ADC THERAPEUTICS SA

Ticker: ADCT CUSIP: H0036K147 Class: Foreign Stock

FRONTIER CAPITAL MANAGEMENT CO LLC's Holding History (CIK: 0000351173)

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

Q1 2021

Shares 78,137 Value ($000) $1,907 Avg Close $28.97 Range $21.51 - $34.48

Q4 2020

Shares 252,882 Value ($000) $8,095 Avg Close $32.77 Range $25.11 - $38.34

Q3 2020

Shares 190,421 Value ($000) $6,282 Avg Close $43.28 Range $31.70 - $56.59

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2021	78,137	$1,907	$28.97	$21.51 - $34.48
Q4 2020	252,882	$8,095	$32.77	$25.11 - $38.34
Q3 2020	190,421	$6,282	$43.28	$31.70 - $56.59