Ownership

13F as of Q2 2026 · 84.9M shares outstanding

Who owns ABCP?

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".

Institutional ownership

0.0%

0.0 pts vs last qtr

Institutional holders

0 vs last qtr

Net shares bought

by institutions in Q2 2026

New / sold out

0 / 0

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

None.

Biggest sellers in Q2 2026

None.

Who is planning to sell?

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

Is your stake being diluted?

Diluted share count, FY2010–FY2016

−5.4%

−0.93% a year

Each share's claim on the business

+5.7%

grew without buying or selling a share

Spent on buybacks vs paid in stock

$525K vs $120K

over 7 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

No 13F manager reports holding ABCP.

Super Investors

Investment managers reporting ABCP on Form 13F

No 13F manager reports holding ABCP yet.

Institutional Funds

Mutual funds and ETFs reporting ABCP on Form N-PORT; together they hold 0.1% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
TW TETON Westwood Mighty Mites Fund Teton Westwood Funds	$28.9K	105.0K	0.12%	0.01%	June 30, 2026

TETON Westwood Mighty Mites Fund

Teton Westwood Funds

Position value

$28.9K

% of company

0.12%

% of the fund

0.01%

As of

June 30, 2026

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