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 MTBL 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/MTBL"
Use Arkolith to show who owns MTBL, 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 |
|---|---|---|---|---|---|
| Mar 20, 2024 | Chen Joseph | Chief Executive Officer, Director, 10% Owner | Option exercise (M) | 51.9M | $519K |
| Mar 20, 2024 | Chen Joseph | Chief Executive Officer, Director, 10% Owner | Option exercise (M) | 39.8M | $398K |
| Mar 20, 2024 | Chen Joseph | Chief Executive Officer, Director, 10% Owner | Option exercise (M) | 39.8M | $0 |
| Mar 20, 2024 | Chen Joseph | Chief Executive Officer, Director, 10% Owner | Option exercise (M) | 51.9M | $0 |
| Dec 29, 2023 | SOFTBANK GROUP CORP. | 10% Owner | Sell (S) | 117.4M | $2.3M |
| Oct 26, 2023 | POLAK REBECCA C. | Director | Grant (A) | 48K | $0 |
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for MTBL. 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.