KEROS THERAPEUTICS INC

Ticker: KROS CUSIP: 492327101 Class: Common Stock

Foresite Capital Management IV, LLC's Holding History (CIK: 0001704132)

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

Q1 2021

Shares 1,382,641 Value ($000) $85,102 Avg Close $63.36 Range $51.48 - $75.99

Q4 2020

Shares 1,412,705 Value ($000) $99,652 Avg Close $63.02 Range $34.17 - $88.80

Q3 2020

Shares 1,412,705 Value ($000) $54,488 Avg Close $39.66 Range $25.71 - $65.50

Q2 2020

Shares 1,428,071 Value ($000) $53,567 Avg Close $30.81 Range $19.10 - $42.26

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2021	1,382,641	$85,102	$63.36	$51.48 - $75.99
Q4 2020	1,412,705	$99,652	$63.02	$34.17 - $88.80
Q3 2020	1,412,705	$54,488	$39.66	$25.71 - $65.50
Q2 2020	1,428,071	$53,567	$30.81	$19.10 - $42.26