SEC Form 4

FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
X	Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person* Kim Jae (Last) (First) (Middle) C/O LUMENTUM HOLDINGS INC. 1001 RIDDER PARK DRIVE (Street) SAN JOSE CALIFORNIA 95131 (City) (State) (Zip) UNITED STATES (Country)	2. Issuer Name and Ticker or Trading Symbol Lumentum Holdings Inc. [ LITE ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director 10% Owner X Officer (give title below) Other (specify below) SVP, GENERAL COUNSEL
	2a. Foreign Trading Symbol
	3. Date of Earliest Transaction (Month/Day/Year) 08/25/2026	6. Individual or Joint/Group Filing (Check Applicable Line) X Form filed by One Reporting Person Form filed by More than One Reporting Person
	4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	08/25/2026		S(1)		205	D	$842.3932(2)	49,599	D
Common Stock	08/25/2026		S(1)		280	D	$843.6821(3)	49,319	D
Common Stock	08/25/2026		S(1)		360	D	$844.6617(4)	48,959	D
Common Stock	08/25/2026		S(1)		570	D	$845.959(5)	48,389	D
Common Stock	08/25/2026		S(1)		456	D	$847.0044(6)	47,933	D
Common Stock	08/25/2026		S(1)		491	D	$847.9411(7)	47,442	D
Common Stock	08/25/2026		S(1)		600	D	$849.1433(8)	46,842	D
Common Stock	08/25/2026		S(1)		600	D	$850.4378(9)	46,242	D
Common Stock	08/25/2026		S(1)		970	D	$851.3098(10)	45,272	D
Common Stock	08/25/2026		S(1)		1,998	D	$852.3285(11)	43,274	D
Common Stock	08/25/2026		S(1)		851	D	$853.5373(12)	42,423	D
Common Stock	08/25/2026		S(1)		1,080	D	$854.8428(13)	41,343	D
Common Stock	08/25/2026		S(1)		273	D	$855.8929(14)	41,070	D
Common Stock	08/25/2026		S(1)		1,679	D	$856.698(15)	39,391	D
Common Stock	08/25/2026		S(1)		815	D	$857.9592(16)	38,576	D
Common Stock	08/25/2026		S(1)		40	D	$858.64	38,536	D
Common Stock	08/25/2026		S(1)		732	D	$860.0367(17)	37,804	D
Common Stock	08/25/2026		A(18)		1,635	A	$0	39,439	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 6, 2026.

2. These sales were executed in multiple trades at prices ranging from $842.06 to $843.02. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide full information regarding the number of shares sold at each separate price, within the ranges set forth in footnotes (2) through (17) to this Form 4, upon request, to the staff of the Securities and Exchange Commission, the Issuer or a security holder of the Issuer.

3. These sales were executed in multiple trades at prices ranging from $843.13 to $843.94.

4. These sales were executed in multiple trades at prices ranging from $844.20 to $845.00.

5. These sales were executed in multiple trades at prices ranging from $845.41 to $846.33.

6. These sales were executed in multiple trades at prices ranging from $846.475 to $847.44.

7. These sales were executed in multiple trades at prices ranging from $847.505 to $848.495.

8. These sales were executed in multiple trades at prices ranging from $848.51 to $849.495.

9. These sales were executed in multiple trades at prices ranging from $849.88 to $850.87.

10. These sales were executed in multiple trades at prices ranging from $850.915 to $851.61.

11. These sales were executed in multiple trades at prices ranging from $851.935 to $852.87.

12. These sales were executed in multiple trades at prices ranging from $853.035 to $854.00.

13. These sales were executed in multiple trades at prices ranging from $854.17 to $855.155.

14. These sales were executed in multiple trades at prices ranging from $855.17 to $856.15.

15. These sales were executed in multiple trades at prices ranging from $856.22 to $857.21.

16. These sales were executed in multiple trades at prices ranging from $857.365 to $858.255.

17. These sales were executed in multiple trades at prices ranging from $859.99 to $860.69.

18. These securities are restricted stock units ("RSUs"). Each RSU represents a contingent right to receive, following vesting, one share of the Issuer's Common Stock. 1/3 of the shares shall vest one year from the grant date, and the remaining shares shall vest in eight (8) equal quarterly installments thereafter on the 15th of November, February, May and August, subject to the Reporting Person continuing to be an employee through each such date, or as provided under the Issuer's 2025 Equity Incentive Plan.

	/s/ Jae Kim	08/27/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)