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.
Key figures
- Insider buysOpen market, last 90 days
- 0
- Insider sellsOpen market, last 90 days
- 0
- 13F holdersQ2 2026
- 0
- 13F valueReported value at the end of Q2 2026
- $0
- Superinvestors holdingAt the end of Q2 2026
- 0
Price chart
Superinvestors holding ABCP, Q2 2026
No superinvestor reported holding ABCP at the end of Q2 2026.
Latest insider trades
Open-market purchases and sales by AmBase Corp insiders from Form 4, newest first.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| May 1, 2024 (view filing)7:51 PM ET | Apr 30 | 1 day | Barc Investments LLC10% Owner | PPurchaseCommon Stock, par value $0.01 | +909.7K | $0.21 | +$191.0K | +1.5%59.9M after | |
| Mar 7, 2024 (view filing)4:03 PM ET | Feb 28 | 8 daysLate | Barc Investments LLC10% Owner | PPurchaseCommon Stock, par value $0.01 | +44.2M | $0.20 | +$8.84M | +276.3%60.2M after | |
| Feb 20, 2024 (view filing)7:36 PM ET | Feb 15-20 | 5 days | Camac Fund, LP10% Owner | SSale | −3.18M | $0.2374 | −$754.5K | −42.9%4.23M after | 3 lots |
| Oct 11, 2023 (view filing)6:49 PM ET | Oct 9 | 2 days | Camac Fund, LP10% Owner | SSale | −50.0K | $0.15 | −$7.50K | −0.7%7.41M after | |
| Sep 26, 2023 (view filing)5:50 PM ET | Sep 22 | 4 days | Camac Fund, LP10% Owner | SSale | −70.0K | $0.1553 | −$10.9K | −0.9%7.46M after | |
| Sep 12, 2023 (view filing)6:10 PM ET | Sep 8 | 4 days | Camac Fund, LP10% Owner | SSale | −50.0K | $0.15 | −$7.50K | −0.7%7.53M after | |
| Aug 29, 2023 (view filing)3:14 PM ET | Aug 25 | 4 days | Camac Fund, LP10% Owner | SSale | −100.0K | $0.15 | −$15.0K | −1.3%7.58M after | |
| Jun 29, 2023 (view filing)6:48 PM ET | Jun 27 | 2 days | Camac Fund, LP10% Owner | SSale | −202.5K | $0.15 | −$30.4K | −2.6%7.68M after | |
| Jun 14, 2023 (view filing)5:47 PM ET | Jun 12-14 | 2 days | Camac Fund, LP10% Owner | SSale | −112.0K | $0.15 | −$16.8K | −1.4%7.88M after | 2 lots |
| Jun 9, 2023 (view filing)4:08 PM ET | Jun 7 | 2 days | Camac Fund, LP10% Owner | SSale | −15.0K | $0.15 | −$2.25K | −65.2%7.99K after |
Top 10 13F holders, Q2 2026
The largest institutional positions in AmBase Corp at the end of Q2 2026; share changes are against Q1 2026.
No institution reported holding ABCP in 13F filings for Q2 2026.