Note 10 – Defined Benefit and Other Postretirement Benefits

Qualified Pension Plans

Trustmark maintained a noncontributory tax-qualified defined benefit pension plan (Trustmark Capital Accumulation Plan, the “Plan”), in which substantially all associates who began employment prior to 2007 participated. The Plan provided for retirement benefits based on the length of credited service and final average compensation, as defined in the Plan, which vested upon three years of service. Benefit accruals under the Plan were frozen in 2009, with the exception of certain associates covered through plans obtained in acquisitions that were subsequently merged into the Plan. Other than the associates covered through these acquired plans that were merged into the 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.

As previously reported, on July 26, 2016, the Board of Directors of Trustmark authorized the termination of the Plan, effective as of December 31, 2016. To satisfy commitments made by Trustmark to associates (collectively, the “Continuing Associates”) covered through acquired plans that were merged into the Plan, the Board also approved the spin-off of the portion of the Plan associated with the accrued benefits of the Continuing Associates into a new plan titled the Trustmark Corporation Pension Plan for Certain Employees of Acquired Financial Institutions (the “Spin-Off Plan”), effective as of December 31, 2016, immediately prior to the termination of the Plan.

In order to terminate the Plan, in accordance with Internal Revenue Service (IRS) and Pension Benefit Guaranty Corporation requirements, Trustmark is required to fully fund the Plan on a termination basis and will contribute the additional assets necessary to do so. The final distributions will be made from current plan assets and a one-time pension settlement expense will be recognized when paid by Trustmark during the second quarter of 2017. Participants in the Plan will have a choice of receiving a lump sum cash payment or annuity payments under a group annuity contract purchased from an insurance carrier, subject to certain exceptions. As a result of the termination of the Plan, each participant will become fully vested in his or her accrued benefits under the Plan.

The Board reserved the right to defer or revoke the termination of the Plan if circumstances change such that deferral or revocation would be warranted, but has no intent to do so at this time.

The following table presents information regarding the net periodic benefit cost for the Plan and the Spin-Off Plan for the periods presented ($ in thousands):

	Three Months Ended March 31,
	2017			2016
Service cost	$	63		$	108
Interest cost		665			830
Expected return on plan assets		(108	)		(1,022	)
Recognized net loss due to lump sum settlements		—			423
Recognized net actuarial loss		565			661
Net periodic benefit cost	$	1,185		$	1,000

Since the Plan was terminated, there will be no additional contributions required in the future other than amounts necessary to facilitate the plan termination. For the plan year ending December 31, 2017, Trustmark’s minimum required contribution to the Spin-Off Plan is expected to be zero; however, Management and the Board of Directors of Trustmark will monitor the Spin-Off Plan throughout 2017 to determine any additional funding requirements by the Spin-Off Plan’s measurement date, which is December 31.

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 mergers prior to 2014, Trustmark became the administrator of small nonqualified supplemental retirement plans, for which the plan benefits were frozen prior to the respective 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,
	2017		2016
Service cost	$	35	$	74
Interest cost		561		546
Amortization of prior service cost		63		63
Recognized net actuarial loss		222		221
Net periodic benefit cost	$	881	$	904