Reporting owner · CIK 0000052234
Winmill & Co. Inc
SEC Form 4 history across 2 companies, 10 transactions and 5 filings.
SERGlobal Self Storage, Inc.
Open-market transaction mix100% buys10 buys · 0 sales
Available history · Aug 17, 2026 – Aug 26, 2026
Latest insider transactions
Form 4 filings from available history.| Company | Insider | Activity | Disclosed value | Filed (ET) |
|---|---|---|---|---|
SELFGlobal Self Storage, Inc. | Winmill & Co. IncSER | P · buySEC filing ↗ | $43.7kView disclosure → | |
SELFGlobal Self Storage, Inc. | Winmill & Co. IncSER | P · buySEC filing ↗ | $42.6kView disclosure → | |
SELFGlobal Self Storage, Inc. | Winmill & Co. IncSER | P · buySEC filing ↗ | $45.0kView disclosure → | |
SELFGlobal Self Storage, Inc. | Winmill & Co. IncSER | P · buySEC filing ↗ | $38.8kView disclosure → | |
SELFGlobal Self Storage, Inc. | Winmill & Co. IncSER | P · buySEC filing ↗ | $37.4kView disclosure → | |
SELFGlobal Self Storage, Inc. | Winmill & Co. IncSER | P · buySEC filing ↗ | $37.1kView disclosure → | |
BXSYBEXIL INVESTMENT TRUST | Winmill & Co. IncSER | P · buySEC filing ↗ | $44.9kView disclosure → | |
BXSYBEXIL INVESTMENT TRUST | Winmill & Co. IncSER | P · buySEC filing ↗ | $94.0kView disclosure → | |
SELFGlobal Self Storage, Inc. | Winmill & Co. IncSER | P · buySEC filing ↗ | $30.5kView disclosure → | |
SELFGlobal Self Storage, Inc. | Winmill & Co. IncSER | P · buySEC filing ↗ | $37.9kView disclosure → |
Latest Form 4 facts
Quick context from source filings
Latest open-market transaction
buy at Global Self Storage, Inc. on Aug 26, 2026 valued at $43,757.
Review SEC filingLatest sale
No open-market insider sale is available.
Monthly open-market activity
Last 1 reported months · purchases and sales
View exact monthly values
| Month | Purchases | Sales | Buy value | Sale value | Net value |
|---|---|---|---|---|---|
| Aug 2026 | 10 | 0 | $452,266.38 | $0.00 | $452,266.38 |
Net value is disclosed purchases minus sales, not profit. A dash means the value is unavailable.
Ownership and transaction size
Ownership and ticket size
Average P/S size$45.2K
Median P/S size$40.8K
Direct10
Indirect0
Aug 26, 2026buy
Filing-only signals
Deterministic matches in this insider's history
Associated companies
Companies in the disclosed reporting history
Open-market buy performance
90-day forward return on this insider's open-market purchases
Forward return is not available yet
No purchases currently have the price observations needed for a 90-day return. This may reflect incomplete price coverage or purchases that have not reached the return window.
Disclosed ownership
How reported shareholdings evolved
Non-derivative shares held after reported transactions—not stock prices or a complete portfolio.
8 observations · Aug 17, 2026 – Aug 26, 2026. Window ends at the latest available report, not today.
Selected observation · Aug 26, 2026228,512 shares reported
Inspect transaction View exact observations and source transactions
| Transaction date | Shares held after | Filed | Source |
|---|---|---|---|
| Aug 17, 2026 | 178,551 | Aug 18, 2026 | View transaction |
| Aug 18, 2026 | 184,287 | Aug 18, 2026 | View transaction |
| Aug 19, 2026 | 191,164 | Aug 20, 2026 | View transaction |
| Aug 20, 2026 | 198,065 | Aug 20, 2026 | View transaction |
| Aug 21, 2026 | 205,182 | Aug 24, 2026 | View transaction |
| Aug 24, 2026 | 213,204 | Aug 24, 2026 | View transaction |
| Aug 25, 2026 | 220,751 | Aug 26, 2026 | View transaction |
| Aug 26, 2026 | 228,512 | Aug 26, 2026 | View transaction |
Securities and direct/indirect ownership contexts are kept separate and never summed. Joint filings may associate the same disclosed row with multiple owners. Unknown values are omitted, not treated as zero. Lines connect observations for readability; they do not establish holdings between filings, cost basis, or current ownership. Amendments and stock splits require reviewing the source.
Winmill & Co. Inc Insider Activity FAQ
SEC Form 4 context
Who is Winmill & Co. Inc?
Winmill & Co. Inc is a reporting owner in SEC Form 4 filings with reporting owner CIK 0000052234.
Which companies has Winmill & Co. Inc reported transactions for?
Global Self Storage, Inc., BEXIL INVESTMENT TRUST
When was Winmill & Co. Inc's latest insider buy?
buy at Global Self Storage, Inc. on Aug 26, 2026 valued at $43,757.
When was Winmill & Co. Inc's latest insider sale?
No open-market insider sale is available for this period.
Where can I see the original SEC filings?
Each transaction row links directly to the source SEC filing so the reported Form 4 details can be reviewed.
Are performance metrics included?
The profile shows average and median 90-day stock returns after open-market purchases when price coverage is available. These are unadjusted stock returns, not realized trading gains. Win rates, benchmark-adjusted returns and conviction scores are not calculated.