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 EXTN 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/EXTN"
Use Arkolith to show who owns EXTN, 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 |
|---|---|---|---|---|---|
| Oct 13, 2022 | CHAI TRUST CO LLC | 10% Owner | Disposed to issuer (D) | 448K | — |
| Oct 13, 2022 | CHAI TRUST CO LLC | 10% Owner | Disposed to issuer (D) | 332K | — |
| Oct 13, 2022 | CHAI TRUST CO LLC | 10% Owner | Disposed to issuer (D) | 1.8M | — |
| Oct 13, 2022 | CHAI TRUST CO LLC | 10% Owner | Disposed to issuer (D) | 4.6M | — |
| Oct 13, 2022 | CHAI TRUST CO LLC | 10% Owner | Disposed to issuer (D) | 909K | — |
| Oct 13, 2022 | Barta David Alan | SVP, CFO, and CAO | Disposed to issuer (D) | 86K | $0 |
| Oct 13, 2022 | George Roger | SVP, President Water Solutions | Disposed to issuer (D) | 46K | $0 |
| Oct 13, 2022 | Yell Ieda Gomes | Director | Disposed to issuer (D) | 41K | $0 |
| Oct 13, 2022 | Yell Ieda Gomes | Director | Disposed to issuer (D) | 33K | $0 |
| Oct 13, 2022 | GOODYEAR WILLIAM M | Director | Disposed to issuer (D) | 178K | $0 |
| Oct 13, 2022 | GOUIN JAMES C | Director | Disposed to issuer (D) | 29K | $0 |
| Oct 13, 2022 | GOUIN JAMES C | Director | Disposed to issuer (D) | 26K | $0 |
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for EXTN. 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.