CLH Clean Harbors (CLH) Insider Trading, Ownership & Congress Trades
Utilities · Hazardous waste management · CIK 0000822818
Congress · 1Form 144 · 2
Funds added, last quarter
306
13F, latest reported quarter
What the filings say about CLH
Insiders, 180 days
-$1.1M net sold
1 buyer · 3 sellers · 0% of sales under a 10b5-1 plan
Congress, 1 year
1 bought · 1 sold
Latest: sale, 2026-08-25
Planned sales (Form 144), 90 days
$1.1M
2 notices
Clean Harbors insider trades (Form 4)
Form 4 buys and sells (codes P and S). Grants, option exercises
and conversions excluded.
Over the last 180 days, CLEAN HARBORS INC insiders sold a net $1.1M of stock across 120 Form 4 purchases and sales, with 1 insider buying. Source: SEC Form 4 filings, as of 2026-10-28.
Insider
Filed
Shares
Value
Since filing
Context
- 12 earlier Form 4 trades (code P or S) here by this insider (12 sales), the last on Mar 18, 2026.
- The trade is 4.4% of the 56,793 shares held after it.
- 1 other insider sold within 30 days.
- 306 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: CO-CEO GERSTENBERG ERIC W sold about $803.4K of CLH on Aug 14, 2026; 1 other insider sold within 30 days and 306 funds added in the latest 13F quarter.Context
- 6 earlier Form 4 trades (code P or S) here by this insider (6 sales), the last on Jul 31, 2025.
- The trade is 8.8% of the 8,979 shares held after it.
- 1 other insider sold within 30 days.
- 306 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Director Robertson Andrea sold about $247.8K of CLH on Aug 3, 2026; 1 other insider sold within 30 days and 306 funds added in the latest 13F quarter.Context
- 10 earlier Form 4 trades (code P or S) here by this insider (10 sales), the last on May 22, 2025.
- The trade is 6.9% of the 11,359 shares held after it.
- No other insider sold within 30 days.
- 306 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Director States Lauren sold about $225.8K of CLH on May 26, 2026; 306 funds added in the latest 13F quarter.Context
- First Form 4 purchase or sale (code P or S) here by this insider on our record.
- The trade is 13.2% of the 3,475 shares held after it.
- No other insider bought within 30 days.
- 306 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Director Polito Karyn bought about $135.8K of CLH on May 11, 2026; 306 funds added in the latest 13F quarter.Context
- First Form 4 purchase or sale (code P or S) here by this insider on our record.
- The trade is 16.5% of the 5,081 shares held after it.
- 6 other insiders sold within 30 days.
- 306 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Director Reed Marcy L. sold about $240.7K of CLH on Mar 18, 2026; 6 other insiders sold within 30 days and 306 funds added in the latest 13F quarter.120 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.
Seven facts, ranked against the sector ·
Rank is not a forecast
Insiders
net -$1.1M over 180 days
-$1.1M over 90 days
below 75% of Utilities
Congress
1 member bought in the last year
the lowest in Utilities
Funds
306 funds bought in last quarter
more than 64% of Utilities
Revenue
+2.4% year over year
below 71% of Utilities
Margin
6.5% net margin
below 72% of Utilities
Buybacks
$25.0M repurchased, FY to 2026-03-31
below 53% of Utilities
Short interest
2.2% of the float short (float per yahoo 2026-10-26) · 2.6 days to cover · settled 2026-09-30
below 64% of Utilities
What changed in the last 30 days
Nothing new filed in the last 30 days
Watch CLH
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.
+30.2%12M
Insider buyInsider sellForm 144 (planned sale)
Indexed to 100, dividend-adjusted, not a price chart.
When a name files heavily, the largest trades are drawn first.
Who owns CLH: institutional holders (13F)
13F holdings, latest reported quarter
5,076,220 sh
$1.5B
3,155,233 sh
$942.6M
3,002,654 sh
$897.0M
2,182,972 sh
$652.2M
1,983,336 sh
$592.5M
Congress trades in CLH
STOCK Act disclosures, US House only, filed up to 45 days after the trade
Sold 2026-08-25 · disclosed 15 days later
$50,001 - $100,000
Sold 2026-07-28 · disclosed 6 days later
$1,001 - $15,000
Sold 2026-07-27 · disclosed 7 days later
$1,001 - $15,000
Sold 2026-07-24 · disclosed 10 days later
$1,001 - $15,000
Sold 2026-05-01 · disclosed 35 days later
$1,001 - $15,000
Activist and 5% holders (13D/13G)
No 5%+ ownership filings
Nobody has filed for crossing 5%. That is a fact, not missing data.
CLH planned insider sales (Form 144)
Notice of intent to sell, filed before any sale
GERSTENBERG ERIC W
Filed 2026-08-14
$805.0K
ANDREA ROBERTSON
Filed 2026-08-03
$247.8K
CLH mutual fund holders (N-PORT)
Funds ranked by the share of their own portfolio in this stock (N-PORT).
