Shareholders' Equity (Tables)

3 Months Ended

Mar. 31, 2021

Table of Actual Regulatory Capital Amounts and Ratios

The following table provides Trustmark’s and TNB’s actual regulatory capital amounts and ratios under regulatory capital standards in effect at March 31, 2021 and December 31, 2020 ($ in thousands):

	Actual
	Regulatory Capital					Minimum			To Be Well
	Amount		Ratio			Requirement			Capitalized
At March 31, 2021:
Common Equity Tier 1 Capital (to Risk Weighted Assets)
Trustmark Corporation	$	1,427,077		11.71	%		7.00	%	n/a
Trustmark National Bank		1,446,395		11.87	%		7.00	%		6.50	%

Tier 1 Capital (to Risk Weighted Assets)
Trustmark Corporation	$	1,487,077		12.20	%		8.50	%	n/a
Trustmark National Bank		1,446,395		11.87	%		8.50	%		8.00	%

Total Capital (to Risk Weighted Assets)
Trustmark Corporation	$	1,714,872		14.07	%		10.50	%	n/a
Trustmark National Bank		1,551,313		12.73	%		10.50	%		10.00	%

Tier 1 Leverage (to Average Assets)
Trustmark Corporation	$	1,487,077		9.11	%		4.00	%	n/a
Trustmark National Bank		1,446,395		8.87	%		4.00	%		5.00	%

At December 31, 2020:
Common Equity Tier 1 Capital (to Risk Weighted Assets)
Trustmark Corporation	$	1,395,844		11.62	%		7.00	%	n/a
Trustmark National Bank		1,412,015		11.75	%		7.00	%		6.50	%

Tier 1 Capital (to Risk Weighted Assets)
Trustmark Corporation	$	1,455,844		12.11	%		8.50	%	n/a
Trustmark National Bank		1,412,015		11.75	%		8.50	%		8.00	%

Total Capital (to Risk Weighted Assets)
Trustmark Corporation	$	1,696,794		14.12	%		10.50	%	n/a
Trustmark National Bank		1,530,044		12.73	%		10.50	%		10.00	%

Tier 1 Leverage (to Average Assets)
Trustmark Corporation	$	1,455,844		9.33	%		4.00	%	n/a
Trustmark National Bank		1,412,015		9.07	%		4.00	%		5.00	%

Net Change in Components of Accumulated Other Comprehensive Income (Loss) and the Related Tax Effects

	Three Months Ended March 31, 2021									Three Months Ended March 31, 2020
	Before Tax Amount			Tax (Expense) Benefit			Net of Tax Amount			Before Tax Amount		Tax (Expense) Benefit			Net of Tax Amount
Securities available for sale and transferred securities:
Net unrealized holding gains (losses) arising during the period	$	(21,800	)	$	5,450		$	(16,350	)	$	40,507	$	(10,127	)	$	30,380
Change in net unrealized holding loss on securities transferred to held to maturity		711			(178	)		533			861		(215	)		646
Total securities available for sale and transferred securities		(21,089	)		5,272			(15,817	)		41,368		(10,342	)		31,026
Pension and other postretirement benefit plans:
Reclassification adjustments for changes realized in net income:
Net change in prior service costs		28			(7	)		21			37		(9	)		28
Recognized net loss due to lump sum settlements		—			—			—			—		—			—
Change in net actuarial loss		455			(114	)		341			326		(82	)		244
Total pension and other postretirement benefit plans		483			(121	)		362			363		(91	)		272
Total other comprehensive income (loss)	$	(20,606	)	$	5,151		$	(15,455	)	$	41,731	$	(10,433	)	$	31,298

Components of Reclassifications Out of Accumulated Other Comprehensive Income (Loss)

The following table presents the changes in the balances of each component of accumulated other comprehensive income (loss) for the periods presented ($ in thousands). All amounts are presented net of tax.

	Securities Available for Sale and Transferred Securities			Defined Benefit Pension Items			Total
Balance at January 1, 2021	$	17,331		$	(18,382	)	$	(1,051	)
Other comprehensive income (loss) before reclassification		(15,817	)		—			(15,817	)
Amounts reclassified from accumulated other comprehensive income (loss)		—			362			362
Net other comprehensive income (loss)		(15,817	)		362			(15,455	)
Balance at March 31, 2021	$	1,514		$	(18,020	)	$	(16,506	)

Balance at January 1, 2020	$	(8,017	)	$	(15,583	)	$	(23,600	)
Other comprehensive income (loss) before reclassification		31,026			—			31,026
Amounts reclassified from accumulated other comprehensive income (loss)		—			272			272
Net other comprehensive income (loss)		31,026			272			31,298
Balance at March 31, 2020	$	23,009		$	(15,311	)	$	7,698