Updated Jul 16, 2026
WINMILL CO. INC has filed 4 SEC Form 4 filings across 1 company in the last 90 days — buying. Lifetime open-market purchases: $1.32M. Historical track record: 3/5 stars across 22 tracked purchases.

| Role | Insider |
|---|---|
| Notability | 30/100 |
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 | ★★★☆☆ (3/5) |
|---|---|
| Total purchases tracked | 22 |
| Purchases with forward-return data | 22 |
| 30-day win rate | 6364% |
| 90-day win rate | 6818% |
| Avg 5-day return | +39.90% |
| Avg 30-day return | +15.26% |
| Avg 90-day return | +503.27% |
| Best 30-day return | +495.56% |
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-07-14 | BXSY | BEXIL INVESTMENT TRUST | P — Open-market purchase | 4.5K | $17.04 | $77K |
| 2026-06-29 | BXSY | BEXIL INVESTMENT TRUST | P — Open-market purchase | 1 | $17.03 | $17 |
| 2026-06-29 | BXSY | BEXIL INVESTMENT TRUST | P — Open-market purchase | 300 | $17.03 | $5K |
| 2026-06-25 | BXSY | BEXIL INVESTMENT TRUST | P — Open-market purchase | 1.1K | $16.97 | $18K |
| 2026-06-24 | BXSY | BEXIL INVESTMENT TRUST | P — Open-market purchase | 1.0K | $16.81 | $17K |
| 2026-06-24 | BXSY | BEXIL INVESTMENT TRUST | P — Open-market purchase | 1.1K | $16.78 | $19K |
| 2025-08-29 | SELF | Global Self Storage, Inc. | P — Open-market purchase | 4.6K | $5.48 | $25K |
| 2025-08-27 | SELF | Global Self Storage, Inc. | P — Open-market purchase | 7.2K | $5.42 | $39K |
| 2025-08-27 | SELF | Global Self Storage, Inc. | P — Open-market purchase | 5.5K | $5.36 | $29K |
| 2025-08-25 | SELF | Global Self Storage, Inc. | P — Open-market purchase | 7.8K | $5.26 | $41K |
| 2025-08-25 | SELF | Global Self Storage, Inc. | P — Open-market purchase | 7.8K | $5.22 | $41K |
| 2025-08-21 | SELF | Global Self Storage, Inc. | P — Open-market purchase | 2.2K | $5.15 | $11K |
| 2025-08-21 | SELF | Global Self Storage, Inc. | P — Open-market purchase | 502 | $5.12 | $3K |
| 2025-07-30 | BXSY | BEXIL INVESTMENT TRUST | P — Open-market purchase | 6.3K | $13.80 | $86K |
| 2025-07-25 | BXSY | BEXIL INVESTMENT TRUST | P — Open-market purchase | 9.5K | $13.87 | $132K |
| 2025-07-25 | BXSY | BEXIL INVESTMENT TRUST | P — Open-market purchase | 2.5K | $13.70 | $34K |
| 2025-07-21 | BXSY | BEXIL INVESTMENT TRUST | P — Open-market purchase | 1.3K | $13.57 | $18K |
| 2025-07-21 | BXSY | BEXIL INVESTMENT TRUST | P — Open-market purchase | 2.3K | $13.55 | $31K |
| 2025-07-17 | BXSY | BEXIL INVESTMENT TRUST | P — Open-market purchase | 277 | $13.53 | $4K |
| 2025-07-17 | BXSY | BEXIL INVESTMENT TRUST | P — Open-market purchase | 1.4K | $13.56 | $19K |
WINMILL CO. INC is a corporate insider — currently tracked as Insider of BEXIL INVESTMENT TRUST (BXSY). InsiderAlpha tracks every SEC Form 4 filing in real time.
4 primary Form 4 filings in the last 90 days, covering 1 company.
Recorded transactions: 28 open-market purchases ($1.32M) and 0 open-market sales () across all tracked filings.
Across 22 tracked purchases, WINMILL CO. INC averaged +15.3% avg 30-day return with a 6364% 30-day win rate. InsiderAlpha rates the track record at 3/5 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 WINMILL CO. INC profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.