Ryan C. Dunn - Mar 15, 2022 Form 4 Insider Report for ENTERPRISE BANCORP INC /MA/ (EBTC)

Role: EVP-Principal Subsidiary
Signature: /s/ John P. Clancy, attorney-in-fact for Ryan C. Dunn
Stock symbol: EBTC
Transactions as of: Mar 15, 2022
Transactions value $: $0
Form type: 4
Date filed: 3/17/2022, 11:55 AM
Previous filing: Feb 16, 2022
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	+826	+11.79%	$0.00	7.83K	Mar 15, 2022	Direct	F1
holding	EBTC	Common Stock						42.4	Mar 15, 2022	By Children	F2

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	+391		$0.00	391	Mar 15, 2022	Common Stock	391	$38.58	Direct	F3

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

Explanation of Responses:

Id	Content
F1	Includes 37.8245 shares acquired through dividend reinvestment on 3/1/22.
F2	Includes .2223 shares acquired through the dividend reinvestment plan on 3/1/22.
F3	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.