George L. Duncan - Mar 15, 2022 Form 4 Insider Report for ENTERPRISE BANCORP INC /MA/ (EBTC)

Role: Chairman, Director
Signature: /s/ John P. Clancy, Jr. as attorney-in-fact for George L. Duncan
Stock symbol: EBTC
Transactions as of: Mar 15, 2022
Transactions value $: $0
Form type: 4
Date filed: 3/17/2022, 11:50 AM
Next filing: Jul 25, 2022

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	EBTC	Common Stock	Award	$0	+3.59K	+1.02%	$0.00	354K	Mar 15, 2022	Direct
holding	EBTC	Common Stock						49K	Mar 15, 2022	By Trust
holding	EBTC	Common Stock						18.4K	Mar 15, 2022	By Wife

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	+1.7K		$0.00	1.7K	Mar 15, 2022	Common Stock	1.7K	$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.