The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
This stock page is the Follow view. The Build view lets your agent query CUBA owners, fund changes, insider filings, and source links through REST or MCP.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/CUBA"
Use Arkolith to show who owns CUBA, which funds added or reduced it, and which SEC filings prove each claim.
Not held in any tracked 13F filing yet.
Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Jun 30, 2025 | Herzfeld Brigitta Suzanne | Director | Other (J) | 7K | $17K |
| Jun 30, 2025 | Paylor Ryan M | Insider | Other (J) | 4K | $11K |
| Jun 30, 2025 | Herzfeld Erik Mervin | President | Other (J) | 55K | $136K |
| Jun 30, 2025 | HERZFELD THOMAS J | Insider | Other (J) | 90K | $222K |
| Jun 30, 2025 | TATUM KAY W | Director | Other (J) | 282 | $694 |
| Jun 30, 2025 | Gelety John A | Director | Other (J) | 775 | $2K |
| Jun 30, 2025 | LIEFF ANN S | Director | Other (J) | 4K | $9K |
| Jun 30, 2025 | GONDOR CECILIA L | Director | Other (J) | 2K | $6K |
| Apr 7, 2025 | HERZFELD THOMAS J | Insider | Buy (P) | 2K | $4K |
| Apr 1, 2025 | Herzfeld Brigitta Suzanne | Director | Buy (P) | 1K | $3K |
| Apr 1, 2025 | HERZFELD THOMAS J | Insider | Buy (P) | 781 | $2K |
| Mar 31, 2025 | HERZFELD THOMAS J | Insider | Buy (P) | 470 | $1K |
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for CUBA. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes. Every panel above is one call to the Arkolith API & MCP server.