Skip to content
buyWeak

Winmill & Co. Inc bought $61k of SELF

other at Global Self Storage, Inc.. 11,844 shares at an average of $5.14, traded Nov 17, 2025, filed Nov 18, 2025.

Conviction score
33
Value
$61k
11,844 shares
Holdings after
109,431
+12% from before
From 52-week low
+9%
low $4.41, close $4.82
From 52-week high
-9%
high $5.29, as of Nov 17, 2025

Score components

  • Role
    Other
    +8
  • Trade size
    $61k at market
    +7
  • Relative to holdings
    Holdings up 12%
    +3
  • Price context
    9% above the 52-week low
    +10
  • Cluster
    No other insider buying within 14 days
    0
  • Repeat buying
    7 buys in 90 days
    +5
  • Track record
    Too few past buys to judge (0 with prices)
    0

What happened after comparable buys

Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.

This signal so far: 1m -0.7%, 3m -2.3%, 6m +5.5%.

Price around the trade, and since

From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.

SELFOct 9, 2026 · close 4.90
Since filing Nov 18, 2025: +0.4%SPY +19.1% · excess -18.7%

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™

Rows in this filing

Every transaction in Form 4 0000052234-25-000006, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Nov 17, 2025POpen-market purchase
Common Stock
+6,226$5.12$32k103,813Nov 18, 2025
Nov 18, 2025POpen-market purchase
Common Stock
+5,618$5.16$29k109,431Nov 18, 2025

Related signals

Other insiders at Global Self Storage, Inc. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
25Weak
SELFbuy
Global Self Storage, Inc.
Mark Campbell Winmill
President and CEO
$21k
4,000 shares
+1%
28Weak
SELFbuy 2
Global Self Storage, Inc.
Winmill & Co. Inc
other
$86k
15,308 shares
+7%
28Weak
SELFbuy 2
Global Self Storage, Inc.
Winmill & Co. Inc
other
$84k
15,139 shares
+8%
27Weak
SELFbuy 2
Global Self Storage, Inc.
Winmill & Co. Inc
other
$75k
13,778 shares
+7%
27Weak
SELFbuy 2
Global Self Storage, Inc.
Winmill & Co. Inc
other
$68k
12,853 shares
+7%
23Weak
SELFbuy 2
Global Self Storage, Inc.
Russell E Burke III
director
$8,459
1,625 shares
+4%
26Weak
SELFbuy 2
Global Self Storage, Inc.
Winmill & Co. Inc
other
$61k
11,658 shares
+7%
32Weak
SELFbuy 2
Global Self Storage, Inc.
Winmill & Co. Inc
other
$63k
12,135 shares
+8%
25Weak
SELFbuy
Global Self Storage, Inc.
Mark Campbell Winmill
President and CEO
$21k
4,000 shares
+1%
52Moderate
SELFbuy 3
Global Self Storage, Inc.
Mark Campbell Winmill
President and CEO
$84k
16,400 shares
+5%

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

Winmill & Co. Inc bought $61k of SELF | InsiderTell