Hazardous Waste Management
Standard Industrial Classification: SIC 4955
Industry Insider Sentiment Analysis
The Hazardous Waste Management sector (SIC 4955) acts as a critical barometer for broader economic health. Our real-time monitoring reveals 599 total transactions. Monitoring "cluster buying" is one of the most reliable leading indicators for future sector performance. By analyzing aggregate data across this specific Standard Industrial Classification, investors can filter out individual company volatility and identify high-conviction trends. When multiple directors and officers within the same industry move capital simultaneously, it often signals an upcoming sector-wide revaluation or a fundamental shift in supply chain dynamics that has yet to be recognized by the broader public market.
| Filing Date | Trade Date | Ticker | Company | Reporting Person | Relationship | Type | Price | Qty | Total, $ | Owned After |
|---|---|---|---|---|---|---|---|---|---|---|
| 2026-02-24 23:33 | 2026-02-23 | CLH | CLEAN HARBORS INC | GERSTENBERG ERIC W | Officer | SELL | $279.86 | 2,500 | $699,650 | 43,020 |
| 2026-02-23 21:51 | 2026-02-19 | CLH | CLEAN HARBORS INC | MCKIM ALAN S | Director, Officer | SELL | $281.14 | 100,000 | $28,114,000 | 2,275,368 |
| 2026-02-20 22:56 | 2026-02-20 | CLH | CLEAN HARBORS INC | Gabriel Sharon M. | Officer | SELL | $282.07 | 3,540 | $998,528 | 23,193 |
| 2026-02-20 22:55 | 2026-02-20 | CLH | CLEAN HARBORS INC | Dugas Eric J. | Officer | SELL | $281.31 | 2,788 | $784,292 | 15,933 |
| 2026-02-20 22:54 | 2026-02-19 | CLH | CLEAN HARBORS INC | Welch John R. | Director | SELL | $273.07 | 750 | $204,803 | 10,237 |
| 2025-12-17 16:21 | 2025-12-16 | CLH | CLEAN HARBORS INC | GERSTENBERG ERIC W | Officer | SELL | $240.90 | 601 | $144,781 | 50,454 |
| 2025-12-04 00:33 | 2025-12-01 | SKYQ | Sky Quarry Inc. | Sealock David | SELL | $0.41 | 40,500 | $16,463 | 275,072 | |
| 2025-11-28 19:41 | 2025-11-26 | SKYQ | Sky Quarry Inc. | Sealock David | SELL | $0.35 | 100,000 | $35,060 | 315,572 | |
| 2025-11-28 19:37 | 2025-11-25 | SKYQ | Sky Quarry Inc. | Sealock David | SELL | $0.37 | 100,000 | $36,520 | 415,572 | |
| 2025-11-08 00:08 | 2025-11-07 | SKYQ | Sky Quarry Inc. | Sealock David | SELL | $0.40 | 38,062 | $15,225 | 477,510 | |
| 2025-11-07 21:57 | 2025-11-05 | SKYQ | Sky Quarry Inc. | Sealock David | SELL | $0.41 | 20,405 | $8,284 | 515,572 | |
| 2025-11-04 01:41 | 2025-10-31 | SKYQ | Sky Quarry Inc. | Sealock David | SELL | $0.45 | 191,533 | $86,918 | 535,977 | |
| 2025-10-30 19:28 | 2025-10-28 | SKYQ | Sky Quarry Inc. | Sealock David | SELL | $0.49 | 100,000 | $48,800 | 727,510 | |
| 2025-10-23 18:53 | 2025-10-20 | SKYQ | Sky Quarry Inc. | Sealock David | SELL | $0.44 | 199,990 | $88,116 | 527,510 | |
| 2025-09-26 17:45 | 2025-09-23 | SKYQ | Sky Quarry Inc. | Sealock Valeria Vigas | SELL | $0.43 | 1,224,800 | $522,010 | 370,747 | |
| 2025-09-16 22:30 | 2025-09-16 | PESI | PERMA FIX ENVIRONMENTAL SERVICES INC | Duggan Kerry C | Director | SELL | $8.60 | 5,653 | $48,616 | 3,680 |
| 2025-09-12 23:06 | 2025-09-11 | PESI | PERMA FIX ENVIRONMENTAL SERVICES INC | Duff Mark | Director, Officer | BUY | $8.05 | 897 | $7,221 | 134,556 |
