Company: ASTE
Filing Date: 2025-09-10
Form Type: 8-K/A
Source: 0000792987-25-000056
Chunk: 2

Company: ASTEC INDUSTRIES INC
Filing Date: 2025-09-10
Form: 8-K/A
Chunk 2
---
 by reference herein.

(d) Exhibits

| 23.1 
 99.1 
 99.2 |     | Consent of BDO USA, P.C.                                                                                                                   
 Audited Financial Statements of TerraSource as of and for the year ended December 31, 2024                                                 
 Unaudited Financial Statements of TerraSource as of and for the three months ended March 31, 2025                                          |
|:-----|:----|:-------------------------------------------------------------------------------------------------------------------------------------------|
| 99.3 |     | Unaudited Pro Forma Combined Financial Statements as of and for the year ended December 31, 2024 and the three months ended March 31, 2025 |
| 104  |     | Cover Page Interactive Data File embedded within the Inline XBRL document                                                                  |

### SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

| Date: September 10, 2025 |     | Astec Industries, Inc. 
 By:                    |     | /s/ Brian J. Harris     |
|:-------------------------|:----|:-----------------------|:----|:------------------------|
|                          |     |                        |     | Brian J. Harris         |
|                          |     |                        |     | Chief Financial Officer |