Saratoga Large Capitalization Value Portfolio
$813.6K position · as of 2026-05-31
5.4%
M.D. Sass Concentrated Value ETF
$4.1M position · as of 2026-05-31
5.3%
DAVENPORT EQUITY OPPORTUNITIES FUND
$38.0M position · as of 2026-06-30
4.8%
VanEck Environmental Services ETF
$4.5M position · as of 2026-06-30
4.4%
Transamerica Mid Cap Growth
$5.7M position · as of 2026-07-31
4.2%
GMO Domestic Resilience ETF
$1.3M position · as of 2026-05-31
3.6%
SEC N-PORT, monthly, about 60 days late · funds ≥ $10M ·
% is the share of the fund's own portfolio
Government contracts
Award ceilings over the contract's life, subsidiaries included.
Not annual revenue (USASpending.gov).
Department Of Homeland Security
UCGPS25022 - PROVIDE LABOR, MATERIALS AND EQUIPMENT TO MITIGATE THE HARMFUL EFFECTS OF AN OIL SPILL · 2025-09-24
$8.3M
Federal awards ≥ $25M in the last 90 days, matched via the SAM.gov parent registry
Executive pay vs shareholder return · Alan S.Mc Kim
CEO pay, headline and as actually paid, against the company's
return and its chosen peers' (DEF 14A).
FY
CEO total
Actually paid
Other execs, avg
TSR
Peer TSR
2022
$6.2M
$6.8M
$2.8M
+50%
+14%
2021
$5.6M
$6.6M
$2.9M
+31%
+30%
2020
$3.8M
n/a
$2.3M
-11%
+17%
Tagged by the company under SEC Item 402(v). Returns are
cumulative from the start of the disclosure period. Green where the company beat its own peer group.
Live price
Daily candles from TradingView, under their licence. No filings marked.
Why this name is on the desk
Insiders have filed to sell, before selling.
The record shows a net $1.1M sold by insiders over 180 days, 306 funds added last quarter, 1 House member(s) bought in 12 months, disclosed weeks after the trade, $1.1M in planned Form 144 sales. Each figure is a federal filing, dated the day it went public.
CLH financials
Revenue growth
+2.4%
XBRL, annual
Net margin
6.5%
Ratios from the company's XBRL filings, latest filings
Revenue, TTM
$6.1B
four quarters, 2025-04-01 to 2026-03-31
Revenue, TTM CLH
| FY Dec 2025 | $6.0B |
| FY Dec 2024 | $5.9B |
| FY Dec 2023 | $5.4B |
| FY Dec 2022 | $5.2B |
| FY Dec 2021 | $3.8B |
| Mar 2026 | $1.5B |
| Dec 2025 | $1.5B |
| Sep 2025 | $1.5B |
| Jun 2025 | $1.5B |
| Mar 2025 | $1.4B |
| Dec 2024 | $1.4B |
| Sep 2024 | $1.5B |
| Jun 2024 | $1.6B |
At each fiscal year end
Single quarter
Net margin, TTM
+6.5%
net income over revenue, 2025-04-01 to 2026-03-31
Net margin, TTM CLH
| FY Dec 2025 | +6.5% |
| FY Dec 2024 | +6.8% |
| FY Dec 2023 | +7.0% |
| FY Dec 2022 | +8.0% |
| FY Dec 2021 | +5.3% |
| Mar 2026 | +4.3% |
| Dec 2025 | +5.8% |
| Sep 2025 | +7.7% |
| Jun 2025 | +8.2% |
| Mar 2025 | +4.1% |
| Dec 2024 | +5.9% |
| Sep 2024 | +7.5% |
| Jun 2024 | +8.6% |
At each fiscal year end
Single quarter
Free cash flow, TTM
$466.8M
operating cash flow minus capex, 2025-04-01 to 2026-03-31
Free cash flow, TTM CLH
| FY Dec 2025 | $441.8M |
| FY Dec 2024 | $345.5M |
| FY Dec 2023 | $312.3M |
| FY Dec 2022 | $281.2M |
| FY Dec 2021 | $304.1M |
| Mar 2026 | -$92.1M |
| Dec 2025 | $233.3M |
| Sep 2025 | $207.5M |
| Jun 2025 | $118.0M |
| Mar 2025 | -$117.1M |
| Dec 2024 | $241.5M |
| Sep 2024 | $142.4M |
| Jun 2024 | $80.9M |
At each fiscal year end
Single quarter
Debt to equity
1.00x
long-term 2026-03-31 plus current 2026-03-31; equity 2026-03-31
Debt to equity CLH
| FY Dec 2025 | 1.01x |
| FY Dec 2024 | 1.08x |
| FY Dec 2023 | 1.02x |
| FY Dec 2022 | 1.26x |
| FY Dec 2021 | 1.67x |
