Executive Vice President and Chief Strategy Officer · National Storage Affiliates Trust (NSA)

William Cowan

A named executive officer of National Storage Affiliates Trust in every fiscal year CompBrief holds from FY2023 to FY2024. Every figure below is printed as the company filed it and cited to the filing it came from.

Total disclosed compensation, FY2024

$2,980,353

FY2023: $2,722,368

Compensation figures as of the proxy filed March 28, 2025 (DEF 14A). Insider transactions since that proxy, current to 2026-09-24.

William Cowan compensation by year

National Storage Affiliates Trust Summary Compensation Table · all 2 fiscal years held
In US dollars, as National Storage Affiliates Trust reports it. Most recent year shaded. Totals are the company’s disclosed totals.
ComponentFY2023FY2024
Salary$286,393$536,025
Bonus$0$0
Stock awards$2,000,000$2,075,040
Option awards$0$0
Non-equity incentive$183,750$369,288
Pension and deferred compensation$0$0
All other$252,225$0
Total$2,722,368$2,980,353

Each year as stated in that year's proxy. A dash means the company reported no figure in that column. Source: National Storage Affiliates Trust DEF 14A filed March 28, 2025, accession 0001628280-25-015431, and prior-year filings. Open the filing on EDGAR.

$2.7M
$3.0M
FY23
FY24
SalaryNon-equity incentiveStock awardsAll other

Equity holdings

unvested awards at FY2024 year-end
TypeUnvested unitsValue at year-endExercise price
PSU69,210$2,623,751—
RSU54,254$2,056,769—

Per the Outstanding Equity Awards at Fiscal Year-End table in National Storage Affiliates Trust's FY2024 proxy; value at the fiscal year-end close, as the company printed it.

Insider transactions since the last proxy

11 Form 4 lines since the FY2024 proxy (filed March 28, 2025)
current to 2026-09-24 · updated nightly
DateTransactionPlanSharesPriceHeld after
2026-07-22Disposition to the issuer—20,374—0
2026-07-22Conversion—20,374—20,374
2026-07-22Conversion derivative—140,923—0
2026-07-22Disposition to the issuer derivative—197,016—0
2026-06-17Conversion derivative—10,471—140,923
2026-06-17Conversion derivative—10,471—197,016
2026-05-21Conversion derivative—17,606—197,016
2026-05-21Conversion derivative—17,606—151,394

The 8 most recent of 11 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 →

National Storage Affiliates Trust’s named executive officers, FY2024

as the company reported each
Named executive officerRoleFY2024 total
David CramerChief Executive Officer and President$4,799,956
William Cowan · this pageExecutive Vice President and Chief Strategy Officer$2,980,353
Brandon TogashiExecutive Vice President, Chief Financial Officer, Chief Accounting Officer and Treasurer$2,617,696
Tamara FischerExecutive Chairperson$2,269,385
Tiffany KenyonExecutive Vice President, Chief Legal Officer and Secretary$1,181,248

The full National Storage Affiliates Trust compensation record

free company brief

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

Compensation, the day it’s disclosed

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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 National Storage Affiliates Trust'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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