SEC Form DEFA14A filed by Astec Industries Inc.

Astec Industries, Inc. Important Notice Regarding the Internet Availability of Proxy Materials for the Annual Meeting of Stockholders to be held virtually on April 24, 2026 at 10:00 a.m., Eastern Daylight Time This communication is not a form of voting and presents only an overview of the more complete proxy materials that are available to you on the Internet. We encourage you to access and review all of the important information contained in the proxy materials before voting. The Proxy Statement and Annual Report are available at https://web.viewproxy.com/astec/2026 If you want to receive a paper or email copy of these documents, you must request one by following the instructions below on or before April 17, 2026 to facilitate timely delivery. There is no charge to you for requesting a copy. Important information regarding the Internet availability of the Company’s proxy materials, instructions for accessing your proxy materials and voting online, and instructions for requesting paper or e-mail copies of your proxy materials are outlined in this Notice. CONTROL NUMBER You must use the 11-digit Virtual Control Number located in the box to attend the Annual Meeting virtually, to vote via Internet, or to request proxy materials. STOCKHOLDERS ARE CORDIALLY INVITED TO ATTEND THE ANNUAL MEETING. To the Stockholders of Astec Industries, Inc. The 2026 Annual Meeting of Stockholders of Astec Industries, Inc. will be held virtually on April 24, 2026 at 10:00 a.m., Eastern Daylight Time. As a Registered Holder, you may attend and vote your shares at the virtual Annual Meeting by registering at https://web.viewproxy.com/astec/2026 and using the Virtual Control Number above. Your registration must be received by 11:59 pm Eastern Time on April 22, 2026. On the day of the Annual Meeting, if you have properly registered, you may log in using the password you received via email in your registration confirmation and follow the instructions to vote your shares. Please have your Virtual Control Number with you during the Annual Meeting in order to vote. Further instructions on how to attend and vote during the Annual Meeting are contained in the Proxy Statement in the section titled “About the Annual Meeting.” The Board recommends a vote “FOR” Proposals 1, 2 and 3. 1. To re-elect to our Board of Directors the three director nominees named herein to serve for three-year terms or until their successor is duly elected and qualified; ELECTIONS OF DIRECTORS: (1) Nalin Jain (2) Jaco G. van der Merwe 2. To vote on a non-binding resolution to approve the compensation of the Company’s named executive officers. 3. To ratify the appointment of Deloitte & Touche LLP as the Company’s independent registered public accounting firm for the calendar year 2026. NOTE: To conduct any other business properly brought before the Annual Meeting or any adjournment, postponement, or rescheduling thereof.

The Securities and Exchange Commission rules permit us to make our proxy materials available to our stockholders via the Internet. Material for this Annual Meeting and future meetings may be requested by one of the following methods: E-Mail By e-mail at: [email protected] * If requesting material by e-mail, please send a blank e-mail with the company name and your 11-digit Virtual Control Number in the subject line. No other requests, instructions, or other inquiries should be included within this email request. Internet Go to https://web.viewproxy.com/astec/2026 Have the 11-digit Virtual Control Number available when you access the website and follow the instructions. Telephone Call 1-877-777-2857 Toll Free CONTROL NUMBER VOTING METHODS Via Internet prior to the Annual Meeting: Go to www.fcrvote.com/ASTE Have your 11-digit Virtual Control Number available and follow the prompts. • Your electronic vote prior to the Annual Meeting authorizes the named proxies to vote your shares in the same manner as if you marked, signed, dated, and returned a proxy card. Via Internet during the Annual Meeting: Go to www.fcrvote.com/ASTE Have your 11-digit Virtual Control Number available and follow the prompts. Astec Industries, Inc.