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HDSN · Hudson Technologies Inc /Ny
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HDSN Hudson Technologies (HDSN) Insider Trading, Ownership & Congress Trades

Wholesale & Retail · Wholesale-machinery, equipment & supplies · CIK 0000925528
Quote by TradingView
Cluster · 9 insidersC-suite buying · 2
House members buying, 1 year
0
STOCK Act, US House only, disclosed up to 45 days after the trade
Funds added, last quarter
72
13F, latest reported quarter

What the filings say about HDSN

Insiders, 180 days
+$6.8M net bought
9 buyers

Hudson Technologies insider trades (Form 4)

Form 4 buys and sells (codes P and S). Grants, option exercises and conversions excluded.

Over the last 180 days, HUDSON TECHNOLOGIES INC /NY insiders bought a net $6.8M of stock across 73 Form 4 purchases and sales, with 9 insiders buying. Source: SEC Form 4 filings, as of 2026-10-28.

Insider
Filed
Shares
Value
Since filing
Hartree Partners, LP
BUY
2026-09-28 SECtraded 2026-09-24
118,549
$604.4K
+1.7%
Context
  • 15 earlier Form 4 trades (code P or S) here by this insider (15 buys), the last on Sep 23, 2026.
  • -14.0% median (-13.6% mean) 90-day return after 7 previous buys.
  • The trade is 2.2% of the 5,348,517 shares held after it.
  • No other insider bought within 30 days.
  • 72 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Insider Hartree Partners, LP bought about $604.4K of HDSN on Sep 24, 2026; 72 funds added in the latest 13F quarter.
Hartree Partners, LP
BUY
2026-09-23 SEC
11,013
$56.2K
+0.2%
Context
  • 14 earlier Form 4 trades (code P or S) here by this insider (14 buys), the last on Sep 21, 2026.
  • -14.0% median (-13.6% mean) 90-day return after 7 previous buys.
  • The trade is 0.2% of the 5,229,968 shares held after it.
  • No other insider bought within 30 days.
  • 72 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Insider Hartree Partners, LP bought about $56.2K of HDSN on Sep 23, 2026; 72 funds added in the latest 13F quarter.
Hartree Partners, LP
BUY
2026-09-23 SECtraded 2026-09-21
2,502
$12.8K
+0.2%
Context
  • 13 earlier Form 4 trades (code P or S) here by this insider (13 buys), the last on Sep 16, 2026.
  • -14.0% median (-13.6% mean) 90-day return after 7 previous buys.
  • The trade is 0.0% of the 5,218,955 shares held after it.
  • No other insider bought within 30 days.
  • 72 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Insider Hartree Partners, LP bought about $12.8K of HDSN on Sep 21, 2026; 72 funds added in the latest 13F quarter.
Hartree Partners, LP
BUY
2026-09-18 SECtraded 2026-09-16
11,136
$56.8K
+1.0%
Context
  • 12 earlier Form 4 trades (code P or S) here by this insider (12 buys), the last on Sep 2, 2026.
  • -14.0% median (-13.6% mean) 90-day return after 7 previous buys.
  • The trade is 0.2% of the 5,216,453 shares held after it.
  • No other insider bought within 30 days.
  • 72 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Insider Hartree Partners, LP bought about $56.8K of HDSN on Sep 16, 2026; 72 funds added in the latest 13F quarter.
Hartree Partners, LP
BUY
2026-09-04 SECtraded 2026-09-02
5,317
$27.1K
-2.1%
Context
  • 11 earlier Form 4 trades (code P or S) here by this insider (11 buys), the last on Aug 25, 2026.
  • -14.0% median (-13.6% mean) 90-day return after 7 previous buys.
  • The trade is 0.1% of the 5,205,317 shares held after it.
  • No other insider bought within 30 days.
  • 72 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Insider Hartree Partners, LP bought about $27.1K of HDSN on Sep 2, 2026; 72 funds added in the latest 13F quarter.
73 transactions on record
Since filing: total return from the first close after the filing to the latest close, dividend-adjusted. Not a forecast.
Context lines are counts over the filings above and returns from our own price history, never a price level. Not investment advice.
See all insider buying · insider selling
Showing the latest few. to see 68 more transactions and use the screener and CSV export. We store only your email; there is no password.
Seven facts, ranked against the sector · Rank is not a forecast
Insiders
net +$6.8M over 180 days
+$1.3M over 90 days · +$6.6M of it by a 10%+ holder
more than 96% of Wholesale & Retail
Congress
no House purchase disclosed in the last 12 months
Funds
72 funds bought in last quarter
below 59% of Wholesale & Retail
Revenue
+4.0% year over year
more than 51% of Wholesale & Retail
Margin
6.8% net margin
more than 80% of Wholesale & Retail
Buybacks
$2.5M repurchased, FY to 2026-06-30
below 81% of Wholesale & Retail
Short interest
7.9% of the float short (float per yahoo 2026-10-27) · 8.6 days to cover · settled 2026-10-15
more than 67% of Wholesale & Retail
The situation: each line is one rule over one dataset
9 insiders independently bought a net $6.8M while the stock fell 17% over six months, with no planned sales queued.
What changed in the last 30 days
Nothing new filed in the last 30 days

Watch HDSN

A free account keeps a watchlist and can send one email a day when insiders, funds or Congress file on the names in it. No password and no card.

