---
title: "PARKER MARK S — Ownership Dossier"
canonical: https://whiteintel.dev/entity/451f7fb2-feb8-51d2-b3f1-d8d8eefced1d
json: https://whiteintel.dev/api/public/dossier/451f7fb2-feb8-51d2-b3f1-d8d8eefced1d
identifier: sec:0001915363
jurisdiction: US
risk: Medium
source: WhiteIntel corporate-ownership graph
---

# PARKER MARK S

**Type:** Person  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001915363`  
**Risk level:** Medium  
**Canonical dossier:** https://whiteintel.dev/entity/451f7fb2-feb8-51d2-b3f1-d8d8eefced1d  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/451f7fb2-feb8-51d2-b3f1-d8d8eefced1d  

## Ownership & control

### Holdings / subsidiaries

- **HYDROFARM HOLDINGS GROUP, INC.** (officer) — https://whiteintel.dev/entity/4a938627-6552-5e86-81e6-d70562093cc3
- **HYDROFARM HOLDINGS GROUP, INC.** (officer) — https://whiteintel.dev/entity/4a938627-6552-5e86-81e6-d70562093cc3
- **HYDROFARM HOLDINGS GROUP, INC.** (officer) — https://whiteintel.dev/entity/4a938627-6552-5e86-81e6-d70562093cc3
- **HYDROFARM HOLDINGS GROUP, INC.** (officer) — https://whiteintel.dev/entity/4a938627-6552-5e86-81e6-d70562093cc3

## 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 **PARKER MARK S** — https://whiteintel.dev/entity/451f7fb2-feb8-51d2-b3f1-d8d8eefced1d · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **PARKER MARK S**. Human view: https://whiteintel.dev/entity/451f7fb2-feb8-51d2-b3f1-d8d8eefced1d · Structured JSON: https://whiteintel.dev/api/public/dossier/451f7fb2-feb8-51d2-b3f1-d8d8eefced1d._

_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"._