CLHClean Harbors, Inc.Industrials · Waste Managementas of 2026-09-16
Horizon

Issued 2026-09-16 at $318.96 · now $318.96 (2026-09-16, +0.0% since)

Based on its own history, a month from the 2026-09-16 close, CLH has typically landed between $286.85 and $357.43 — a range of −10.1% to +12.1% from the issuance price $318.96.

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

5,003 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 ($318.96) — 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 CLH has typically landed a month from the 2026-09-16 close of $318.96 — the range is history, not a prediction.

$286.85worst · -10.1%$357.43best · +12.1%
  • now $318.96 (+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). $326.63 (+2.4%)
  • middle 50%The central range of outcomes — half of similar past periods landed inside it, a quarter finished above, a quarter below. $311.42–$341.84
  • 90% rangeA nine-in-ten range — in about nine of every ten similar past periods the outcome stayed within these bounds. $286.85–$357.43
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 5,003 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
2020-02-18−63.8%−63.8%+2.0%
2020-02-19−55.7%−64.2%+0.7%
2020-02-21−54.6%−64.1%+0.0%
3 best
2020-03-18+70.8%+0.0%+80.4%
2020-10-28+39.8%−0.7%+41.6%
2022-07-14+38.9%+0.0%+38.9%

5,003 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
55%
+2.0%
n=20
Feb
55%
+0.8%
n=20
Mar
55%
+2.1%
n=20
Apr
70%
+2.6%
n=20
May
70%
+1.6%
n=20
Jun
70%
+1.4%
n=20
Jul
65%
+2.0%
n=20
Aug
65%
+2.5%
n=20
Sep
40%
−2.6%
n=20
Oct
50%
+1.7%
n=20
Nov
50%
+1.8%
n=20
Dec
65%
+1.7%
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$326$2022026-08-14: 1 insider sale, $803K — GERSTENBERG ERIC W2026-08-03: 1 insider sale, $248K — Robertson Andrea2026-05-26: 1 insider sale, $226K — States Lauren2026-03-18: 2 insider sales, $534K — GERSTENBERG ERIC W, Reed Marcy L.2026-03-17: 1 insider sale, $1.4M — Weber Brian P2026-03-04: 1 insider sale, $29.3M — MCKIM ALAN S2026-02-23: 1 insider sale, $700K — GERSTENBERG ERIC W2026-02-20: 2 insider sales, $1.8M — Gabriel Sharon M., Dugas Eric J.2026-02-19: 2 insider sales, $28.3M — MCKIM ALAN S, Welch John R.2025-12-16: 1 insider sale, $145K — GERSTENBERG ERIC W2025-08: 1 open-market purchase, $467K2025-12: 1 open-market sale, $145K2026-02: 5 open-market sales, $30.8M2026-03: 4 open-market sales, $31.2M2026-05: 1 open-market sale, $226K2026-08: 2 open-market sales, $1.1M↑ buys↓ salesofficer GERSTENBERG ERIC W — Sale on 2026-08-14, filed 4 days after the tradedirector Robertson Andrea — Sale on 2026-08-03, filed same daydirector States Lauren — Sale on 2026-05-26, filed 1 day after the tradeofficer GERSTENBERG ERIC W — Sale on 2026-03-18, filed 1 day after the tradedirector Reed Marcy L. — Sale on 2026-03-18, filed 1 day after the tradeofficer Weber Brian P — Sale on 2026-03-17, filed same daydirector MCKIM ALAN S — Sale on 2026-03-04, filed 1 day after the tradeofficer GERSTENBERG ERIC W — Sale on 2026-02-23, filed 1 day after the tradeofficer Gabriel Sharon M. — Sale on 2026-02-20, filed same dayofficer Dugas Eric J. — Sale on 2026-02-20, filed same daydirector MCKIM ALAN S — Sale on 2026-02-19, filed 4 days after the tradedirector Welch John R. — Sale on 2026-02-19, filed 1 day after the tradeofficer GERSTENBERG ERIC W — Sale on 2025-12-16, filed 1 day after the trade
DatePersonRoleActionShares @ priceValueOwnership Δvs S&P 1mvs S&P 6mOwned afterFiling
2026-08-14GERSTENBERG ERIC WofficerSale2,500 @ $321.34$803K−4.2% of holding+1.3%not yet — horizon still open56,793Form 4 · filed 4 days after the trade
