Form 4: Energy Vault CFO Buys Stock, Sells Shares Under 10b5-1 Plan

Energy Vault Holdings, Inc. CFO Michael Thomas Beer acquired 50,000 shares of common stock and sold 65,000 shares under a pre-established trading plan.

Summary

• Michael Thomas Beer, Chief Financial Officer of Energy Vault Holdings, Inc. (NRGV), reported transactions on April 6, 2026.
• He acquired 50,000 shares of common stock at a price of $1.17 per share.
• Concurrently, he sold 65,000 shares of common stock at a price of $3.18 per share.
• These sales were executed under a Rule 10b5-1 trading plan adopted on December 19, 2025.
• Following these transactions, Beer beneficially owns 1,060,945 shares of common stock.
• A stock option for 50,000 shares with an exercise price of $1.17 was also noted, with vesting occurring in installments after June 30, 2025, and an expiration date of May 16, 2034.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this as a neutral filing. While the CFO acquired shares, indicating some confidence, the sale of a larger number of shares, even under a 10b5-1 plan, tempers any strong positive sentiment.

Positives

• Acquisition of 50,000 shares by the CFO indicates confidence in the company's future prospects.
• The stock option grant suggests potential for future equity participation and alignment with company performance.
• The use of a Rule 10b5-1 plan demonstrates pre-planned, systematic trading, reducing concerns about insider trading.

Negatives

• The sale of 65,000 shares, even under a 10b5-1 plan, represents a net reduction in the CFO's direct shareholding.
• The sale price of $3.18 is significantly higher than the acquisition price of $1.17, indicating a profitable exit for the sold shares.

Risks

• The sale of a substantial number of shares by a key executive could be interpreted negatively by the market, potentially impacting share price.
• While executed under a 10b5-1 plan, the net decrease in beneficial ownership might raise questions about the executive's conviction in short-term stock appreciation.

Future Outlook

The filing itself does not contain forward-looking statements or guidance. The details pertain to past transactions and existing option grants.

Management Comments

• The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on December 19, 2025.
• The stock option vested as to 25% of the underlying shares on June 30, 2025, and as to the remaining of the underlying shares in 12 substantially similar quarterly installments thereafter.

Industry Context

StockSavvy.ai notes that Form 4 filings are standard disclosures for insider transactions. The use of a Rule 10b5-1 plan is a common strategy for executives to diversify holdings or manage personal finances without creating the appearance of trading on material non-public information. The specific details of the acquisition and sale prices, however, provide a snapshot of executive sentiment at particular price points.

Stakeholder Impact

• Shareholders may view the CFO's net reduction in shares with caution, although the use of a 10b5-1 plan mitigates concerns about opportunistic selling.
• Employees with stock options may be encouraged by the CFO's acquisition of shares, but the sale of shares could also be a point of discussion.

Next Steps

• Continued monitoring of subsequent Form 4 filings from Energy Vault Holdings executives.
• Observation of the company's stock performance and operational updates to contextualize insider trading activity.

Key Dates

Recommendation

The filing details routine insider transactions under a pre-established plan. While the CFO acquired shares, the net sale of a larger quantity suggests a balanced approach rather than strong conviction for immediate upside. This type of filing typically warrants a 'hold' recommendation as it doesn't provide new strategic information or significant shifts in insider confidence that would justify a buy or sell.

Keywords

Energy Vault Holdings, NRGV, Form 4, Insider Trading, Stock Options, Rule 10b5-1, Beneficial Ownership, Michael Thomas Beer, Chief Financial Officer, Securities Transaction