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Insider Trading Intelligence
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Alan S. Mckim

CLH
EXEC CHAIR, CTO. · CLEAN HARBORS INC · CIK 0001024547
FILING MIX · LIFETIME4%/96%
BUYS
3
SELLS
67
TOTAL VALUE
$167.66M
COMPANIES
1
ACTIVE SINCE
Mar 2020
HOLDINGS NOW
32,762
AVG SELL PX
$179.16
TRADE KIND
SHOWING 70 / 70
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
27 backtested trades · 8 horizons · 10 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Alan S. Mckim, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d27+51.85%-0.81%+0.46%-1.27%-1.20%
14d27+51.85%-0.93%+0.84%-1.77%-0.86%
30d27+40.74%+0.69%+0.80%-0.11%+1.80%
60d27+29.63%+3.88%+2.91%+0.97%+3.55%
90d27+14.81%+8.52%+4.64%+4.36%+3.56%
180d27(2 pending)+16.00%+16.78%+9.13%+7.65%+8.81%
1y27(2 pending)+0.00%+35.13%+17.67%+17.87%+22.57%
2y27(6 pending)+0.00%+62.29%+30.60%+31.69%+43.54%
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
CLH · 32,762 shares · as of Mar 13, 2026
0907,3721,814,7452,722,1173,629,489202120222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2020
2020
2020
2020
2021
2021
2021
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
FLOW · 3 buys / 67 sellsCOVERAGE · 25 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
CLH
CLEAN HARBORS INC
SALE
EXEC CHAIR, CTO.
1,265$288.93$365.5K32,762Mar 13, 2026Mar 17, 2026View →
CLH
CLEAN HARBORS INC
SALE
EXEC CHAIR, CTO.
100,000$292.65$29.27M2,065,368Mar 4, 2026Mar 5, 2026View →
CLH
CLEAN HARBORS INC
SALE
EXEC CHAIR, CTO.
100,000$281.14$28.11M2,275,368Feb 19, 2026Feb 23, 2026View →
CLH
CLEAN HARBORS INC
SALEGRANT
Gift
10,0002,265,368Feb 19, 2026Feb 23, 2026View →
CLH
CLEAN HARBORS INC
SALEGRANT
Gift
4,2832,342,461Sep 16, 2025Sep 17, 2025View →
CLH
CLEAN HARBORS INC
SALEGRANT
Gift
8,5672,346,744Sep 16, 2025Sep 17, 2025View →
CLH
CLEAN HARBORS INC
SALE
EXEC CHAIR, CTO.
1,342$229.55$308.1K34,027Jul 1, 2025Jul 3, 2025View →
CLH
CLEAN HARBORS INC
SALE
EXEC CHAIR, CTO.
58,156$223.80$13.02M2,297,896Jun 5, 2025Jun 6, 2025View →
CLH
CLEAN HARBORS INC
SALE
EXEC CHAIR, CTO.
41,844$225.40$9.43M2,356,052Jun 4, 2025Jun 6, 2025View →
CLH
CLEAN HARBORS INC
SALE
EXEC CHAIR, CTO.
1,265$192.90$244.0K35,369Mar 17, 2025Mar 18, 2025View →
CLH
CLEAN HARBORS INC
SALEGRANT
Gift
28,0730Mar 3, 2025Mar 4, 2025View →
CLH
CLEAN HARBORS INC
SALE
EXEC CHAIR, CTO.
2,999$212.02$635.8K2,397,896Mar 3, 2025Mar 4, 2025View →
CLH
CLEAN HARBORS INC
SALE
EXEC CHAIR, CTO.
50,000$210.18$10.51M2,422,011Mar 3, 2025Mar 4, 2025View →
CLH
CLEAN HARBORS INC
SALEGRANT
Gift
15,0002,472,011Nov 18, 2024Nov 19, 2024View →
CLH
CLEAN HARBORS INC
SALEGRANT
Gift
7,2002,487,011Nov 15, 2024Nov 19, 2024View →
CLH
CLEAN HARBORS INC
SALE
EXEC CHAIR, CTO.
1,343$220.63$296.3K36,634Jul 1, 2024Jul 3, 2024View →
CLH
CLEAN HARBORS INC
SALE
EXEC CHAIR, CTO.
50,000$215.51$10.78M2,494,211Jun 11, 2024Jun 13, 2024View →
CLH
CLEAN HARBORS INC
SALEGRANT
Gift
28,0002,544,211Mar 18, 2024Mar 19, 2024View →
CLH
CLEAN HARBORS INC
SALE
EXEC CHAIR, CTO.