2026-08-03Robertson AndreadirectorSale789 @ $314.01$248K−8.1% of holding+0.8%not yet — horizon still open8,979Form 4 · filed same day
2026-05-26States LaurendirectorSale789 @ $286.19$226K−6.5% of holding+6.4%not yet — horizon still open11,359Form 4 · filed 1 day after the trade
2026-03-18GERSTENBERG ERIC WofficerSale1,000 @ $293.00$293K−2.5% of holding−4.3%not yet — horizon still open38,877Form 4 · filed 1 day after the trade
2026-03-18Reed Marcy L.directorSale836 @ $287.94$241K−14.1% of holding−4.3%not yet — horizon still open5,081Form 4 · filed 1 day after the trade
2026-03-17Weber Brian PofficerSale4,683 @ $293.39$1.4M−8.8% of holding−2.8%−3.2%48,728Form 4 · filed same day
2026-03-04MCKIM ALAN SdirectorSale100,000 @ $292.65$29.3M−4.6% of holding+5.4%−4.7%2,065,368Form 4 · filed 1 day after the trade
2026-02-23GERSTENBERG ERIC WofficerSale2,500 @ $279.86$700K−5.5% of holding+5.6%−0.8%43,020Form 4 · filed 1 day after the trade
2026-02-20Gabriel Sharon M.officerSale3,540 @ $282.07$999K−13.2% of holding+5.2%−0.7%23,193Form 4 · filed same day
2026-02-20Dugas Eric J.officerSale2,788 @ $281.31$784K−14.9% of holding+5.2%−0.7%15,933Form 4 · filed same day
2026-02-19MCKIM ALAN SdirectorSale100,000 @ $281.14$28.1M−4.2% of holding+3.0%+2.4%2,275,368Form 4 · filed 4 days after the trade
2026-02-19Welch John R.directorSale750 @ $273.07$205K−6.8% of holding+3.0%+2.4%10,237Form 4 · filed 1 day after the trade
2025-12-16GERSTENBERG ERIC WofficerSale601 @ $240.90$145K−1.2% of holding+7.8%+9.3%50,454Form 4 · filed 1 day after the trade
2025-08-01Battles Michael LouisdirectorPurchase2,000 @ $233.50$467K+2.5% of holding−0.1%−0.9%82,911Form 4 · filed 3 days after the trade
2025-07-31Robertson AndreadirectorSale836 @ $233.64$195K−7.8% of holding+0.7%+0.1%9,888Form 4 · filed 4 days after the trade
2025-06-13Weber Brian PofficerSale3,035 @ $227.17$689K−5.3% of holding−4.4%−8.2%54,548Form 4 · filed 3 days after the trade
2025-06-06GERSTENBERG ERIC WofficerSale8,076 @ $225.23$1.8M−13.5% of holding−2.5%−10.1%51,619Form 4 · filed 3 days after the trade
2025-06-05MCKIM ALAN SdirectorSale58,156 @ $223.80$13.0M−2.5% of holding−1.6%−10.9%2,297,896Form 4 · filed 1 day after the trade
2025-06-05Quirk Alison A.directorSale893 @ $223.69$200K−23.1% of holding−1.6%−10.9%2,978Form 4 · filed 1 day after the trade
2025-06-04MCKIM ALAN SdirectorSale41,844 @ $225.40$9.4M−1.7% of holding+0.3%−9.7%2,356,052Form 4 · filed 2 days after the trade
2025-05-28Welch John R.directorSale1,250 @ $228.51$286K−9.9% of holding−3.1%−16.8%11,402Form 4 · filed 1 day after the trade
2025-05-27Speights RobertofficerSale1,022 @ $228.49$234K−5.9% of holding−3.3%−19.9%16,310Form 4 · filed 1 day after the trade
2025-05-22States LaurendirectorSale836 @ $226.17$189K−6.6% of holding−2.2%−20.7%11,871Form 4 · filed 1 day after the trade
2025-03-10Speights RobertofficerSale2,725 @ $190.44$519K−6.4% of holding+8.0%+9.0%40,008Form 4 · filed 1 day after the trade
2025-03-10Dugas Eric J.officerPurchase1,050 @ $191.38$201K+4.5% of holding+8.0%+9.0%24,238Form 4 · filed 1 day after the trade
2025-03-03MCKIM ALAN SdirectorSale50,000 @ $210.18$10.5M−2.0% of holding+0.3%+5.6%2,422,011Form 4 · filed 1 day after the trade
2025-03-03MCKIM ALAN SdirectorSale2,999 @ $212.02$636K−0.1% of holding+0.3%+5.6%2,397,896Form 4 · filed 1 day after the trade
2025-02-18States LaurendirectorSale308 @ $228.79$70K−2.5% of holding−6.0%+2.8%11,918Form 4 · filed 1 day after the trade
2025-01-15States LaurendirectorSale308 @ $239.04$74K−2.5% of holding−5.9%−10.4%12,226Form 4 · filed 1 day after the trade
2024-12-16States LaurendirectorSale308 @ $245.06$75K−2.4% of holding−1.4%−7.5%12,534Form 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.

