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 SUMR 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/SUMR"
Use Arkolith to show who owns SUMR, 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 22, 2022 | D An Evelyn | Director | Disposed to issuer (D) | 10K | $117K |
| Jun 22, 2022 | Marino Robin L | Director | Disposed to issuer (D) | 33K | $401K |
| Jun 22, 2022 | MUSTACCHI ALAN | Director | Disposed to issuer (D) | 16K | $197K |
| Jun 22, 2022 | TRAIN ANDREW MICHAEL | Director | Disposed to issuer (D) | 7K | $89K |
| Jun 22, 2022 | ZELKOWICZ STEPHEN | Director | Disposed to issuer (D) | 14K | $171K |
| Apr 29, 2022 | MACARI JASON P | 10% Owner | Buy (P) | 3K | $32K |
| Apr 28, 2022 | MACARI JASON P | 10% Owner | Buy (P) | 802 | $9K |
| Apr 27, 2022 | MACARI JASON P | 10% Owner | Buy (P) | 5K | $63K |
| Apr 26, 2022 | MACARI JASON P | 10% Owner | Buy (P) | 8K | $91K |
| Apr 25, 2022 | MACARI JASON P | 10% Owner | Sell (S) | 7K | $86K |
| Apr 22, 2022 | MACARI JASON P | 10% Owner | Sell (S) | 9K | $109K |
| Jun 16, 2021 | TRAIN ANDREW MICHAEL | Director | Sell (S) | 3K | $39K |
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for SUMR. 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.