Thomas R. Ertel, Director at Energy Vault Holdings, Inc. (NRGV), bought 5,450 shares at $3.37 ($18K) on 2026-03-04, disclosed to the SEC on 2026-03-05.
Open-market purchase of $18k NRGV by Director. Below the thresholds we flag for high-conviction alerts (no C-suite role, rare reversal, cluster, or A-grade history). Context: insider career grade B.
Something here stands out, but not much.
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