Updated Jul 16, 2026
Miller Charles S. is a corporate insider tracked by InsiderAlpha. No SEC Form 4 filings recorded in the last 90 days. Lifetime open-market purchases: $5K. Lifetime open-market sales: $1.97M. Historical track record: 2/5 stars across 4 tracked purchases.
InsiderAlpha computes a forward-return-based score for every insider with enough Form 4 purchase history. The metrics below reflect realised performance after each tracked open-market purchase.
| InsiderAlpha rating | ★★☆☆☆ (2/5) |
|---|---|
| Total purchases tracked | 4 |
| Purchases with forward-return data | 4 |
| 30-day win rate | 5000% |
| 90-day win rate | 10000% |
| Avg 5-day return | +571.20% |
| Avg 30-day return | +390.72% |
| Avg 90-day return | +1429.20% |
| Best 30-day return | +878.60% |
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-02-10 | FAST | FASTENAL CO | P — Open-market purchase | 20 | $81.45 | $2K |
| 2026-02-10 | FAST | FASTENAL CO | P — Open-market purchase | 20 | $73.61 | $1K |
| 2026-01-27 | FAST | FASTENAL CO | P — Open-market purchase | 20 | $39.15 | $783 |
| 2026-01-27 | FAST | FASTENAL CO | P — Open-market purchase | 20 | $39.15 | $783 |
| 2024-11-15 | FAST | FASTENAL CO | S — Open-market sale | 18.1K | $83.91 | $1.52M |
| 2024-11-15 | FAST | FASTENAL CO | M — Option exercise | 18.1K | $38.00 | $688K |
| 2024-11-15 | FAST | FASTENAL CO | S — Open-market sale | 5.4K | $83.95 | $451K |
| 2024-11-15 | FAST | FASTENAL CO | M — Option exercise | 5.4K | $48.00 | $258K |
Miller Charles S. is a corporate insider — currently tracked as Senior EVP-Sales. InsiderAlpha tracks every SEC Form 4 filing in real time.
Recorded transactions: 4 open-market purchases ($5K) and 2 open-market sales ($1.97M) across all tracked filings.
Across 4 tracked purchases, Miller Charles S. averaged +390.7% avg 30-day return with a 5000% 30-day win rate. InsiderAlpha rates the track record at 2/5 stars.
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.
Open the live Miller Charles S. profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.