Skip to content
buyWeak cluster of 2

Winmill & Co. Inc bought $61k of SELF

other at Global Self Storage, Inc.. 11,658 shares at an average of $5.21, traded Aug 13, 2026, filed Aug 14, 2026.

Conviction score
26
Value
$61k
11,658 shares
Holdings after
171,434
+7% from before
From 52-week low
+11%
low $4.59, close $5.09
From 52-week high
-7%
high $5.44, as of Aug 13, 2026

Score components

  • Role
    Other
    +8
  • Trade size
    $61k at market
    +7
  • Relative to holdings
    Holdings up 7%
    +3
  • Price context
    Near the top of the 52-week range
    0
  • Cluster
    2 insiders buying within 14 days
    +8
  • Repeat buying
    2 buys in 90 days
    +5
  • Track record
    Median 6-month excess return -2% over 20 past buys
    -5

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.

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 13, 2026 · close 5.02
Since filing Aug 14, 2026: -4.8%SPY +0.5% · excess -5.3%

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 0001628873-26-000070, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Aug 13, 2026POpen-market purchase
Common Stock
+5,629$5.20$29k165,405Aug 14, 2026
Aug 14, 2026POpen-market purchase
Common Stock
+6,029$5.23$32k171,434Aug 14, 2026

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%
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%
35Weak
SELFbuy 3
Global Self Storage, Inc.
Donald Klimoski II
General Counsel
$2,252
446 shares
+1%

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