David M Parry

Insider

First SEC filing: Sept. 18, 2018 · Latest: Sept. 18, 2018

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Insider at Companies where this person is a reporting insider.
Insider transactions Every share this person bought or sold, from Form 4 filings.
Derivatives Options and other derivative holdings reported by this person.
Compensation Executive pay disclosed in company proxy statements.

Insider at

CLH selling Aug. 31, 2018

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 85 non-open-market transactions below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

85 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Sept. 15, 2018	CLH	D	31,054	—	—	11,544 Direct	-72.90%	Disposed	(price as of 2026-08-20)
Aug. 31, 2018	CLH	S	4,579	$68.76	$314,852	42,598 Direct	-9.71%	Disposed	372.9% (price as of 2026-08-20)
Aug. 7, 2018	CLH	S	3,026	$61.93	$187,400	47,177 Direct	-6.03%	Disposed	425.1% (price as of 2026-08-20)
July 1, 2018	CLH	A	3,786	—	—	50,203 Direct	+8.16%	Acquired	(price as of 2026-08-20)
July 1, 2018	CLH	A	5,301	—	—	46,417 Direct	+12.89%	Acquired	(price as of 2026-08-20)
June 1, 2018	CLH	F	808	$53.69	$43,382	41,116 Direct	-1.93%	Disposed	505.7% (price as of 2026-08-20)
April 2, 2018	CLH	F	1,473	$48.81	$71,897	41,924 Direct	-3.39%	Disposed	566.3% (price as of 2026-08-20)
March 15, 2018	CLH	F	321	$49.98	$16,044	43,397 Direct	-0.73%	Disposed	550.7% (price as of 2026-08-20)
Feb. 28, 2018	CLH	F	3,372	—	—	43,718 Direct	-7.16%	Disposed	(price as of 2026-08-20)
Dec. 15, 2017	CLH	F	412	$52.17	$21,494	47,090 Direct	-0.87%	Disposed	523.3% (price as of 2026-08-20)
July 1, 2017	CLH	A	3,404	—	—	47,502 Direct	+7.72%	Acquired	(price as of 2026-08-20)
July 1, 2017	CLH	A	4,766	—	—	44,098 Direct	+12.12%	Acquired	(price as of 2026-08-20)
June 1, 2017	CLH	F	623	$59.25	$36,913	39,332 Direct	-1.56%	Disposed	448.9% (price as of 2026-08-20)
June 1, 2017	CLH	S	4,402	$58.96	$259,542	39,955 Direct	-9.92%	Disposed	451.6% (price as of 2026-08-20)
April 1, 2017	CLH	A	5,000	—	—	45,439 Direct	+12.36%	Acquired	(price as of 2026-08-20)
March 31, 2017	CLH	F	1,082	$55.62	$60,181	44,357 Direct	-2.38%	Disposed	484.7% (price as of 2026-08-20)
March 30, 2017	CLH	F	183	$50.05	$9,159	40,439 Direct	-0.45%	Disposed	549.8% (price as of 2026-08-20)
March 16, 2017	CLH	F	577	$55.74	$32,162	40,622 Direct	-1.40%	Disposed	483.4% (price as of 2026-08-20)
March 8, 2017	CLH	D	3,918	—	—	41,199 Direct	-8.68%	Disposed	(price as of 2026-08-20)
Dec. 15, 2016	CLH	F	223	$57.13	$12,740	45,117 Direct	-0.49%	Disposed	469.2% (price as of 2026-08-20)
Aug. 31, 2016	CLH	S	4,060	$47.37	$192,322	45,340 Direct	-8.22%	Disposed	586.5% (price as of 2026-08-20)
June 21, 2016	CLH	F	221	$51.86	$11,461	49,400 Direct	-0.45%	Disposed	527.1% (price as of 2026-08-20)
June 7, 2016	CLH	A	5,622	—	—	49,621 Direct	+12.78%	Acquired	(price as of 2026-08-20)
June 7, 2016	CLH	A	4,015	—	—	43,999 Direct	+10.04%	Acquired	(price as of 2026-08-20)
June 7, 2016	CLH	A	5,622	—	—	49,621 Direct	+12.78%	Acquired	(price as of 2026-08-20)
June 7, 2016	CLH	A	4,015	—	—	43,999 Direct	+10.04%	Acquired	(price as of 2026-08-20)
April 1, 2016	CLH	A	10,000	—	—	39,984 Direct	+33.35%	Acquired	(price as of 2026-08-20)
March 30, 2016	CLH	F	183	$49.70	$9,095	29,984 Direct	-0.61%	Disposed	554.3% (price as of 2026-08-20)
March 28, 2016	CLH	S	7,075	$47.96	$339,317	30,167 Direct	-19.00%	Disposed	578.1% (price as of 2026-08-20)
