Summary
Updated Aug 31, 2026
William Wallace McMullen is Director, 10% Owner of MACH NATURAL RESOURCES LP (MNR). 6 SEC Form 4 filings on record going back to 2024, most recently on 23 March 2026. Most recent open-market trade: bought $44K of MNR on 23 March 2026. Lifetime open-market purchases: $14.35M. Historical track record: 3/5 stars across 13 tracked purchases.
Recent Transactions
13Every recent SEC Form 4 transaction William Wallace McMullen has reported, most recent first.
Track Record
InsiderAlpha computes a forward-return-based score for every insider with enough Form 4 purchase history. The metrics below reflect realized performance after each tracked open-market purchase.
| Metric | Value |
|---|---|
| InsiderAlpha rating | ★★★☆☆ (3/5) |
| Total purchases tracked | 13 |
| Purchases with forward-return data | 13 |
| 30-day win rate | 46% |
| 90-day win rate | 23% |
| Avg 5-day return | +1.11% |
| Avg 30-day return | +2.36% |
| Avg 90-day return | -4.64% |
| Best 30-day return | +16.16% |
Trading Pattern
InsiderAlpha's records for William Wallace McMullen go back to 2024: 6 primary Form 4 filings, an average of 2.0 per year. The typical open-market purchase is $1.10M (13 buys totaling $14.35M). The largest single buy on record is $4.90M of MNR in 2024. 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.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies William Wallace McMullen files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- General Partner S.A R.L. Ikav - $71.19M of MNR open-market activity in the last 12 months
- Tom L. Ward - $3.97M of MNR open-market activity in the last 12 months
- Christopher Burn - $28K of MNR open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is William Wallace McMullen?
William Wallace McMullen is a corporate insider, tracked as Director, 10% Owner of MACH NATURAL RESOURCES LP (MNR). InsiderAlpha holds 6 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did William Wallace McMullen last file a Form 4?
The most recent primary Form 4 on record is dated 23 March 2026, one of 6 filings going back to 2024.
Has William Wallace McMullen been buying or selling stock?
Recorded transactions: 13 open-market purchases ($14.35M) and 0 open-market sales across all tracked filings.
How accurate is William Wallace McMullen's historical track record?
Across 13 tracked purchases, William Wallace McMullen averaged +2.4% avg 30-day return with a 46% 30-day win rate. InsiderAlpha rates the track record at 3/5 stars.
Where can I see all of William Wallace McMullen'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.
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