Officers Certificate, dated February 1, 2024, including the form of the Companys 4.700% Senior Notes due 2034

Exhibit 4.2

KLA CORPORATION

Officer’s Certificate

February 1, 2024

Reference is made to the Indenture, dated as of June 23, 2022 (the “Base Indenture”) between KLA Corporation (the “Company”) and U.S. Bank Trust Company, National Association, as trustee (the “Trustee”) and that certain Officer’s Certificate, dated as of June 23, 2022 (the “2022 Officer’s Certificate” and together with the Base Indenture, the “Indenture”). Pursuant to Sections 102, 201, 301 and 309 of the Indenture, the undersigned officer does hereby certify, in connection with the issuance of $500,000,000 aggregate principal amount of 4.700% Senior Notes due 2034 (the “2034 Notes”) and $250,000,000 aggregate principal amount of 4.950% Senior Notes due 2052 (the “2052 Notes” and, together with the 2034 Notes, the “Notes”):

1. The undersigned has read all such covenants or conditions and the definitions relating thereto provided for in the Indenture relating to the issuance, delivery and authentication of the Notes pursuant to Sections 202, 301 and 309 of the Base Indenture.

2. The statements of the undersigned contained herein are based upon a review of the Indenture and upon an examination of the relevant records of the Company.

3. The undersigned has, in the opinion of such individual, made such examination or investigation as is necessary to enable him to express an informed opinion as to whether or not such covenants or conditions relating thereto have been complied with.

4. In the opinion of the undersigned, such conditions or covenants contained in the Indenture relating to the issuance, delivery and authentication of the Notes have been complied with.

5. The 2052 Notes constitute an additional issuance of, and form a single series with, the $1,200,000,000 aggregate principal amount of 4.950% Senior Notes due 2052 that the Company issued on June 23, 2022.

Capitalized terms used but not otherwise defined herein shall have the meanings specified in the Indenture.

The undersigned does hereby certify, in connection with the issuance of the 2034 Notes, that the terms of the 2034 Notes are as follows:

[Signature Page Follows]

IN WITNESS WHEREOF, the undersigned has hereunto executed this Officer’s Certificate and caused it to be delivered as of the date first written above.

[Signature Page to Officer’s Certificate Pursuant to the Indenture]

EXHIBIT A

[FORM OF FACE OF SECURITY]

KLA CORPORATION

[Global Securities Legend]

THIS GLOBAL SECURITY IS HELD BY AND REGISTERED IN THE NAME OF THE DEPOSITARY (AS DEFINED IN THE INDENTURE GOVERNING THIS SECURITY) OR ITS NOMINEE IN CUSTODY FOR THE BENEFIT OF THE BENEFICIAL OWNERS HEREOF, IS NOT EXCHANGEABLE FOR SECURITIES REGISTERED IN THE NAME OF A PERSON OTHER THAN THE DEPOSITARY OR ITS NOMINEE EXCEPT IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE, AND IS NOT TRANSFERABLE TO ANY PERSON UNDER ANY CIRCUMSTANCES EXCEPT THAT (I) THE TRUSTEE MAY MAKE SUCH NOTATIONS HEREON AS MAY BE REQUIRED PURSUANT TO SECTION 203 OF THE INDENTURE, (II) THIS GLOBAL SECURITY MAY BE EXCHANGED PURSUANT TO SECTION 203(a) OF THE INDENTURE, (III) THIS GLOBAL SECURITY MAY BE DELIVERED TO THE TRUSTEE FOR CANCELLATION PURSUANT TO SECTION 306 OF THE INDENTURE AND (IV) THIS GLOBAL SECURITY MAY BE TRANSFERRED TO A SUCCESSOR DEPOSITARY WITH THE PRIOR WRITTEN CONSENT OF THE COMPANY.

UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION (“DTC”), TO THE ISSUER OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

[Form of Face of Security]

KLA CORPORATION

% SENIOR NOTE DUE 20

CUSIP No. _________

ISIN No. _________

No. _________ $_________

KLA CORPORATION, a corporation duly organized and existing under the laws of the State of Delaware (herein called the “Company”, which term includes any successor Person under the Indenture hereinafter referred to), for value received, hereby promises to pay to CEDE & CO., or registered assigns, the principal sum of    dollars on   ,   which aggregate principal amount may from time to time be reduced or increased, as appropriate, in accordance with the within mentioned Indenture and as reflected in the Schedule of Exchanges of Interests in the Global Security attached hereto, to reflect exchanges or redemptions of the Securities represented hereby, and to pay interest thereon from February 1, 2024 or from the most recent Interest Payment Date to which interest has been paid or duly provided for, semi-annually on February 1 and August 1 in each year, commencing August 1, 2024, at the rate of    % per annum, until the principal hereof is paid or made available for payment, provided, however that any principal and premium, and any such installment of interest, which is overdue shall bear interest at the rate of    % per annum (to the extent that the payment of such interest shall be legally enforceable), from the dates such amounts are due until they are paid or made available for payment, and such interest shall be payable on demand. Interest on the Notes shall be computed on the basis of a 360-day year of twelve 30-day months. The interest so payable, and punctually paid or duly provided for, on any Interest Payment Date will, as provided in such Indenture, be paid to the Person in whose name this Security (or one or more Predecessor Securities) is registered at the close of business on the Regular Record Date for such interest, which shall be the January 15 or July 15 (whether or not a Business Day), as the case may be, next preceding such Interest Payment Date. Any such interest not so punctually paid or duly provided for will forthwith cease to be payable to the Holder on such Regular Record Date and may either be paid to the Person in whose name this Security (or one or more Predecessor Securities) is registered at the close of business on a Special Record Date for the payment of such Defaulted Interest to be fixed by the Trustee, notice whereof shall be given to Holder of the Securities of this series not less than 10 days prior to such Special Record Date.

Payment of the principal of (and premium, if any) and any such interest on this Security will be made at the office or agency of the Company maintained for that purpose in the contiguous United States, in accordance with the terms of the Indenture referred to or the reverse hereof in such coin or currency of the United States of America as at the time of payment is legal tender for payment of public and private debts.

Reference is hereby made to the further provisions of this Security set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place.

This Security shall be deemed to be a contract made under the laws of the State of New York, and for all purposes shall be construed in accordance with and governed by the laws of said state.

Unless the certificate of authentication hereon has been executed by the Trustee referred to on the reverse hereof by manual signature, this Security shall not be entitled to any benefit under the Indenture or be valid or obligatory for any purpose.

IN WITNESS WHEREOF, the Company has caused this instrument to be duly executed.

CERTIFICATE OF AUTHENTICATION

This is one of the Securities of the series designated therein referred to in the within mentioned Indenture.

Dated: ______________

[Form of Reverse of Security]

This Security is one of a duly authorized issue of securities of the Company (herein called the “Securities”), issued and to be issued in one or more series under an Indenture, dated as of June 23, 2022 (herein called the “Indenture”, which term shall have the meaning assigned to it in such instrument), between the Company and U.S. Bank Trust Company, National Association, as Trustee (herein called the “Trustee”, which term includes any successor trustee under the Indenture), and reference is hereby made to the Indenture for a statement of the respective rights, limitations of rights, duties and immunities thereunder of the Company, the Trustee and the Holders of the Securities and of the terms upon which the Securities are, and are to be, authenticated and delivered. This Security is one of the series designated on the face hereof, initially limited in aggregate principal amount to $ .

1. Interest.

The Company promises to pay interest on the principal amount of this Security at the rate per annum described above.

No reference herein to the Indenture and no provision of this Security or of the Indenture shall alter or impair the obligation of the Company, which is absolute and unconditional, to pay the principal of and any premium and interest on this Security at the times, place and rate, and in the coin or currency, herein prescribed.

2. Paying Agent.

Initially, U.S. Bank Trust Company, National Association, National Association (the “Trustee”) will act as paying agent. The Company may change any paying agent without notice to the Holders.

3. Indenture; Defined Terms.

This Security is one of the % Senior Notes due 20 established pursuant to an Officer’s Certificate dated February 1, 2024 and issued pursuant to Sections 102, 201 and 301 of the Indenture.

For purposes of this Security, unless otherwise defined herein, capitalized terms herein are used as defined in the Indenture. To the extent the terms of the Indenture and this Security are inconsistent, the terms of the Indenture shall govern.

4. Denominations; Transfer; Exchange.

As provided in the Indenture and subject to certain limitations therein set forth, the transfer of this Security may be registered and this Security may be exchanged as provided in the Indenture.

The Securities are issuable only in registered form without coupons in minimum denominations of $2,000 and any integral multiple of $1,000 in excess thereof.