March 15, 2016	CLH	F	792	$45.77	$36,250	37,242 Direct	-2.08%	Disposed	610.5% (price as of 2026-08-20)
March 11, 2016	CLH	F	1,613	$45.75	$73,795	38,034 Direct	-4.07%	Disposed	610.8% (price as of 2026-08-20)
March 8, 2016	CLH	D	3,357	—	—	39,647 Direct	-7.81%	Disposed	(price as of 2026-08-20)
Dec. 15, 2015	CLH	F	108	$41.11	$4,440	43,004 Direct	-0.25%	Disposed	691.0% (price as of 2026-08-20)
June 22, 2015	CLH	F	228	$55.34	$12,618	43,112 Direct	-0.53%	Disposed	487.6% (price as of 2026-08-20)
June 9, 2015	CLH	A	4,899	—	—	43,340 Direct	+12.74%	Acquired	(price as of 2026-08-20)
June 9, 2015	CLH	A	3,499	—	—	38,441 Direct	+10.01%	Acquired	(price as of 2026-08-20)
June 2, 2015	CLH	S	5,044	$55.72	$281,052	34,942 Direct	-12.61%	Disposed	483.6% (price as of 2026-08-20)
March 30, 2015	CLH	F	565	$56.69	$32,030	39,986 Direct	-1.39%	Disposed	473.6% (price as of 2026-08-20)
March 15, 2015	CLH	F	108	$56.32	$6,083	40,551 Direct	-0.27%	Disposed	477.4% (price as of 2026-08-20)
March 10, 2015	CLH	F	1,625	$54.24	$88,140	40,659 Direct	-3.84%	Disposed	499.6% (price as of 2026-08-20)
March 10, 2015	CLH	D	3,983	—	—	42,284 Direct	-8.61%	Disposed	(price as of 2026-08-20)
June 20, 2014	CLH	F	684	$63.10	$43,160	46,039 Direct	-1.46%	Disposed	415.4% (price as of 2026-08-20)
June 18, 2014	CLH	S	4,058	$62.14	$252,164	46,723 Direct	-7.99%	Disposed	423.3% (price as of 2026-08-20)
June 18, 2014	CLH	A	4,476	—	—	50,781 Direct	+9.67%	Acquired	(price as of 2026-08-20)
June 18, 2014	CLH	A	3,197	—	—	46,305 Direct	+7.42%	Acquired	(price as of 2026-08-20)
May 6, 2014	CLH	F	228	$59.48	$13,561	43,108 Direct	-0.53%	Disposed	446.7% (price as of 2026-08-20)
March 11, 2014	CLH	F	1,628	$51.84	$84,396	43,336 Direct	-3.62%	Disposed	527.3% (price as of 2026-08-20)
Feb. 26, 2014	CLH	D	4,051	—	—	44,964 Direct	-8.26%	Disposed	(price as of 2026-08-20)
July 19, 2013	CLH	F	374	$56.15	$21,000	49,015 Direct	-0.76%	Disposed	479.2% (price as of 2026-08-20)
May 6, 2013	CLH	A	4,979	—	—	49,389 Direct	+11.21%	Acquired	(price as of 2026-08-20)
May 6, 2013	CLH	A	3,557	—	—	44,410 Direct	+8.71%	Acquired	(price as of 2026-08-20)
March 11, 2013	CLH	A	15,000	—	—	40,853 Direct	+58.02%	Acquired	(price as of 2026-08-20)
Dec. 15, 2012	CLH	F	1,350	$56.05	$75,668	25,853 Direct	-4.96%	Disposed	480.2% (price as of 2026-08-20)
Nov. 14, 2012	CLH	S	5,174	$56.15	$290,520	27,203 Direct	-15.98%	Disposed	479.2% (price as of 2026-08-20)
July 19, 2012	CLH	F	364	$59.53	$21,669	32,377 Direct	-1.11%	Disposed	446.3% (price as of 2026-08-20)
March 30, 2012	CLH	A	2,893	—	—	32,741 Direct	+9.69%	Acquired	(price as of 2026-08-20)
March 30, 2012	CLH	A	4,051	—	—	29,848 Direct	+15.70%	Acquired	(price as of 2026-08-20)
March 15, 2012	CLH	F	778	$68.96	$53,651	25,797 Direct	-2.93%	Disposed	371.6% (price as of 2026-08-20)
Dec. 15, 2011	CLH	F	1,110	$58.59	$65,035	26,575 Direct	-4.01%	Disposed	455.0% (price as of 2026-08-20)
Dec. 15, 2011	CLH	F	557	$58.59	$32,635	27,685 Direct	-1.97%	Disposed	455.0% (price as of 2026-08-20)
Dec. 15, 2011	CLH	F	224	$58.59	$13,124	28,242 Direct	-0.79%	Disposed	455.0% (price as of 2026-08-20)
July 19, 2011	CLH	F	182	$112.08	$20,399	14,233 Direct	-1.26%	Disposed	480.3% (price as of 2026-08-20)
June 20, 2011	CLH	A	1,750	—	—	14,415 Direct	+13.82%	Acquired	(price as of 2026-08-20)
June 20, 2011	CLH	A	2,450	—	—	12,665 Direct	+23.98%	Acquired	(price as of 2026-08-20)
March 15, 2011	CLH	F	833	$95.29	$79,377	10,215 Direct	-7.54%	Disposed	582.5% (price as of 2026-08-20)
