GIBRALTAR INDS INC

Ticker: ROCK CUSIP: 374689107 Class: EQTY

CASTLEARK MANAGEMENT LLC's Holding History (CIK: 0001106832)

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

Q1 2021

Shares 107,484 Value ($000) $9,836 Avg Close $91.76 Range $73.29 - $103.02

Q4 2020

Shares 102,409 Value ($000) $7,367 Avg Close $66.77 Range $56.97 - $74.00

Q3 2020

Shares 153,298 Value ($000) $9,986 Avg Close $59.00 Range $45.82 - $69.64

Q2 2020

Shares 153,134 Value ($000) $7,352 Avg Close $44.46 Range $36.39 - $53.45

Q1 2020

Shares 145,245 Value ($000) $6,234 Avg Close $50.01 Range $30.60 - $56.58

Q4 2019

Shares 84,955 Value ($000) $4,285 Avg Close $50.22 Range $43.51 - $55.16

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2021	107,484	$9,836	$91.76	$73.29 - $103.02
Q4 2020	102,409	$7,367	$66.77	$56.97 - $74.00
Q3 2020	153,298	$9,986	$59.00	$45.82 - $69.64
Q2 2020	153,134	$7,352	$44.46	$36.39 - $53.45
Q1 2020	145,245	$6,234	$50.01	$30.60 - $56.58
Q4 2019	84,955	$4,285	$50.22	$43.51 - $55.16