Marvell to Buy Lumentum for $115 Billion in All-Stock Mega-Deal

Marvell has agreed to acquire Lumentum in an all-stock deal with an enterprise value of $115 billion, including debt, and an equity value of roughly $80 billion. The chip designer will pay 4.5 of its own shares for each Lumentum share. Announced in a signed agreement, the transaction ranks among the largest acquisitions in tech history.

The scale is easy to understate. Microsoft paid $68.7 billion for Activision Blizzard in 2022; Dell paid $67 billion for EMC in 2016. At $115 billion enterprise value, Marvell's bid exceeds both by a wide margin — roughly $46 billion more than the Microsoft-Activision deal and $48 billion more than Dell-EMC.

Who stands on both sides of the table?

One detail stands out: the two companies share a major shareholder, Nvidia. In March, as part of a multi-year agreement to purchase Lumentum's advanced laser components, Nvidia invested $2 billion to support Lumentum's R&D efforts and fab expansion. Later that same month, Nvidia announced a separate $2 billion investment in Marvell, aimed at strengthening Marvell's optical networking and chips portfolio.

That means the GPU maker has $4 billion deployed across both merger partners within a single month. The source does not say whether Nvidia played any role in bringing the two companies together, and neither company has addressed that question in the announcement.

What does the deal structure look like?

The terms are straightforward on paper:

• Consideration: 4.5 Marvell shares per Lumentum share, all stock.
• Enterprise value: $115 billion, including debt.
• Equity value: approximately $80 billion.
• Implied debt load: roughly $35 billion, the gap between the two figures — a sum Lumentum's balance sheet carries into the combined company.

An all-stock structure means Lumentum shareholders receive ownership in the combined company rather than cash. For that roughly $80 billion equity portion, they will bear the risks and rewards of Marvell's stock after closing.

When will it actually close?

Do not expect a quick close. Marvell expects the transaction to complete in the first half of calendar year 2028 — meaning the deal could sit in regulatory and shareholder review for well over a year. Both companies' shareholders must approve it, and regulators must agree as well.

That is a long window in which either condition could fail. The announcement offers no detail on which regulatory jurisdictions will review the deal, and no termination terms or breakup fees are disclosed in the source material.

Why is Marvell paying this much?

Marvell says that with Lumentum, it will become a leader in AI connectivity, with products that range from chips to data centers. The claim frames the deal as a play on the AI infrastructure buildout, where optical components and custom silicon increasingly sit at the center of data center networking.

The company has not published revenue or synergy figures tied to the deal in this announcement. Leadership claims about becoming a "leader in AI connectivity" rest on the combined product portfolio, not on disclosed financial projections.

Nvidia's dual stakes add an unspoken dimension. The GPU maker is simultaneously a customer of Lumentum's laser components — under a multi-year purchase agreement — and a backer of Marvell's optical portfolio. Whether that positioning influenced deal pricing or timing is not addressed in the announcement.

What happens next?

The deal now moves to shareholder votes and regulatory review, with a target close in the first half of 2028. If either approval fails, the largest optical-networking consolidation in tech history stops at the signing stage.