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 SEMrush Holdings, Inc. 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/SEMR"
Use Arkolith to show who owns SEMrush Holdings, Inc., 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 |
|---|---|---|---|---|---|
| Apr 28, 2026 | Aldrich Steven | Director | Disposed to issuer (D) | 57K | $683K |
| Apr 28, 2026 | BLAKE KATRYN | Director | Disposed to issuer (D) | 68K | $821K |
| Apr 28, 2026 | BLAKE KATRYN | Director | Disposed to issuer (D) | 60K | — |
| Apr 28, 2026 | Baird Anna | Director | Disposed to issuer (D) | 45K | $534K |
| Apr 28, 2026 | Levin Eugenie | President | Disposed to issuer (D) | 578K | $6.9M |
| Apr 28, 2026 | Levin Eugenie | President | Disposed to issuer (D) | 96K | — |
| Apr 28, 2026 | Levin Eugenie | President | Disposed to issuer (D) | 191K | — |
| Apr 28, 2026 | Levin Eugenie | President | Disposed to issuer (D) | 1.1M | $13.8M |
| Apr 28, 2026 | Mason David W | Chief Legal Officer | Disposed to issuer (D) | 271K | $3.3M |
| Apr 28, 2026 | Mason David W | Chief Legal Officer | Disposed to issuer (D) | 145K | — |
| Apr 28, 2026 | Melnikov Dmitry | Director, 10% Owner | Disposed to issuer (D) | 2.7M | $32.2M |
| Apr 28, 2026 | Melnikov Dmitry | Director, 10% Owner | Disposed to issuer (D) | 9.0M | $108.0M |
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for SEMR. 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.