Reporting owner · CIK 0001576484
Hammer Joseph D
SEC Form 4 history across 1 companies, 2 transactions and 1 filings.
CEOFormer Chief Executive OfficerExpion Energy, Inc.
Open-market transaction mix100% buys2 buys · 0 sales
Available history · Aug 21, 2026 – Aug 21, 2026
Latest insider transactions
Form 4 filings from available history.| Company | Insider | Activity | Disclosed value | Filed (ET) |
|---|---|---|---|---|
XPONExpion Energy, Inc. | Hammer Joseph DCEO | P · buyDerivative securitySEC filing ↗ | $0View disclosure → | |
XPONExpion Energy, Inc. | Hammer Joseph DCEO | P · buyDerivative securitySEC filing ↗ | $20.2BView disclosure → |
Latest Form 4 facts
Quick context from source filings
Latest open-market transaction
buy at Expion Energy, Inc. on Aug 21, 2026 valued at $0.
Review SEC filingLatest sale
No open-market insider sale is available.
Monthly open-market activity
Last 1 reported months · purchases and sales
View exact monthly values
| Month | Purchases | Sales | Buy value | Sale value | Net value |
|---|---|---|---|---|---|
| Aug 2026 | 2 | 0 | $20,250,000,000.00 | $0.00 | $20,250,000,000.00 |
Net value is disclosed purchases minus sales, not profit. A dash means the value is unavailable.
Ownership and transaction size
Ownership and ticket size
Average P/S size$10.1B
Median P/S size$10.1B
Direct0
Indirect2
Aug 21, 2026buy
Filing-only signals
Deterministic matches in this insider's history
Associated companies
Companies in the disclosed reporting history
Open-market buy performance
90-day forward return on this insider's open-market purchases
Forward return is not available yet
No purchases currently have the price observations needed for a 90-day return. This may reflect incomplete price coverage or purchases that have not reached the return window.
Disclosed ownership
How reported shareholdings evolved
Non-derivative shares held after reported transactions—not stock prices or a complete portfolio.
No dated, known holdings-after observations are available for this insider in the selected profile period.
Securities and direct/indirect ownership contexts are kept separate and never summed. Joint filings may associate the same disclosed row with multiple owners. Unknown values are omitted, not treated as zero. Lines connect observations for readability; they do not establish holdings between filings, cost basis, or current ownership. Amendments and stock splits require reviewing the source.
Hammer Joseph D Insider Activity FAQ
SEC Form 4 context
Who is Hammer Joseph D?
Hammer Joseph D is a reporting owner in SEC Form 4 filings with reporting owner CIK 0001576484.
Which companies has Hammer Joseph D reported transactions for?
Expion Energy, Inc.
When was Hammer Joseph D's latest insider buy?
buy at Expion Energy, Inc. on Aug 21, 2026 valued at $0.
When was Hammer Joseph D's latest insider sale?
No open-market insider sale is available for this period.
Where can I see the original SEC filings?
Each transaction row links directly to the source SEC filing so the reported Form 4 details can be reviewed.
Are performance metrics included?
The profile shows average and median 90-day stock returns after open-market purchases when price coverage is available. These are unadjusted stock returns, not realized trading gains. Win rates, benchmark-adjusted returns and conviction scores are not calculated.