Mark Campbell Winmill Global Self Storage, Inc. (SELF) insider trading activity

SELF Quotes by TradingView

Mark Campbell Winmill is President and CEO of Global Self Storage, Inc.. Currently has a direct ownership of 339,238 shares of SELF, which is worth approximately $1.74 Million. The most recent transaction as insider was on Dec 05, 2025, when has been sold 4,400 shares (Common Stock) at a price of $5.07 per share, resulting in proceeds of $22,308. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 339K
5.08% 3M change
18.0% 12M change
Total Value Held $1.74 Million

MARK CAMPBELL WINMILL Transaction History

Date Transaction Value Shares Traded Shares Held Form
Dec 05 2025
BUY
Open market or private purchase
$22,308 $5.07 p/Share
4,400 Added 1.28%
339,238 Common Stock
Dec 04 2025
BUY
Open market or private purchase
$30,839 $5.14 p/Share
6,000 Added 1.76%
334,838 Common Stock
Dec 03 2025
BUY
Open market or private purchase
$30,780 $5.13 p/Share
6,000 Added 1.79%
328,838 Common Stock
May 19 2025
BUY
Open market or private purchase
$56,700 $5.67 p/Share
10,000 Added 3.0%
322,838 Common Stock
Mar 25 2025
BUY
Grant, award, or other acquisition
$119,116 $4.7 p/Share
25,344 Added 7.49%
312,838 Common Stock
May 30 2024
BUY
Open market or private purchase
$99,400 $4.97 p/Share
20,000 Added 6.5%
287,494 Common Stock
May 28 2024
BUY
Open market or private purchase
$14,234 $4.91 p/Share
2,899 Added 1.07%
267,494 Common Stock
Mar 25 2024
BUY
Grant, award, or other acquisition
$234,113 $4.32 p/Share
54,193 Added 17.0%
264,595 Common Stock
Nov 16 2023
BUY
Open market or private purchase
$34,776 $4.83 p/Share
7,200 Added 3.31%
210,402 Common Stock
Aug 17 2023
BUY
Open market or private purchase
$5,070 $5.07 p/Share
1,000 Added 0.49%
203,202 Common Stock
May 15 2023
BUY
Open market or private purchase
$39,936 $5.12 p/Share
7,800 Added 3.71%
202,202 Common Stock
Mar 27 2023
BUY
Grant, award, or other acquisition
$78,549 $5.32 p/Share
14,765 Added 7.06%
194,402 Common Stock
Nov 18 2022
BUY
Open market or private purchase
$15,540 $5.18 p/Share
3,000 Added 1.64%
179,637 Common Stock
Aug 23 2022
BUY
Open market or private purchase
$29,136 $6.07 p/Share
4,800 Added 2.65%
176,637 Common Stock
May 20 2022
BUY
Open market or private purchase
$9,758 $5.74 p/Share
1,700 Added 0.98%
171,837 Common Stock
Mar 28 2022
BUY
Grant, award, or other acquisition
$44,298 $5.52 p/Share
8,025 Added 4.5%
170,137 Common Stock
Aug 24 2021
BUY
Open market or private purchase
$5,120 $5.12 p/Share
1,000 Added 0.61%
162,112 Common Stock
Aug 20 2021
BUY
Open market or private purchase
$20,400 $5.1 p/Share
4,000 Added 2.42%
161,112 Common Stock
Mar 25 2021
SELL
Sale (or disposition) back to the issuer
-
6,988 Reduced 5.29%
124,987 Common Stock
Mar 25 2021
BUY
Grant, award, or other acquisition
$144,884 $4.51 p/Share
32,125 Added 16.98%
157,112 Common Stock
Nov 20 2020
BUY
Open market or private purchase
$10,000 $4.0 p/Share
2,500 Added 1.86%
131,975 Common Stock
Nov 19 2020
BUY
Open market or private purchase
$30,000 $4.0 p/Share
7,500 Added 5.48%
129,475 Common Stock
MCW

Mark Campbell Winmill

President and CEO
Millbrook, NY

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