No service charge shall be made for any such registration of transfer or exchange, but the Company may require payment of a sum sufficient to cover any tax or other governmental charge payable in connection therewith.

Prior to due presentment of this Security for registration of transfer, the Company, the Trustee and any agent of the Company or the Trustee may treat the Person in whose name this Security is registered as the owner hereof for all purposes, whether or not this Security be overdue, and neither the Company, the Trustee nor any such agent shall be affected by notice to the contrary.

5. Amendment; Supplement; Waiver.

The Indenture permits, with certain exceptions as therein provided, the amendment thereof and the modification of the rights and obligations of the Company and the rights of the Holders of the Securities of each series to be affected under the Indenture at any time by the Company and the Trustee with the consent of the Holders of a majority in aggregate principal amount of the Securities at the time Outstanding of each series to be affected. The Indenture also contains provisions permitting the Holders of specified percentages in aggregate principal amount of the Securities of each series at the time Outstanding, on behalf of the Holders of all Securities of such series, to waive compliance by the Company with certain provisions of the Indenture and certain past defaults under the Indenture and their consequences. Any such consent or waiver by the Holder of this Security shall be conclusive and binding upon such Holder and upon all future Holders of this Security and of any Security issued upon the registration of transfer hereof or in exchange herefor or in lieu hereof, whether or not notation of such consent or waiver is made upon this Security.

6. Optional Redemption.

Prior to   , 20 ( months prior to the maturity date of this series of Securities) (the “Par Call Date”), the Company may redeem the Securities of this series at its option,  in whole or in part, at any time and from time to time, at a redemption price (expressed as a percentage of principal amount and rounded to three decimal places) equal to the greater of:

(1) (a) the sum of the present values of the remaining scheduled payments of principal and interest on this series of Securities discounted to the redemption date (assuming this series of Securities matured on the Par Call Date) on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) at the Treasury Rate (as defined below) plus basis points, less (b) interest accrued to the date of redemption, and

(2) 100% of the principal amount of the Securities of this series to be redeemed,

plus, in either case, accrued and unpaid interest on this series of Securities to, but not including, the redemption date.

On or after the Par Call Date, the Company may redeem this series of Securities at its option, in whole or in part, at any time and from time to time, at a redemption price equal to 100% of the principal amount of the Securities being redeemed plus accrued and unpaid interest thereon to, but not including, the redemption date.

On and after the redemption date, interest will cease to accrue on the Securities or any portion thereof called for redemption, unless the Company defaults in the payment of the redemption price and accrued interest. On or before the redemption date, the Company will deposit with a paying agent or the Trustee money sufficient to pay the redemption price of, and accrued interest on, the Securities to be redeemed on that date. Calculation of the redemption price will be made by the Company or on its behalf by such person as the Company may designate; provided that such calculation or the correctness thereof shall not be a duty or obligation of the Trustee.

For purposes of this Section 6, the following terms will be applicable:

“Business Day” means each day that is not a Legal Holiday.

“Legal Holiday” means a Saturday, a Sunday or a day on which commercial banking institutions or the corporate trust office are not required to be open in the State of New York or a place of payment.

“Treasury Rate” means, with respect to any redemption date, the yield determined by the Company in accordance with the following two paragraphs.

The Treasury Rate shall be determined by the Company after 4:15 p.m., New York City time (or after such time as yields on U.S. government securities are posted daily by the Board of Governors of the Federal Reserve System), on the third Business Day preceding the redemption date based upon the yield or yields for the most recent day that appear after such time on such day in the most recent statistical release published by the Board of Governors of the Federal Reserve System designated as “Selected Interest Rates (Daily)—H.15” (or any successor designation or publication) (“H.15”) under the caption “U.S. government securities–Treasury constant maturities–Nominal” (or any successor caption or heading) (“H.15 TCM”). In determining the Treasury Rate, the Company shall select, as applicable: (1) the yield for the Treasury constant maturity on H.15 exactly equal to the period from the redemption date to the Par Call Date (the “Remaining Life”); or (2) if there is no such Treasury constant maturity on H.15 exactly equal to the Remaining Life, the two yields – one yield corresponding to the Treasury constant maturity on H.15 immediately shorter than and one yield corresponding to the Treasury constant maturity on H.15 immediately longer than the Remaining Life – and shall interpolate to the Par Call Date on a straight-line basis (using the actual number of days) using such yields and rounding the result to three decimal places; or (3) if there is no such Treasury constant maturity on H.15 shorter than or longer than the Remaining Life, the yield for the single Treasury constant maturity on H.15 closest to the Remaining Life. For purposes of this paragraph, the applicable Treasury constant maturity or maturities on H.15 shall be deemed to have a maturity date equal to the relevant number of months or years, as applicable, of such Treasury constant maturity from the redemption date.

