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John T Preston
Insider
First SEC filing: Feb. 4, 2010 · Latest: Jan. 23, 2018
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net: $0
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| May 20, 2026 | CLH | A | 652 | · | · | 7,044 Direct | +10.20% | Acquired | (price as of 2026-10-02) |
| May 21, 2025 | CLH | A | 789 | · | · | 6,392 Direct | +14.08% | Acquired | (price as of 2026-10-02) |
| May 22, 2024 | CLH | A | 836 | · | · | 5,603 Direct | +17.54% | Acquired | (price as of 2026-10-02) |
| March 14, 2024 | CLH | S | 1,913 | $188.36 | $360,333 | 4,767 Direct | -28.64% | Disposed | 69.1% (price as of 2026-10-02) |
| Aug. 16, 2023 | CLH | S | 2,095 | $173.68 | $363,860 | 6,680 Direct | -23.87% | Disposed | 83.4% (price as of 2026-10-02) |
| May 24, 2023 | CLH | A | 1,148 | · | · | 8,775 Direct | +15.05% | Acquired | (price as of 2026-10-02) |
| March 2, 2023 | CLH | S | 3,750 | $134.90 | $505,875 | 7,627 Direct | -32.96% | Disposed | 136.1% (price as of 2026-10-02) |
| Aug. 8, 2022 | CLH | S | 2,168 | $111.50 | $241,732 | 11,377 Direct | -16.01% | Disposed | 185.7% (price as of 2026-10-02) |
| May 25, 2022 | CLH | A | 1,849 | · | · | 13,545 Direct | +15.81% | Acquired | (price as of 2026-10-02) |
| Jan. 3, 2022 | CLH | A | 257 | · | · | 11,696 Direct | +2.25% | Acquired | (price as of 2026-10-02) |
| June 3, 2021 | CLH | A | 1,513 | · | · | 11,439 Direct | +15.24% | Acquired | (price as of 2026-10-02) |
| Feb. 26, 2021 | CLH | S | 6,000 | $85.49 | $512,940 | 9,926 Direct | -37.67% | Disposed | 272.6% (price as of 2026-10-02) |
| June 3, 2020 | CLH | A | 2,168 | · | · | 15,926 Direct | +15.76% | Acquired | (price as of 2026-10-02) |
| June 5, 2019 | CLH | A | 2,095 | · | · | 13,758 Direct | +17.96% | Acquired | (price as of 2026-10-02) |
| June 6, 2018 | CLH | A | 2,236 | · | · | 11,663 Direct | +23.72% | Acquired | (price as of 2026-10-02) |
| March 6, 2018 | CLH | S | 5,000 | $50.93 | $254,650 | 9,427 Direct | -34.66% | Disposed | 525.4% (price as of 2026-10-02) |
| June 7, 2017 | CLH | A | 2,057 | · | · | 17,027 Direct | +13.74% | Acquired | (price as of 2026-10-02) |
| June 8, 2016 | CLH | A | 2,210 | · | · | 14,970 Direct | +17.32% | Acquired | (price as of 2026-10-02) |
| June 10, 2015 | CLH | A | 1,786 | · | · | 12,760 Direct | +16.27% | Acquired | (price as of 2026-10-02) |
| May 13, 2015 | CLH | S | 4,523 | $56.06 | $253,559 | 10,974 Direct | -29.19% | Disposed | 468.2% (price as of 2026-10-02) |
| June 18, 2014 | CLH | A | 1,608 | · | · | 15,497 Direct | +11.58% | Acquired | (price as of 2026-10-02) |
| Oct. 1, 2013 | CLH | A | 249 | $58.60 | $14,591 | 13,889 Direct | +1.83% | Acquired | 443.5% (price as of 2026-10-02) |
| May 6, 2013 | CLH | A | 1,334 | · | · | 13,640 Direct | +10.84% | Acquired | (price as of 2026-10-02) |
| May 7, 2012 | CLH | A | 1,140 | · | · | 12,306 Direct | +10.21% | Acquired | (price as of 2026-10-02) |
| April 7, 2011 | CLH | S | 6,000 | $104.61 | $627,660 | 5,583 Direct | -51.80% | Disposed | 508.9% (price as of 2026-10-02) |
| April 7, 2011 | CLH | M | 6,000 | $34.77 | $208,620 | 11,583 Direct | +107.47% | Acquired | 1732.1% (price as of 2026-10-02) |
| May 10, 2010 | CLH | A | 383 | · | · | 5,583 Direct | +7.37% | Acquired | (price as of 2026-10-02) |
| June 12, 2009 | CLH | A | 300 | · | · | 6,900 Direct | +4.55% | Acquired | (price as of 2026-10-02) |
| May 11, 2009 | CLH | A | 2,700 | · | · | 6,600 Direct | +69.23% | Acquired | (price as of 2026-10-02) |
| May 15, 2008 | CLH | A | 300 | · | · | 3,900 Direct | +8.33% | Acquired | (price as of 2026-10-02) |
| March 18, 2008 | CLH | M | 6,000 | $10.37 | $62,220 | 0 Direct | -100.00% | Disposed | 6042.9% (price as of 2026-10-02) |
| March 18, 2008 | CLH | S | 6,000 | $63.07 | $378,420 | 3,600 Direct | -62.50% | Disposed | 910.0% (price as of 2026-10-02) |
| March 18, 2008 | CLH | M | 6,000 | $10.37 | $62,220 | 9,600 Direct | +166.67% | Acquired | 6042.9% (price as of 2026-10-02) |
| May 18, 2007 | CLH | A | 300 | · | · | 3,600 Direct | +9.09% | Acquired | (price as of 2026-10-02) |
| Sept. 20, 2006 | CLH | A | 300 | · | · | 3,300 Direct | +10.00% | Acquired | (price as of 2026-10-02) |
| Dec. 8, 2004 | CLH | M | 16,000 | $1.88 | $30,080 | 19,000 Direct | +533.33% | Acquired | 33784.0% (price as of 2026-10-02) |
| Dec. 8, 2004 | CLH | S | 16,000 | $12.48 | $199,680 | 3,000 Direct | -84.21% | Disposed | 5004.3% (price as of 2026-10-02) |
| Dec. 8, 2004 | CLH | M | 16,000 | $1.87 | $29,920 | 0 Direct | -100.00% | Disposed | 33965.2% (price as of 2026-10-02) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II) Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| March 18, 2008 | CLH | Common Stock | Common Stock | $10.37 | May 15, 2008 | 6,000 | Disposed |
| Dec. 8, 2004 | CLH | Stock Option | Common Stock | $1.87 | June 16, 2005 | 16,000 | Disposed |
Exercise/conversion price is blank when not applicable (e.g. RSUs).