Michael R Mcdonald

Insider

First SEC filing: Jan. 5, 2009 · Latest: Jan. 5, 2009

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Insider at

0 buys (P) 0 sells (S) Net: $0 + 4 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

4 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
June 20, 2011	CLH	A	600	—	—	2,983 Direct	+25.18%	Acquired	(price as of 2026-08-20)
April 11, 2011	CLH	S	1,000	$101.23	$101,230	2,383 Direct	-29.56%	Disposed	542.5% (price as of 2026-08-20)
March 15, 2011	CLH	F	490	$95.29	$46,692	3,383 Direct	-12.65%	Disposed	582.5% (price as of 2026-08-20)
April 20, 2010	CLH	A	1,936	—	—	3,873 Direct	+99.95%	Acquired	(price as of 2026-08-20)
March 18, 2009	CLH	A	1,737	—	—	1,937 Direct	+868.50%	Acquired	(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.

Securities held when first becoming an insider, per SEC Form 3.

Date	Ticker	Security	Shares	Ownership
Jan. 5, 2009	CLH	Common Stock	200	Direct