Christopher Rovaldi - 06 Apr 2022 Form 4 Insider Report for Keros Therapeutics, Inc. (KROS)

Role: Chief Operating Officer
Signature: /s/ Esther Cho, Attorney-in-Fact
Issuer symbol: KROS
Transactions as of: 06 Apr 2022
Net transactions value: -$84,672
Form type: 4
Filing time: 08 Apr 2022, 16:21:01 UTC
Previous filing: 05 Apr 2022
Next filing: 17 Feb 2023
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	KROS	Common Stock	Options Exercise	$27,648	+1,728		$16.00	1,728	06 Apr 2022	Direct
transaction	KROS	Common Stock	Sale	$112,320	-1,728	-100%	$65.00	0	06 Apr 2022	Direct	F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	KROS	Employee Stock Option (right to buy)	Options Exercise	$0	-1,728	-18%	$0.000000	8,002	06 Apr 2022	Common Stock	1,728	$16.00	Direct	F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.
F2	One-fourth (1/4th) of the shares subject to the option vested on January 1, 2021, and one-twelfth (1/12th) of the remaining shares subject to the option shall vest in equal quarterly installments thereafter, subject to the Reporting Person continuing to provide service through each such date.