Insider trade

Mark Campbell Winmill, CEO at Global Self Storage, bought ~$18K of Global Self Storage shares.

~$18K
Approx. value · 3,600 sh @ $5.09
339K
Holds after · shares reported
Traded
Dec 5, 2025
Filed
Dec 5, 2025

The story around this disclosure

Every dated public record OQRO holds about the company from 60 days before to 120 days after, oldest first. It shows what was going on; none of it is a stated reason for the trade.

  1. Nov 7, 2025Company filing · Form 8-K · Results, Reg FDReported its results, and shared information with investors
  2. Nov 11, 2025InsiderInsider purchased ~$10K of SELF shares in the open market
  3. Nov 12, 2025InsiderInsider purchased ~$30K of SELF shares in the open market
  4. Nov 13, 2025InsiderInsider purchased ~$34K of SELF shares in the open market
  5. Nov 14, 2025InsiderInsider purchased ~$36K of SELF shares in the open market
  6. Nov 17, 2025InsiderInsider purchased ~$32K of SELF shares in the open market
  7. Nov 18, 2025InsiderInsider purchased ~$29K of SELF shares in the open market
  8. Nov 19, 2025InsiderInsider purchased ~$32K of SELF shares in the open market
  9. Nov 20, 2025InsiderInsider purchased ~$30K of SELF shares in the open market
  10. Nov 21, 2025InsiderInsider purchased ~$32K of SELF shares in the open market
  11. Nov 24, 2025InsiderInsider purchased ~$21K of SELF shares in the open market
  12. Nov 25, 2025InsiderInsider purchased ~$24K of SELF shares in the open market
  13. Nov 26, 2025InsiderInsider purchased ~$25K of SELF shares in the open market
  14. Nov 28, 2025InsiderInsider purchased ~$17K of SELF shares in the open market
  15. Dec 1, 2025InsiderInsider purchased ~$16K of SELF shares in the open market
  16. Dec 2, 2025InsiderOfficer purchased ~$2.3K of SELF shares in the open market
  17. Dec 3, 2025Insider · 3 insiders in a week, 5th time since 2006CEO purchased ~$31K of SELF shares in the open market
  18. Dec 4, 2025Insider · 3 insiders in a week, 5th time since 2006CEO purchased ~$31K of SELF shares in the open market
  19. Dec 5, 2025 · this disclosureInsider · 3 insiders in a week, 5th time since 2006CEO purchased ~$18K of SELF shares in the open market

What came next

  1. Dec 5, 2025Insider · 3 insiders in a week, 5th time since 2006CEO purchased ~$4K of SELF shares in the open market
  2. Dec 19, 2025Company filing · Form 8-K · Executive changeChanged a top executive or board member“On December 19, 2025, Thomas Winmill tendered his voluntary resignation from the board of directors (the "Board") of Global Self Storage, Inc. (the "Company"), effective immediately.”
  3. Mar 25, 2026Company filing · Form 8-K · Results, Reg FDReported its results, and shared information with investors
View the official recordSEC Form 4

How to read SEC Form 4

Form 4 is the filing that officers, directors and owners of more than 10% of a US-listed company must send to the SEC within two business days after they buy, sell or otherwise change their holding of the company's stock.

Full guide: What is an SEC Form 4?

What else is on file for Global Self Storage

For Global Self Storage, OQRO holds 17 insider filings (SEC Form 4 or Form 144) dated in the last 90 days.

These are records OQRO holds, counted by their date, not a measure of how much trading took place. Routine paperwork such as option exercises and tax withholding is left out. Everything for the company is on its SELF page.

Other recent filings by Mark Campbell Winmill, President and CEO

The full history of Mark Campbell Winmill, President and CEO is on the profile page.

How this filing works

Other disclosures at Global Self Storage

Everything OQRO holds on this company is on its SELF page.

This is one filing. OQRO holds the rest

Insider trades filed with the SEC, stock trades disclosed by members of Congress, fund holdings from 13F filings and federal contract awards, each one in plain words next to its official filing. On this page it opens why the trade stands out, what the company did around that time, the price since, and every field of the form.

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