Michael J Twohig
Insider
First SEC filing: April 5, 2021 · Latest: April 5, 2021
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 |
|---|---|---|---|---|---|---|---|---|---|
| March 27, 2023 | CLH | S | 2,000 | $134.42 | $268,840 | 28,857 Direct | -6.48% | Disposed | 136.6% (price as of 2026-10-06) |
| March 15, 2023 | CLH | S | 290 | $133.07 | $38,590 | 30,857 Direct | -0.93% | Disposed | 139.0% (price as of 2026-10-06) |
| Dec. 15, 2022 | CLH | F | 163 | $116.50 | $18,990 | 31,147 Direct | -0.52% | Disposed | 173.0% (price as of 2026-10-06) |
| July 1, 2022 | CLH | F | 716 | $90.32 | $64,669 | 31,310 Direct | -2.24% | Disposed | 252.1% (price as of 2026-10-06) |
| April 1, 2022 | CLH | F | 490 | $112.93 | $55,336 | 32,026 Direct | -1.51% | Disposed | 181.6% (price as of 2026-10-06) |
| March 15, 2022 | CLH | F | 48 | $105.77 | $5,077 | 32,516 Direct | -0.15% | Disposed | 200.7% (price as of 2026-10-06) |
| March 10, 2022 | CLH | D | 496 | · | · | 32,564 Direct | -1.50% | Disposed | (price as of 2026-10-06) |
| Feb. 7, 2022 | CLH | A | 1,109 | · | · | 33,060 Direct | +3.47% | Acquired | (price as of 2026-10-06) |
| Feb. 7, 2022 | CLH | A | 4,066 | · | · | 31,951 Direct | +14.58% | Acquired | (price as of 2026-10-06) |
| Dec. 15, 2021 | CLH | F | 453 | $98.73 | $44,725 | 27,885 Direct | -1.60% | Disposed | 222.2% (price as of 2026-10-06) |
| July 1, 2021 | CLH | F | 429 | $93.23 | $39,996 | 28,338 Direct | -1.49% | Disposed | 241.2% (price as of 2026-10-06) |
| July 1, 2021 | CLH | A | 1,177 | · | · | 28,767 Direct | +4.27% | Acquired | (price as of 2026-10-06) |
| July 1, 2021 | CLH | A | 4,314 | · | · | 27,590 Direct | +18.53% | Acquired | (price as of 2026-10-06) |
| June 1, 2021 | CLH | F | 117 | $94.13 | $11,013 | 23,276 Direct | -0.50% | Disposed | 237.9% (price as of 2026-10-06) |
| April 1, 2021 | CLH | F | 490 | $86.15 | $42,214 | 23,393 Direct | -2.05% | Disposed | 269.2% (price as of 2026-10-06) |
| March 15, 2021 | CLH | S | 4,557 | $88.32 | $402,474 | 24,979 Direct | -15.43% | Disposed | 260.1% (price as of 2026-10-06) |
| March 15, 2021 | CLH | F | 330 | $89.50 | $29,535 | 24,649 Direct | -1.32% | Disposed | 255.4% (price as of 2026-10-06) |
| March 15, 2021 | CLH | D | 766 | · | · | 23,883 Direct | -3.11% | Disposed | (price as of 2026-10-06) |
| Dec. 15, 2020 | CLH | F | 201 | $72.99 | $14,671 | 29,536 Direct | -0.68% | Disposed | 335.8% (price as of 2026-10-06) |
| July 1, 2020 | CLH | F | 296 | $58.30 | $17,257 | 29,737 Direct | -0.99% | Disposed | 445.6% (price as of 2026-10-06) |
| July 1, 2020 | CLH | A | 2,478 | · | · | 30,003 Direct | +9.00% | Acquired | (price as of 2026-10-06) |
| July 1, 2020 | CLH | A | 1,858 | · | · | 27,555 Direct | +7.23% | Acquired | (price as of 2026-10-06) |
| June 1, 2020 | CLH | F | 206 | $60.78 | $12,521 | 25,697 Direct | -0.80% | Disposed | 423.3% (price as of 2026-10-06) |
| April 1, 2020 | CLH | F | 979 | $45.91 | $44,946 | 25,903 Direct | -3.64% | Disposed | 592.8% (price as of 2026-10-06) |
| March 15, 2020 | CLH | F | 122 | $54.33 | $6,628 | 26,882 Direct | -0.45% | Disposed | 485.4% (price as of 2026-10-06) |
| Dec. 27, 2019 | CLH | S | 2,500 | $86.67 | $216,675 | 27,004 Direct | -8.47% | Disposed | 267.0% (price as of 2026-10-06) |
| Dec. 15, 2019 | CLH | F | 314 | $83.68 | $26,276 | 29,504 Direct | -1.05% | Disposed | 280.1% (price as of 2026-10-06) |
