Note 9 – Defined Benefit and Other Postretirement Benefits

Qualified Pension Plans

Trustmark maintains a noncontributory tax-qualified defined benefit pension plan (Trustmark Capital Accumulation Plan), in which substantially all associates who began employment prior to 2007 participate. The plan provides retirement benefits that are based on the length of credited service and final average compensation, as defined in the plan, and vest upon three years of service. Benefit accruals under the plan have been frozen since 2009, with the exception of certain associates covered through plans obtained in acquisitions that were subsequently merged into the Trustmark plan. Other than the associates covered through these acquired plans that were merged into the Trustmark plan, associates have not earned additional benefits, except for interest as required by law, since the plan was frozen. Current and former associates who participate in the plan retain their right to receive benefits that accrued before the plan was frozen.

The following table presents information regarding the net periodic benefit cost for Trustmark’s qualified defined benefit pension plan for the periods presented ($ in thousands):

	Three Months Ended March 31,
	2016			2015
Service cost	$	108		$	131
Interest cost		830			862
Expected return on plan assets		(1,022	)		(1,296	)
Recognized net loss due to lump sum settlements		423			417
Recognized net actuarial loss		661			967
Net periodic benefit cost	$	1,000		$	1,081

The range of potential contributions to the Trustmark Capital Accumulation Plan is determined annually by the plan’s actuary in accordance with applicable IRS rules and regulations. Trustmark’s policy is to fund amounts that are sufficient to satisfy the annual minimum funding requirements and do not exceed the maximum that is deductible for federal income tax purposes. The actual amount of the contribution is determined annually based on the plan’s funded status and return on plan assets as of the measurement date, which is December 31. For the plan year ending December 31, 2016, Trustmark’s minimum required contribution to the Trustmark Capital Accumulation Plan is expected to be zero; however, Management and the Board of Directors of Trustmark will monitor the plan throughout 2016 to determine any additional funding requirements by the plan’s measurement date.

Supplemental Retirement Plans

Trustmark maintains a nonqualified supplemental retirement plan covering key executive officers and senior officers as well as directors who have elected to defer fees. The plan provides for retirement and/or death benefits based on a participant’s covered salary or deferred fees. Although plan benefits may be paid from Trustmark’s general assets, Trustmark has purchased life insurance contracts on the participants covered under the plan, which may be used to fund future benefit payments under the plan. The measurement date for the plan is December 31. As a result of the BancTrust merger on February 15, 2013, Trustmark became the administrator of an additional nonqualified supplemental retirement plan, for which the plan benefits were frozen prior to the merger date.

The following table presents information regarding the net periodic benefit cost for Trustmark’s nonqualified supplemental retirement plans for the periods presented ($ in thousands):

	Three Months Ended March 31,
	2016		2015
Service cost	$	74	$	108
Interest cost		546		524
Amortization of prior service cost		63		63
Recognized net actuarial loss		221		253
Net periodic benefit cost	$	904	$	948