Insider Selling at Clean Harbors: What It Means for Shareholders
Clean Harbors’ latest Form 4 filing shows EVP of Industrial Services, Geer Charles H. II, sold 294 shares on 2 November 2026 at a price of $302.12, bringing his holdings to 10,505 shares. The transaction is effectively a routine tax‑liability settlement, but it sits on a broader pattern of modest, frequent sales by Geer over the past year. From February through March 2026 he sold 139 shares, and in July he sold another 40 shares, after having bought 503 shares in early February. His total share count has hovered between 8,600 and 11,000 shares, a small fraction of the company’s ~5.4 billion shares outstanding. The move therefore does not signal a dramatic change in confidence, but it does add a touch of volatility to a stock that has been trading near $296 after a 7.8 % month‑over‑month decline.
Impact on Investors and the Company’s Outlook
Clean Harbors has faced a moderate sell‑off in the last quarter, with the share price down 4.99 % weekly and 7.78 % monthly, despite a 43.67 % year‑to‑date gain. The company’s price‑earnings ratio of 30.48 suggests that investors are still valuing a growing industrial waste‑management business, but the recent sales by insiders—particularly the 1,843 shares bought and 503 sold in February—indicate that management is fine‑tuning its exposure. For investors, the key takeaway is that insider activity remains largely neutral; the volume is small relative to the market cap of $15.9 billion, and there is no evidence of a coordinated sell‑off that would undermine long‑term fundamentals. Instead, the transactions appear to be routine liquidity moves rather than a signal of impending financial distress.
Geer Charles H. II: A Profile Based on Past Deals
Geer’s insider history shows a pattern of buying during periods of market weakness and selling when prices are near or slightly above the company’s 52‑week high of $335.94. In December 2025 he sold 28 shares at $240.71, and in January 2026 he sold 294 shares at $210.51. His most recent sale at $302.12 is close to the current price of $298.89, suggesting a modest profit taking on a position that has grown from 8,617 shares in February to over 10,000 by November. Geer’s overall ownership level has stayed between 8,600 and 11,000 shares, a small but stable stake that aligns with his role overseeing industrial services—a core revenue generator for Clean Harbors. Historically, Geer’s trades have not been accompanied by any public statements, implying that his actions are driven by personal portfolio management rather than corporate signals.
Contextualizing Insider Activity Across the Board
The broader insider landscape at Clean Harbors is similarly quiet. In late October, Karyn Polito added 125 shares, bringing her holdings above 4,000, but no other large trades were reported in the same filing period. Other executives, such as CO‑CEO Eric Gerstenberg and EVP CIO Gabriel Sharon, have executed sizable sales earlier in the year, yet their positions are much larger than Geer’s and are spread over multiple transactions. The overall pattern suggests that management is maintaining a balanced portfolio: occasional sales for liquidity, but no mass divestiture that would undermine confidence.
Bottom Line for Investors
For the average investor, Geer Charles H. II’s recent sale is a routine transaction that does not materially affect Clean Harbors’ market position. The company’s core business remains robust, with a strong track record of environmental remediation services across the United States and Puerto Rico. While insider selling can sometimes presage a shift in sentiment, the modest scale of Geer’s transactions, combined with the company’s solid fundamentals and a relatively low social‑media buzz, indicates that Clean Harbors is likely to continue its steady growth trajectory. Investors should monitor future filings for any larger, more concentrated sales that might signal a change in management outlook, but for now the stock remains a disciplined, industrial‑services play with a clear long‑term value proposition.
| Date | Owner | Transaction Type | Shares | Price per Share | Security |
|---|---|---|---|---|---|
| 2026-11-02 | Geer Charles H. II (EVP, Industrial Services) | Sell | 294.00 | 302.12 | Common Stock |




