Form 4: Energy Vault CEO Buys 50,000 Shares

Energy Vault Holdings CEO Robert Piconi purchased 50,000 shares of common stock, signaling confidence in the company's future.

Summary

• Robert Piconi, Chief Executive Officer, Director, and 10% Owner of Energy Vault Holdings, Inc. (NRGV), acquired 50,000 shares of common stock.
• The transaction occurred on September 17, 2025, at a weighted average price of $2.3024 per share.
• The shares were purchased in multiple transactions at prices ranging from $2.28 to $2.33 per share.
• This purchase was executed pursuant to a Rule 10b5-1(c) plan.
• Following this transaction, Piconi directly owns 20,182,384 shares and indirectly owns 8,615,892 shares through the Piconi 2021 Delaware Trust and Piconi Family 2021 Delaware Trust, for which he serves as investment advisor.

Sentiment

Score: 8

Explanation: The purchase of a significant number of shares by the CEO, who is also a Director and 10% owner, is a strong positive signal of confidence in the company's future prospects and valuation.

Positives

• The Chief Executive Officer, a Director, and a 10% owner, purchased a significant number of shares (50,000), indicating strong confidence in the company's future prospects and valuation.
• The transaction was executed under a Rule 10b5-1(c) plan, which suggests a pre-planned investment strategy rather than a reaction to immediate market events, enhancing transparency.

Future Outlook

This filing does not contain explicit forward-looking statements or guidance, but the insider purchase implicitly signals management's positive outlook on the company's future performance and valuation.

Management Comments

• The purchase of 50,000 shares by CEO Robert Piconi demonstrates a strong vote of confidence in Energy Vault Holdings' current valuation and future strategic direction.

Industry Context

Insider buying, especially by a CEO and significant owner, is generally viewed by the market as a positive signal, suggesting that management believes the company's stock is undervalued or poised for future growth, potentially outperforming peers in the energy storage sector.

Corporate Governance

Stakeholder Impact

• Shareholders may view this insider purchase as a positive indicator of management's belief in the company's value and future performance, potentially increasing investor confidence.

Next Steps

• No specific future actions or milestones are mentioned in this insider transaction report.

Key Dates

Recommendation

The significant purchase of common stock by the CEO, who is also a a Director and 10% owner, signals strong insider confidence in Energy Vault Holdings' future. Such a move often suggests that management believes the stock is undervalued or has substantial growth potential, making it an attractive investment opportunity.

Keywords

Energy Vault Holdings, NRGV, Robert Piconi, CEO, Insider Buying, Stock Purchase, Form 4, Beneficial Ownership, Rule 10b5-1