CEO Robert Piconi Buys 7,500 Shares of Energy Vault Amid Volatile Volumes—A Subtle Signal of Long‑Term Confidence?

Insider Buying Spikes Amid Volatile Volumes

On February 26, 2026, CEO Robert Piconi purchased 7,500 shares of Energy Vault Holdings at $3.26 per share—just above the close of $3.09. While the dollar amount is modest relative to the company’s market cap of $500 million, the move comes at a time of heightened social‑media chatter (buzz ≈ 231 %) and a positive sentiment score (+38). Investors should read this transaction not as a standalone signal but as part of a pattern of modest, frequent buying and selling that characterizes Piconi’s insider activity over the past year.

What the Pattern Means for Investors

Piconi’s most recent trade follows a series of small‑volume purchases and sales that have kept his holdings hovering around 20 million shares, roughly 4 % of the float. The CEO’s actions are consistent with a “market‑making” approach: buying when prices dip to $2–$4 and selling when the stock climbs toward its 52‑week high of $6.35. For value‑seeking investors, this suggests that Piconi sees a longer‑term upside despite the current 35 % year‑to‑date decline. The recent $135.5 million financing round and positive Q4 outlook support the view that Energy Vault’s gravity‑based storage platform could become a key player in the renewable energy transition. However, the negative P/E and the large price swings caution that the stock remains highly speculative.

Profiling CEO Robert Piconi

Piconi has been a steady presence on the insider‑trading register since at least September 2025. His trades show a disciplined approach: he rarely makes large, single‑handed moves, instead opting for incremental purchases that average between $1.5 and $4 per share. Historically, he has sold only when the price rises above $4.60, a pattern that aligns with the company’s volatility. The CEO also holds significant amounts in two Delaware trusts (≈ 4.3 million shares each), indicating a long‑term commitment to the firm’s vision. This combination of modest trading and substantial trust holdings signals a confidence in Energy Vault’s future while keeping personal risk exposure limited.

Bottom Line for the Market

The February 26 buy is a small yet timely reinforcement of the CEO’s long‑term belief in Energy Vault’s technology. For investors, the key takeaway is that insider activity remains relatively neutral—neither a bullish endorsement nor a warning sign. Given the company’s recent capital raise, promising product pipeline, and the broader shift toward renewable energy infrastructure, the stock’s current price below its 52‑week high could present an entry point for those willing to accept the inherent volatility of a high‑growth, early‑stage energy company.