| July 1, 2019 | CLH | A | 1,436 | · | · | 29,818 Direct | +5.06% | Acquired | (price as of 2026-10-06) |
| July 1, 2019 | CLH | A | 1,915 | · | · | 28,382 Direct | +7.24% | Acquired | (price as of 2026-10-06) |
| June 3, 2019 | CLH | F | 522 | $64.12 | $33,471 | 26,467 Direct | -1.93% | Disposed | 396.0% (price as of 2026-10-06) |
| April 1, 2019 | CLH | F | 981 | $72.00 | $70,632 | 26,989 Direct | -3.51% | Disposed | 341.8% (price as of 2026-10-06) |
| April 1, 2019 | CLH | A | 5,000 | · | · | 27,970 Direct | +21.77% | Acquired | (price as of 2026-10-06) |
| March 15, 2019 | CLH | F | 261 | $68.74 | $17,941 | 22,970 Direct | -1.12% | Disposed | 362.7% (price as of 2026-10-06) |
| March 13, 2019 | CLH | D | 1,456 | · | · | 23,231 Direct | -5.90% | Disposed | (price as of 2026-10-06) |
| Dec. 14, 2018 | CLH | F | 92 | $55.53 | $5,109 | 24,687 Direct | -0.37% | Disposed | 472.8% (price as of 2026-10-06) |
| Sept. 6, 2018 | CLH | S | 4,211 | $69.65 | $293,296 | 24,779 Direct | -14.53% | Disposed | 356.7% (price as of 2026-10-06) |
| July 1, 2018 | CLH | A | 1,869 | · | · | 28,990 Direct | +6.89% | Acquired | (price as of 2026-10-06) |
| July 1, 2018 | CLH | A | 2,492 | · | · | 27,121 Direct | +10.12% | Acquired | (price as of 2026-10-06) |
| June 5, 2018 | CLH | S | 2,836 | $53.43 | $151,527 | 24,629 Direct | -10.33% | Disposed | 495.3% (price as of 2026-10-06) |
| June 1, 2018 | CLH | F | 350 | $53.69 | $18,792 | 27,465 Direct | -1.26% | Disposed | 492.4% (price as of 2026-10-06) |
| April 2, 2018 | CLH | F | 982 | $48.81 | $47,931 | 27,815 Direct | -3.41% | Disposed | 551.6% (price as of 2026-10-06) |
| March 15, 2018 | CLH | F | 144 | $49.98 | $7,197 | 28,797 Direct | -0.50% | Disposed | 536.4% (price as of 2026-10-06) |
| Feb. 28, 2018 | CLH | F | 1,583 | · | · | 28,941 Direct | -5.19% | Disposed | (price as of 2026-10-06) |
| Dec. 15, 2017 | CLH | F | 180 | $52.17 | $9,391 | 30,524 Direct | -0.59% | Disposed | 509.7% (price as of 2026-10-06) |
| July 1, 2017 | CLH | A | 1,680 | · | · | 30,704 Direct | +5.79% | Acquired | (price as of 2026-10-06) |
| July 1, 2017 | CLH | A | 2,241 | · | · | 29,024 Direct | +8.37% | Acquired | (price as of 2026-10-06) |
| June 2, 2017 | CLH | S | 4,071 | $59.25 | $241,207 | 26,783 Direct | -13.19% | Disposed | 436.8% (price as of 2026-10-06) |
| June 1, 2017 | CLH | F | 262 | $59.25 | $15,524 | 30,854 Direct | -0.84% | Disposed | 436.8% (price as of 2026-10-06) |
| April 1, 2017 | CLH | A | 5,000 | · | · | 31,655 Direct | +18.76% | Acquired | (price as of 2026-10-06) |
| March 31, 2017 | CLH | F | 539 | $55.62 | $29,979 | 31,116 Direct | -1.70% | Disposed | 471.8% (price as of 2026-10-06) |
| March 30, 2017 | CLH | F | 95 | $50.05 | $4,755 | 26,655 Direct | -0.36% | Disposed | 535.5% (price as of 2026-10-06) |
| March 16, 2017 | CLH | F | 269 | $55.74 | $14,994 | 26,750 Direct | -1.00% | Disposed | 470.6% (price as of 2026-10-06) |
| March 8, 2017 | CLH | D | 1,615 | · | · | 27,019 Direct | -5.64% | Disposed | (price as of 2026-10-06) |
| Dec. 15, 2016 | CLH | F | 93 | $57.13 | $5,313 | 28,634 Direct | -0.32% | Disposed | 456.7% (price as of 2026-10-06) |
| Dec. 15, 2016 | CLH | S | 2,154 | $56.59 | $121,895 | 28,727 Direct | -6.98% | Disposed | 462.0% (price as of 2026-10-06) |
