=== SEC Form 4 — Statement of Changes in Beneficial Ownership ===
Document Type: 4
Period of Report: 2026-08-25
10b5-1 Pre-arranged Plan: Yes
--- Issuer ---
Name: Lumentum Holdings Inc. (LITE)
CIK: 0001633978
--- Reporting Owner ---
Name: Retort Vincent
CIK: 0001648256
Role: Officer (SEE REMARKS)
--- Non-Derivative Transactions ---
[Transaction #1]
Security: Common Stock
Date: 2026-08-25 | Code: S (Open market sale)
Shares: -360 | Price: $842.22
Total Value: $303,197.80
Shares Owned After: 116,743 | Ownership: D (Direct)
Footnotes:
[F1] These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 13, 2025.
[F2] These sales were executed in multiple trades at prices ranging from $841.745 to $842.695. 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 (19) to this Form 4, upon request, to the staff of the Securities and Exchange Commission, the Issuer or a security holder of the Issuer.
[Transaction #2]
Security: Common Stock
Date: 2026-08-25 | Code: S (Open market sale)
Shares: -1,213 | Price: $843.60
Total Value: $1,023,288.50
Shares Owned After: 115,530 | Ownership: D (Direct)
Footnotes:
[F1] These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 13, 2025.
[F3] These sales were executed in multiple trades at prices ranging from $843.00 to $843.93.
[Transaction #3]
Security: Common Stock
Date: 2026-08-25 | Code: S (Open market sale)
Shares: -1,053 | Price: $844.61
Total Value: $889,372.43
Shares Owned After: 114,477 | Ownership: D (Direct)
Footnotes:
[F1] These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 13, 2025.
[F4] These sales were executed in multiple trades at prices ranging from $844.00 to $844.93.
[Transaction #4]
Security: Common Stock
Date: 2026-08-25 | Code: S (Open market sale)
Shares: -631 | Price: $845.63
Total Value: $533,592.47
Shares Owned After: 113,846 | Ownership: D (Direct)
Footnotes:
[F1] These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 13, 2025.
[F5] These sales were executed in multiple trades at prices ranging from $845.00 to $845.99.
[Transaction #5]
Security: Common Stock
Date: 2026-08-25 | Code: S (Open market sale)
Shares: -2,073 | Price: $846.44
Total Value: $1,754,680.07
Shares Owned After: 111,773 | Ownership: D (Direct)
Footnotes:
[F1] These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 13, 2025.
[F6] These sales were executed in multiple trades at prices ranging from $846.00 to $846.99.
[Transaction #6]
Security: Common Stock
Date: 2026-08-25 | Code: S (Open market sale)
Shares: -2,121 | Price: $847.52
Total Value: $1,797,581.44
Shares Owned After: 109,652 | Ownership: D (Direct)
Footnotes:
[F1] These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 13, 2025.
[F7] These sales were executed in multiple trades at prices ranging from $847.00 to $847.99.
[Transaction #7]
Security: Common Stock
Date: 2026-08-25 | Code: S (Open market sale)
Shares: -1,102 | Price: $848.66
Total Value: $935,220.68
Shares Owned After: 108,550 | Ownership: D (Direct)
Footnotes:
[F1] These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 13, 2025.
[F8] These sales were executed in multiple trades at prices ranging from $848.075 to $849.05.
[Transaction #8]
Security: Common Stock
Date: 2026-08-25 | Code: S (Open market sale)
Shares: -1,528 | Price: $849.71
Total Value: $1,298,350.00
Shares Owned After: 107,022 | Ownership: D (Direct)
Footnotes:
[F1] These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 13, 2025.
[F9] These sales were executed in multiple trades at prices ranging from $849.08 to $850.03.
[Transaction #9]
Security: Common Stock
Date: 2026-08-25 | Code: S (Open market sale)
Shares: -3,017 | Price: $850.66
Total Value: $2,566,427.95
Shares Owned After: 104,005 | Ownership: D (Direct)
Footnotes:
[F1] These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 13, 2025.
[F10] These sales were executed in multiple trades at prices ranging from $850.17 to $851.04.
[Transaction #10]
Security: Common Stock
Date: 2026-08-25 | Code: S (Open market sale)
Shares: -4,426 | Price: $851.68
Total Value: $3,769,518.86
Shares Owned After: 99,579 | Ownership: D (Direct)
Footnotes:
[F1] These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 13, 2025.
[F11] These sales were executed in multiple trades at prices ranging from $851.175 to $852.17.
[Transaction #11]
Security: Common Stock
Date: 2026-08-25 | Code: S (Open market sale)
Shares: -3,711 | Price: $852.60
Total Value: $3,164,000.46
Shares Owned After: 95,868 | Ownership: D (Direct)
Footnotes:
[F1] These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 13, 2025.
