Exhibit 3.1
ARTICLES OF AMENDMENT
In compliance with the requirements of the applicable provisions (relating to articles of amendment), the undersigned, desiring to amend its articles, hereby states that:
IN TESTIMONY WHEREOF, the undersigned corporation has caused these Articles of Amendment to be signed by a duly authorized officer thereof this 3rd day of August, 2023.
KOPPERS HOLDINGS INC.
/s/ Stephanie L. Apostolou
General Counsel and Secretary
EXHIBIT A TO ARTICLES OF AMENDMENT
Article IV (Capital Stock) is hereby amended to add a new Section 406 set forth below:
Section 406. All shares of Stock shall be uncertificated. This section shall not apply to shares represented by a certificate at the time when this Section 406 became effective, until the certificate is surrendered to the Corporation.