POWER OF ATTORNEY

The undersigned, as a Section 16 reporting person of Lumentum Holdings. Inc. (the “Company”)

under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), hereby constitutes

and appoints Wajid Ali, Chief Financial Officer; Jae Kim, General Counsel; and Jonathan Shanberge,

Senior Director, Corporate Counsel, and each of them, as the undersigned's true and lawful attorney-

in-fact, with full power and authority as hereinafter described on behalf of and in the name, place and

stead of the undersigned, for the following actions:

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to complete and execute Forms 3, 4 and 5 and other forms and all amendments thereto as such

attorney-in-fact shall in his or her discretion determine to be required or advisable pursuant to

Section 16 of the Exchange Act and the rules and regulations promulgated thereunder, or any

successor laws and regulations, as a consequence of the undersigned's ownership, acquisition or

disposition of securities of the Company;

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to seek or obtain, as the undersigned’s representative and on the undersigned’s behalf, information

 on transactions in the Company’s securities from any third party, including but not limited to

 brokers, employee benefit plan administrators and trustees, and the undersigned hereby authorizes

 any such person to release any such information to any attorney-in-fact and further approves and

 ratifies any such release of information; and

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to do all acts in order to prepare, complete, execute and file such forms with the Securities and

Exchange Commission, any securities exchange or national association, the Company and such other

person or agency as the attorney-in-fact shall deem necessary or appropriate.

The undersigned hereby ratifies and confirms all that said attorneys-in-fact and agents shall do or

cause to be done by virtue hereof. The undersigned acknowledges and agrees that the foregoing

attorneys-in fact, in serving in such capacity at the request of the undersigned, are not assuming, nor

is the Company assuming, any of the undersigned's responsibilities to comply with the Exchange

Act, including but not limited to Section 16 of the Exchange Act, or any obligation or liability in

connection therewith.

This Power of Attorney shall remain in full force and effect until the undersigned is no longer required

to file Forms 3, 4, and 5 with respect to the undersigned's holdings of and transactions in securities

issued by the Company, unless earlier revoked by the undersigned in a signed writing delivered to the

foregoing attorneys-in-fact.

IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be executed as of

the 3^rd day of February, 2026.

Signature: /s/ Eric Chang

Print Name:  Eric Chang