Hydrofarm Holdings Group, Inc.
HYFM- Exchange
- Nasdaq
- Industry
- Wholesale-Miscellaneous Nondurable Goods
- SEC CIK
- 0001695295
No open-market purchases or sales by Hydrofarm Holdings Group, Inc. insiders were filed in the last 90 days; 23 institutions reported holding it in 13F filings for Q2 2026, worth $269.5K in total; no superinvestor holds it.
Holders of 5% or more of HYFM
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Hydrofarm Holdings Group, Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Bogaczyk Janusz Michal | 13G/A | 9.80%454.0K shares | +0.80 ppfrom 9.00% | Oct 3, 20246 filings | Mar 25, 2025 | SEC |
| Dumont Master Fund LP | 13G/A | 7.09%327.0K shares | – | Mar 12, 20251 filing | Mar 12, 2025 | SEC |
| Yetter Richard Christopher | 13D | 6.55%305.0K shares | New | Oct 14, 20251 filing | Oct 14, 2025 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
13 Schedule 13D and 13G filings on Hydrofarm Holdings Group, Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Oct 14, 20255:32 PM ET | Yetter Richard Christopherand 3 others | 13D | 6.55%305.0K shares | New | Oct 1, 2025 | SEC |
| Mar 25, 20252:19 PM ET | Bogaczyk Janusz Michal | 13G/A | 9.80%454.0K shares | +0.80 ppfrom 9.00% | Mar 21, 2025 | SEC |
| Mar 12, 20252:39 PM ET | Dumont Master Fund LPand 2 others | 13G/A | 7.09%327.0K shares | – | Feb 12, 2025 | SEC |
| Mar 5, 20259:04 AM ET | Bogaczyk Janusz Michal | 13G/A | 9.00%413.5K shares | +1.90 ppfrom 7.10% | Mar 3, 2025 | SEC |
| Jan 29, 20256:01 PM ET | Rapp Michael | 13G/A | 3.70%1.73M shares | –Below 5% | Dec 31, 2024 | SEC |
| Nov 12, 20246:06 PM ET | Bogaczyk Janusz Michal | 13G/A | 7.10%3.26M shares | +0.70 ppfrom 6.40% | Nov 7, 2024 | SEC |
| Oct 15, 20247:53 PM ET | Bogaczyk Janusz Michal | 13G/A | 6.40%2.93M shares | +0.50 ppfrom 5.90% | Oct 11, 2024 | SEC |
| Oct 9, 20242:10 PM ET | Bogaczyk Janusz Michal | 13G/A | 5.90%2.72M shares | +0.40 ppfrom 5.50% | Oct 7, 2024 | SEC |
| Oct 3, 20241:40 PM ET | Bogaczyk Janusz Michal | 13G | 5.50%2.53M shares | New | Sep 20, 2024 | SEC |
| Feb 10, 2021 | Wardenburg Peter | 13GOld format | – | New | – | SEC |
| Feb 10, 2021 | Tomes John | 13GOld format | – | New | – | SEC |
| Feb 10, 2021 | Payne Chris | 13GOld format | – | New | – | SEC |
| Jan 7, 2021 | Rapp Michael | 13GOld format | – | New | – | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Hydrofarm Holdings Group, Inc. shares.
No Form 144 notices for Hydrofarm Holdings Group, Inc. are on file.