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AmBase Corp

ABCP
Exchange
OTC
Industry
Opeators of Nonresidential Buildings
SEC CIK
0000020639

No open-market purchases or sales by AmBase Corp insiders were filed in the last 90 days; no institution reported holding it in 13F filings for Q2 2026; no superinvestor holds it.

13F holders, Q4 2024

Institutional positions in AmBase Corp as of Dec 31, 2024. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
1
+1 vs. Q3 2024
Shares held
26.0K
+26.0K vs. Q3 2024
Total value
$8.32K
+$8.32K vs. Q3 2024
New holders
1
0 more added
Sold out
0
0 more reduced

Compare with Q3 2024: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting ABCP on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ4 2024: 1 institution
Q1 2021: 1 institutionQ2 2021: 1 institutionQ3 2021: 1 institutionQ4 2021: 2 institutionsQ1 2022: 2 institutionsQ2 2022: 1 institutionQ3 2022: 1 institutionQ4 2022: 1 institutionQ1 2023: 1 institutionQ2 2023: 1 institutionQ3 2023: 1 institutionQ4 2023: 3 institutionsQ1 2024: 2 institutionsQ2 2024: 0 institutionsQ3 2024: 0 institutionsQ4 2024: 1 institutionQ1 2025: 1 institutionQ2 2025: 0 institutionsQ3 2025: 0 institutionsQ4 2025: 0 institutionsQ1 2026: 0 institutionsQ2 2026: 0 institutions
Value heldQ4 2024: $8.32K
Q1 2021: $90.0KQ2 2021: $97.0KQ3 2021: $102.0KQ4 2021: $121.0KQ1 2022: $111.0KQ2 2022: $73.0KQ3 2022: $32.0KQ4 2022: $24.0KQ1 2023: $34.9KQ2 2023: $44.1KQ3 2023: $46.6KQ4 2023: $55.7KQ1 2024: $73.2KQ2 2024: $0Q3 2024: $0Q4 2024: $8.32KQ1 2025: $7.95KQ2 2025: $0Q3 2025: $0Q4 2025: $0Q1 2026: $0Q2 2026: $0
Institutions holding ABCP and their total value by quarter
QuarterHoldersValue
Q2 20260$0
Q1 20260$0
Q4 20250$0
Q3 20250$0
Q2 20250$0
Q1 20251$7.95K
Q4 20241$8.32K
Q3 20240$0
Q2 20240$0
Q1 20242$73.2K
Q4 20233$55.7K
Q3 20231$46.6K
Q2 20231$44.1K
Q1 20231$34.9K
Q4 20221$24.0K
Q3 20221$32.0K
Q2 20221$73.0K
Q1 20222$111.0K
Q4 20212$121.0K
Q3 20211$102.0K
Q2 20211$97.0K
Q1 20211$90.0K

Institutions, Q4 2024

Shares, value and share of portfolio for each institution holding AmBase Corp; share changes are against Q3 2024.

Institutions holding ABCP in Q4 2024
InstitutionSharesValue% of portfolioChange in sharesAction
Kingswood Wealth Advisors, LLC26,000$8.32K0.00%+26,000New