1,265$187.84$237.6K37,977Mar 15, 2024Mar 19, 2024View →
CLH
CLEAN HARBORS INC
SALE
EXEC CHAIR, CTO.
35,000$182.22$6.38M2,690,852Feb 27, 2024Feb 28, 2024View →
CLH
CLEAN HARBORS INC
SALEGRANT
Gift
55,5250Feb 26, 2024Feb 28, 2024View →
CLH
CLEAN HARBORS INC
SALE
EXEC CHAIR, CTO.
35,000$184.06$6.44M2,725,852Feb 26, 2024Feb 28, 2024View →
CLH
CLEAN HARBORS INC
SALEGRANT
Gift
20,0002,670,852Feb 26, 2024Feb 28, 2024View →
CLH
CLEAN HARBORS INC
SALEGRANT
Gift
10,0002,660,852Feb 26, 2024Feb 28, 2024View →
CLH
CLEAN HARBORS INC
SALE
EXEC CHAIR, CTO.
17,453$178.37$3.11M2,672,211Dec 20, 2023Dec 22, 2023View →
CLH
CLEAN HARBORS INC
SALE
EXEC CHAIR, CTO.
46,611$164.60$7.67M2,689,664Nov 17, 2023Nov 20, 2023View →
CLH
CLEAN HARBORS INC
SALE
EXEC CHAIR, CTO.
28,389$164.50$4.67M2,736,275Nov 16, 2023Nov 20, 2023View →
CLH
CLEAN HARBORS INC
SALEGRANT
Gift
10,0002,805,137Jun 8, 2023Jun 12, 2023View →
CLH
CLEAN HARBORS INC
SALE
EXEC CHAIR, CTO.
53,800$139.02$7.48M2,815,137May 16, 2023May 17, 2023View →
CLH
CLEAN HARBORS INC
SALE
EXEC CHAIR, CTO.
16,200$139.60$2.26M2,868,937May 15, 2023May 17, 2023View →
CLH
CLEAN HARBORS INC
SALEGRANT
Gift
10,0002,885,137May 11, 2023May 12, 2023View →
CLH
CLEAN HARBORS INC
SALEGRANT
Gift
90,0002,895,137Mar 22, 2023Mar 24, 2023View →
CLH
CLEAN HARBORS INC
SALE
CHRMN.OF BD, PRES. & CEO
1,161$133.07$154.5K2,985,137Mar 15, 2023Mar 17, 2023View →
CLH
CLEAN HARBORS INC
SALEGRANT
Gift
49,1560Mar 3, 2023Mar 6, 2023View →
CLH
CLEAN HARBORS INC
SALE
CHRMN.OF BD, PRES. & CEO
2,811$116.50$327.5K2,986,298Dec 15, 2022Dec 19, 2022View →
CLH
CLEAN HARBORS INC
SALE
CHRMN.OF BD, PRES. & CEO
40,000$120.45$4.82M3,089,109Nov 28, 2022Nov 29, 2022View →
CLH
CLEAN HARBORS INC
SALEGRANT
Gift
100,0002,989,109Nov 28, 2022Nov 29, 2022View →
CLH
CLEAN HARBORS INC
SALEGRANT
Gift
10,0003,129,109Aug 15, 2022Aug 16, 2022View →
CLH
CLEAN HARBORS INC
SALE
CHRMN.OF BD, PRES. & CEO
1,232$90.32$111.3K3,139,109Jul 1, 2022Jul 5, 2022View →
CLH
CLEAN HARBORS INC
SALEGRANT
Gift
58,1970Jun 27, 2022Jun 29, 2022View →
CLH
CLEAN HARBORS INC
SALEGRANT
Gift
4,3550Mar 30, 2022Mar 31, 2022View →
CLH
CLEAN HARBORS INC
SALE
Chrmn.of Bd, Pres. & CEO
20,176$109.04$2.20M3,106,031Mar 18, 2022Mar 21, 2022View →
CLH
CLEAN HARBORS INC
SALE
Chrmn.of Bd, Pres. & CEO
30,000$109.51$3.29M3,126,207Mar 17, 2022Mar 21, 2022View →
CLH
CLEAN HARBORS INC
PURCHASEGRANT
Stock grant
13,0793,055,497Feb 7, 2022Feb 9, 2022View →
CLH
CLEAN HARBORS INC
SALEGRANT
Gift
25,0003,140,844Jan 3, 2022Jan 3, 2022View →
CLH
CLEAN HARBORS INC
SALEGRANT
Gift
20,5003,176,844Jan 3, 2022Jan 3, 2022View →
CLH
CLEAN HARBORS INC
SALEGRANT
