Thomas J Shields

Insider

First SEC filing: June 5, 2020 · Latest: June 5, 2020

On this page

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.

Insider at

CLH selling Dec. 8, 2016

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 33 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

33 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
May 25, 2022	CLH	A	1,849	—	—	28,762 Direct	+6.87%	Acquired	(price as of 2026-08-20)
Jan. 3, 2022	CLH	A	257	—	—	26,913 Direct	+0.96%	Acquired	(price as of 2026-08-20)
June 3, 2021	CLH	A	1,513	—	—	26,656 Direct	+6.02%	Acquired	(price as of 2026-08-20)
June 3, 2020	CLH	A	2,168	—	—	25,143 Direct	+9.44%	Acquired	(price as of 2026-08-20)
June 5, 2019	CLH	A	2,095	—	—	22,975 Direct	+10.03%	Acquired	(price as of 2026-08-20)
June 6, 2018	CLH	A	2,236	—	—	20,880 Direct	+11.99%	Acquired	(price as of 2026-08-20)
June 7, 2017	CLH	A	2,057	—	—	18,644 Direct	+12.40%	Acquired	(price as of 2026-08-20)
Dec. 8, 2016	CLH	M	12,000	$33.09	$397,080	0 Direct	-100.00%	Disposed	882.8% (price as of 2026-08-20)
Dec. 8, 2016	CLH	S	12,000	$54.47	$653,640	16,587 Direct	-41.98%	Disposed	497.0% (price as of 2026-08-20)
Dec. 8, 2016	CLH	M	12,000	$33.09	$397,080	28,587 Direct	+72.35%	Acquired	882.8% (price as of 2026-08-20)
June 8, 2016	CLH	A	2,210	—	—	16,587 Direct	+15.37%	Acquired	(price as of 2026-08-20)
June 10, 2015	CLH	A	1,786	—	—	14,377 Direct	+14.18%	Acquired	(price as of 2026-08-20)
May 27, 2015	CLH	S	5,000	$56.93	$284,650	12,591 Direct	-28.42%	Disposed	471.2% (price as of 2026-08-20)
June 18, 2014	CLH	A	1,608	—	—	17,591 Direct	+10.06%	Acquired	(price as of 2026-08-20)
June 10, 2014	CLH	S	1,000	$63.08	$63,080	15,983 Direct	-5.89%	Disposed	415.5% (price as of 2026-08-20)
June 10, 2014	CLH	S	4,248	$63.02	$267,709	16,983 Direct	-20.01%	Disposed	416.0% (price as of 2026-08-20)
Oct. 1, 2013	CLH	A	249	$58.60	$14,591	21,231 Direct	+1.19%	Acquired	454.9% (price as of 2026-08-20)
May 6, 2013	CLH	A	1,334	—	—	20,982 Direct	+6.79%	Acquired	(price as of 2026-08-20)
May 7, 2012	CLH	A	1,140	—	—	19,648 Direct	+6.16%	Acquired	(price as of 2026-08-20)
May 9, 2011	CLH	A	767	—	—	9,254 Direct	+9.04%	Acquired	(price as of 2026-08-20)
May 10, 2010	CLH	M	6,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
May 10, 2010	CLH	S	6,000	$62.24	$373,440	8,487 Direct	-41.42%	Disposed	945.0% (price as of 2026-08-20)
May 10, 2010	CLH	M	6,000	$18.97	$113,820	14,487 Direct	+70.70%	Acquired	3328.6% (price as of 2026-08-20)
May 10, 2010	CLH	A	787	—	—	8,487 Direct	+10.22%	Acquired	(price as of 2026-08-20)
June 12, 2009	CLH	A	300	—	—	7,700 Direct	-3.75%	Disposed	(price as of 2026-08-20)
May 15, 2008	CLH	A	300	—	—	7,400 Direct	+4.23%	Acquired	(price as of 2026-08-20)
May 15, 2008	CLH	A	6,000	—	—	6,000 Direct	—	Acquired	(price as of 2026-08-20)
May 18, 2007	CLH	A	300	—	—	7,100 Direct	+4.41%	Acquired	(price as of 2026-08-20)
April 9, 2007	CLH	M	3,000	$10.75	$32,250	0 Direct	-100.00%	Disposed	5950.2% (price as of 2026-08-20)
April 9, 2007	CLH	M	3,000	$10.75	$32,250	0 Direct	-100.00%	Disposed	5950.2% (price as of 2026-08-20)
April 9, 2007	CLH	M	6,000	$10.75	$64,500	6,800 Direct	+750.00%	Acquired	5950.2% (price as of 2026-08-20)
Sept. 20, 2006	CLH	A	300	—	—	800 Direct	+60.00%	Acquired	(price as of 2026-08-20)
Aug. 23, 2004	CLH	M	3,550	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Aug. 23, 2004	CLH	S	3,550	$10.92	$38,766	500 Direct	-87.65%	Disposed	5856.0% (price as of 2026-08-20)
Aug. 23, 2004	CLH	M	3,550	$1.87	$6,638	4,050 Direct	+710.00%	Acquired	34680.7% (price as of 2026-08-20)
Aug. 20, 2004	CLH	M	6,450	—	—	3,550 Direct	-64.50%	Disposed	(price as of 2026-08-20)
Aug. 20, 2004	CLH	M	2,750	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Aug. 20, 2004	CLH	S	6,450	$10.96	$70,692	500 Direct	-92.81%	Disposed	5834.3% (price as of 2026-08-20)
Aug. 20, 2004	CLH	M	6,450	$1.87	$12,062	6,950 Direct	+1290.00%	Acquired	34680.7% (price as of 2026-08-20)
Aug. 20, 2004	CLH	S	2,750	$10.96	$30,140	500 Direct	-84.62%	Disposed	5834.3% (price as of 2026-08-20)
Aug. 20, 2004	CLH	M	2,750	$1.50	$4,125	3,250 Direct	+550.00%	Acquired	43260.0% (price as of 2026-08-20)

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
Dec. 8, 2016	CLH	Stock Option Right to Buy	Common Stock (12,000)	$33.09	May 15, 2018	12,000	Disposed
May 10, 2010	CLH	Common Stock	Common Stock (6,000)	$18.97	May 12, 2010	6,000	Disposed
May 15, 2008	CLH	Non-Employee Director stock option	Common Stock (6,000)	$66.18	May 15, 2018	6,000	Acquired
April 9, 2007	CLH	Stock Option	Common Stock (3,000)	$10.75	April 24, 2007	3,000	Disposed
April 9, 2007	CLH	Stock Option	Common Stock (3,000)	$10.75	April 24, 2007	3,000	Disposed
Aug. 23, 2004	CLH	Stock option-right to buy	Common Stock (3,550)	$1.87	June 16, 2005	3,550	Disposed
Aug. 20, 2004	CLH	Stock Option-right to buy	Common Stock (6,450)	$1.87	June 16, 2005	6,450	Disposed
Aug. 20, 2004	CLH	Stock Option-right to buy	Common Stock (2,750)	$1.50	Sept. 22, 2004	2,750	Disposed

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