Marvell Agrees to Buy Lumentum in $115 Billion All-Stock Deal
The combination would pair Marvell's chips and interconnect technology with Lumentum's lasers and optical components as AI data centers shift from copper toward light.
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Illustrative photo of fiber-optic cable; it is not Marvell or Lumentum hardware, and it is not a data center named here. Photo: Lucent_Designs_dinoson20 / Pixabay, Pixabay Content License.
Marvell Technology and Lumentum announced on November 2, 2026 a definitive agreement under which Marvell will acquire Lumentum in an all-stock transaction. The announcement puts an implied enterprise value of about $115 billion on Lumentum, one of the largest deals in the technology sector this year. The companies filed the joint announcement with the Securities and Exchange Commission as a Form 425.
Under the terms, each Lumentum share will be exchanged for 4.5 Marvell shares. The companies calculate that this equals about $1,132 per Lumentum share, a premium of about 23.9% to Lumentum's unaffected closing price on October 28, 2026. That was the last trading day before market speculation about a potential transaction began. After the deal closes, existing Marvell shareholders would own about 67% of the combined company on a fully diluted basis, and Lumentum shareholders about 33%.
Who would run it, and when
Governance is set out in the announcements. Matt Murphy will remain chairman and chief executive of the combined company. Three Lumentum directors, including President and CEO Michael Hurlston, will join Marvell's board, which would then have seven members. The companies expect the transaction to close in the first half of 2028, subject to approval by both companies' stockholders, regulatory clearances and other customary conditions. Several outlets, including Datacenter Magazine and Mobile World Live, report that timeline.
The stated rationale is technical. In the joint release, Murphy said AI infrastructure is undergoing a fundamental architectural shift toward optical connectivity. The companies argue that rising bandwidth needs and the physical limits of copper connections are pushing the industry toward optical technology. As a result, electrical and optical components are increasingly designed together, rather than assembled as separate modules.
What each company brings
Marvell contributes electrical and optical interconnect, network switching, custom processors known as XPUs, and advanced semiconductor technology. Lumentum contributes high-performance lasers, optical transceivers, optical circuit switching and compound semiconductor manufacturing, including indium phosphide process technology. Light Reading and SiliconANGLE both note that Lumentum's lasers are based on indium phosphide, a material that generates light more efficiently than silicon. Datacenter Magazine reports that both companies already share Nvidia as a partner, and that Nvidia signed multi-year agreements with Lumentum in March 2026 that include a purchase commitment and a $2 billion investment. That detail comes from one outlet and was not checked against Lumentum's filings in this review.
At a glance
| Item | Detail | Status |
|---|---|---|
| Structure | All stock; 4.5 Marvell shares per Lumentum share | Form 425 |
| Value | About $115 billion enterprise value | Companies |
| Price | About $1,132 a share; 23.9% premium to Oct. 28 close | Companies |
| Ownership | About 67% Marvell, 33% Lumentum, fully diluted | Companies |
| Close | First half of 2028, if approved | Companies |
| Synergies | More than $1 billion annual run-rate cost savings | Company projection |
The companies have made several claims about the benefits, and these are self-reported. They put the total addressable market for the combined business at about $550 billion. They expect more than $1 billion in annual run-rate cost synergies. Marvell expects the deal to be accretive to non-GAAP earnings per share in the first year after completion, and it expects the transaction to improve its long-term revenue growth and margins. None of these projections has been independently verified.
Constellation Research reports that the combined company would have about $17.7 billion in annual revenue, which would place it among the largest AI infrastructure companies. That figure is from a single outlet and does not appear in the company releases reviewed. The same Constellation item describes the total addressable market as $550 million, a figure that conflicts with the companies' $550 billion. This article uses the companies' figure and does not use Constellation's market number.
Marvell confirmed on the same day that its preliminary revenue for the third quarter of fiscal 2027 is in line with its previous forecast. Lumentum released its first-quarter results on the same day, according to Techzine. Those results are the company's own and were not reviewed in full for this article.
SiliconANGLE described the transaction as one of the largest in tech history. Analysts quoted in secondary coverage have framed it as a way for Marvell to compete more directly with rival Broadcom. That is commentary, not a finding.
What to watch
The stockholder votes at both companies; regulatory reviews, which the companies say are required without naming specific jurisdictions in the releases reviewed; whether Marvell provides updated deal financing, synergy or integration detail in later filings; Lumentum's ability to keep supplying major customers through the integration period; and whether the shift from copper to optical connectivity proceeds at the pace the companies describe. Given the first-half 2028 closing target, most of the decisive events are months or years away. The deal was announced November 2, 2026.
How we reported this
Verified against the joint SEC Form 425: the deal structure, exchange ratio, implied enterprise value, implied price, premium, ownership split, and the October 28, 2026 reference date. The first-half 2028 expected close, governance changes, and the stated rationale are confirmed by multiple outlets using the same figures. The addressable market, cost synergies, and accretion expectation are company projections. Constellation's combined-revenue figure and Datacenter Magazine's report of Nvidia's March 2026 agreements with Lumentum were not independently verified.
Sources
- Marvell Technology and Lumentum, joint announcement filed as SEC Form 425, November 2, 2026. SEC EDGAR
- SiliconANGLE, "Marvell to acquire optical component maker Lumentum in massive $115B deal," November 2, 2026. siliconangle.com
- Light Reading, "Marvell strikes $115B deal for Lumentum," November 2, 2026. lightreading.com
- Evertiq, "Marvell to acquire Lumentum in $115 billion all-stock deal," November 2, 2026. evertiq.com
- Constellation Research, "Marvell bulks up via $115 billion Lumentum acquisition," November 2, 2026. constellationr.com
DailyMech used AI tools to help research and draft this article; it was fact-checked by our editors.