// company-profile
Global Self Storage, Inc.
SELFExchangeNasdaqSectorReal Estate Investment TrustsInc.MDFilings71Insiders9
// api This Global Self Storage, Inc. insider-trading data is served live by the Form4API insider trading API. Get the same data via API.
// activity-summary
No insider transactions in the last 30 days.
// 90-day insight
Over the last 90 days, Global Self Storage, Inc. insiders bought $50K across 5 transactions with no open-market sales.
- Most active insider: Zachary William Chester with 2 transactions totaling $14K.
- Largest single purchase: $21K by WINMILL MARK CAMPBELL on May 14, 2026.
Activity skews bullish — buys outpace sales.
Institutional Ownership
Top 13F-HR holders of Global Self Storage, Inc. as of 2026-03-31
Total reported AUM
$15.6M
QoQ change
+15.2%
Reporting period
2026-03-31
#1
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
$2.2M
430K shares
#2
WINMILL & CO. INC
CIK 52234
$1.6M
304K shares
#3
MARATHON CAPITAL MANAGEMENT
CIK 1213206
$1.3M
260K shares
Data source: SEC Form 13F-HR filings. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| May 14, 2026 | WINMILL MARK CAMPBELL | SELF | Purchase | 4,000 | $5.33 | $21K |
| May 12, 2026 | Zachary William Chester | SELF | Award | 94 | $5.31 | $0K |
| May 12, 2026 | BURKE RUSSELL E III | SELF | Award | 94 | $5.31 | $0K |
| Mar 31, 2026 | BURKE RUSSELL E III | SELF | Award | 2,739 | $5.11 | $14K |
| Mar 31, 2026 | Zachary William Chester | SELF | Award | 2,739 | $5.11 | $14K |
45 more transactions hidden
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