The year, with the filings on it
Total return over 12 months. Each marker is a filing; hover or tap one for the detail.
-44.1%12M
-48%-32%-15%+1%2025-102025-122026-022026-042026-062026-082026-10 2025-12-05 · COLEMAN BRIAN F sold $3.6M2026-07-01 · Hartree Partners, LP bought $1.7M2026-07-02 · Hartree Partners, LP bought $1.6M2026-06-30 · Hartree Partners, LP bought $1.2M2026-09-24 · Hartree Partners, LP bought $604.4K2026-08-25 · Hartree Partners, LP bought $501.1K2026-07-29 · Hartree Partners, LP bought $312.1K2026-07-21 · Hartree Partners, LP bought $285.7K2026-07-20 · Hartree Partners, LP bought $106.9K2026-09-16 · Hartree Partners, LP bought $56.8K2026-09-23 · Hartree Partners, LP bought $56.2K2026-08-24 · Hartree Partners, LP bought $52.0K2026-05-13 · Parrillo Richard bought $48.3K2026-08-12 · Hartree Partners, LP bought $28.6K2026-07-06 · Hartree Partners, LP bought $27.8K2026-09-02 · Hartree Partners, LP bought $27.1K2026-05-13 · Sheriff Alan bought $25.4K2026-05-14 · Feeler Jeffrey R bought $25.1K2026-05-13 · Gaglione Kenneth bought $24.5K2026-05-13 · Prouty Eric A bought $24.2K2025-11-17 · ABBATECOLA VINCENT P bought $23.8K2026-05-14 · Mansy Loan Nguyen bought $17.9K2026-05-14 · Parrillo Richard bought $17.9K2026-09-21 · Hartree Partners, LP bought $12.8K2026-05-19 · Bertaux Brian J. bought $9.7K2026-05-14 · Mansy Loan Nguyen bought $7.0K2026-05-14 · Parrillo Richard bought $7.0K2026-07-07 · Hartree Partners, LP bought $3.6K2026-05-14 · Bulgarino Nicole E bought $2.7K
Insider buyInsider sell
Indexed to 100, dividend-adjusted, not a price chart. When a name files heavily, the largest trades are drawn first.

Who owns HDSN: institutional holders (13F)

13F holdings, latest reported quarter
Hartree Partners, LP
4,411,889 sh
$25.3M
WESTERLY CAPITAL MANAGEMENT, LLC
3,380,000 sh
$19.4M
BlackRock, Inc.
2,840,272 sh
$16.3M
DIMENSIONAL FUND ADVISORS LP
1,967,914 sh
$11.3M
VANGUARD CAPITAL MANAGEMENT LLC
1,654,259 sh
$9.5M

Congress trades in HDSN

No Congress trades reported
No House member has disclosed a trade in this stock. See what Congress is buying.

Activist and 5% holders (13D/13G)

No 5%+ ownership filings
Nobody has filed for crossing 5%. That is a fact, not missing data.

HDSN planned insider sales (Form 144)

No planned-sale notices
No insider has filed to sell. Watch this after a run-up.

HDSN mutual fund holders (N-PORT)

Funds ranked by the share of their own portfolio in this stock (N-PORT).
Ultra-Small Company Fund
$1.1M position · as of 2026-06-30
1.1%
Acquirers Small and Micro Deep Value ETF
$210.2K position · as of 2026-05-31
0.8%
First Trust Dow Jones Select MicroCap Index Fund
$705.3K position · as of 2026-06-30
0.3%
Acuitas Small Cap Active ETF
$177.2K position · as of 2026-06-30
0.2%
Royce Quant Small-Cap Quality Value ETF
$49.7K position · as of 2026-06-30
0.2%
Inspire Small/Mid Cap ETF
$489.8K position · as of 2026-05-31
0.2%
SEC N-PORT, monthly, about 60 days late · funds ≥ $10M · % is the share of the fund's own portfolio
Live price
Daily candles from TradingView, under their licence. No filings marked.
Why this name is on the desk
9 insiders reported buying shares.
The record shows a net $6.8M bought by insiders over 180 days, 72 funds added last quarter. Each figure is a federal filing, dated the day it went public.
Backtest this pattern Open the screener
Same sector, ranked by filing activity
Sector by SEC SIC code
CVNAWMTAMZNSNXWRVLVAZOPSMTWLFCTDUPURBNTTSH

