Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

SCHEDULE 14A INFORMATION

(Rule 14a-101)

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934

(Amendment No. )

Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐

Check the appropriate box:

☐	Preliminary Proxy Statement

☐	Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

☐	Definitive Proxy Statement

☒	Definitive Additional Materials

☐	Soliciting Material Pursuant to §240.14a-12

Cabot Corporation

(Name of Registrant as Specified In Its Charter)

Payment of Filing Fee (Check the appropriate box):

☒	No fee required.

☐	Fee paid previously with preliminary materials

☐	Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a6(i)(1) and 0-11.




				Your Vote Counts!
				CABOT CORPORATION 2025 Annual Meeting Vote by March 12, 2025 11 :59 PM ET

You invested in CABOT CORPORATION 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 material for the shareholder meeting to be held on March 13, 2025.

Get informed before you vote

View the Notice & Proxy Statement, Annual Report online OR you can receive a free paper or email copy of the material(s) by requesting prior to February 27, 2025. 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 sendmaterial@proxyvote.com. 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.

LOGO

* If you choose to vote these shares in person at the meeting, you must request a “legal proxy.” To do so, please follow the instructions at www.ProxyVote.com or request a paper copy of the materials, which will contain the appropriate instructions. Please check the meeting materials for any special requirements for meeting attendance.

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.

LOGO


Voting Items		Board Recommends

1.	Election of Directors Nominees:
01	Michael M. Morrow *	For
02	Thierry Vanlancker *	For
03	Michelle E. Williams *	For
04	Frank A. Wilson *	For
2.	To approve, in an advisory vote, Cabot’s executive compensation.	For
3.	To approve the Cabot Corporation 2025 Long-Term Incentive Plan.	For
4.	To ratify the appointment of Deloitte & Touche LLP as Cabot’s independent registered public accounting firm for the fiscal year ending September 30, 2025.	For
NOTE: To transact such other business as may properly come before the Annual Meeting or any adjournment or postponement thereof. * Each to be elected to the class of Directors whose term expires in 2028.