---
title: "TENARIS S A — Ownership Dossier"
canonical: https://whiteintel.dev/entity/a28263be-c419-5ed9-94b7-706fdda2e1fc
json: https://whiteintel.dev/api/public/dossier/a28263be-c419-5ed9-94b7-706fdda2e1fc
identifier: cusip:88031M909
jurisdiction: US
source: WhiteIntel corporate-ownership graph
---

# TENARIS S A

**Type:** Asset  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `cusip:88031M909`  
**Canonical dossier:** https://whiteintel.dev/entity/a28263be-c419-5ed9-94b7-706fdda2e1fc  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/a28263be-c419-5ed9-94b7-706fdda2e1fc  

## Ownership & control

### UBO chain (walk to the ultimate owner)

A **4-step** ownership/control chain to the ultimate beneficial owner is resolved for this entity. The full cited chain unlocks with a paid API key or a one-off dossier — https://whiteintel.dev/pricing.

## Provenance

- SEC 13F — https://www.sec.gov/data-research/sec-markets-data/form-13f-data-sets

## Get the full, resolved dossier (agent-callable)

The above is the free teaser. The resolved **multi-hop UBO chain**, ownership **%**, full **financial history**, itemised **assets** and the hop-by-hop **exposure path** are the paid depth — callable as tools from your agent:

```bash
npx -y @whiteintel/mcp-server   # then: get_dossier · trace_ownership_path · check_offshore_exposure
```

Or unlock a one-off cited dossier for **TENARIS S A** — https://whiteintel.dev/entity/a28263be-c419-5ed9-94b7-706fdda2e1fc · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **TENARIS S A**. Human view: https://whiteintel.dev/entity/a28263be-c419-5ed9-94b7-706fdda2e1fc · Structured JSON: https://whiteintel.dev/api/public/dossier/a28263be-c419-5ed9-94b7-706fdda2e1fc._

_Risk levels are heuristic investigative leads, not legal determinations of beneficial ownership. Every claim carries a source; an absent edge means "not yet observed in current sources", not "does not exist"._