| 2025-09-12 20:02 | 2025-09-11 | PESI | PERMA FIX ENVIRONMENTAL SERVICES INC | Shelton Larry | Director | BUY | $8.58 | 1,000 | $8,575 | 189,880 |
| 2025-09-11 00:33 | 2025-09-08 | SKYQ | Sky Quarry Inc. | Delwo Darryl | SELL | $0.73 | 110,000 | $80,399 | 15,000 | |
| 2025-09-11 00:17 | 2025-09-08 | SKYQ | Sky Quarry Inc. | Delwo Sherrie | SELL | $0.65 | 81,473 | $53,275 | 0 | |
| 2025-09-11 00:10 | 2025-08-22 | SKYQ | Sky Quarry Inc. | Delwo Sherrie | SELL | $0.48 | 23 | $11 | 81,473 | |
| 2025-09-10 19:52 | 2025-09-09 | PESI | PERMA FIX ENVIRONMENTAL SERVICES INC | Shelton Larry | Director | BUY | $9.61 | 1,000 | $9,610 | 188,880 |
| 2025-09-06 00:31 | 2025-08-20 | SKYQ | Sky Quarry Inc. | Delwo Sherrie | SELL | $0.45 | 18,804 | $8,462 | 81,496 | |
| 2025-08-04 22:01 | 2025-07-31 | CLH | CLEAN HARBORS INC | Robertson Andrea | Director | SELL | $233.64 | 836 | $195,323 | 9,888 |
| 2025-08-04 21:59 | 2025-08-01 | CLH | CLEAN HARBORS INC | Battles Michael Louis | Director, Officer | BUY | $233.50 | 2,000 | $467,000 | 82,911 |
| 2025-06-16 16:07 | 2025-06-13 | CLH | CLEAN HARBORS INC | Weber Brian P | Officer | SELL | $227.17 | 3,035 | $689,461 | 54,548 |
| 2025-06-09 19:59 | 2025-06-06 | CLH | CLEAN HARBORS INC | GERSTENBERG ERIC W | Officer | SELL | $225.23 | 8,076 | $1,818,957 | 51,619 |
| 2025-06-06 18:57 | 2025-06-04 | CLH | CLEAN HARBORS INC | MCKIM ALAN S | Director, Officer | SELL | $224.47 | 100,000 | $22,446,950 | 2,297,896 |
| 2025-06-06 15:39 | 2025-06-05 | CLH | CLEAN HARBORS INC | Quirk Alison A. | Director | SELL | $223.69 | 893 | $199,755 | 2,978 |
| 2025-06-02 23:30 | 2025-05-30 | PESI | PERMA FIX ENVIRONMENTAL SERVICES INC | Duggan Kerry C | Director | SELL | $0.00 | 16,634 | $0 | 8,221 |
| 2025-05-29 15:42 | 2025-05-28 | CLH | CLEAN HARBORS INC | Welch John R. | Director | SELL | $228.51 | 1,250 | $285,638 | 11,402 |
| 2025-05-28 19:29 | 2025-05-27 | CLH | CLEAN HARBORS INC | Speights Robert | Officer | SELL | $228.49 | 1,022 | $233,517 | 16,310 |
| 2025-05-23 19:26 | 2025-05-22 | CLH | CLEAN HARBORS INC | States Lauren | Director | SELL | $226.17 | 836 | $189,078 | 11,871 |
| 2025-03-24 19:55 | 2025-03-21 | PESI | PERMA FIX ENVIRONMENTAL SERVICES INC | Naccarato Ben | Officer | BUY | $7.00 | 400 | $2,800 | 48,811 |
| 2025-03-24 16:42 | 2025-03-21 | PESI | PERMA FIX ENVIRONMENTAL SERVICES INC | Duff Mark | Director, Officer | BUY | $7.03 | 2,050 | $14,417 | 133,659 |
| 2025-03-20 01:14 | 2025-03-18 | PESI | PERMA FIX ENVIRONMENTAL SERVICES INC | Eshleman Troy | Officer | BUY | $7.35 | 1,350 | $9,923 | 1,350 |
| 2025-03-19 20:49 | 2025-03-18 | PESI | PERMA FIX ENVIRONMENTAL SERVICES INC | Duff Mark | Director, Officer | BUY | $7.15 | 1,000 | $7,150 | 131,609 |
| 2025-03-18 21:56 | 2025-03-17 | PESI | PERMA FIX ENVIRONMENTAL SERVICES INC | CENTOFANTI LOUIS F | Director, Officer | BUY | $7.31 | 1,000 | $7,310 | 218,765 |
| 2025-03-11 20:41 | 2025-03-10 | CLH | CLEAN HARBORS INC | Speights Robert | Officer | SELL | $190.44 | 2,725 | $518,949 | 40,008 |
| 2025-03-11 18:21 | 2025-03-10 | CLH | CLEAN HARBORS INC | Dugas Eric J. | Officer | BUY | $191.38 | 1,050 | $200,949 | 24,238 |
