Davidson Charles E
- SEC CIK
- 0001001391
In the past year, 1 open-market purchase filing worth $10.5M and no sales.
Current role at each company
- NEPH Nephros Inc10% Owneras of Sep 16, 2026
- TUSK Mammoth Energy Services, Inc.Chief Business Officeras of Jun 22, 2026
Open-market trades in the past year
Open-market purchases (P) and sales (S) filed in the last 365 days, not counting derivative securities or duplicate filings. Values leave out price outliers.
- Bought
- $10.5M
- 1 filing
- Sold
- –
- 0 filings
- Net
- +$10.5M
- Bought minus sold
- Companies
- 1
- With open-market trades
Trades
Every Form 4 that lists Davidson Charles E as a reporting owner, including filings made jointly with others, grouped by company. Each row adds up one type of transaction in one filing. Only open-market purchases (P) and sales (S) are shown by default.
TUSK Mammoth Energy Services, Inc.
Chief Business Officer4 trades
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Jun 22, 2026 (view filing)4:26 PM ET | Jun 17 | 5 days | Davidson Charles E and 3 othersChief Business Officer | PPurchase | +4.02M | $2.60 | +$10.5M | +60.9%10.6M after | |
| Jun 21, 2022 (view filing)4:32 PM ET | Jun 16-17 | 5 days | Davidson Charles E and 3 othersDirector, 10% Owner | PPurchase | +45.4K | $2.14 | +$97.0K | +0.2%22.4M after | 2 lots |
| Jun 15, 2022 (view filing)4:37 PM ET | Jun 13-15 | 2 days | Davidson Charles E and 3 othersDirector, 10% Owner | PPurchase | +50.8K | $2.31 | +$117.3K | +0.2%22.4M after | 3 lots |
| Jun 10, 2022 (view filing)4:34 PM ET | Jun 8-10 | 2 days | Davidson Charles E and 3 othersDirector, 10% Owner | PPurchase | +97.8K | $2.47 | +$241.4K | +0.4%22.3M after | 3 lots |