146 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
2026-07-17MCKIM ALAN SdirectorWithheld for tax1,26530,154Form 4
2026-07-01CURTIS GEORGE LofficerWithheld for tax1,75744,291Form 4
2026-07-01MCKIM ALAN SdirectorWithheld for tax1,34331,419Form 4
2026-07-01Battles Michael LouisdirectorWithheld for tax1,03294,355Form 4
2026-07-01Weber Brian PofficerWithheld for tax81447,914Form 4
2026-07-01GERSTENBERG ERIC WofficerWithheld for tax56438,313Form 4
2026-07-01Dugas Eric J.officerWithheld for tax44713,532Form 4
2026-07-01Gabriel Sharon M.officerWithheld for tax35920,706Form 4
2026-07-01Underwood RebeccaofficerWithheld for tax31118,373Form 4
2026-07-01Geer Charles H. IIofficerWithheld for tax4010,799Form 4
2026-06-01Diderich JeroenofficerWithheld for tax1,71716,152Form 4
2026-05-20Polito KaryndirectorAward / grant6524,127Form 4
2026-05-20States LaurendirectorAward / grant65212,148Form 4
2026-05-20Stewart Shelley JRdirectorAward / grant6524,523Form 4
2026-05-20Willett RobertdirectorAward / grant65210,028Form 4
2026-05-20Reed Marcy L.directorAward / grant6525,733Form 4
2026-05-20PRESTON JOHN TdirectorAward / grant6527,044Form 4
2026-05-20Robertson AndreadirectorAward / grant6529,768Form 4
2026-05-20Quirk Alison A.directorAward / grant6523,630Form 4
2026-05-20Welch John R.directorAward / grant65210,889Form 4
2026-05-20GALANTE EDWARD GdirectorAward / grant65225,461Form 4
2026-05-11Polito KaryndirectorAward / grant4603,475Form 4
2026-05-11Robertson AndreadirectorGift3429,116Form 4
2026-03-13MCKIM ALAN SdirectorWithheld for tax1,26532,762Form 4
2026-03-13Battles Michael LouisdirectorWithheld for tax1,14897,538Form 4
2026-03-13GERSTENBERG ERIC WofficerWithheld for tax97742,043Form 4
2026-03-13Weber Brian PofficerWithheld for tax96055,280Form 4
2026-03-13Gabriel Sharon M.officerWithheld for tax72722,466Form 4
2026-03-13Dugas Eric J.officerWithheld for tax63015,303Form 4
2026-03-13CURTIS GEORGE LofficerWithheld for tax35047,065Form 4
2026-03-13Underwood RebeccaofficerWithheld for tax12520,085Form 4
2026-03-13Harrison Robert W.officerWithheld for tax187,016Form 4
2026-03-13CURTIS GEORGE LofficerDisposition1,02846,048Form 4
2026-03-13GERSTENBERG ERIC WofficerDisposition2,16639,877Form 4
2026-03-13Weber Brian PofficerDisposition1,86953,411Form 4
2026-03-13Geer Charles H. IIofficerDisposition13910,839Form 4
2026-03-13Underwood RebeccaofficerDisposition1,40118,684Form 4
2026-03-13Battles Michael LouisdirectorDisposition2,16695,387Form 4
2026-03-13Dugas Eric J.officerDisposition1,32413,979Form 4
2026-03-13Harrison Robert W.officerDisposition3686,648Form 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.