Additional Proxy Soliciting Materials (Form DEFA14A)

SCHEDULE 14A INFORMATION

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934

Filed by the Registrant ☒

Filed by a Party other than the Registrant ☐

Check the appropriate box:

Your Vote Counts! JACOBS SOLUTIONS INC. 2026 Annual Meeting Vote by January 27, 2026 11:59 PM ET. For shares held in a Plan, vote by January 23, 2026 11:59 PM ET. JACOBS SOLUTIONS INC. 1999 BRYAN STREET SUITE 3500 DALLAS, TX 75201 V81546-P39717 You invested in JACOBS SOLUTIONS INC. and it's time to vote! You have the right to vote on proposals being presented at the Annual Meeting. This is an important notice regarding the availability of proxy materials for the shareholder meeting to be held on January 28, 2026. Get informed before you vote View the Notice and Proxy Statement and Annual Report online OR you can receive a free paper or email copy of the material(s) by requesting prior to January 14, 2026. If you would like to request a copy of the material(s) for this and/or future shareholder meetings, you may (1) visit www.ProxyVote.com, (2) call 1-800-579-1639 or (3) send an email to [email protected]. If sending an email, please include your control number (indicated below) in the subject line. Unless requested, you will not otherwise receive a paper or email copy. For complete information and to vote, visit www.ProxyVote.com Control # Smartphone users Vote in Person or Virtually at the Point your camera here and Meeting* vote without entering a January 28, 2026 12:30 PM CST control number In person at: 1999 Bryan Street, First Floor Dallas, Texas 75201 Virtually at: www.virtualshareholdermeeting.com/J2026 *Please check the meeting materials for any special requirements for meeting attendance. If you are attending the meeting in person, you will need to request a ballot to vote these shares.

Vote at www.ProxyVote.com THIS IS NOT A VOTABLE BALLOT This is an overview of the proposals being presented at the upcoming shareholder meeting. Please follow the instructions on the reverse side to vote these important matters. Board Voting Items Recommends 1. Election of Directors Nominees: 1a. Robert V. Pragada For 1b. Louis V. Pinkham For 1c. Priya Abani For 1d. Diane M. Bryant For 1e. Michael Collins For 1f. Manny Fernandez For 1g. Mary M. Jackson For 1h. Georgette D. Kiser For 1i. Robert A. McNamara For 1j. Julie A. Sloat For 2. Advisory vote to approve the Company's executive compensation. For 3. To ratify the appointment of Ernst & Young LLP as the Company's independent registered public accounting firm. For NOTE: Such other business as may properly come before the meeting or any adjournment thereof. Prefer to receive an email instead? While voting on www.ProxyVote.com, be sure to click "Delivery Settings". V81547-P39717