| Mar 2026 | 1.00x |
| Dec 2025 | 1.01x |
| Sep 2025 | 1.00x |
| Jun 2025 | 1.02x |
| Mar 2025 | 1.08x |
| Dec 2024 | 1.08x |
| Sep 2024 | 1.10x |
| Jun 2024 | 1.14x |
At each fiscal year end
Trailing four quarters at each quarter end
Cash flow to debt
0.31x
TTM operating cash flow over long-term 2026-03-31 plus current 2026-03-31
Cash flow to debt CLH
| FY Dec 2025 | 0.31x |
| FY Dec 2024 | 0.28x |
| FY Dec 2023 | 0.32x |
| FY Dec 2022 | 0.26x |
| FY Dec 2021 | 0.22x |
| Mar 2026 | 0.31x |
| Dec 2025 | 0.31x |
| Sep 2025 | 0.29x |
| Jun 2025 | 0.27x |
| Mar 2025 | 0.27x |
| Dec 2024 | 0.28x |
| Sep 2024 | 0.27x |
| Jun 2024 | 0.26x |
At each fiscal year end
Trailing four quarters at each quarter end
Return on equity
+14.8%
TTM net income over average of 2025-03-31 and 2026-03-31
Return on equity CLH
| FY Dec 2025 | +14.7% |
| FY Dec 2024 | +16.7% |
| FY Dec 2023 | +18.1% |
| FY Dec 2022 | +24.0% |
| FY Dec 2021 | +14.2% |
| Mar 2026 | +14.8% |
| Dec 2025 | +14.7% |
| Sep 2025 | +14.6% |
| Jun 2025 | +14.9% |
| Mar 2025 | +16.0% |
| Dec 2024 | +16.7% |
| Sep 2024 | +17.7% |
| Jun 2024 | +17.3% |
At each fiscal year end
Trailing four quarters at each quarter end
Return on assets
+5.3%
TTM net income over average of 2025-03-31 and 2026-03-31
Return on assets CLH
| FY Dec 2025 | +5.2% |
| FY Dec 2024 | +5.8% |
| FY Dec 2023 | +6.0% |
| FY Dec 2022 | +7.0% |
| FY Dec 2021 | +4.2% |
| Mar 2026 | +5.3% |
| Dec 2025 | +5.2% |
| Sep 2025 | +5.2% |
| Jun 2025 | +5.3% |
| Mar 2025 | +5.5% |
| Dec 2024 | +5.8% |
| Sep 2024 | +6.1% |
| Jun 2024 | +5.9% |
At each fiscal year end
Trailing four quarters at each quarter end
Return on invested capital
+10.1%
operating income after a 26.4% effective tax rate, over long-term 2026-03-31 plus current 2026-03-31 plus average of 2025-03-31 and 2026-03-31 minus cash
Return on invested capital CLH
| FY Dec 2025 | +10.1% |
| FY Dec 2024 | +10.7% |
| FY Dec 2023 | +11.8% |
| FY Dec 2022 | +13.2% |
| FY Dec 2021 | +7.5% |
| Mar 2026 | +10.1% |
| Dec 2025 | +10.1% |
| Sep 2025 | +10.0% |
| Jun 2025 | +10.1% |
| Mar 2025 | +10.6% |
| Dec 2024 | +10.7% |
| Sep 2024 | +11.0% |
| Jun 2024 | +10.5% |
At each fiscal year end
Trailing four quarters at each quarter end
Return on capital employed
+10.7%
operating income (EBIT proxy) over average of 2025-03-31 and 2026-03-31 minus current liabilities
Return on capital employed CLH
| FY Dec 2025 | +10.6% |
| FY Dec 2024 | +11.5% |
| FY Dec 2023 | +11.7% |
| FY Dec 2022 | +12.9% |
| FY Dec 2021 | +8.5% |
| Mar 2026 | +10.7% |
| Dec 2025 | +10.6% |
| Sep 2025 | +10.3% |
| Jun 2025 | +10.4% |
| Mar 2025 | +10.8% |
| Dec 2024 | +11.5% |
| Sep 2024 | +11.9% |
| Jun 2024 | +11.4% |
At each fiscal year end
Trailing four quarters at each quarter end
P/E, trailing
42.91x
close 2026-10-26 over four quarters of diluted EPS, 2025-04-01 to 2026-03-31
P/E, trailing CLH
| FY Dec 2025 | 32.16x |
| FY Dec 2024 | 31.02x |
| FY Dec 2023 | 25.11x |
| FY Dec 2022 | 15.10x |
| FY Dec 2021 | 26.89x |
| Mar 2026 | 38.80x |
| Dec 2025 | 32.16x |
| Sep 2025 | 32.21x |
| Jun 2025 | 32.47x |
| Mar 2025 | 27.30x |
| Dec 2024 | 31.02x |
| Sep 2024 | 31.47x |
| Jun 2024 | 31.24x |
At each fiscal year end
Trailing four quarters at each quarter end
Enterprise value
$19.1B
market value at close 2026-10-26 on 2026-05-01 shares, plus long-term 2026-03-31 plus current 2026-03-31, minus cash 2020-09-30
Enterprise value CLH