[F12] These sales were executed in multiple trades at prices ranging from $852.175 to $853.17.
[Transaction #12]
Security: Common Stock
Date: 2026-08-25 | Code: S (Open market sale)
Shares: -2,465 | Price: $853.62
Total Value: $2,104,168.12
Shares Owned After: 93,403 | Ownership: D (Direct)
Footnotes:
[F1] These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 13, 2025.
[F13] These sales were executed in multiple trades at prices ranging from $853.18 to $854.17.
[Transaction #13]
Security: Common Stock
Date: 2026-08-25 | Code: S (Open market sale)
Shares: -3,486 | Price: $854.89
Total Value: $2,980,132.25
Shares Owned After: 89,917 | Ownership: D (Direct)
Footnotes:
[F1] These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 13, 2025.
[F14] These sales were executed in multiple trades at prices ranging from $854.295 to $855.17.
[Transaction #14]
Security: Common Stock
Date: 2026-08-25 | Code: S (Open market sale)
Shares: -800 | Price: $855.84
Total Value: $684,672.88
Shares Owned After: 89,117 | Ownership: D (Direct)
Footnotes:
[F1] These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 13, 2025.
[F15] These sales were executed in multiple trades at prices ranging from $855.41 to $856.2725.
[Transaction #15]
Security: Common Stock
Date: 2026-08-25 | Code: S (Open market sale)
Shares: -4,676 | Price: $856.71
Total Value: $4,005,970.82
Shares Owned After: 84,441 | Ownership: D (Direct)
Footnotes:
[F1] These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 13, 2025.
[F16] These sales were executed in multiple trades at prices ranging from $856.46 to $857.43.
[Transaction #16]
Security: Common Stock
Date: 2026-08-25 | Code: S (Open market sale)
Shares: -3,511 | Price: $857.95
Total Value: $3,012,262.45
Shares Owned After: 80,930 | Ownership: D (Direct)
Footnotes:
[F1] These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 13, 2025.
[F17] These sales were executed in multiple trades at prices ranging from $857.53 to $858.51.
[Transaction #17]
Security: Common Stock
Date: 2026-08-25 | Code: S (Open market sale)
Shares: -188 | Price: $858.82
Total Value: $161,457.46
Shares Owned After: 80,742 | Ownership: D (Direct)
Footnotes:
[F1] These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 13, 2025.
[F18] These sales were executed in multiple trades at prices ranging from $858.595 to $859.42.
[Transaction #18]
Security: Common Stock
Date: 2026-08-25 | Code: S (Open market sale)
Shares: -2,302 | Price: $860.05
Total Value: $1,979,839.70
Shares Owned After: 78,440 | Ownership: D (Direct)
Footnotes:
[F1] These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 13, 2025.
[F19] These sales were executed in multiple trades at prices ranging from $859.99 to $860.83.
--- Footnotes (Complete Index) ---
F1: These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 13, 2025.
F10: These sales were executed in multiple trades at prices ranging from $850.17 to $851.04.
F11: These sales were executed in multiple trades at prices ranging from $851.175 to $852.17.
F12: These sales were executed in multiple trades at prices ranging from $852.175 to $853.17.
F13: These sales were executed in multiple trades at prices ranging from $853.18 to $854.17.
F14: These sales were executed in multiple trades at prices ranging from $854.295 to $855.17.
F15: These sales were executed in multiple trades at prices ranging from $855.41 to $856.2725.
F16: These sales were executed in multiple trades at prices ranging from $856.46 to $857.43.
F17: These sales were executed in multiple trades at prices ranging from $857.53 to $858.51.
F18: These sales were executed in multiple trades at prices ranging from $858.595 to $859.42.
F19: These sales were executed in multiple trades at prices ranging from $859.99 to $860.83.
F2: These sales were executed in multiple trades at prices ranging from $841.745 to $842.695. 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 (19) to this Form 4, upon request, to the staff of the Securities and Exchange Commission, the Issuer or a security holder of the Issuer.
F3: These sales were executed in multiple trades at prices ranging from $843.00 to $843.93.
F4: These sales were executed in multiple trades at prices ranging from $844.00 to $844.93.
F5: These sales were executed in multiple trades at prices ranging from $845.00 to $845.99.
F6: These sales were executed in multiple trades at prices ranging from $846.00 to $846.99.
F7: These sales were executed in multiple trades at prices ranging from $847.00 to $847.99.
F8: These sales were executed in multiple trades at prices ranging from $848.075 to $849.05.
F9: These sales were executed in multiple trades at prices ranging from $849.08 to $850.03.
--- Signature ---
/s/ /s/ Jae Kim as Attorney-in-Fact (2026-08-27)
