Company: STBA
Filing Date: 2025-06-23
Form Type: 11-K
Source: 0000719220-25-000040
Chunk: 3

Company: S&T BANCORP INC
Filing Date: 2025-06-23
Form: 11-K
Chunk 3
---
      |  10,807,527 |
| Investment income:                                     |     |                         |             |     |      |             |
| Dividends                                              |     |                         |   3,067,884 |     |      |   2,810,739 |
| Net appreciation in fair value of investments          |     |                         |  12,740,685 |     |      |  11,360,412 |
|                                                        |     |                         |  15,808,569 |     |      |  14,171,151 |
| Total Additions                                        |     |                         |  27,261,375 |     |      |  24,978,678 |
| Deductions                                             |     |                         |             |     |      |             |
| Distributions to participants                          |     |                         | -15,182,946 |     |      | -10,331,516 |
| Participant administrative fees                        |     |                         |     -37,462 |     |      |     -32,566 |
| Total Deductions                                       |     |                         | -15,220,408 |     |      | -10,364,082 |
| Net increase                                           |     |                         |  12,040,967 |     |      |  14,614,596 |
| Net assets available for benefits at beginning of year |     |                         | 116,313,668 |     |      | 101,699,072 |
| Net assets available for benefits at end of year       |     | $                       | 128,354,635 |     | $    | 116,313,668 |

See accompanying notes to the financial statements.

<div align='center'>4</div>

#### Thrift Plan for Employees of S&T Bank

### Notes to Financial Statements

#### Years ended December 31, 2024 and 2023
| 1. |     | Description of the Plan |

The following description of the Thrift Plan for Employees of S&T Bank (the Plan) provides only general information. For more complete information about the Plan, including participation, vesting and benefit provisions, refer to the Plan Document, which can be obtained from S&T Bank (the Plan Sponsor and Employer).

#### General
The Plan was adopted effective May 1, 1984 and made retroactive to January 1, 1984 by the Plan Sponsor. The Plan is a defined contribution plan that covers substantially all