Dec. 15, 2010	CLH	F	112	$78.38	$8,779	11,048 Direct	-1.00%	Disposed	729.8% (price as of 2026-08-20)
Nov. 4, 2010	CLH	M	8,500	$12.98	$110,330	0 Direct	-100.00%	Disposed	4910.8% (price as of 2026-08-20)
Nov. 4, 2010	CLH	S	8,500	$73.07	$621,095	11,160 Direct	-43.23%	Disposed	790.1% (price as of 2026-08-20)
Nov. 4, 2010	CLH	M	8,500	$12.98	$110,330	19,660 Direct	+76.16%	Acquired	4910.8% (price as of 2026-08-20)
July 19, 2010	CLH	A	1,719	—	—	11,160 Direct	+18.21%	Acquired	(price as of 2026-08-20)
April 20, 2010	CLH	A	3,496	—	—	9,441 Direct	+58.81%	Acquired	(price as of 2026-08-20)
March 8, 2010	CLH	D	3,130	—	—	5,945 Direct	-34.49%	Disposed	(price as of 2026-08-20)
Dec. 15, 2009	CLH	F	106	$58.30	$6,180	9,075 Direct	-1.15%	Disposed	1015.6% (price as of 2026-08-20)
March 18, 2009	CLH	A	2,654	—	—	9,181 Direct	+40.66%	Acquired	(price as of 2026-08-20)
March 16, 2009	CLH	F	164	$41.08	$6,737	6,527 Direct	-2.45%	Disposed	1483.3% (price as of 2026-08-20)
Aug. 29, 2008	CLH	M	1,500	$12.98	$19,470	8,500 Direct	-15.00%	Disposed	4910.8% (price as of 2026-08-20)
Aug. 29, 2008	CLH	M	1,000	$2.26	$2,260	0 Direct	-100.00%	Disposed	28678.8% (price as of 2026-08-20)
Aug. 29, 2008	CLH	S	1,500	$82.08	$123,120	6,691 Direct	-18.31%	Disposed	692.4% (price as of 2026-08-20)
Aug. 29, 2008	CLH	M	1,500	$12.98	$19,470	8,191 Direct	-15.48%	Disposed	4910.8% (price as of 2026-08-20)
Aug. 29, 2008	CLH	S	1,000	$82.08	$82,080	6,691 Direct	-13.00%	Disposed	692.4% (price as of 2026-08-20)
Aug. 29, 2008	CLH	M	1,000	$2.26	$2,260	7,691 Direct	+14.95%	Acquired	28678.8% (price as of 2026-08-20)
May 15, 2008	CLH	A	3,130	—	—	6,691 Direct	+87.90%	Acquired	(price as of 2026-08-20)
March 15, 2008	CLH	F	269	$63.09	$16,971	3,561 Direct	-7.02%	Disposed	930.9% (price as of 2026-08-20)
Jan. 2, 2008	CLH	F	815	—	—	3,830 Direct	-17.55%	Disposed	(price as of 2026-08-20)
Jan. 24, 2007	CLH	A	2,072	—	—	4,645 Direct	+80.53%	Acquired	(price as of 2026-08-20)
Dec. 31, 2006	CLH	F	579	$48.41	$28,029	2,573 Direct	-18.37%	Disposed	1243.5% (price as of 2026-08-20)
Sept. 27, 2006	CLH	M	2,000	$2.26	$4,520	1,000 Direct	-66.67%	Disposed	28678.8% (price as of 2026-08-20)
Sept. 27, 2006	CLH	S	2,000	$42.23	$84,460	0 Direct	-100.00%	Disposed	1440.1% (price as of 2026-08-20)
Sept. 27, 2006	CLH	M	2,000	$2.26	$4,520	2,000 Direct	—	Acquired	28678.8% (price as of 2026-08-20)
Aug. 21, 2006	CLH	M	3,000	$2.26	$6,780	3,000 Direct	-50.00%	Disposed	28678.8% (price as of 2026-08-20)
Aug. 21, 2006	CLH	M	2,000	$1.87	$3,740	0 Direct	-100.00%	Disposed	34680.7% (price as of 2026-08-20)
Aug. 21, 2006	CLH	S	3,000	$41.45	$124,350	0 Direct	-100.00%	Disposed	1469.1% (price as of 2026-08-20)
Aug. 21, 2006	CLH	M	3,000	$2.26	$6,780	3,000 Direct	—	Acquired	28678.8% (price as of 2026-08-20)
Aug. 21, 2006	CLH	S	2,000	$41.45	$82,900	0 Direct	-100.00%	Disposed	1469.1% (price as of 2026-08-20)
Aug. 21, 2006	CLH	M	2,000	$1.87	$3,740	2,000 Direct	—	Acquired	34680.7% (price as of 2026-08-20)
March 17, 2006	CLH	A	3,152	—	—	3,152 Direct	—	Acquired	(price as of 2026-08-20)
May 23, 2005	CLH	M	9,000	$2.26	$20,340	6,000 Direct	-60.00%	Disposed	28678.8% (price as of 2026-08-20)
May 23, 2005	CLH	S	9,000	$21.00	$189,000	0 Direct	-100.00%	Disposed	2997.1% (price as of 2026-08-20)
May 23, 2005	CLH	M	9,000	$2.26	$20,340	9,000 Direct	—	Acquired	28678.8% (price as of 2026-08-20)
May 18, 2005	CLH	M	8,000	$1.87	$14,960	2,000 Direct	-80.00%	Disposed	34680.7% (price as of 2026-08-20)