Gift
11,0003,165,844Jan 3, 2022Jan 3, 2022View →
CLH
CLEAN HARBORS INC
SALE
Chrmn.of Bd, Pres. & CEO
9,870$98.73$974.5K3,197,344Dec 15, 2021Dec 16, 2021View →
CLH
CLEAN HARBORS INC
SALE
Chrmn.of Bd, Pres. & CEO
1,152$102.42$118.0K3,207,214Sep 1, 2021Sep 1, 2021View →
CLH
CLEAN HARBORS INC
SALE
Chrmn.of Bd, Pres. & CEO
16,800$102.58$1.72M3,208,366Aug 31, 2021Sep 1, 2021View →
CLH
CLEAN HARBORS INC
SALE
Chrmn.of Bd, Pres. & CEO
12,048$102.68$1.24M3,225,166Aug 30, 2021Sep 1, 2021View →
CLH
CLEAN HARBORS INC
SALE
Chrmn.of Bd, Pres. & CEO
25,000$101.76$2.54M3,237,214Aug 25, 2021Aug 26, 2021View →
CLH
CLEAN HARBORS INC
PURCHASEGRANT
Stock grant
13,8783,262,214Jul 1, 2021Jul 6, 2021View →
CLH
CLEAN HARBORS INC
SALE
Chrmn.of Bd, Pres. & CEO
8,078$89.50$723.0K3,248,336Mar 15, 2021Mar 17, 2021View →
CLH
CLEAN HARBORS INC
SALEGRANT
Gift
58,9860Mar 1, 2021Mar 5, 2021View →
CLH
CLEAN HARBORS INC
SALE
Chrmn.of Bd, Pres. & CEO
1,793$72.99$130.9K3,256,414Dec 15, 2020Dec 17, 2020View →
CLH
CLEAN HARBORS INC
SALEGRANT
Gift
40,0003,258,207Dec 14, 2020Dec 15, 2020View →
CLH
CLEAN HARBORS INC
SALE
Chrmn.of Bd, Pres. & CEO
19,739$70.86$1.40M3,298,207Nov 13, 2020Nov 17, 2020View →
CLH
CLEAN HARBORS INC
SALE
Chrmn.of Bd, Pres. & CEO
15,096$63.90$964.6K3,317,946Aug 13, 2020Aug 14, 2020View →
CLH
CLEAN HARBORS INC
SALE
Chrmn.of Bd, Pres. & CEO
16,200$64.72$1.05M3,333,042Aug 12, 2020Aug 14, 2020View →
CLH
CLEAN HARBORS INC
SALE
Chrmn.of Bd, Pres. & CEO
41,300$65.23$2.69M3,349,242Aug 11, 2020Aug 12, 2020View →
CLH
CLEAN HARBORS INC
SALE
Chrmn.of Bd, Pres. & CEO
27,404$65.36$1.79M3,390,542Aug 10, 2020Aug 12, 2020View →
CLH
CLEAN HARBORS INC
PURCHASEGRANT
Stock grant
24,1183,417,946Jul 1, 2020Jul 2, 2020View →
CLH
CLEAN HARBORS INC
SALEGRANT
Gift
16,6503,553,828Jun 3, 2020Jun 4, 2020View →
CLH
CLEAN HARBORS INC
SALEGRANT
Gift
55,0003,570,478Apr 29, 2020May 1, 2020View →
CLH
CLEAN HARBORS INC
SALE
Chrmn.of Bd, Pres. & CEO
2,218$45.91$101.8K3,625,478Apr 1, 2020Apr 3, 2020View →
CLH
CLEAN HARBORS INC
SALE
Chrmn.of Bd, Pres. & CEO
1,793$54.33$97.4K3,627,696Mar 15, 2020Mar 16, 2020View →
CLH
CLEAN HARBORS INC
SALEGRANT
Gift
15,0003,629,489Mar 10, 2020Mar 11, 2020View →
CLH
CLEAN HARBORS INC
SALEGRANT
Gift
40,9410Mar 5, 2020Mar 9, 2020View →
CLH
CLEAN HARBORS INC
SALEGRANT
Gift
58,9860Mar 1, 2020Mar 3, 2021View →
Other insiders · CLH
Loading peer insiders…
About this filer
CIK 0001024547
ROLE
EXEC CHAIR, CTO.
PRIMARY
CLH
COMPANIES
1
ACTIVE SINCE
Mar 2020
MARKETPEEL · /INSIDER/0001024547DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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