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$WNDW
$1.65 -$0.13 (7.3%) Close

Ownership

13F as of Q2 2026 · 65.8M shares outstanding

Who owns WNDW?

By type of holder
Institutions 0.0% Everyone else 100.0%

No insider has reported a holding in the last two years, so insiders are counted in "Everyone else".

Concentration Top 1 holders own 0.0%
Winch Advisory Services, LLC 0.0%
Institutional ownership
0.0%
0.0 pts vs last qtr
Institutional holders
1
-1 vs last qtr
Net shares bought
−1.0K
by institutions in Q2 2026
New / sold out
0 / 1
positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

None.

Biggest sellers in Q2 2026
  • McIlrath & Eck, LLC SOLD OUT −1.0K

Who is planning to sell?

No insider has filed a notice of proposed sale (Form 144) for SolarWindow Technologies Inc in the last 12 months.

Is your stake being diluted?

Diluted share count, FY2016–FY2025
+216.0%
+13.64% a year
Each share's claim on the business
−68.4%
shrank without buying or selling a share
Spent on buybacks vs paid in stock
— vs $19.4M
over 10 fiscal years
Diluted shares, split-adjusted
10.1M33.3M56.4M2016: 17.7M shares'162017: 12.0M shares'172018: 10.4M shares'182019: 22.3M shares'192020: 27.3M shares'202021: 53.1M shares'212022: 53.2M shares'222023: 53.2M shares'232024: 53.2M shares'242025: 55.8M shares'25
Buybacks Stock-based comp
$0$2.4M$4.9M2016 buybacks: $02016 stock comp: $646.3K'162017 buybacks: $02017 stock comp: $648.2K'172018 buybacks: $02018 stock comp: $2.8M'182019 buybacks: $02019 stock comp: $4.0M'192020 buybacks: $02020 stock comp: $4.9M'202021 buybacks: $02021 stock comp: $4.8M'212022 buybacks: $02022 stock comp: $1.0M'222023 buybacks: $02023 stock comp: $159.4K'232024 buybacks: $02024 stock comp: $403.5K'242025 buybacks: $02025 stock comp: $103.1K'25

How patient are the owners?

Institutional shares by how long they've been held
5+ years100% 3–5 years0% 1–3 years0% Under 1 year0%
Quarterly turnover
41.1%
of institutional shares changed hands
Top 10 managers, median time held
5 years

Super Investors

Investment managers reporting WNDW on Form 13F
ME
McIlrath & Eck, LLC
Shares
—
% of company
—
Change vs last qtr
SOLD OUT
Held since
—
WA
Winch Advisory Services, LLC
Shares
216
% of company
0.00%
Change vs last qtr
Unchanged
Held since
≤2021

Institutional Funds

Mutual funds and ETFs reporting WNDW on Form N-PORT; together they hold 0.0% of the company
No fund reports holding WNDW yet.

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