If on the third Business Day preceding the redemption date H.15 TCM is no longer published, the Company shall calculate the Treasury Rate based on the rate per annum equal to the semi-annual equivalent yield to maturity at 11:00 a.m., New York City time, on the second Business Day preceding such redemption date of the United States Treasury security maturing on, or with a maturity that is closest to, the Par Call Date, as applicable. If there is no United States Treasury security maturing on the Par Call Date but there are two or more United States Treasury securities with a maturity date equally distant from the Par Call Date, one with a maturity date

preceding the Par Call Date and one with a maturity date following the Par Call Date, the Company shall select the United States Treasury security with a maturity date preceding the Par Call Date. If there are two or more United States Treasury securities maturing on the Par Call Date or two or more United States Treasury securities meeting the criteria of the preceding sentence, the Company shall select from among these two or more United States Treasury securities the United States Treasury security that is trading closest to par based upon the average of the bid and asked prices for such United States Treasury securities at 11:00 a.m., New York City time. In determining the Treasury Rate in accordance with the terms of this paragraph, the semi-annual yield to maturity of the United States Treasury security shall be based upon the average of the bid and asked prices (expressed as a percentage of principal amount) at 11:00 a.m., New York City time, of such United States Treasury security, and rounded to three decimal places.

7. Offer to Repurchase Upon Change of Control Triggering Event

Upon the occurrence of a Change of Control Triggering Event (as defined below) with respect to the Securities, unless the Company shall have exercised its right pursuant to Section 6 hereof to redeem the Securities, the Company will be required to make an offer to repurchase all or, at the Holder’s option, any part (equal to $2,000 or any integral multiple of $1,000 in excess thereof), of each Holder’s Securities pursuant to the offer described below (the “Change of Control Offer”). In the Change of Control Offer, the Company will be required to offer payment in cash equal to 101% of the aggregate principal amount of Securities repurchased plus accrued and unpaid interest, if any, on the Securities repurchased, to, but not including, the date of purchase (the “Change of Control Payment”).

Within 30 days following any Change of Control Triggering Event with respect to the Securities, the Company will be required to give notice to Holders of the Securities, with a copy to the Trustee, describing the transaction or transactions that constitute the Change of Control Triggering Event and offering to repurchase the Securities on the date specified in the notice, which date will be no earlier than 30 and no later than 60 days from the date such notice is given (the “Change of Control Payment Date”), pursuant to the procedures required by the Securities and described in such notice. The Company must comply with the requirements of applicable securities laws and regulations in connection with the repurchase of the Securities as a result of a Change of Control Triggering Event.

On the Change of Control Payment Date, the Company will be required, to the extent lawful, to:

The Paying Agent will be required to promptly give, to each Holder who properly tendered Securities, the purchase price for the Securities, and the Trustee will be required to promptly authenticate and mail (or cause to be transferred by book entry) to each such Holder a new Security equal in principal amount to any unpurchased portion of the Securities surrendered, if any; provided that each new Security will be in a principal amount of $2,000 or an integral multiple of $1,000 in excess thereof.

The Company will not be required to make a Change of Control Offer upon a Change of Control Triggering Event if a third party makes such an offer in the manner, at the times and otherwise in compliance with the requirements for an offer made by the Company and such third party purchases all Securities properly tendered and not withdrawn under its offer. In the event that such third party terminates or otherwise fails to complete its offer, the Company will be required to make a Change of Control Offer treating the date of such termination or default as though it were the date of the Change of Control Triggering Event.

