Arthur H. Amron - SEC Form 4 Insider Trading Activity
Summary
Updated Aug 4, 2026
Arthur H. Amron has filed 4 SEC Form 4 filings across 2 companies in the last 90 days - buying. Lifetime open-market purchases: $35K.
Profile
Arthur H. Amron is Director at MAMMOTH ENERGY SERVICES, INC. (TUSK). SEC records also connect Amron to NEPHROS INC (NEPH). Amron has reported 7 insider filings with the SEC since 2024. The most recent filing was in June 2026.
| Role | Director |
|---|---|
| Notability | 26/100 |
Board memberships
- MAMMOTH ENERGY SERVICES, INC.
- NEPHROS INC
Reported roles
- Director
- Director
Trading Pattern
InsiderAlpha's records for Arthur H. Amron go back to 2024: 7 primary Form 4 filings, an average of 2.3 per year. The typical open-market purchase is $7K (5 buys totaling $35K). The largest single buy on record is $10K of TUSK in 2026. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Career & Filing History
Every role Arthur H. Amron has reported on a Form 4, reconstructed from the filings themselves - reporting insiders must state their relationship to the issuer (officer title, director seat, or 10% ownership) on every filing.
- Director at MAMMOTH ENERGY SERVICES, INC. (TUSK) - 1 filing, 2026
- Director at MAMMOTH ENERGY SERVICES, INC. (TUSK) - 3 filings, 2024 to 2026
- Director at NEPHROS INC (NEPH) - 3 filings, 2025 to 2026
Recent Transactions
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-06-22 | TUSK | MAMMOTH ENERGY SERVICES, INC. | J - Other acquisition / disposition | 10.3K | $0.00 | |
| 2026-06-22 | TUSK | MAMMOTH ENERGY SERVICES, INC. | J - Other acquisition / disposition | 19.1K | $0.00 | |
| 2026-06-15 | TUSK | MAMMOTH ENERGY SERVICES, INC. | P - Open-market purchase | 2.0K | $3.28 | $7K |
| 2026-06-15 | TUSK | MAMMOTH ENERGY SERVICES, INC. | P - Open-market purchase | 2.5K | $3.22 | $8K |
| 2026-06-12 | NEPH | NEPHROS INC | A - Grant or award | 3.6K | $0.00 | |
| 2026-05-28 | TUSK | MAMMOTH ENERGY SERVICES, INC. | P - Open-market purchase | 3.0K | $3.25 | $10K |
| 2026-05-28 | TUSK | MAMMOTH ENERGY SERVICES, INC. | P - Open-market purchase | 2.5K | $3.24 | $8K |
| 2026-03-18 | NEPH | NEPHROS INC | A - Grant or award | 3.6K | $0.00 | |
| 2025-11-13 | NEPH | NEPHROS INC | A - Grant or award | 5.4K | $0.00 | |
| 2024-12-16 | TUSK | MAMMOTH ENERGY SERVICES, INC. | P - Open-market purchase | 1.0K | $2.97 | $3K |
Companies - Last 90 Days
- MAMMOTH ENERGY SERVICES, INC. (TUSK) - 3 filings, last 2026-06-22
- NEPHROS INC (NEPH) - 1 filing, last 2026-06-12
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades at the companies Arthur H. Amron has recently filed at. Multiple unrelated insiders buying the same stock within a short window - cluster buying - has historically been one of the strongest Form 4 signals.
- WEXFORD CAPITAL LP - $10.47M of TUSK open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
- Audax Private Credit Business, LP
- Milton C. Ault III
- BAIN CAPITAL INVESTORS LLC
- Bain Capital Life Sciences Investors, LLC
- BAKER BROS. ADVISORS LP
- BANK OF AMERICA CORP /DE/
- BANKERS LIFE & CASUALTY CO
- John F. Barry
Frequently Asked Questions
Who is Arthur H. Amron?
Arthur H. Amron is Director at MAMMOTH ENERGY SERVICES, INC. (TUSK). SEC records also connect Amron to NEPHROS INC (NEPH). Amron has reported 7 insider filings with the SEC since 2024. The most recent filing was in June 2026.…
How many SEC Form 4 filings has Arthur H. Amron submitted recently?
4 primary Form 4 filings in the last 90 days, covering 2 companies.
Has Arthur H. Amron been buying or selling stock?
Recorded transactions: 5 open-market purchases ($35K) and 0 open-market sales across all tracked filings.
Where can I see all of Arthur H. Amron's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
Learn More
Open the live Arthur H. Amron profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.