🕵️ Global SELF Storage, Inc. ($SELF)

SEC insider & ownership activity, last 12 months · CIK 1031235 · every row links its SEC filing

Over the last 12 months insiders bought $664K with no open-market selling against it. Winmill & Co. Inc bought $556K (Aug–Dec). Mark Campbell Winmill added 7.3% → 8.4%; Winmill & Co. Incorporated added 4.2% → 5.2%. No red-flag 8-Ks in the window.

Aug 2025: net +$190K Sep 2025: net +$0 Oct 2025: net +$0 Nov 2025: net +$351K Dec 2025: net +$102K Jan 2026: net +$0 Mar 2026: net +$0 Mar 2026: net +$0 Apr 2026: net +$0 May 2026: net +$21K Jun 2026: net +$0 Jul 2026: net +$0
Monthly net open-market insider flow, last 12 months (up = net buying)

Insider flow

4 buyers, $664K (28 lots) · 0 sellers, $0 (0 lots)

InsiderBuysBoughtSellsSoldLast
Winmill & Co. Inc21$556K 0Dec 1, 2025
Winmill Mark Campbell5$105K 0May 14, 2026
Klimoski Donald II1$2K 0Dec 2, 2025
Russell E. Burke III1$551 0Aug 25, 2025

5%+ holders

HolderStakeClassScheduleEvent
Mark Campbell Winmill 8.4% 13DDec 3, 2025 filing ↗
Winmill Family Trust 5.2% 13DDec 3, 2025 filing ↗
Winmill & Co. Incorporated 5.2% 13DDec 3, 2025 filing ↗
Thomas Bassett Winmill 5.2% 13DDec 3, 2025 filing ↗

Planned insider sales (Form 144)

No sale notices filed in the last 12 months.

Material events (8-K)

ItemEvent date
Shareholder vote (5.07)Jun 16, 2026 filing ↗
Financial Statements and Exhibits (9.01)Jun 16, 2026 filing ↗
Earnings (2.02)May 8, 2026 filing ↗
Reg FD disclosure (7.01)May 8, 2026 filing ↗
Financial Statements and Exhibits (9.01)May 8, 2026 filing ↗
Earnings (2.02)Mar 25, 2026 filing ↗
Reg FD disclosure (7.01)Mar 25, 2026 filing ↗
Financial Statements and Exhibits (9.01)Mar 25, 2026 filing ↗
Officer/director changes (5.02)Dec 19, 2025 filing ↗
Financial Statements and Exhibits (9.01)Dec 19, 2025 filing ↗
Earnings (2.02)Nov 7, 2025 filing ↗
Reg FD disclosure (7.01)Nov 7, 2025 filing ↗
Financial Statements and Exhibits (9.01)Nov 7, 2025 filing ↗
Earnings (2.02)Aug 8, 2025 filing ↗
Reg FD disclosure (7.01)Aug 8, 2025 filing ↗
Financial Statements and Exhibits (9.01)Aug 8, 2025 filing ↗