HDSN financials

Revenue growth
+4.0%
XBRL, annual
Net margin
6.8%
Ratios from the company's XBRL filings, latest filings
Revenue, TTM
$256.9M
four quarters, 2025-07-01 to 2026-06-30
Net margin, TTM
+3.5%
net income over revenue, 2025-07-01 to 2026-06-30
Free cash flow, TTM
-$34.5M
operating cash flow minus capex, 2025-07-01 to 2026-06-30
Debt to equity
0.12x
long-term 2023-06-30 (36 months older than the period end) plus current 2023-09-30 (33 months older than the period end); equity 2026-06-30
Cash flow to debt
-0.99x
TTM operating cash flow over long-term 2023-06-30 (36 months older than the period end) plus current 2023-09-30 (33 months older than the period end)
Return on equity
+3.6%
TTM net income over average of 2025-06-30 and 2026-06-30
Return on assets
+2.8%
TTM net income over average of 2025-06-30 and 2026-06-30
Return on invested capital
+3.2%
operating income after a 38.7% effective tax rate, over long-term 2023-06-30 (36 months older than the period end) plus current 2023-09-30 (33 months older than the period end) plus average of 2025-06-30 and 2026-06-30 minus cash
Return on capital employed
+4.5%
operating income (EBIT proxy) over average of 2025-06-30 and 2026-06-30 minus current liabilities
P/E, trailing
24.95x
close 2026-10-26 over four quarters of diluted EPS, 2025-07-01 to 2026-06-30
Enterprise value
$225.0M
market value at close 2026-10-26 on 2026-07-27 shares, plus long-term 2023-06-30 (36 months older than the period end) plus current 2023-09-30 (33 months older than the period end), minus cash 2026-06-30
FCF yield
-15.6%
TTM free cash flow over market value at close 2026-10-26
PEG, trailing
n/a
trailing EPS growth -49%, PEG needs growth
Price as of 2026-10-26. Hover or tap a tile for its yearly and quarterly history.
Method
TTM is four consecutive fiscal quarters; Q4 is the year minus nine months when not filed. Returns use the average of opening and closing balances. EBIT is approximated by operating income. PEG uses trailing EPS growth.
Fundamentals
Annual figures from XBRL filings. Pick a past date to see them as known then.
2025-122024-122023-122022-12
Revenue$246.6M$237.1M$289.0M$325.2M
Gross profit$62.1M$65.7M$111.5M$162.9M
Operating income$18.6M$29.3M$78.2M$131.5M
Net income$16.7M$24.4M$52.2M$103.8M
EPS (diluted)0.370.521.102.20
Operating cash flow-$3.2M$91.8M$58.5M$62.8M
Cash$39.5M$70.1M$12.4M$5.3M
Long-term debtn/an/an/a$39.0M
Buybacks$20.0M$8.1Mn/an/a
SEC XBRL, fiscal years, as known on 2026-10-28

HDSN Stock Sonar score 6/7 axes

Find similar shapesCompare

HDSN ranks highest on insider conviction (98th percentile) and growth (51st), and lowest on profitability (33rd), among Wholesale & Retail peers.

ProfitHealthGrowthInsidersInstitutionsRisk
Profitability
33
Inputs
  • Return on equity+3.6% · 39 pct, sector of 206
  • Return on assets+2.8% · 52 pct, sector of 257
  • Return on invested capital+3.2% · 4 pct, sector of 109
  • Return on capital employed+4.5% · 39 pct, sector of 220
Financial health
38
Inputs
  • Debt to equity0.12x · 68 pct, sector of 222
  • Cash flow to debt-0.99x · 9 pct, sector of 210
Growth
51
Inputs
  • Revenue growth, YoY+4.0% · 51 pct, sector of 311
  • Backlog growth, YoYno backlog line filed, or no year-earlier backlog
Insider conviction
98
Inputs
  • Net Form 4 buying (codes P and S), 180d$6.8M · 96 pct, sector of 187
  • Insider buyers, 180d9 · 100 pct, sector of 189
Institutional and government
44
Inputs
  • Funds adding, latest quarter72 · 41 pct, sector of 234
  • Congress net buyers, 365dno Congress trades in 365 days
  • Federal contracts, 180dno federal contracts in 180 days
  • Lobbying spend, 4 quarters$560K · 47 pct, sector of 37
Risk and compliance
39
Inputs
  • Short interest, % of float+7.9% · 37 pct, sector of 317
  • Recalls per $1B revenue, 3ynot measured for this sector, almost no peer has an event
  • EPA cases per $1B revenue, 5y4.05 per $1B · 0 pct, sector of 242
  • New text in Risk Factors, latest 10-K+5.7% · 79 pct, sector of 226
1 not measured: US patents
  • US patents needs 1 of 2 inputs, 0 present: patent data not loaded yet

6 of 7 axes scored. Each is a percentile against sector peers (all companies when the sector is thin); higher is better. An unscored axis is unmeasured, not low. How it is scored

HDSN filings, in plain words

Are Hudson Technologies insiders buying or selling HDSN?

In the 180 days to 2026-10-28, Hudson Technologies insiders were net buyers, a net $6.8M across purchases and sales reported on Form 4, by 9 buyers.

Read the full summary

In the 180 days to 2026-10-28, Hudson Technologies insiders were net buyers of HDSN, a net $6.8M across purchases and sales reported on Form 4 by 9 buyers. Most of that figure, $6.6M, came from a holder of 10% or more rather than an officer or director. 9 insiders reported purchases in that window. Each figure is counted from SEC and House filings as of 2026-10-28, dated the day the filing was made public.

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