GIBRALTAR INDS INC

Ticker: ROCK CUSIP: 374689107 Class: EQTY

Municipal Employees' Retirement System of Michigan's Holding History (CIK: 0001588873)

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

Q1 2020

Shares 10,000 Value ($000) $429 Avg Close $50.01 Range $30.60 - $56.58

Q4 2019

Shares 9,860 Value ($000) $497 Avg Close $50.22 Range $43.51 - $55.16

Q3 2019

Shares 9,700 Value ($000) $446 Avg Close $41.86 Range $38.79 - $47.23

Q2 2019

Shares 9,560 Value ($000) $386 Avg Close $38.87 Range $35.29 - $41.82

Q1 2019

Shares 11,870 Value ($000) $482 Avg Close $38.15 Range $33.42 - $43.48

Q4 2018

Shares 11,720 Value ($000) $417 Avg Close $36.48 Range $31.96 - $46.61

Q2 2018

Shares 12,220 Value ($000) $459 Avg Close $37.15 Range $32.60 - $40.70

Q1 2018

Shares 16,880 Value ($000) $571 Avg Close $34.72 Range $30.06 - $38.80

Q4 2017

Shares 16,050 Value ($000) $530 Avg Close $31.95 Range $29.50 - $34.20

Q3 2017

Shares 11,850 Value ($000) $369 Avg Close $30.18 Range $25.61 - $36.08

Q2 2017

Shares 7,460 Value ($000) $266 Avg Close $35.29 Range $30.40 - $41.40

Q1 2017

Shares 9,860 Value ($000) $407 Avg Close $41.84 Range $38.55 - $45.05

Q4 2016

Shares 9,750 Value ($000) $406 Avg Close $41.33 Range $34.54 - $48.05

Q3 2016

Shares 38,240 Value ($000) $1,421 Avg Close $36.62 Range $31.35 - $40.00

Q2 2016

Shares 38,120 Value ($000) $1,204 Avg Close $28.78 Range $24.12 - $32.46

Q1 2016

Shares 10,370 Value ($000) $296 Avg Close $23.31 Range $18.23 - $28.75

Q4 2015

Shares 5,950 Value ($000) $151 Avg Close $23.97 Range $17.79 - $27.89

Q3 2015

Shares 5,690 Value ($000) $104 Avg Close $18.32 Range $15.94 - $21.49

Q2 2015

Shares 5,540 Value ($000) $113 Avg Close $18.15 Range $15.75 - $21.38

Q1 2015

Shares 5,500 Value ($000) $90 Avg Close $15.46 Range $13.44 - $17.22

Q4 2014

Shares 35,500 Value ($000) $577 Avg Close $14.79 Range $12.65 - $16.65

Q3 2014

Shares 7,400 Value ($000) $101 Avg Close $15.33 Range $13.65 - $16.49

Q2 2014

Shares 7,000 Value ($000) $109 Avg Close $16.58 Range $14.50 - $19.01

Q1 2014

Shares 7,000 Value ($000) $132 Avg Close $18.13 Range $16.87 - $19.23

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2020	10,000	$429	$50.01	$30.60 - $56.58
Q4 2019	9,860	$497	$50.22	$43.51 - $55.16
Q3 2019	9,700	$446	$41.86	$38.79 - $47.23
Q2 2019	9,560	$386	$38.87	$35.29 - $41.82
Q1 2019	11,870	$482	$38.15	$33.42 - $43.48
Q4 2018	11,720	$417	$36.48	$31.96 - $46.61
Q2 2018	12,220	$459	$37.15	$32.60 - $40.70
Q1 2018	16,880	$571	$34.72	$30.06 - $38.80
Q4 2017	16,050	$530	$31.95	$29.50 - $34.20
Q3 2017	11,850	$369	$30.18	$25.61 - $36.08
Q2 2017	7,460	$266	$35.29	$30.40 - $41.40
Q1 2017	9,860	$407	$41.84	$38.55 - $45.05
Q4 2016	9,750	$406	$41.33	$34.54 - $48.05
Q3 2016	38,240	$1,421	$36.62	$31.35 - $40.00
Q2 2016	38,120	$1,204	$28.78	$24.12 - $32.46
Q1 2016	10,370	$296	$23.31	$18.23 - $28.75
Q4 2015	5,950	$151	$23.97	$17.79 - $27.89
Q3 2015	5,690	$104	$18.32	$15.94 - $21.49
Q2 2015	5,540	$113	$18.15	$15.75 - $21.38
Q1 2015	5,500	$90	$15.46	$13.44 - $17.22
Q4 2014	35,500	$577	$14.79	$12.65 - $16.65
Q3 2014	7,400	$101	$15.33	$13.65 - $16.49
Q2 2014	7,000	$109	$16.58	$14.50 - $19.01
Q1 2014	7,000	$132	$18.13	$16.87 - $19.23