The Company will comply with the requirements of Rule 14e-1 under the Exchange Act, and any other securities laws and regulations thereunder to the extent those laws and regulations are applicable in connection with the repurchase of the Securities as a result of a Change of Control Triggering Event. To the extent that the provision of any such securities laws or regulations conflicts with this Section 7, the Company will comply with those securities laws and regulations and will not be deemed to have breached the Company’s obligations under this Section 7 by virtue of any such conflict. For purposes of this Section 7, the following terms will be applicable:

“Change of Control” means the occurrence of any one of the following: (1) the direct or indirect sale, lease, transfer, conveyance or other disposition (other than by way of merger, amalgamation, arrangement or consolidation), in one or a series of related transactions, of all or substantially all of the Company’s properties or assets and those of its subsidiaries, taken as a whole, to one or more persons, other than to the Company or one of its subsidiaries; (2) the first day on which a majority of the members of the Board of Directors of the Company is not composed of Continuing Directors (as defined below); (3) the consummation of any transaction including, without limitation, any merger, amalgamation, arrangement or consolidation the result of which is that any person becomes the beneficial owner, directly or indirectly, of more than 50% of the Company’s Voting Stock; (4) the Company consolidates with, or merges with or into, any person, or any person consolidates with, or merges with or into, the Company, in any such event pursuant to a transaction in which any of the outstanding Voting Stock of the Company or of such other person is converted into or exchanged for cash, securities or other property, other than any such transaction where the shares of the Company’s Voting Stock outstanding immediately prior to such transaction constitute, or are converted into or exchanged for, a majority of the Voting Stock of the surviving person immediately after giving effect to such transaction; or (5) the adoption of a plan relating to the Company’s liquidation or dissolution. For the purposes of this definition, “person” and “beneficial owner” have the meanings used in Section 13(d) of the Exchange Act.

“Change of Control Triggering Event” means the Securities cease to be rated Investment Grade by at least two of the three Rating Agencies on any date during the period (the “Trigger Period”) commencing on the date of the first public notice of the occurrence of a Change of Control or the Company’s intention to effect a Change of Control and ending 60 days following consummation of such Change of Control (which Trigger Period will be extended following

consummation of a Change of Control for so long as any of the Rating Agencies has publicly announced that it is considering a possible ratings change). Unless at least two of the three Rating Agencies are providing a rating for the Securities at the commencement of any Trigger Period, the Securities will be deemed to have ceased to be rated Investment Grade by at least two of the three Rating Agencies during that Trigger Period. Notwithstanding the foregoing, no Change of Control Triggering Event will be deemed to have occurred in connection with any particular Change of Control unless and until such Change of Control has actually been consummated.

“Continuing Directors” means, as of any date of determination, any member of the Board of Directors of the Company who (1) was a member of the Board of Directors of the Company on the Issue Date; or (2) was nominated for election, elected or appointed to the Board of Directors of the Company with the approval of a majority of the Continuing Directors who were members of the Board of Directors of the Company at the time of such nomination, election or appointment (either by a specific vote or by approval by such directors of the Company’s proxy statement in which such member was named as a nominee for election as a director).

“Fitch” means Fitch Ratings, Inc., and its successors.

“Investment Grade” means a rating equal to or higher than Baa3 (or the equivalent) by Moody’s, BBB- (or the equivalent) by S&P or BBB- (or the equivalent) by Fitch, and the equivalent investment grade credit rating from any replacement Rating Agency or Rating Agencies selected by the Company.

“Moody’s” means Moody’s Investors Service, Inc., a subsidiary of Moody’s Corporation, and its successors.

“Rating Agencies” means (a) each of Moody’s, S&P and Fitch to the extent Fitch makes its rating available; and (b) if any of the Rating Agencies ceases to rate the Securities or fails to make a rating of the Securities publicly available for reasons outside of the Company’s control, a “nationally recognized statistical rating organization” as such term is defined in Section 3(a)(62) of the Exchange Act that is selected by the Company (as certified by a resolution of the Board of Directors of the Company) as a replacement for Moody’s, S&P or Fitch, or some or all of them, as the case may be.

“S&P” means Standard & Poor’s Global Ratings, a division of S&P Global Inc., and its successors.

“Voting Stock” of any specified person as of any date means the capital stock of such person that is at the time entitled to vote generally in the election of the board of directors of such person.

8. Defeasance.

The Indenture contains provisions for defeasance at any time of the entire indebtedness of this Security or certain covenants and Events of Default with respect to this Security, in each case upon compliance with certain conditions set forth in the Indenture.

9. Defaults and Remedies.

If an Event of Default with respect to Securities of this series shall occur and be continuing, the principal of the Securities of this series may be declared due and payable in the manner and with the effect provided in the Indenture.

