Comparable stake leader
Barc Investments LLC
SEC ownership of AmBase Corp
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0000020639.
Disclosed value leader
Barc Investments LLC
Comparable rows
0/3
Latest evidence
30 Apr 2024
- Public ticker
- ABCP on OTC
- Parsed ownership sources
-
3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
Barc Investments LLC
Ranking: Comparable ownership first, then disclosed value
- Latest parsed ownership date
-
30 Apr 2024
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0000020639
- Issuer location
- Coral Springs, FL
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
1 signal
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of AmBase Corp (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Barc Investments LLC
Disclosed value leader
Barc Investments LLC
Comparable rows
0/3
Latest evidence
30 Apr 2024
3/4/5
Highest disclosed value: $12,570,632
3 rows are not safely comparable across share classes.
Quick read
Barc Investments LLC has the largest disclosed position value at $12.57M.
0 of 3 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Barc Investments LLC's linked filing trail.
Disclosed position value
Top 3
Barc Investments LLC
$12.57M
Camac Fund, LP
$934.3K
Richard A. Bianco
$243.4K
Value bars compare disclosed positions; verify each figure against the linked filing evidence.
Detailed SEC evidence table Showing 1-3 of 3 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Barc Investments LLC |
3/4/5
10%+ Owner
|
—
class O/S missing
|
$12,570,632
59,860,151 shares
|
— | 30 Apr 2024 |
| Camac Fund, LP |
3/4/5
10%+ Owner
|
—
class O/S missing
|
$934,270
4,227,465 shares
|
— | 15 Feb 2024 |
| Richard A. Bianco |
3/4/5
CEO, Director
|
—
class O/S missing
|
$243,382
1,622,547 shares
|
— | 01 Aug 2023 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Insider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 30 Jun 2025.
Buys
$0
Insiders: 0
Sells
$0
Insiders: 0
Net
$0
Shares: 0
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 0
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-6 of 6 reporting-owner rows connected to AmBase Corp. Open a relationship link for the CIK-to-CIK filing trail.
Rows
6
Largest Forms 3/4/5 holder
Barc Investments LLC
Net 12M change
$0
Latest report
30 Apr 2024
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Barc Investments LLC | 10%+ Owner | $12,570,632 | Filing P/S | 30 Apr 2024 | ||
| Camac Fund, LP | 10%+ Owner | $934,270 | Filing P/S | 15 Feb 2024 | ||
| Richard A. Bianco | CEO, Director | $243,382 | Mixed | 01 Aug 2023 | ||
| Jerry Y. Carnegie | Director | Mixed | 29 Apr 2024 | |||
| Kenneth M. Schmidt | Director | Mixed | 01 Jun 2023 | |||
| Scott Michael Salant | Director | Mixed | 20 Jan 2023 |
Recent insider transactions for AmBase Corp
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| No insider transactions were found in the last 12 months for this issuer. | ||||||||||
* marks a reported price that did not pass the local price check.