| FY Dec 2025 | $14.8B |
| FY Dec 2024 | $14.7B |
| FY Dec 2023 | $11.3B |
| FY Dec 2022 | $8.1B |
| FY Dec 2021 | $7.5B |
| Mar 2026 | $17.5B |
| Dec 2025 | $14.8B |
| Sep 2025 | $14.8B |
| Jun 2025 | $14.7B |
| Mar 2025 | $12.9B |
| Dec 2024 | $14.7B |
| Sep 2024 | $15.4B |
| Jun 2024 | $14.5B |
At each fiscal year end
Trailing four quarters at each quarter end
FCF yield
+2.8%
TTM free cash flow over market value at close 2026-10-26
FCF yield CLH
| FY Dec 2025 | +3.5% |
| FY Dec 2024 | +2.8% |
| FY Dec 2023 | +3.3% |
| FY Dec 2022 | +4.6% |
| FY Dec 2021 | +5.6% |
| Mar 2026 | +3.1% |
| Dec 2025 | +3.5% |
| Sep 2025 | +3.6% |
| Jun 2025 | +3.1% |
| Mar 2025 | +3.3% |
| Dec 2024 | +2.8% |
| Sep 2024 | +2.1% |
| Jun 2024 | +2.0% |
At each fiscal year end
Trailing four quarters at each quarter end
PEG, trailing
18.22x
P/E over trailing EPS growth of 2%: four quarters to 2026-03-31 against the four to 2025-03-31
PEG, trailing CLH
| FY Dec 2025 | n/a |
| FY Dec 2024 | 4.59x |
| FY Dec 2023 | n/a |
| FY Dec 2022 | 0.15x |
| FY Dec 2021 | 0.51x |
| Mar 2026 | 16.48x |
| Dec 2025 | n/a |
| Sep 2025 | n/a |
| Jun 2025 | n/a |
| Mar 2025 | 6.09x |
| Dec 2024 | 4.59x |
| Sep 2024 | 2.05x |
| Jun 2024 | n/a |
At each fiscal year end
Trailing four quarters at each quarter end
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.
| 2025-12 | 2024-12 | 2023-12 | 2022-12 | |
|---|---|---|---|---|
| Revenue | $6.0B | $5.9B | $5.4B | $5.2B |
| Operating income | $673.4M | $670.2M | $612.4M | $634.7M |
| Net income | $391.0M | $402.3M | $377.9M | $411.7M |
| EPS (diluted) | 7.28 | 7.42 | 6.95 | 7.56 |
| Operating cash flow | $866.7M | $777.8M | $734.6M | $626.2M |
| Long-term debt | $2.8B | $2.8B | $2.3B | $2.4B |
| Buybacks | $250.0M | $55.2M | $51.2M | $50.2M |
SEC XBRL, fiscal years, as known on 2026-10-28
CLH Stock Sonar score 6/7 axes
Find similar shapesCompareCLH ranks highest on profitability (85th percentile) and financial health (79th), and lowest on growth (29th), among Utilities peers.
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
CLH filings, in plain words
Are Clean Harbors insiders buying or selling CLH?
In the 180 days to 2026-10-28, Clean Harbors insiders were net sellers, a net $1.1M: $135.8K of purchases and $1.3M of sales reported on Form 4, by 1 buyer and 3 sellers.
Have members of Congress traded CLH?
Yes. In the year to 2026-10-28, 1 House member disclosed buying CLH and 1 House member disclosed selling it; the latest on record is a sale by April McClain Delaney dated 2026-08-25.
Are there planned insider sales of CLH?
Yes. 2 Form 144 notices of planned insider sales were filed in the 90 days to 2026-10-28, covering $1.1M of stock; the latest, by GERSTENBERG ERIC W, was filed 2026-08-14.
Read the full summary
In the 180 days to 2026-10-28, Clean Harbors insiders were net sellers of CLH, a net $1.1M across purchases and sales reported on Form 4 by 1 buyer and 3 sellers. None of the 3 insider sales was flagged as made under a Rule 10b5-1 plan. In the year to 2026-10-28, 1 member of Congress disclosed buying CLH and 1 member disclosed selling it; the latest on record is a sale by April McClain Delaney dated 2026-08-25. Insiders filed 2 Form 144 notices of intent to sell in the 90 days to 2026-10-28, covering $1.1M of stock. 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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