Chief Executive Officer and President · Global Self Storage, Inc. (SELF)

Mark Winmill

A named executive officer of Global Self Storage in every fiscal year CompBrief holds from FY2017 to FY2025. Every figure below is printed as the company filed it and cited to the filing it came from.

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Total disclosed compensation, FY2025

$693,476

FY2024: $813,323

1st of 3 named executive officers at Global Self Storage by FY2025 total.

3 named officers on file for Global Self Storage, FY2025

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What this number hides

The filing gives the total. Global Self Storage’s full Executive Compensation Report gives every award, the disclosed peer set and what the total leaves out — the pair adds the board’s.

Compensation figures as of the proxy filed April 29, 2026 (DEF 14A). Insider transactions since that proxy, current to 2026-11-07.

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Mark Winmill compensation by year

Global Self Storage Summary Compensation Table · all 9 fiscal years held
In US dollars, as Global Self Storage reports it. Most recent year shaded. Totals are the company’s disclosed totals.
ComponentFY2017FY2018FY2019FY2020FY2021FY2022FY2023FY2024FY2025
Salary$297,000$317,000$337,000$357,000$377,000$397,000$427,000$447,000$467,000
Bonus$11,423$12,192$12,962$13,731$14,500$15,269$16,423$17,192$17,962
Stock awards$0$141,992$31,639$3,712$144,844$55,899$82,470$273,879$128,748
Option awards$0$0$0—$0$0$0$0$0
Non-equity incentive$0$0$0—$0$0$0$0$0
Pension and deferred compensation$0$0$0—$0$0$0$0$0
All other$54,366$48,580$58,818$49,963$51,566$58,085$67,175$75,252$79,766
Total$362,789$519,764$440,419$424,406$587,950$526,253$593,068$813,323$693,476

Each year as stated in that year's proxy. A dash means the company reported no figure in that column. Source: Global Self Storage, Inc. DEF 14A filed April 29, 2026, accession 0001193125-26-191430, and prior-year filings. Open the filing on EDGAR.

How this page was built: the Global Self Storage, Inc. filed document, accession 0001193125-26-191430. Every figure is read from that document and cited to the page and table it appears in. Filed April 29, 2026.

$363K
$520K
$440K
$424K
$588K
$526K
$593K
$813K
$693K
FY17
FY18
FY19
FY20
FY21
FY22
FY23
FY24
FY25
SalaryBonusStock awardsAll other

Equity holdings

unvested awards at FY2025 year-end
TypeUnvested unitsValue at year-endExercise price
PSU40,525$206,672—
PSU21,405$109,166—

Per the Outstanding Equity Awards at Fiscal Year-End table in Global Self Storage, Inc.'s FY2025 proxy; value at the fiscal year-end close, as the company printed it.

Insider transactions since the last proxy

5 Form 4 lines since the FY2025 proxy (filed April 29, 2026)
current to 2026-11-07 · updated nightly
DateTransactionPlanSharesPriceHeld after
2026-09-10Purchase—50$5.16372,290.29
2026-09-10Purchase—292$5.16372,582.29
2026-09-09Purchase—2,058$5.16372,240.29
2026-09-09Purchase—1,600$5.16370,182.29
2026-05-14Purchase—4,000$5.33368,582.29

The 5 most recent of 5 lines, each as reported on the Form 4. "10b5-1" marks a trade the filing reports under a pre-arranged trading plan. View every Form 4 filing on EDGAR →

Global Self Storage’s named executive officers, FY2025

as the company reported each
Named executive officerRoleFY2025 total
Mark Winmill · this pageChief Executive Officer and President$693,476
Donald KlimoskiSenior Vice President - Operations, General Counsel, Secretary, and Chief Compliance Officer$296,035
Thomas O'MalleyChief Financial Officer, Chief Accounting Officer, Treasurer, and Senior Vice President$289,274

Board service

Global Self Storage board · FY2021–FY2025

How this board is paid

Company policy: Global Self Storage pays directors a $25,000 cash retainer. As stated in Global Self Storage's FY2025 proxy.

Committees

Executive Committee (Chair) · Committee of Continuing Directors

The full Global Self Storage compensation record

free company brief

This page is one person within Global Self Storage's record. The company brief lists every named executive, each linking to their own page.

Compensation, the day it’s disclosed

The CompBrief Daily Digest lists the newest executive and director compensation disclosures as companies file them. Or order Global Self Storage's full Executive Compensation Report with peer benchmarking.

How this record is built

Every figure on this page is one figure from a public SEC filing, printed as the filing states it and cited to the document. Compensation totals are Global Self Storage's own disclosed totals, not summed by Velarion. Insider transactions are read from Form 4 filings and cover every line filed since the most recent proxy. Nothing is estimated by Velarion; where the company does not disclose a value the cell reads "—", and a section appears only where the company discloses the data. Corrections: records@velarion.ai.

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Mark Winmill's compensation dossier