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 SIEN 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/SIEN"
Use Arkolith to show who owns SIEN, 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 |
|---|---|---|---|---|---|
| Nov 13, 2023 | Van Hove Caroline F. | Director | Tax withholding (F) | 741 | $526 |
| Nov 13, 2023 | Menezes Ronald | President and CEO, Director | Tax withholding (F) | 4K | $3K |
| Sep 7, 2023 | Bennett Oliver Christian | GC & Chief Compliance Officer | Grant (A) | 3K | $5K |
| Aug 3, 2023 | Schmidt Andrew C | Chief Financial Officer | Tax withholding (F) | 561 | $2K |
| Jun 15, 2023 | Casdin Alexander W. | Director | Grant (A) | 15K | $0 |
| Jun 15, 2023 | Ebersole Nori | Director | Grant (A) | 12K | $0 |
| Jun 15, 2023 | Erenburg Irina | Director | Grant (A) | 12K | $0 |
| Jun 15, 2023 | FISHER MARY | Director | Grant (A) | 12K | $0 |
| Jun 15, 2023 | SCHAISON PHILIPPE | Director | Grant (A) | 12K | $0 |
| Mar 22, 2023 | Bennett Oliver Christian | GC & Chief Compliance Officer | Tax withholding (F) | 2K | $3K |
| Mar 22, 2023 | Menezes Ronald | President and CEO, Director | Tax withholding (F) | 2K | $2K |
| Mar 22, 2023 | Schmidt Andrew C | Chief Financial Officer | Tax withholding (F) | 3K | $4K |
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for SIEN. 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.