| 2025-03-04 17:34 | 2025-03-03 | CLH | CLEAN HARBORS INC | MCKIM ALAN S | Director, Officer | SELL | $210.28 | 52,999 | $11,144,847 | 2,397,896 |
| 2025-02-19 18:39 | 2025-02-18 | CLH | CLEAN HARBORS INC | States Lauren | Director | SELL | $228.79 | 308 | $70,467 | 11,918 |
| 2025-01-16 17:37 | 2025-01-15 | CLH | CLEAN HARBORS INC | States Lauren | Director | SELL | $239.04 | 308 | $73,624 | 12,226 |
| 2024-12-17 20:15 | 2024-12-16 | CLH | CLEAN HARBORS INC | States Lauren | Director | SELL | $245.06 | 308 | $75,478 | 12,534 |
| 2024-12-05 01:25 | 2024-12-03 | SKYQ | Sky Quarry Inc. | LAUN MARCUS G | Director, Officer | BUY | $0.94 | 1,200 | $1,128 | 1,292,978 |
| 2024-11-27 20:50 | 2024-11-27 | CLH | CLEAN HARBORS INC | Weber Brian P | Officer | SELL | $261.31 | 861 | $224,988 | 59,346 |
| 2024-11-18 20:59 | 2024-11-15 | CLH | CLEAN HARBORS INC | States Lauren | Director | SELL | $249.78 | 308 | $76,932 | 12,842 |
| 2024-11-18 16:39 | 2024-11-15 | CLH | CLEAN HARBORS INC | GERSTENBERG ERIC W | Officer | SELL | $250.42 | 6,051 | $1,515,291 | 55,657 |
| 2024-11-06 20:04 | 2024-11-05 | CLH | CLEAN HARBORS INC | Speights Robert | Officer | SELL | $240.14 | 610 | $146,485 | 39,160 |
| 2024-10-16 17:17 | 2024-10-15 | CLH | CLEAN HARBORS INC | States Lauren | Director | SELL | $260.74 | 308 | $80,308 | 13,150 |
Sector-Wide Insider Alpha
Analyzing insider movements across the Hazardous Waste Management sector provides a macro-view of executive conviction. When multiple leaders in different companies within the same SIC code (4955) simultaneously buy shares, it often indicates an industry-wide undervaluation or a positive shift in market cycles.
SEC Filings in Hazardous Waste Management
Every transaction in the Hazardous Waste Management industry is reported via Form 4 disclosures. By filtering these filings by industry, investors can detect institutional-scale sentiment shifts before they are reflected in broader market indices, following the capital flow of those with intimate industry knowledge.
UNDERSTANDING THE DATA
FILING DATE: The date and time when the transaction was reported to the SEC. This is when the public first receives the information.
TRADE DATE: The actual day the insider executed the purchase or sale in the market.
INDUSTRY: The specific market sector the company operates in. Useful for identifying broader institutional capital flows across sectors.
OWNED AFTER: The total number of shares held by the insider following the transaction. This highlights the insider's remaining conviction in the company.
CHANGE %: The percentage increase or decrease of the insider's total position. Large percentage changes often carry more weight than the dollar amount alone.
TRADE TYPES DEFINITIONS
BUY: An open market purchase. Typically indicates an insider's belief that the stock is undervalued or poised for growth.
SELL: An open market sale. While often used for diversification or liquidity, large or unexpected sales can be a warning signal.
OPT+S (OPTION EXERCISE & SALE): This occurs when an insider exercises their stock options and sells them immediately. Often part of a structured compensation plan.