Michael R. Bristow - Dec 14, 2021 Form 4 Insider Report for ARCA biopharma, Inc. (ABIO)

Role: Pres. & Chief Executive Offic, Director
Signature: /s/ C. Jeffrey Dekker, Attorney-in-Fact
Stock symbol: ABIO
Transactions as of: Dec 14, 2021
Transactions value $: $0
Form type: 4
Date filed: 12/16/2021, 03:31 PM

Transactions Table

Type	Sym	Class	Shares After	Date	Ownership
holding	ABIO	Common Stock	1.11K	Dec 14, 2021	By InvestocorTrust as sole Trustee
holding	ABIO	Common Stock	1.41K	Dec 14, 2021	By NFS Custodian for Michael Bristow's IRA
holding	ABIO	Common Stock	2.29K	Dec 14, 2021	Direct

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	ABIO	Stock Option (right to buy)	Award	$0	+95K		$0.00	95K	Dec 14, 2021	Common Stock	95K	$2.29	Direct	F1

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

Explanation of Responses:

Id	Content
F1	Grant to the Reporting Person of a stock option under the 2020 Equity Incentive Plan (the Plan), vesting in 36 equal monthly installments from the date of grant, provided that the Reporting Person's continuous service to the Issuer has not been terminated as defined in or as determined under the Plan prior to such time. In the event of a change in control of the Issuer, 50% of the unvested options shall become fully and immediately vested upon the closing date of such change in control, provided, however, that on the earlier of (i) the one-year anniversary of the closing date or (ii) involuntary termination, any options that remain unvested on such earlier date shall become fully and immediately vested.

Content

Grant to the Reporting Person of a stock option under the 2020 Equity Incentive Plan (the Plan), vesting in 36 equal monthly installments from the date of grant, provided that the Reporting Person's continuous service to the Issuer has not been terminated as defined in or as determined under the Plan prior to such time. In the event of a change in control of the Issuer, 50% of the unvested options shall become fully and immediately vested upon the closing date of such change in control, provided, however, that on the earlier of (i) the one-year anniversary of the closing date or (ii) involuntary termination, any options that remain unvested on such earlier date shall become fully and immediately vested.