As provided in and subject to the provisions of the Indenture, if any Event of Default occurs and is continuing, the Trustee or the Holders of at least 25% in aggregate principal amount of the then Outstanding Securities of this series may declare all the Securities of this series to be due and payable immediately. Upon any such declaration, the entire aggregate principal amount of, premium, if any, and accrued and unpaid interest on the Securities of this series shall become immediately due and payable. Notwithstanding the foregoing, in the case of an Event of Default arising from certain events of bankruptcy or insolvency with respect to the Company, all Outstanding Securities of this series will become due and payable without further action or notice. Holders may not enforce the Indenture or the Securities except as provided in the Indenture. Subject to certain limitations, Holders of a majority in aggregate principal amount of the then Outstanding Securities of this series may direct the Trustee in its exercise of any trust or power. The Trustee may withhold from Holders of the Securities notice of any continuing Default or Event of Default (except a Default or Event of Default relating to payment of principal or interest on any Security) if it determines that withholding notice is in their interest. The Holders of a majority in aggregate principal amount of the Securities of this series may waive any existing or past Default or Event of Default under the Indenture, and its consequences, except a default in the payment of the principal of, or interest on, any Securities. The Company is required to deliver to the Trustee annually a statement regarding compliance with the Indenture.

10. Authentication.

This Security shall not be valid until the Trustee manually signs the certificate of authentication on this Note.

11. Abbreviations and Defined Terms.

Customary abbreviations may be used in the name of a Holder of a Note or an assignee, such as: TEN COM (= tenants in common), TEN ENT (= tenants by the entireties), JT TEN (= joint tenants with right of survivorship and not as tenants in common), CUST (= Custodian), and U/G/M/A (= Uniform Gifts to Minors Act).

12. CUSIP Numbers.

Pursuant to a recommendation promulgated by the Committee on Uniform Security Identification Procedures, the Company has caused CUSIP numbers to be printed on the Securities as a convenience to the Holders of the Securities. No representation is made as to the accuracy of such numbers as printed on the Securities and reliance may be placed only on the other identification numbers printed hereon.

13. Waiver of Liabilities

No past, present or future director, officer, employee, incorporator, agent, stockholder or Affiliate of the Company or any of its Subsidiaries, as applicable, shall have any liability for any obligations of the Company or any of its Subsidiaries under the Securities, the Indenture or for any claim based on, in respect of, or by reason of, such obligations or their creation. Each Holder by accepting a Security waives and releases all such liabilities. The waiver and release are part of the consideration for issuance of the Securities.

14. Governing Law.

The laws of the State of New York shall govern the Indenture and this Note thereof.

ASSIGNMENT FORM

To assign this Security, fill in the form below:

I or we assign and transfer this Security to:

(Insert assignee’s social security or tax I.D. no.)

(Print or type assignee’s name, address and zip code)

and irrevocably appoint ______________________ as agent to transfer this Security on the books of the Company. The agent may substitute another to act for him.

*NOTICE: The Signature must be guaranteed by an Institution which is a member of one of the following recognized signature Guarantee Programs: (i) The Securities Transfer Agent Medallion Program (STAMP); (ii) The New York Stock Exchange Medallion Program (MNSP); (iii) The Stock Exchange Medallion Program (SEMP); or (iv) such other guarantee program acceptable to the Trustee.

[TO BE ATTACHED TO GLOBAL SECURITIES]

SCHEDULE OF EXCHANGES OF INTERESTS IN THE GLOBAL

SECURITY

The initial outstanding principal amount of this Global Security is $    .

The following exchanges of an interest in this Global Security for an interest in another Global Security or for a Definitive Security, exchanges of an interest in another Global Security or a Definitive Security for an interest in this Global Security, or exchanges or purchases of a part of this Global Security have been made:

REPURCHASE EXERCISE NOTICE UPON A CHANGE OF CONTROL

To: KLA Corporation

The undersigned registered owner of this Security hereby acknowledges receipt of a notice from KLA Corporation (the “Company”) as to the occurrence of a Change of Control Triggering Event with respect to the Company and hereby directs the Company to pay, or cause the Trustee to pay, ________________ an amount in cash equal to 101% of the aggregate principal amount of the Securities, or the portion thereof (which is $2,000 principal amount or a multiple of $1,000 in excess thereof) below designated, to be repurchased plus interest accrued to, but excluding, the repurchase date, except as provided in the Indenture.

Dated: _____________

Signature ____________________

Principal amount to be repurchased (at least $2,000 or a multiple of $1,000 in excess thereof): _________________

Remaining principal amount following such repurchase: ________________

Tax Identification No.:

Signature Guarantee*: