HDSNHudson Technologies, Inc.Basic Materials · Chemicals - Specialtyas of 2026-09-16
Horizon

Issued 2026-09-16 at $5.21 · now $5.21 (2026-09-16, +0.0% since)

Based on its own history, a month from the 2026-09-16 close, HDSN has typically landed between $4.08 and $6.54 — a range of −21.7% to +25.5% from the issuance price $5.21.

Range of outcomes in historically similar periods — not a price prediction. Ranges are scored publicly on /methodology.
  • Actual close
  • Typical path (median)
  • Middle 50% of outcomes
  • 90% range

5,002 overlapping 1 month windows · 2006-09-26 – 2026-08-17 · basis climatology · forecast (batch). Probability up 53.9% (90% CI 51.7–56.1%, ≈1,408 obs).

The cone is anchored at the 2026-09-16 issuance close ($5.21) — the price the forecast resolves against on 2026-10-15, not the latest close. The drawn path shape is illustrative (bands widen with √t); every labeled number is real — the anchor, the scored batch p90/IQR endpoints, and the typical move.

Where HDSN has typically landed a month from the 2026-09-16 close of $5.21 — the range is history, not a prediction.

$4.08worst · -21.7%$6.54best · +25.5%
  • now $5.21 (+0.0%)
  • typicalThe typical outcome — half of similar past periods did better and half did worse (not an average, so a few wild periods don't skew it). $5.23 (+0.5%)
  • middle 50%The central range of outcomes — half of similar past periods landed inside it, a quarter finished above, a quarter below. $4.76–$5.71
  • 90% rangeA nine-in-ten range — in about nine of every ten similar past periods the outcome stayed within these bounds. $4.08–$6.54
Actual 1-month windows behind the coneiEvery overlapping 1-month window in this security's own price history was ranked by realized return; shown are the 3 worst and 3 best of 5,002 windows spanning 2006-09-26 to 2026-09-16. Not cherry-picked — these are the extremes of the full sample. Max drop / max rise are the deepest and highest points reached within each window. See /methodology.
StartReturnMax dropMax rise
3 worst
2019-05-22−62.5%−62.5%+0.0%
2019-05-21−59.0%−59.0%+5.4%
2008-09-10−57.7%−57.7%+0.0%
3 best
2012-01-04+115.3%+0.0%+115.3%
2012-01-05+114.3%+0.0%+114.3%
2019-08-23+112.9%+0.0%+138.7%

5,002 overlapping windows · 2006-09-26 – 2026-09-16 · not cherry-picked

Seasonality · by month iHow this security has tended to do in each calendar month historically — a frequency, never a prediction.

iFor each calendar month, the share of years this security closed higher than the month before, and the average month-over-month return, over ~20 years of its own price history. Cells are shaded by average return. This is historical frequency, not a prediction — no month is a signal.
Jan
65%
+10.0%
n=20
Feb
45%
+3.7%
n=20
Mar
55%
+3.6%
n=20
Apr
60%
+6.5%
n=20
May
50%
+1.7%
n=20
Jun
45%
−2.8%
n=20
Jul
50%
+2.5%
n=20
Aug
35%
−2.5%
n=20
Sep
45%
−2.8%
n=20
Oct
45%
−2.2%
n=20
Nov
40%
+0.8%
n=20
Dec
70%
+8.8%
n=20

Up-frequency and average month-over-month return · historical frequency, not a prediction

Reported insider & political trades

Every Form 4 the people closest to this company have filed with the SEC — plotted against the share price, aggregated by month, and shown with the gap between when each trade happened and when it was disclosed. A public record, not advice.

Share price & reported tradesMonthly open-market valueReporting lag — trade date to filing date2026-092026-082026-072026-062026-052026-042026-032026-022026-012025-122025-112025-102025-092025-08$10$52026-09-02: 1 insider purchase, $27K — Hartree Partners, LP2026-08-25: 1 insider purchase, $501K — Hartree Partners, LP2026-08-24: 1 insider purchase, $52K — Hartree Partners, LP2026-08-12: 1 insider purchase, $29K — Hartree Partners, LP2026-07-29: 1 insider purchase, $312K — Hartree Partners, LP2026-07-21: 1 insider purchase, $286K — Hartree Partners, LP2026-07-20: 1 insider purchase, $107K — Hartree Partners, LP2026-07-07: 1 insider purchase, $4K — Hartree Partners, LP2026-07-06: 1 insider purchase, $28K — Hartree Partners, LP2026-07-02: 1 insider purchase, $1.6M — Hartree Partners, LP2026-07-01: 1 insider purchase, $1.7M — Hartree Partners, LP2026-06-30: 1 insider purchase, $1.2M — Hartree Partners, LP2026-05-19: 1 insider purchase, $10K — Bertaux Brian J.2026-05-14: 6 insider purchases, $77K — Feeler Jeffrey R, Mansy Loan Nguyen, Parrillo Richard, Bulgarino Nicole E …2026-05-13: 3 insider purchases, $74K — Sheriff Alan, Gaglione Kenneth, Prouty Eric A2025-12-05: 1 insider sale, $3.6M — COLEMAN BRIAN F2025-11-17: 1 insider purchase, $24K — ABBATECOLA VINCENT P2025-11: 1 open-market purchase, $24K2025-12: 1 open-market sale, $3.6M2026-05: 10 open-market purchases, $161K2026-06: 1 open-market purchase, $1.2M2026-07: 7 open-market purchases, $4.1M2026-08: 3 open-market purchases, $582K2026-09: 1 open-market purchase, $27K↑ buys↓ salestenPercentOwner Hartree Partners, LP — Purchase on 2026-09-02, filed 2 days after the tradetenPercentOwner Hartree Partners, LP — Purchase on 2026-08-25, filed 1 day after the tradetenPercentOwner Hartree Partners, LP — Purchase on 2026-08-24, filed 2 days after the tradetenPercentOwner Hartree Partners, LP — Purchase on 2026-08-12, filed 2 days after the tradetenPercentOwner Hartree Partners, LP — Purchase on 2026-07-29, filed 2 days after the tradetenPercentOwner Hartree Partners, LP — Purchase on 2026-07-21, filed 1 day after the tradetenPercentOwner Hartree Partners, LP — Purchase on 2026-07-20, filed 2 days after the tradetenPercentOwner Hartree Partners, LP — Purchase on 2026-07-07, filed 1 day after the tradetenPercentOwner Hartree Partners, LP — Purchase on 2026-07-06, filed 2 days after the tradetenPercentOwner Hartree Partners, LP — Purchase on 2026-07-02, filed same daytenPercentOwner Hartree Partners, LP — Purchase on 2026-07-01, filed 1 day after the tradetenPercentOwner Hartree Partners, LP — Purchase on 2026-06-30, filed 2 days after the tradeofficer Bertaux Brian J. — Purchase on 2026-05-19, filed 2 days after the tradedirector Feeler Jeffrey R — Purchase on 2026-05-14, filed 1 day after the tradedirector Mansy Loan Nguyen — Purchase on 2026-05-14, filed 1 day after the tradedirector Parrillo Richard — Purchase on 2026-05-14, filed 1 day after the tradedirector Parrillo Richard — Purchase on 2026-05-14, filed 1 day after the tradedirector Mansy Loan Nguyen — Purchase on 2026-05-14, filed 1 day after the tradedirector Bulgarino Nicole E — Purchase on 2026-05-14, filed 1 day after the tradedirector Sheriff Alan — Purchase on 2026-05-13, filed 2 days after the tradedirector Gaglione Kenneth — Purchase on 2026-05-13, filed 2 days after the tradedirector Prouty Eric A — Purchase on 2026-05-13, filed 2 days after the tradedirector COLEMAN BRIAN F — Sale on 2025-12-05, filed 4 days after the tradedirector ABBATECOLA VINCENT P — Purchase on 2025-11-17, filed 1 day after the trade
DatePersonRoleActionShares @ priceValueOwnership Δvs S&P 1mvs S&P 6mOwned afterFiling
2026-09-02Hartree Partners, LPtenPercentOwnerPurchase5,317 @ $5.10$27K+0.1% of holdingnot yet — horizon still opennot yet — horizon still open5,205,317Form 4 · filed 2 days after the trade
2026-08-25Hartree Partners, LPtenPercentOwnerPurchase91,166 @ $5.50$501K+1.8% of holdingnot yet — horizon still opennot yet — horizon still open5,200,000Form 4 · filed 1 day after the trade
2026-08-24Hartree Partners, LPtenPercentOwnerPurchase9,446 @ $5.50$52K+0.2% of holdingnot yet — horizon still opennot yet — horizon still open5,108,834Form 4 · filed 2 days after the trade
2026-08-12Hartree Partners, LPtenPercentOwnerPurchase5,198 @ $5.50$29K+0.1% of holding−2.3%not yet — horizon still open5,099,388Form 4 · filed 2 days after the trade
2026-07-29Hartree Partners, LPtenPercentOwnerPurchase52,104 @ $5.99$312K+1.0% of holding−11.9%not yet — horizon still open5,094,190Form 4 · filed 2 days after the trade
2026-07-21Hartree Partners, LPtenPercentOwnerPurchase47,708 @ $5.99$286K+1.0% of holding−5.1%not yet — horizon still open5,042,086Form 4 · filed 1 day after the trade
2026-07-20Hartree Partners, LPtenPercentOwnerPurchase17,842 @ $5.99$107K+0.4% of holding−11.1%not yet — horizon still open4,994,378Form 4 · filed 2 days after the trade
2026-07-07Hartree Partners, LPtenPercentOwnerPurchase600 @ $5.99$4K+0.0% of holding−4.7%not yet — horizon still open4,976,536Form 4 · filed 1 day after the trade
2026-07-06Hartree Partners, LPtenPercentOwnerPurchase4,634 @ $5.99$28K+0.1% of holding+2.3%not yet — horizon still open4,975,936Form 4 · filed 2 days after the trade
2026-07-02Hartree Partners, LPtenPercentOwnerPurchase271,302 @ $5.97$1.6M+5.8% of holding+2.3%not yet — horizon still open4,971,302Form 4 · filed same day
2026-07-01Hartree Partners, LPtenPercentOwnerPurchase288,111 @ $5.88$1.7M+6.5% of holding+6.4%not yet — horizon still open4,700,000Form 4 · filed 1 day after the trade
2026-06-30Hartree Partners, LPtenPercentOwnerPurchase204,789 @ $5.68$1.2M+4.9% of holding+1.7%not yet — horizon still open4,411,889Form 4 · filed 2 days after the trade
2026-05-19Bertaux Brian J.officerPurchase2,000 @ $4.87$10Kownership Δ n/a+18.2%not yet — horizon still open2,000Form 4 · filed 2 days after the trade
2026-05-14Feeler Jeffrey RdirectorPurchase5,100 @ $4.92$25K+125.5% of holding+14.6%not yet — horizon still open9,165Form 4 · filed 1 day after the trade
2026-05-14Mansy Loan NguyendirectorPurchase3,600 @ $4.96$18K+17.5% of holding+14.6%not yet — horizon still open24,195Form 4 · filed 1 day after the trade
2026-05-14Parrillo RicharddirectorPurchase3,600 @ $4.96$18K+17.5% of holding+14.6%not yet — horizon still open24,195Form 4 · filed 1 day after the trade
2026-05-14Parrillo RicharddirectorPurchase1,400 @ $4.97$7K+5.8% of holding+14.6%not yet — horizon still open25,595Form 4 · filed 1 day after the trade
2026-05-14Mansy Loan NguyendirectorPurchase1,400 @ $4.97$7K+5.8% of holding+14.6%not yet — horizon still open25,595Form 4 · filed 1 day after the trade
2026-05-14Bulgarino Nicole EdirectorPurchase550 @ $4.84$3K+5.2% of holding+14.6%not yet — horizon still open11,048Form 4 · filed 1 day after the trade
2026-05-13Sheriff AlandirectorPurchase5,200 @ $4.88$25K+127.9% of holding+17.6%not yet — horizon still open9,265Form 4 · filed 2 days after the trade
2026-05-13Gaglione KennethdirectorPurchase5,000 @ $4.89$24Kownership Δ n/a+17.6%not yet — horizon still open5,000Form 4 · filed 2 days after the trade
2026-05-13Prouty Eric AdirectorPurchase5,000 @ $4.84$24K+3.4% of holding+17.6%not yet — horizon still open153,852Form 4 · filed 2 days after the trade
2025-12-05COLEMAN BRIAN FdirectorSale484,616 @ $7.40$3.6M−20.0% of holding−4.6%−32.3%1,944,312Form 4 · filed 4 days after the trade
2025-11-17ABBATECOLA VINCENT PdirectorPurchase3,500 @ $6.79$24K+2.1% of holding+10.0%−37.3%169,748Form 4 · filed 1 day after the trade