Showing latest 100 of 114 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
Nov. 4, 2010	CLH	Employee Stock Option	Common Stock (8,500)	$12.98	Feb. 21, 2013	8,500	Disposed
Aug. 29, 2008	CLH	Employee Stock Option	Common Stock (1,500)	$12.98	Feb. 21, 2013	1,500	Disposed
Aug. 29, 2008	CLH	Employee Stock Option	Common Stock (1,000)	$2.26	Sept. 26, 2011	1,000	Disposed
Sept. 27, 2006	CLH	Employee Stock Option	Common Stock (2,000)	$2.26	Sept. 27, 2011	2,000	Disposed
Aug. 21, 2006	CLH	Employee Stock Option	Common Stock (6,000)	$2.26	Sept. 26, 2011	3,000	Disposed
Aug. 21, 2006	CLH	Employee Stock Option	Common Stock (2,000)	$1.87	June 16, 2010	2,000	Disposed
May 23, 2005	CLH	Employee stock option	Common Stock (15,000)	$2.26	Sept. 26, 2011	9,000	Disposed
May 18, 2005	CLH	Exercise of employee stock option	Common stock (10,000)	$1.87	June 16, 2010	8,000	Disposed
April 5, 2005	CLH	employee stock option	Common Stock (3,935)	$1.81	April 27, 2008	3,935	Disposed
April 5, 2005	CLH	employee stock option	Common Stock (10,000)	$2.50	Feb. 25, 2010	10,000	Disposed
April 5, 2005	CLH	employee stock option	Common Stock (10,000)	$2.50	Feb. 25, 2010	10,000	Disposed
April 5, 2005	CLH	employee stock option	Common Stock (3,935)	$1.81	April 27, 2008	3,935	Disposed

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Compensation (DEF 14A)

Matched by name from proxy statements (DEF 14A) — verify against the filing.

CLH

Fiscal year	Salary	Bonus	Stock awards	Option awards	Non-equity incentive	Pension change	Other	Total
2016	$395,000	—	$716,315	—	—	—	$952	$1,112,267
2015	$395,000	—	$197,728	—	$70,000	—	$621	$663,349
2014	$395,000	—	$198,853	—	$245,112	—	$621	$839,586

Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.