Affiliate of any specified Person means any other Person directly or indirectly
controlling or controlled by, or under direct or indirect common control with, such specified Person. For the purposes of this definition, control when used with respect to any specified Person means the power to direct the management
and policies of such Person, directly or indirectly, whether through the ownership of voting securities, by contract or otherwise; and the terms controlling and controlled have meanings correlative to the foregoing.
Agent means any Registrar, Paying Agent, Authenticating Agent, Depositary Custodian or agent for service of notices and demands.
Applicable Procedures of a Depositary means, with respect to any matter at any time, the policies and procedures of such
Depositary, if any, that are applicable to such matter at such time.
Authenticating Agent means, when used with respect to
Securities of any series, any Person authorized by the Trustee to act on behalf of the Trustee to authenticate the Securities of such series.
Board of Directors means any of (a) the board of directors of the Company, (b) any duly authorized committee of that
board or (c) any officer of the Company duly authorized by the board of directors of the Company to take a specified action.
Board Resolution means a copy of a resolution certified by the Secretary or an Assistant Secretary of the Company to have been
duly adopted by the Board of Directors and to be in full force and effect on the date of such certification, and delivered to the Trustee. Where any provision of this Indenture refers to action to be taken pursuant to a Board Resolution (including
the establishment of any series of the Securities and the forms and terms thereof), such action may be taken by any officer or employee of the Company authorized to take such action by the Board of Directors as evidenced by a Board Resolution.
Business Day, when used with respect to any Place of Payment, means each Monday, Tuesday, Wednesday, Thursday and Friday which is
not a day on which banking institutions in that Place of Payment, or the Federal Reserve Bank of New York, are authorized, obligated, or required by law or executive order to close or be closed; provided that, when used with respect to any
Security, Business Day may have such other meaning, if any, as may be specified for such Security as contemplated by Section 301. Any days referenced within this Indenture that are not referred to as Business Days shall be calendar
days.
Capital Stock means:
(1) in the case of a corporation, corporate stock;
(2) in the case of a limited liability company or similar entity, any membership or similar interests therein;
(3) in the case of an association or business entity, any and all shares, interests, participations, rights or other
equivalents (however designated) of corporate stock;
(4) in the case of a partnership, partnership interests (whether
general or limited); and
(5) any other interest or participation that confers on a Person the right to receive a share of
the profits and losses of, or distributions of assets of, the issuing Person.
Code means the United States Internal Revenue
Code of 1986, as amended.
Commission means the Securities and Exchange Commission, as from time to time constituted, created
under the Exchange Act, or, if at any time after the execution of this instrument such Commission is not existing and performing the duties now assigned to it under the Trust Indenture Act, then the body performing such duties at such time.
Company means the Person named as the Company in the first paragraph of this instrument until a successor Person shall
have become such pursuant to the applicable provisions of this Indenture, and thereafter Company shall mean such successor Person.
Company Request or Company Order means a written request or order signed in the name of the Company by any two
Officers of the Company.
Corporate Trust Office means the designated office of the Trustee at which this Indenture is
administered and which, at the date hereof, is located at Computershare Trust Company, N.A., 1505 Energy Park Drive, Saint Paul, Minnesota, 55108, Attention: CCT Administrator for ATI Inc., and for Agent services such office shall also mean the
office or agency of the Trustee at the date hereof located at Computershare Trust Company, N.A., 1505 Energy Park Drive, Saint Paul, Minnesota, 55108, Attention: Bondholder Communications for ATI Inc., or at such other address as the Trustee may
designate from time to time by notice to the Company, or the corporate trust office of any successor Trustee or any other Trustee with respect to a series.
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