MSA SAFETY INC

Ticker: MSA CUSIP: 553498106 Class: Com

Aperio Group, LLC's Holding History (CIK: 0001364615)

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

Q4 2020

Shares 11,619 Value ($000) $1,736 Avg Close $144.38 Range $124.58 - $155.47

Q3 2020

Shares 11,384 Value ($000) $1,527 Avg Close $122.44 Range $108.35 - $135.47

Q2 2020

Shares 11,998 Value ($000) $1,373 Avg Close $111.17 Range $88.18 - $126.16

Q1 2020

Shares 12,201 Value ($000) $1,235 Avg Close $125.88 Range $83.57 - $142.34

Q4 2019

Shares 9,622 Value ($000) $1,216 Avg Close $120.34 Range $104.14 - $128.18

Q3 2019

Shares 11,023 Value ($000) $1,203 Avg Close $105.47 Range $98.71 - $114.64

Q2 2019

Shares 11,857 Value ($000) $1,250 Avg Close $105.05 Range $96.01 - $113.06

Q1 2019

Shares 12,043 Value ($000) $1,245 Avg Close $100.71 Range $90.81 - $105.37

Q4 2018

Shares 11,999 Value ($000) $1,131 Avg Close $102.10 Range $86.72 - $110.83

Q3 2018

Shares 11,534 Value ($000) $1,228 Avg Close $100.99 Range $91.22 - $108.86

Q2 2018

Shares 10,433 Value ($000) $1,005 Avg Close $90.37 Range $80.86 - $97.36

Q1 2018

Shares 10,464 Value ($000) $871 Avg Close $80.24 Range $71.47 - $87.31

Q4 2017

Shares 11,678 Value ($000) $905 Avg Close $79.81 Range $75.79 - $86.36

Q3 2017

Shares 11,836 Value ($000) $941 Avg Close $74.83 Range $65.95 - $81.88

Q2 2017

Shares 10,809 Value ($000) $877 Avg Close $77.51 Range $66.78 - $84.86

Q1 2017

Shares 10,401 Value ($000) $735 Avg Close $69.85 Range $66.47 - $74.64

Q4 2016

Shares 10,218 Value ($000) $708 Avg Close $61.85 Range $55.00 - $71.28

Q3 2016

Shares 11,392 Value ($000) $661 Avg Close $55.92 Range $51.25 - $58.62

Q2 2016

Shares 9,567 Value ($000) $503 Avg Close $49.54 Range $44.16 - $54.70

Q1 2016

Shares 9,542 Value ($000) $461 Avg Close $43.17 Range $37.68 - $49.77

Q4 2015

Shares 5,383 Value ($000) $234 Avg Close $43.83 Range $39.17 - $47.46

Q2 2015

Shares 5,340 Value ($000) $259 Avg Close $47.96 Range $43.43 - $52.59

Q1 2015

Shares 4,545 Value ($000) $227 Avg Close $48.32 Range $43.12 - $53.64

Q4 2014

Shares 4,414 Value ($000) $234 Avg Close $52.89 Range $46.25 - $58.99

Q3 2014

Shares 4,744 Value ($000) $234 Avg Close $55.35 Range $49.37 - $61.08

Q2 2014

Shares 4,734 Value ($000) $272 Avg Close $54.84 Range $49.85 - $58.90

Q1 2014

Shares 4,734 Value ($000) $270 Avg Close $52.42 Range $46.50 - $57.94

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2020	11,619	$1,736	$144.38	$124.58 - $155.47
Q3 2020	11,384	$1,527	$122.44	$108.35 - $135.47
Q2 2020	11,998	$1,373	$111.17	$88.18 - $126.16
Q1 2020	12,201	$1,235	$125.88	$83.57 - $142.34
Q4 2019	9,622	$1,216	$120.34	$104.14 - $128.18
Q3 2019	11,023	$1,203	$105.47	$98.71 - $114.64
Q2 2019	11,857	$1,250	$105.05	$96.01 - $113.06
Q1 2019	12,043	$1,245	$100.71	$90.81 - $105.37
Q4 2018	11,999	$1,131	$102.10	$86.72 - $110.83
Q3 2018	11,534	$1,228	$100.99	$91.22 - $108.86
Q2 2018	10,433	$1,005	$90.37	$80.86 - $97.36
Q1 2018	10,464	$871	$80.24	$71.47 - $87.31
Q4 2017	11,678	$905	$79.81	$75.79 - $86.36
Q3 2017	11,836	$941	$74.83	$65.95 - $81.88
Q2 2017	10,809	$877	$77.51	$66.78 - $84.86
Q1 2017	10,401	$735	$69.85	$66.47 - $74.64
Q4 2016	10,218	$708	$61.85	$55.00 - $71.28
Q3 2016	11,392	$661	$55.92	$51.25 - $58.62
Q2 2016	9,567	$503	$49.54	$44.16 - $54.70
Q1 2016	9,542	$461	$43.17	$37.68 - $49.77
Q4 2015	5,383	$234	$43.83	$39.17 - $47.46
Q2 2015	5,340	$259	$47.96	$43.43 - $52.59
Q1 2015	4,545	$227	$48.32	$43.12 - $53.64
Q4 2014	4,414	$234	$52.89	$46.25 - $58.99
Q3 2014	4,744	$234	$55.35	$49.37 - $61.08
Q2 2014	4,734	$272	$54.84	$49.85 - $58.90
Q1 2014	4,734	$270	$52.42	$46.50 - $57.94