Mark Campbell Winmill

Companies

• Global Self Storage, Inc.Board member May 25, 2016 to now¹
• Global Self Storage, Inc.Chief executive officer May 25, 2016 to now¹
• Global Self Storage, Inc.President May 25, 2016 to now¹

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• GSGlobal Self Storage, Inc. SELF372,582 shares²$1.8M at $4.93Sep 10, 2026

As of each latest filing. The line shows shares held over time.

Recent filings

• Sep 10, 2026Bought 292 shares at $5.16 of Global Self Storage, Inc.²
• Sep 10, 2026Bought 50 shares at $5.16 of Global Self Storage, Inc.²
• Sep 9, 2026Bought 2,058 shares at $5.16 of Global Self Storage, Inc.²
• Sep 9, 2026Bought 1,600 shares at $5.16 of Global Self Storage, Inc.²
• May 14, 2026Bought 4,000 shares at $5.33 of Global Self Storage, Inc.³
• Mar 24, 2026Granted 12,672 shares at $5.10 of Global Self Storage, Inc.⁴
• Mar 24, 2026Granted 12,672 shares at $5.08 of Global Self Storage, Inc.⁴
• Dec 5, 2025Bought 3,600 shares at $5.09 of Global Self Storage, Inc.⁵
• Dec 5, 2025Bought 800 shares at $5.05 of Global Self Storage, Inc.⁵
• Dec 4, 2025Bought 6,000 shares at $5.14 of Global Self Storage, Inc.⁵
• Dec 3, 2025Bought 6,000 shares at $5.13 of Global Self Storage, Inc.⁵
• May 19, 2025Bought 10,000 shares at $5.67 of Global Self Storage, Inc.⁶
• Mar 25, 2025Granted 12,672 shares at $4.32 of Global Self Storage, Inc.⁷
• Mar 25, 2025Granted 12,672 shares at $5.08 of Global Self Storage, Inc.⁷
• May 30, 2024Bought 20,000 shares at $4.97 of Global Self Storage, Inc.⁸
• May 28, 2024Bought 100 shares at $4.90 of Global Self Storage, Inc.⁸
• May 28, 2024Bought 375 shares at $4.91 of Global Self Storage, Inc.⁸
• May 28, 2024Bought 24 shares at $4.91 of Global Self Storage, Inc.⁸
• May 28, 2024Bought 2,400 shares at $4.90 of Global Self Storage, Inc.⁸
• Mar 25, 2024Granted 38,054 shares at $4.32 of Global Self Storage, Inc.⁹
• Mar 25, 2024Granted 3,467 shares at $4.32 of Global Self Storage, Inc.⁹
• Mar 25, 2024Granted 12,672 shares at $4.32 of Global Self Storage, Inc.⁹
• Nov 16, 2023Bought 1,000 shares at $4.84 of Global Self Storage, Inc.¹⁰
• Nov 16, 2023Bought 1,000 shares at $4.81 of Global Self Storage, Inc.¹⁰
• Nov 16, 2023Bought 2,000 shares at $4.87 of Global Self Storage, Inc.¹⁰