| June 21, 2016 | CLH | F | 108 | $51.86 | $5,601 | 30,881 Direct | -0.35% | Disposed | 513.3% (price as of 2026-10-06) |
| June 7, 2016 | CLH | A | 2,643 | · | · | 30,989 Direct | +9.32% | Acquired | (price as of 2026-10-06) |
| June 7, 2016 | CLH | A | 1,982 | · | · | 28,346 Direct | +7.52% | Acquired | (price as of 2026-10-06) |
| April 1, 2016 | CLH | F | 263 | $49.83 | $13,105 | 26,364 Direct | -0.99% | Disposed | 538.3% (price as of 2026-10-06) |
| April 1, 2016 | CLH | A | 5,000 | · | · | 26,627 Direct | +23.12% | Acquired | (price as of 2026-10-06) |
| March 30, 2016 | CLH | F | 79 | $49.70 | $3,926 | 21,627 Direct | -0.36% | Disposed | 540.0% (price as of 2026-10-06) |
| March 29, 2016 | CLH | S | 2,000 | $48.50 | $97,000 | 21,706 Direct | -8.44% | Disposed | 555.8% (price as of 2026-10-06) |
| March 15, 2016 | CLH | F | 343 | $45.77 | $15,699 | 23,706 Direct | -1.43% | Disposed | 594.9% (price as of 2026-10-06) |
| March 8, 2016 | CLH | D | 1,385 | · | · | 24,049 Direct | -5.45% | Disposed | (price as of 2026-10-06) |
| Dec. 15, 2015 | CLH | F | 45 | $41.11 | $1,850 | 25,434 Direct | -0.18% | Disposed | 673.7% (price as of 2026-10-06) |
| June 22, 2015 | CLH | F | 112 | $55.34 | $6,198 | 25,479 Direct | -0.44% | Disposed | 474.7% (price as of 2026-10-06) |
| June 9, 2015 | CLH | A | 2,020 | · | · | 25,591 Direct | +8.57% | Acquired | (price as of 2026-10-06) |
| June 9, 2015 | CLH | A | 1,515 | · | · | 23,571 Direct | +6.87% | Acquired | (price as of 2026-10-06) |
| April 1, 2015 | CLH | F | 272 | $57.11 | $15,534 | 22,056 Direct | -1.22% | Disposed | 456.9% (price as of 2026-10-06) |
| March 30, 2015 | CLH | F | 245 | $56.69 | $13,889 | 22,328 Direct | -1.09% | Disposed | 461.1% (price as of 2026-10-06) |
| March 15, 2015 | CLH | F | 45 | $56.32 | $2,534 | 22,573 Direct | -0.20% | Disposed | 464.7% (price as of 2026-10-06) |
| March 10, 2015 | CLH | D | 1,642 | · | · | 22,618 Direct | -6.77% | Disposed | (price as of 2026-10-06) |
| June 20, 2014 | CLH | F | 334 | $63.10 | $21,075 | 24,260 Direct | -1.36% | Disposed | 404.1% (price as of 2026-10-06) |
| June 18, 2014 | CLH | A | 1,846 | · | · | 24,594 Direct | +8.11% | Acquired | (price as of 2026-10-06) |
| June 18, 2014 | CLH | A | 1,384 | · | · | 22,748 Direct | +6.48% | Acquired | (price as of 2026-10-06) |
| April 1, 2014 | CLH | F | 272 | $53.20 | $14,470 | 21,364 Direct | -1.26% | Disposed | 497.9% (price as of 2026-10-06) |
| Feb. 26, 2014 | CLH | D | 1,670 | · | · | 21,636 Direct | -7.17% | Disposed | (price as of 2026-10-06) |
| May 6, 2013 | CLH | A | 2,053 | · | · | 23,306 Direct | +9.66% | Acquired | (price as of 2026-10-06) |
| May 6, 2013 | CLH | A | 1,540 | · | · | 21,253 Direct | +7.81% | Acquired | (price as of 2026-10-06) |
| March 15, 2013 | CLH | A | 2,500 | · | · | 19,713 Direct | +14.52% | Acquired | (price as of 2026-10-06) |
| Dec. 15, 2012 | CLH | F | 800 | $56.05 | $44,840 | 17,213 Direct | -4.44% | Disposed | 467.5% (price as of 2026-10-06) |
| Aug. 27, 2012 | CLH | M | 10,400 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-06) |
| Aug. 27, 2012 | CLH | S | 10,400 | $55.05 | $572,520 | 18,013 Direct | -36.60% | Disposed | 477.8% (price as of 2026-10-06) |
| Aug. 27, 2012 | CLH | M | 10,400 | $6.49 | $67,496 | 28,413 Direct | +57.74% | Acquired | 4800.8% (price as of 2026-10-06) |
| Aug. 22, 2012 | CLH | M | 5,549 | · | · | 10,400 Direct | -34.79% | Disposed | (price as of 2026-10-06) |
