RYAN C. DUNN - 15 Mar 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
Issuer symbol: EBTC
Transactions as of: 15 Mar 2022
Net transactions value: $0
Form type: 4
Filing time: 17 Mar 2022, 11:55:29 UTC
Previous filing: 16 Feb 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	Award	$0	+826	+12%	$0.000000	7,834	15 Mar 2022	Direct	F1
holding	EBTC	Common Stock						42	15 Mar 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		$0.000000	391	15 Mar 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.