Updated Jul 16, 2026
Williamson Robert F III is a corporate insider tracked by InsiderAlpha. No SEC Form 4 filings recorded in the last 90 days. Lifetime open-market purchases: $43K. Historical track record: 2/5 stars across 3 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 | 3 |
| Purchases with forward-return data | 3 |
| 30-day win rate | 3333% |
| 90-day win rate | 3333% |
| Avg 5-day return | +972.58% |
| Avg 30-day return | +142.11% |
| Avg 90-day return | +2385.08% |
| Best 30-day return | +2594.34% |
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2025-11-14 | CATX | Perspective Therapeutics, Inc. | P — Open-market purchase | 9.5K | $2.10 | $20K |
| 2024-11-27 | CATX | Perspective Therapeutics, Inc. | P — Open-market purchase | 2.6K | $3.67 | $10K |
| 2024-11-27 | CATX | Perspective Therapeutics, Inc. | P — Open-market purchase | 3.6K | $3.62 | $13K |
Williamson Robert F III is a corporate insider — currently tracked as Insider. InsiderAlpha tracks every SEC Form 4 filing in real time.
Recorded transactions: 3 open-market purchases ($43K) and 0 open-market sales () across all tracked filings.
Across 3 tracked purchases, Williamson Robert F III averaged +142.1% avg 30-day return with a 3333% 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.
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