Share Based Compensation (Tables)

9 Months Ended

Sep. 30, 2023

Schedule of Shares Issued and Fair Value of RSAs, RSUs

During the three and nine months ended September 30, 2023, the Company issued the following RSAs and RSUs pursuant to the Cambridge Bancorp 2017 Equity and Cash Incentive Plan (the “2017 Plan”). RSAs vest either over a three-year or five-year period. RSUs vest over a three-year period. The fair value of RSAs and RSUs are based upon the closing price of the Company’s common stock on the date of the applicable grant. The holders of RSAs participate fully in the rewards of stock ownership of the Company, including voting and dividend rights. The holders of RSUs do not participate in the rewards of stock ownership of the Company until they are vested.

	Three Months Ended September 30, 2023				Nine Months Ended September 30, 2023
Type of Award	Shares Granted		Weighted Average Fair Value Per Share at Grant Date		Shares Granted		Weighted Average Fair Value Per Share at Grant Date
RSAs		882	$	56.75		16,348	$	81.47
RSUs		9,693	$	56.75		28,946	$	53.94

Schedule of Pre-tax Expense Associated with All Outstanding Non-vested RSAs, RSUs, Performance Based Restricted Stock Units and Related Tax Benefits

The following table presents the pre-tax expense associated with all outstanding non-vested RSAs, RSUs, and PRSUs, and the related tax benefits recognized:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
	(dollars in thousands)
Share based compensation expense	$	589	$	697	$	1,759	$	2,288
Related tax benefits	$	164	$	195	$	491	$	639

Performance-Based Restricted Stock Units

Schedule of Shares Issued and Fair Value of RSAs, RSUs

During the three and nine months ended September 30, 2023, the Company granted PRSUs from the 2017 Plan, as shown in the table below. PRSUs are subject to a three-year performance period and are earned based on performance factors, as determined, at the time of grant.

	Three Months Ended September 30, 2023				Nine Months Ended September 30, 2023
Type of Award	Shares Granted		Weighted Average Fair Value Per Share at Grant Date		Shares Granted		Weighted Average Fair Value Per Share at Grant Date
PRSUs		—	$	—		31,744	$	59.19