Summary
Updated Aug 31, 2026
George N. Mattson files SEC Form 4 reports at Xos, Inc. (XOS). 5 SEC Form 4 filings on record going back to 2024, most recently on 14 July 2026. Most recent open-market trade: bought $8K of UP on 21 May 2026. Lifetime open-market purchases: $146K. Historical track record: 5/5 stars across 4 tracked purchases.
Recent Transactions
8Every recent SEC Form 4 transaction George N. Mattson 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 | ★★★★★ (5/5) |
| Total purchases tracked | 4 |
| Purchases with forward-return data | 4 |
| 30-day win rate | 100% |
| 90-day win rate | 25% |
| Avg 5-day return | +24.24% |
| Avg 30-day return | +51.13% |
| Avg 90-day return | -4.08% |
| Best 30-day return | +65.01% |
Trading Pattern
InsiderAlpha's records for George N. Mattson go back to 2024: 5 primary Form 4 filings, an average of 1.7 per year. The typical open-market purchase is $37K (4 buys totaling $146K). The largest single buy on record is $79K of UP 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.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies George N. Mattson 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.
- Emerald Green Trust - $2.51M of XOS open-market activity in the last 12 months
- Giordano Sordoni - $198K of XOS open-market activity in the last 12 months
- Stuart N. Bernstein - $168K of XOS open-market activity in the last 12 months
- Dietmar Ostermann - $80K of XOS open-market activity in the last 12 months
- Michael Paul Richardson - $23K of XOS open-market activity in the last 12 months
- Alice K. Jackson - $18K of XOS 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 George N. Mattson?
George N. Mattson is a corporate insider of Xos, Inc. (XOS). InsiderAlpha holds 5 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has George N. Mattson submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has George N. Mattson been buying or selling stock?
Recorded transactions: 4 open-market purchases ($146K) and 0 open-market sales across all tracked filings.
How accurate is George N. Mattson's historical track record?
Across 4 tracked purchases, George N. Mattson averaged +51.1% avg 30-day return with a 100% 30-day win rate. InsiderAlpha rates the track record at 5/5 stars.
Where can I see all of George N. Mattson'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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