Company: ASTE
Filing Date: 2025-09-10
Form Type: 8-K/A
Source: 0000792987-25-000056
Chunk: 0

Company: ASTEC INDUSTRIES INC
Filing Date: 2025-09-10
Form: 8-K/A
Chunk 0
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### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION

#### Washington, D.C. 20549

#### FORM 8-K/A

### CURRENT REPORT
<div align='center'>Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): July 1, 2025</div>

#### Astec Industries, Inc.
<div align='center'>(Exact name of registrant as specified in its charter)</div>

| Tennessee                    |     | 001-11595               |     | 62-0873631         |
| (State or other jurisdiction 
 of incorporation)            |     | -Commission File Number |     | -IRS Employer      
 Identification No. |

#### 1725 Shepherd Road, Chattanooga, Tennessee 37421
<div align='center'>(Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code: ( 423) 899-5898</div>

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

| ☐ |     | Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)                  |
| ☐ |     | Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)                 |
| ☐ |     | Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) |
| ☐ |     | Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) |

Securities registered pursuant to Section 12(b) of the Act:

| Title of each class |     | Trading Symbol(s) |     | Name of each exchange on which registered |
| Common Stock        |     | ASTE              |     | The Nasdaq Stock Market LLC               |

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an