# Hydrofarm Holdings Group, Inc. (HYFM) insider trading

> In the 12 months to Oct 31, 2026, one HYFM insider reported open-market sales of $5.6K across 1 filing; one president bought $20.0K.

Canonical: https://massive.com/quote/hyfm/insider-trading
Latest filing: 2026-10-29 (last 12 months; source: SEC EDGAR)
Source: Massive (https://massive.com/docs/llms.txt)

## Summary

| Measure | Value | Detail |
| --- | --- | --- |
| Open-market sales | $5.6K | 1 filing · 1 insider |
| Open-market purchases | $20.0K | 1 filing · Mark S. Parker, President |

## Open-market trades by insider

| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
| --- | --- | --- | --- | --- | --- | --- |
| Mark S. Parker | President | — | $20.0K | 1 | — | 2026-10-29 |
| Melisa Denis | Director | $5.6K | — | 1 | — | 2025-12-08 |

## Open-market trades by filing

2 filings in the last 12 months, newest first.

| Filed | Traded | Insider | Role | Type | Shares | Avg price | Value | Held after | Filing |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 2026-10-29 | 2026-10-27 | Mark S. Parker | President | Purchase | 22,099 | $0.91 | $20.0K | 40,657 | — |
| 2025-12-08 | 2025-12-04 | Melisa Denis | Director | Sale | 2,995 | $1.88 | $5.6K | 58,423 | — |

## Other insider activity (not market trades)

- Tax withholding: 5 records
- Tax withholding (sold to cover): 1 record
- Grants and awards: 7 records

Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.

## How to read this page

- **Open-market purchase or sale**: A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
- **Filing date**: Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.

## FAQ

### Has Hydrofarm Holdings Group, Inc.'s CEO sold stock?

No. William Douglas Toler (CEO) made no open-market sales filed as CEO in the last 12 months.

### How current is HYFM’s insider data?

These are HYFM Form 4 filings from the last year, refreshed daily. The Massive Form 4 API has the full, continuously updated record.

### What counts as an open-market buy or sell?

Only purchases and sales at the market price. Option exercises, grants, gifts, and shares withheld for taxes are reported on Form 4 but are left out of the buy and sell totals.

## Live data

This page joins two Massive endpoints: Form 4 filings and daily prices. The HYFM Form 4 request:

- `GET https://api.massive.com/stocks/filings/vX/form-4?tickers=HYFM&filing_date.gte=2025-10-31&sort=filing_date.desc&limit=500`

Requests need a Massive API key. API reference for agents: https://massive.com/docs/llms.txt. Connect an AI agent through the Massive MCP server: https://massive.com/docs/ai-tools.

## Related

- [Hydrofarm Holdings Group, Inc. (HYFM) stock price](https://massive.com/quote/hyfm.md)
- [Recent insider trading](https://massive.com/quote/insider-trading.md)
- [Markets overview](https://massive.com/quote/index.md)

Nothing here is investment advice. Data and content are provided for informational purposes under the Massive Terms of Service: https://massive.com/terms