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 GCI 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/GCI"
Use Arkolith to show who owns GCI, 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 |
|---|---|---|---|---|---|
| Sep 30, 2025 | Louis John Jeffry | Director | Grant (A) | 7K | $30K |
| Sep 30, 2025 | Reinhard Amy | Director | Grant (A) | 4K | $15K |
| Aug 6, 2025 | Reed Michael | Chief Executive Officer, Director | Tax withholding (F) | 58K | $238K |
| Aug 6, 2025 | Reed Michael | Chief Executive Officer, Director | Option exercise (M) | 113K | — |
| Aug 6, 2025 | Reed Michael | Chief Executive Officer, Director | Option exercise (M) | 113K | $0 |
| Aug 6, 2025 | Gallagher Cindy | CAO | Tax withholding (F) | 3K | $11K |
| Aug 6, 2025 | Gallagher Cindy | CAO | Option exercise (M) | 9K | — |
| Aug 6, 2025 | Gallagher Cindy | CAO | Option exercise (M) | 9K | $0 |
| Aug 6, 2025 | Gosser Trisha | CFO | Tax withholding (F) | 3K | $14K |
| Aug 6, 2025 | Gosser Trisha | CFO | Option exercise (M) | 10K | — |
| Aug 6, 2025 | Gosser Trisha | CFO | Option exercise (M) | 10K | $0 |
| Aug 5, 2025 | Reed Michael | Chief Executive Officer, Director | Grant (A) | 360K | $0 |
No filings captured for this ticker in the live stream yet.
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for GCI. 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.