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Gregory Castaldo

Activist investor & 5%+ owner · SC 13D/13G filings

Total Filings

13

Stocks Covered

6

Latest Filing

Feb 13, 2026

Filings

N/A

22nd Century Group, Inc.

SC 13G/A · Feb 13, 2026

0.0%

0 shares

Datacentrex, Inc.

SC 13G/A · Feb 13, 2026

0.0%

0 shares

Datavault AI Inc.

SC 13G · Feb 13, 2026

0.0%

0 shares

Greenwave Technology Solutions, Inc.

SC 13G/A · Feb 13, 2026

0.0%

0 shares

Catheter Precision, Inc.

SC 13G · Feb 11, 2026

7.5%

177K shares

Datavault AI, Inc.

SC 13G · May 30, 2025

5.5%

4.6M shares

22nd Century Group, Inc

SC 13G · Apr 4, 2025

9.4%

269K shares

Datavault AI, Inc.

SC 13G/A · Feb 14, 2025

4.0%

2.3M shares

22nd Century Group Inc.

SC 13G/A · Feb 14, 2025

0.0%

0 shares

Thumzup Media Corporation

SC 13G/A · Feb 14, 2025

0.0%

0 shares

Thumzup Media Corporation

SC 13G · Nov 21, 2024

5.5%

523K shares

22Century Group Inc.

SC 13G · Oct 9, 2024

7.9%

2.5M shares

WiSA Technologies, Inc.

SC 13G · Sep 20, 2024

8.6%

640K shares