ARCH CAP GROUP LTD

Ticker: ACGL CUSIP: G0450A105 Class: COM

Chesley Taft & Associates LLC's Holding History (CIK: 0001164632)

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

Q1 2020

Shares 10,305 Value ($000) $293 Avg Close $38.54 Range $21.43 - $45.95

Q4 2019

Shares 10,430 Value ($000) $447 Avg Close $39.45 Range $38.15 - $40.92

Q3 2019

Shares 10,430 Value ($000) $438 Avg Close $37.49 Range $35.20 - $40.76

Q2 2019

Shares 10,670 Value ($000) $396 Avg Close $32.43 Range $30.49 - $35.41

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2020	10,305	$293	$38.54	$21.43 - $45.95
Q4 2019	10,430	$447	$39.45	$38.15 - $40.92
Q3 2019	10,430	$438	$37.49	$35.20 - $40.76
Q2 2019	10,670	$396	$32.43	$30.49 - $35.41