management are provided in this Form 4 filing, which is a factual report of a transaction.

Industry Context

Insider buying, particularly by a CEO who is also a significant owner, often signals strong internal confidence in the company's strategy and future performance within its sector. For Energy Vault, operating in the renewable energy storage market, this can be a positive indicator for investors assessing the company's position and prospects in a competitive and evolving industry.

Comparison to Industry Standards

• Insider purchases, especially by top executives and significant shareholders, are generally viewed as a strong positive signal across all industries, as they align management's financial interests directly with those of shareholders.
• While specific comparable companies or projects are not detailed in this filing, a CEO increasing their stake is a common positive indicator, reflecting a belief in the company's intrinsic value and future growth, similar to actions observed in other growth-oriented technology or infrastructure companies.

Related Party Transactions

• The indirect beneficial ownership of 4,307,946 shares each is held by the Piconi Family 2021 Delaware Trust and the Piconi 2021 Delaware Trust, for which the Reporting Person serves as investment advisor. These represent related party holdings.

Stakeholder Impact

• Shareholders: Likely positive, as the CEO's increased stake signals strong confidence in the company's future and aligns management's interests with shareholder value.
• Employees: May view the CEO's personal investment as a sign of stability and belief in the company's long-term vision and strategic direction.

Next Steps

• No specific future actions, events, or milestones are mentioned in this Form 4 filing.

Key Dates

Recommendation

The significant purchase of company stock by the CEO, who is also a 10% owner, at a price range of $1.64 to $1.79, strongly suggests that management believes the stock is undervalued and has significant upside potential. This insider buying activity is a powerful signal of confidence in the company's future performance and strategic direction, making it an attractive opportunity for investors.

Keywords

Energy Vault Holdings, NRGV, Robert Piconi, Insider Buying, Stock Purchase, CEO, Director, 10% Owner, Common Stock, SEC Form 4