Skip to main content
Signal8
Mandanas Mary Beth profile photo

Mary Beth Mandanas

CIK: 0001857599

Transaction Breakdown

Open Market Buys (P)2 (50.0%)

High conviction signal

Open Market Sales (S)0 (0.0%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)2 (50.0%)

Compensation grants

Other (G, F, J, C, D, …)0 (0.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

Energy Vault Holdings, Inc. logo
NRGV

Energy Vault Holdings, Inc.

Director

Discretionary Trading P&L

Holdings

Transaction History (4 total)

  • Energy Vault Holdings, Inc. logo
    NRGV

    Energy Vault Holdings, Inc.

    May 29, 2026
    Award(A)
    Direct
    22K shares-
  • Energy Vault Holdings, Inc. logo
    NRGV

    Energy Vault Holdings, Inc.

    Mar 25, 2026
    Purchase(P)
    Direct
    5K shares at avg. $3.65$18K
  • Energy Vault Holdings, Inc. logo
    NRGV

    Energy Vault Holdings, Inc.

    Sep 16, 2025
    Award(A)
    Direct
    161.1K shares-
  • Energy Vault Holdings, Inc. logo
    NRGV

    Energy Vault Holdings, Inc.

    Sep 11, 2025
    Purchase(P)
    Direct
    10K shares at avg. $2.05$21K

1-4 of 4

About Mandanas Mary Beth

Mandanas Mary Beth (SEC CIK 0001857599) files insider reports with the SEC as Director of Energy Vault Holdings, Inc. (NRGV).

Signal8 holds 4 ownership filings by Mandanas Mary Beth, all Form 4s, filed between Sep 12, 2025 and Jun 1, 2026. Those filings report 4 transactions, from Sep 11, 2025 to May 29, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Mandanas Mary Beth's filings is in WESTLAKE VILLAGE, CA.

Recent filings by Mandanas Mary Beth

  • May 29, 2026: Grant or award of NRGV shares (Form 4, code A).
  • Mar 25, 2026: Open-market purchase of NRGV shares (Form 4, code P).
  • Sep 16, 2025: Grant or award of NRGV shares (Form 4, code A).
  • Sep 11, 2025: Open-market purchase of NRGV shares (Form 4, code P).

Other insiders filing for Energy Vault Holdings, Inc. (NRGV)

How to read Form 4 transaction codes