RICHARD W. MAIN - 08 Mar 2022 Form 4 Insider Report for ENTERPRISE BANCORP INC /MA/ (EBTC)

Role: President, Director
Signature: /s/ John P. Clancy, Jr. as attorney-in-fact for Richard W. Main
Issuer symbol: EBTC
Transactions as of: 08 Mar 2022
Transactions value $: $0
Form type: 4
Filing time: 17 Mar 2022, 14:59:58 UTC
Previous filing: 31 Jan 2022
Next filing: 25 Jul 2022
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	EBTC	Common Stock	Gift	$0	-2,502	-1.1%	$0	225,295	08 Mar 2022	Direct
transaction	EBTC	Common Stock	Award	$0	+1,916	+0.85%	$0	227,211	15 Mar 2022	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	EBTC	Stock Option (Right to Buy)	Award	$0	+908		$0	908	15 Mar 2022	Common Stock	908	$38.58	Direct	F1

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

Explanation of Responses:

Id	Content
F1	Options vest 50% on the second anniversary date of the grant and 50% on the fourth anniversary date of the grant. The first installment vests on March 15, 2024.