The vs-S&P columns are a labeled look-back on what the stock did after each filing, measured against the index over the same window. Descriptive history, not a claim about the person or a reason to trade.

41 award / exercise / gift records — not counted as purchases

Awards, option exercises, gifts and tax-withholding disposals are shown separately and never counted as open-market purchases or sales — they carry no conviction information.

DatePersonRoleActionSharesOwned afterFiling
2026-06-17Mansy Loan NguyendirectorAward / grant8,88134,476Form 4
2026-06-17Mansy Loan NguyendirectorAward / grant21,18621,186Form 4
2026-06-17Parrillo RicharddirectorAward / grant31,78031,780Form 4
2026-06-17Prouty Eric AdirectorAward / grant4,440158,292Form 4
2026-06-17Prouty Eric AdirectorAward / grant21,18621,186Form 4
2026-06-17Sheriff AlandirectorAward / grant3,21912,484Form 4
2026-06-17Sheriff AlandirectorAward / grant15,36015,360Form 4
2026-06-17Feeler Jeffrey RdirectorAward / grant3,21912,384Form 4
2026-06-17Bulgarino Nicole EdirectorAward / grant31,78031,780Form 4
2026-06-17Feeler Jeffrey RdirectorAward / grant15,36015,360Form 4
2026-04-10Sheriff AlandirectorAward / grant4,0654,065Form 4
2026-04-10Feeler Jeffrey RdirectorAward / grant4,0654,065Form 4
2026-01-08Houghton KathleendirectorWithheld for tax44,873116,290Form 4
2026-01-08Houghton KathleendirectorWithheld for tax34,382158,618Form 4
2026-01-08Houghton KathleendirectorOption exercise50,888193,000Form 4
2026-01-08Houghton KathleendirectorWithheld for tax21,797142,112Form 4
2026-01-08Houghton KathleendirectorOption exercise120,000161,163Form 4
2026-01-08Houghton KathleendirectorOption exercise47,619163,909Form 4
2026-01-08Houghton KathleendirectorOption exercise50,8880Form 4
2026-01-08Houghton KathleendirectorOption exercise120,0000Form 4
2026-01-08Houghton KathleendirectorOption exercise47,6190Form 4
2025-11-24Gaglione KennethdirectorAward / grant216,309216,309Form 4
2025-09-24ABBATECOLA VINCENT PdirectorWithheld for tax3,519166,248Form 4
2025-09-24ABBATECOLA VINCENT PdirectorOption exercise4,744169,767Form 4
2025-09-24ABBATECOLA VINCENT PdirectorOption exercise4,7440Form 4
2025-07-31Prouty Eric AdirectorOption exercise4,744152,565Form 4
2025-07-31Prouty Eric AdirectorWithheld for tax3,713148,852Form 4
2025-07-31Prouty Eric AdirectorOption exercise4,7440Form 4
2025-06-18Parrillo RicharddirectorAward / grant3,182185,746Form 4
2025-06-18Parrillo RicharddirectorAward / grant13,69813,698Form 4
2025-06-18ABBATECOLA VINCENT PdirectorAward / grant13,69813,698Form 4
2025-06-18ABBATECOLA VINCENT PdirectorAward / grant3,182165,023Form 4
2025-06-18Bulgarino Nicole EdirectorAward / grant3,18210,498Form 4
2025-06-18Bulgarino Nicole EdirectorAward / grant13,69813,698Form 4
2025-06-18Mansy Loan NguyendirectorAward / grant6,36520,595Form 4
2025-06-18Prouty Eric AdirectorAward / grant3,182147,821Form 4
2025-06-18Prouty Eric AdirectorAward / grant13,69813,698Form 4
2025-06-18Mansy Loan NguyendirectorAward / grant13,69813,698Form 4
2025-03-13Bertaux Brian J.officerAward / grant55,10955,109Form 4
2025-03-13Houghton KathleendirectorAward / grant72,47772,477Form 4

Source: SEC Form 4 filings. Each row links to its original filing.

Across 2012–2021, stocks where a CEO, C-suite officer, or director had recently made an open-market common-stock purchase ran about +28 bp per month above the universe average (n=34,268 stock-weeks). A historical tendency, not a prediction.

Congressional disclosures

No congressional trades disclosed for this company.

Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.