MICHAEL JOHN GALLAGHER - 15 Mar 2022 Form 4 Insider Report for ENTERPRISE BANCORP INC /MA/ (EBTC)

Role: EVP-Principal Subsidiary
Signature: /s/ John P. Clancy, Jr. as attorney-in-fact for Michael John Gallagher
Issuer symbol: EBTC
Transactions as of: 15 Mar 2022
Net transactions value: $0
Form type: 4
Filing time: 17 Mar 2022, 12:57:41 UTC
Previous filing: 31 Jan 2022
Next filing: 28 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	+43%	$0.000000	2,730	15 Mar 2022	Direct	F1, F2
holding	EBTC	Common Stock						9,520	15 Mar 2022	By Trust	F3

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	F4

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

Explanation of Responses:

Id	Content
F1	Includes 6.0455 shares acquired through the Issuer's Dividend Reinvestment Plan on 3/1/2022.
F2	Includes 2.0578 shares acquired through the Issuer's Employee Stock Purchase Plan on 3/4/2022.
F3	Includes 49.9596 shares acquired through the Issuer's Dividend Reinvestment Plan on 3/1/2022.
F4	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.