| Aug. 22, 2012 | CLH | S | 5,549 | $56.03 | $310,910 | 18,013 Direct | -23.55% | Disposed | 467.7% (price as of 2026-10-06) |
| Aug. 22, 2012 | CLH | M | 5,549 | $6.49 | $36,013 | 23,562 Direct | +30.81% | Acquired | 4800.8% (price as of 2026-10-06) |
| Aug. 21, 2012 | CLH | M | 2,551 | · | · | 15,949 Direct | -13.79% | Disposed | (price as of 2026-10-06) |
| Aug. 21, 2012 | CLH | S | 2,551 | $56.63 | $144,463 | 18,013 Direct | -12.41% | Disposed | 461.6% (price as of 2026-10-06) |
| Aug. 21, 2012 | CLH | M | 2,551 | $6.49 | $16,556 | 20,564 Direct | +14.16% | Acquired | 4800.8% (price as of 2026-10-06) |
| March 30, 2012 | CLH | A | 1,253 | · | · | 18,013 Direct | +7.48% | Acquired | (price as of 2026-10-06) |
| March 30, 2012 | CLH | A | 1,670 | · | · | 16,760 Direct | +11.07% | Acquired | (price as of 2026-10-06) |
| March 15, 2012 | CLH | F | 362 | $68.96 | $24,964 | 15,090 Direct | -2.34% | Disposed | 361.2% (price as of 2026-10-06) |
| Dec. 15, 2011 | CLH | F | 769 | $58.59 | $45,056 | 15,452 Direct | -4.74% | Disposed | 442.9% (price as of 2026-10-06) |
| Dec. 15, 2011 | CLH | F | 425 | $58.59 | $24,901 | 16,221 Direct | -2.55% | Disposed | 442.9% (price as of 2026-10-06) |
| Dec. 15, 2011 | CLH | F | 188 | $58.59 | $11,015 | 16,646 Direct | -1.12% | Disposed | 442.9% (price as of 2026-10-06) |
| Sept. 20, 2011 | CLH | S | 1,500 | $56.65 | $84,975 | 16,834 Direct | -8.18% | Disposed | 461.4% (price as of 2026-10-06) |
| Sept. 20, 2011 | CLH | M | 1,500 | $6.49 | $9,735 | 18,334 Direct | +8.91% | Acquired | 4800.8% (price as of 2026-10-06) |
| Sept. 20, 2011 | CLH | M | 1,500 | $6.49 | $9,735 | 18,500 Direct | -7.50% | Disposed | 4800.8% (price as of 2026-10-06) |
| Sept. 20, 2011 | CLH | S | 1,500 | $56.65 | $84,975 | 8,417 Direct | -15.13% | Disposed | 461.4% (price as of 2026-10-06) |
Showing latest 100 of 140 transactions
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 |
|---|---|---|---|---|---|---|---|
| Aug. 27, 2012 | CLH | Employee Stock Option | Common Stock | $6.49 | Feb. 21, 2013 | 10,400 | Disposed |
| Aug. 22, 2012 | CLH | Employee Stock Option | Common Stock | $6.49 | Feb. 21, 2013 | 5,549 | Disposed |
| Aug. 21, 2012 | CLH | Employee Stock Option | Common Stock | $6.49 | Feb. 21, 2013 | 2,551 | Disposed |
| Sept. 20, 2011 | CLH | Employee Stock Option | Common Stock | $6.49 | Feb. 21, 2013 | 1,500 | Disposed |
| Dec. 6, 2010 | CLH | Common Stock | Common Stock | $12.98 | Feb. 21, 2013 | 3,000 | Disposed |
| Dec. 6, 2010 | CLH | Common Stock | Common Stock | $6.46 | March 15, 2012 | 1,000 | Disposed |
| Dec. 19, 2008 | CLH | Employee Stock Option | Common Stock | $6.46 | March 15, 2012 | 1,000 | Disposed |
| Dec. 12, 2006 | CLH | Employee stock option | Common Stock | $12.98 | Feb. 21, 2013 | 2,000 | Disposed |
| Dec. 12, 2006 | CLH | Employee stock option | Common Stock | $6.46 | March 15, 2012 | 2,500 | Disposed |
| June 2, 2006 | CLH | Exercise of Employee Stock Option | Common Stock | $6.46 | March 15, 2012 | 2,500 | Disposed |
| April 1, 2005 | CLH | Employee Stock Option | Common Stock | $6.46 | March 15, 2012 | 3,000 | Disposed |
| April 1, 2005 | CLH | Employee Stock Option | Common Stock | $2.50 | Feb. 25, 2010 | 6,000 | Disposed |
Exercise/conversion price is blank when not applicable (e.g. RSUs).