Summary
Updated Aug 31, 2026
Keith R. Larson is Director of NWPX Infrastructure, Inc. (NWPX). 7 SEC Form 4 filings on record going back to 2025, most recently on 25 August 2026. Most recent open-market trade: sold $138K of NWPX on 25 August 2026. Lifetime open-market purchases: $149K. Lifetime open-market sales: $283K. Historical track record: 5/5 stars across 3 tracked purchases.
Recent Transactions
7Every recent SEC Form 4 transaction Keith R. Larson 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 | 3 |
| Purchases with forward-return data | 3 |
| 30-day win rate | 100% |
| 90-day win rate | 100% |
| Avg 5-day return | +5.72% |
| Avg 30-day return | +52.07% |
| Avg 90-day return | +25.62% |
| Best 30-day return | +87.15% |
Trading Pattern
InsiderAlpha's records for Keith R. Larson go back to 2025: 7 primary Form 4 filings, an average of 3.5 per year. The typical open-market purchase is $50K (3 buys totaling $149K). The largest single buy on record is $50K of ASTS in 2025. Sales side: 2 recorded sales totaling $283K, so the filing history runs sell-heavy by dollar value. 5 recorded transactions carry a Rule 10b5-1 flag, meaning they were pre-scheduled under a written trading plan rather than discretionary.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Keith R. Larson 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.
- Scott J. Montross - $2.35M of NWPX open-market activity in the last 12 months
- Miles Brittain - $971K of NWPX open-market activity in the last 12 months
- Michael Wray - $499K of NWPX open-market activity in the last 12 months
- Megan A. Kendrick - $363K of NWPX open-market activity in the last 12 months
- Amanda Julian - $250K of NWPX open-market activity in the last 12 months
- Aaron Wilkins - $185K of NWPX 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 Keith R. Larson?
Keith R. Larson is a corporate insider, tracked as Director of NWPX Infrastructure, Inc. (NWPX). InsiderAlpha holds 7 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Keith R. Larson submitted recently?
3 primary Form 4 filings in the last 90 days, covering 1 company.
Has Keith R. Larson been buying or selling stock?
Recorded transactions: 3 open-market purchases ($149K) and 2 open-market sales ($283K) across all tracked filings.
How accurate is Keith R. Larson's historical track record?
Across 3 tracked purchases, Keith R. Larson averaged +52.1% 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 Keith R. Larson'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
Follow Keith R. Larson and every insider like them
A free account opens the full scored daily plan and every past day, a watchlist for any ticker, and 3 months of price history on every company page. No card.
Free plan available · Paid plans start with a 7-day free trial