Company: STBA
Filing Date: 2025-03-31
Form Type: DEF 14A
Source: 0001193125-25-068253
Chunk: 62

Company: S&T BANCORP INC
Filing Date: 2025-03-31
Form: DEF 14A
Chunk 62
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 payment. A 50% joint and survivor annuity provides a reduced monthly payment for the participant’s life with 50% of the payment continuing for the spouse’s life following the participant’s death. Various optional annuity forms of payment are available under the Plan, including a single lump sum payment. All forms of payment are actuarially equivalent in value. S&T Bancorp, Inc. Supplemental Savings and Make-upPlan As noted above under the definition of Average Final Compensation for the Employees’ Retirement Plan of S&T Bank, compensation deferred under the S&T Bancorp, Inc. Supplemental Savings and Make-upPlan (the “Nonqualified Plan”) is not included as eligible compensation and includable compensation is limited as a result of maximums imposed by law. The Nonqualified Plan restores benefits that are not payable by the Retirement Plan as a result of the executive’s election to defer compensation or as a result of the compensation limit. The provisions described above for the Retirement Plan apply to this plan as well, with the exception that upon 50| S&T Bancorp, Inc.| 2025 Proxy Statement

Executive Compensation termination or retirement participants automatically receive their benefit in the form of an actuarially equivalent lump sum, which is credited to their account under this plan and paid out in accordance with their distribution election. S&T Bancorp, Inc. Retirement Make-upPlan The S&T Bancorp, Inc. Retirement Make-UpPlan restores benefits for certain employees hired following the soft freeze of the Employees’ Retirement Plan of S&T Bank that otherwise would have been earned under the Retirement Plan and the Supplemental Savings and Make-upPlan. The benefits earned under this plan are determined using the same plan provisions as the Retirement Plan, except that eligible compensation does not exclude deferred compensation, IRS limits are ignored, and the full benefit is paid as a lump sum upon termination of the participant. Nonqualified Deferred Compensation The following table provides information with respect to the Nonqualified Plan and the NEOs. The amounts shown include compensation earned and deferred in prior years, and earnings on, or distributions of, such amounts.

| Name                    |     | Executive      
 Contributions  
 in Last Fiscal 
 Year ($)       |     |        |     | Registrant     
 Contributions  
 in Last Fiscal 
 Year ($)(1)    |     |        |     | RSU Deferred   
 Contributions  
 in Last Fiscal 
 Year ($)       |     |         |     | Aggregate   
 Earnings in 
 Last Fiscal 
 Year ($)    |     |         |     | Aggregate     
 Withdrawals/