Hydrofarm Holdings HYFM Insider Ownership

NASDAQ HYFM
$0.75 -0.05 (-5.74%)
As of: Oct 20, 2026 · 3:59 PM EDT

Insider Holdings by Owner

837.27K Shares

Insider Ownership Statistics

as of 30 Sep, 2026
Insider Ownership
14.54%
▼-0.019% pp QoQ
Shares Held by Insiders
699.95K
filed for Sep 2026
▼-0.13% QoQ
Shares Outstanding
4.81Mn
4,814,612 shares
Direct Holdings
699.95K
Indirect: 0
Net Shares Traded (QoQ)
-908
net selling in Sep 2026
Insiders Holding Shares
13
with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding
Latest —
Average ownership —
Peak ownership —

Shares Purchased/Sold by Insiders

Bought Sold
Latest quarter —
Net over range —
Buying quarters —

Insider Ownership Summary

Over the trailing 12 months, HYFM insiders sold $7,374 worth of shares (4.14K shares) in open-market trades, with no open-market purchases.

Form 4 Holdings

Insiders Holding HYFM

Insiders 13
Shares held 837.27K
Of outstanding 17.39%
# Insider Position Direct Indirect Total Share of Insiders Last Filed
1 William Douglas Toler Chief Executive Officer 221,672 0 221,672 26.5% 08 Jan, 2026
2 Renah Persofsky Director 106,949 0 106,949 12.8% 25 Jun, 2026
3 Patrick Chung Director 106,249 0 106,249 12.7% 25 Jun, 2026
4 Melisa Denis Director 103,794 0 103,794 12.4% 25 Jun, 2026
5 Susan Peters Director 76,649 0 76,649 9.2% 10 Jun, 2025
6 Bruce John Lindeman Chief Executive Officer 56,683 0 56,683 6.8% 19 Aug, 2025
7 Richard Christopher Yetter Director 50,000 0 50,000 6.0% 25 Jun, 2026
8 Richard D Moss Director 47,049 0 47,049 5.6% 10 Jun, 2024
9 Terence Fitch President 28,450 0 28,450 3.4% 06 Jun, 2022
10 Mark S Parker President 18,558 0 18,558 2.2% 11 Aug, 2026
11 Kevin Patrick O'Brien Chief Financial Officer 13,222 0 13,222 1.6% 08 Jan, 2026
12 Erica Ackerman Cao And Corporate Controller 7,402 0 7,402 0.9% 11 Aug, 2026
13 Joseph D Rumley Chief Accounting Officer 596 0 596 0.1% 22 Mar, 2022

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

237 Insider Transactions

Source SEC Form 4
Latest quarter Sep 2026
Download Data
Date Insider Position Transaction Shares Price Value Shares Held After Ownership
08 Aug, 2026 Erica Ackerman Cao And Corporate Controller Disposed F 138 $1.60 $221 7,402 Direct
08 Aug, 2026 Mark S Parker President Disposed F 740 $1.60 $1.18K 18,558 Direct
23 Jun, 2026 Patrick Chung Director Acquired A 30,000 $0.00 $0 91,148 Direct
23 Jun, 2026 Melisa Denis Director Acquired A 30,000 $0.00 $0 88,423 Direct
23 Jun, 2026 Richard Christopher Yetter Director Acquired A 30,000 $0.00 $0 50,000 Direct
23 Jun, 2026 Renah Persofsky Director Acquired A 30,000 $0.00 $0 91,498 Direct
06 Jan, 2026 Mark S Parker President Disposed F 1,672 $1.51 $2.52K 19,328 Direct
06 Jan, 2026 Kevin Patrick O'Brien Chief Financial Officer Disposed S 1,150 $1.51 $1.74K 13,222 Direct
06 Jan, 2026 William Douglas Toler Chief Executive Officer Disposed F 5,189 $1.51 $7.84K 221,672 Direct
06 Jan, 2026 Erica Ackerman Cao And Corporate Controller Disposed F 687 $1.51 $1.04K 7,540 Direct
04 Dec, 2025 Melisa Denis Director Disposed S 2,875 $1.88 $5.41K 58,543 Direct
05 Dec, 2025 Melisa Denis Director Disposed S 120 $1.92 $230 58,423 Direct
01 Oct, 2025 Richard Christopher Yetter Director Acquired A 20,000 $0.00 $0 20,000 Direct
18 Aug, 2025 William Douglas Toler Director, Other Disposed F 445 $4.51 $2.01K 226,861 Direct
18 Aug, 2025 Bruce John Lindeman Chief Executive Officer Disposed F 496 $4.51 $2.24K 56,683 Direct
18 Aug, 2025 Kevin Patrick O'Brien Chief Financial Officer Disposed F 48 $4.51 $216 14,372 Direct
18 Aug, 2025 Mark S Parker President Disposed F 370 $4.51 $1.67K 21,000 Direct
11 Aug, 2025 Erica Ackerman Cao And Corporate Controller Disposed F 52 $4.49 $233 8,227 Direct
11 Aug, 2025 Mark S Parker President Disposed F 771 $4.49 $3.46K 21,370 Direct
09 Jun, 2025 Susan Peters Director Acquired A 30,000 $0.00 $0 61,348 Direct