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

Mark Campbell Winmill is President and CEO of Global Self Storage, Inc.. Currently has a direct ownership of 322,838 shares of SELF, which is worth approximately $1.79 Million. The most recent transaction as insider was on May 19, 2025, when has been sold 10,000 shares (Common Stock) at a price of $5.67 per share, resulting in proceeds of $56,700. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 323K

12.29% 3M change

22.01% 12M change

Total Value Held $1.79 Million

MARK CAMPBELL WINMILL Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
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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