CLEAN HARBORS INC

Ticker: CLH CUSIP: 184496107 Class: EQTY

WESTFIELD CAPITAL MANAGEMENT CO LP's Holding History (CIK: 0001177719)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 245,594 Value ($000) $57,587 Avg Close $228.49 Range $201.34 - $248.07

Q3 2025

Shares 243,582 Value ($000) $56,565 Avg Close $236.75 Range $218.46 - $251.43

Q2 2025

Shares 192,259 Value ($000) $44,446 Avg Close $218.92 Range $178.29 - $235.43

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	245,594	$57,587	$228.49	$201.34 - $248.07
Q3 2025	243,582	$56,565	$236.75	$218.46 - $251.43
Q2 2025	192,259	$44,446	$218.92	$178.29 - $235.43