Additional Information About the Transaction and Where to Find It
This communication relates to a proposed transaction between Marvell Technology Inc. (“Marvell”) and Lumentum (the “Transaction”). In
connection with the Transaction, Marvell intends to file with the SEC a registration statement on Form S-4 (the “Form S-4”) that will include a joint proxy
statement for Marvell’s and Lumentum’s respective stockholders and that will also constitute a prospectus with respect to the shares of Marvell’s common stock to be issued in the Transaction (the “Joint Proxy
Statement/Prospectus”). The definitive Joint Proxy Statement/Prospectus (if and when available) will be mailed to stockholders of Marvell and Lumentum after the Form S-4 is declared effective by the SEC.
This communication is not a substitute for the Joint Proxy Statement/Prospectus or registration statement. INVESTORS AND SECURITY HOLDERS ARE URGED TO READ THE FORM S-4, JOINT PROXY STATEMENT/PROSPECTUS AND
ANY OTHER RELEVANT DOCUMENTS THAT MAY BE FILED WITH THE SEC IN CONNECTION WITH THE TRANSACTION OR INCORPORATED BY REFERENCE INTO THE FORM S-4 AND THE JOINT PROXY STATEMENT/PROSPECTUS (AS WELL AS ANY AMENDMENTS
OR SUPPLEMENTS THERETO), CAREFULLY AND IN THEIR ENTIRETY WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT MARVELL, LUMENTUM, THE TRANSACTION AND RELATED MATTERS. Investors and security holders will be able to obtain
free copies of the Form S-4 and Joint Proxy Statement/Prospectus and other documents containing important information about Marvell, Lumentum and the Transaction, once such documents are filed with the SEC
through the website maintained by the SEC at https://www.sec.gov. Copies of the documents filed with the SEC by Marvell will be available online free of charge on Marvell’s website at https://investor.marvell.com or by
contacting Marvell’s Investor Relations department at ir@marvell.com. Copies of the documents filed with the SEC by Lumentum will be available online free of charge on Lumentum’s website at https://investor.lumentum.com
or by contacting Lumentum’s Investor Relations department at investor.relations@lumentum.com.
Participants in the Merger
Solicitation
Marvell, Lumentum and certain of their respective directors and executive officers may be deemed to be participants in the
solicitation of proxies in respect of the Transaction. Information about the directors and executive officers of Marvell, including a description of their direct or indirect interests, by security holdings or otherwise, is set forth in
Marvell’s proxy statement for its 2026 Annual Meeting of Stockholders, which was filed with the SEC on May 13, 2026 and is available online at
https://www.sec.gov/Archives/edgar/data/0001835632/000110465926060253/tm261486-1_def14a.htm, under the headings “Proposal No. 1 Election of Directors”, “Executive Officers of the
Company”, “Security Ownership of Certain Beneficial Owners and Management”, “Executive Compensation” and “Certain Relationships and Related Party Transactions” and Marvell’s Annual Report on Form 10-K for the fiscal year ended January 31, 2026, which was filed with the SEC on March 11, 2026 and is available online at
https://www.sec.gov/Archives/edgar/data/0001835632/000183563226000011/mrvl-20260131.htm, under the heading “Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters”. To the extent holdings of
Marvell’s securities by its directors or executive officers have changed since the amounts set forth in Marvell’s definitive proxy statement for its 2026 Annual Meeting of Stockholders, such changes have been or will be reflected on
Initial Statement of Beneficial Ownership of Securities on Form 3, Statement of Changes in Beneficial Ownership on Form 4 or Annual Statement of Changes in Beneficial Ownership on Form 5 filed with the SEC, which are available online at
https://www.sec.gov/edgar/browse/?CIK=0001835632&owner=exclude. Information about the directors and executive officers of Lumentum, including a description of their direct or indirect interests, by security holdings or otherwise, is set
forth in Lumentum’s proxy statement for its 2026 Annual Meeting of Stockholders, which was filed with the SEC on October 6, 2026 and is available online at
https://www.sec.gov/Archives/edgar/data/0001633978/000130817926000420/lite2026-def14a.htm, under the headings “Proposal No. 1 Election of Directors”, “Executive Officers”, “Compensation Discussion and
Analysis”, “Security Ownership of Certain Beneficial Owners and Management” and “Related Person Transactions”. To the extent holdings of Lumentum’s securities by its directors or executive officers have changed
since the amounts set forth in Lumentum’s definitive proxy statement for its 2026 Annual Meeting of Stockholders, such changes have been or will be reflected on Initial Statement of Beneficial Ownership of Securities on Form 3, Statement of
Changes in Beneficial Ownership on Form 4, or Annual Statement of Changes in Beneficial Ownership on Form 5 filed with the SEC, which are available online at https://www.sec.gov/edgar/browse/?CIK=0001633978&owner=exclude. Other
information regarding the participants in the proxy solicitations and a description of their direct and indirect interests, by security holdings or otherwise, will be contained in the Joint Proxy Statement/Prospectus and other relevant materials to
be filed with the SEC regarding the Transaction when such materials become available. You may obtain free copies of these documents using the sources indicated above.
Cautionary Note Regarding Forward-Looking Statements
This communication contains “forward-looking statements” within the meaning of the federal securities laws, including Section 27A of the U.S.
Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Any statements contained in this communication that are not statements of historical facts may be deemed to be forward-looking statements.
In some cases, you can identify forward-looking statements by terms such as: “accelerate,” “anticipate,” “believe,” “can,” “continue,” “could,” “demand,”
“design,” “estimate,“expand,” “expect,” “intend,” “may,” “might,” “mission,” “need,” “objective,” “ongoing,”
“outlook,” “plan,” “potential,” “predict,” “project,” “should,” “target,” “will,” “would,” or the negative of these terms, or other
comparable terminology intended to identify statements about the future. All forward-looking statements by their nature address matters that involve risks and uncertainties, many of which are beyond our control and are not guarantees of future
results, such as statements about the consummation of the proposed transaction and the anticipated benefits thereof. These forward-looking statements include, but are not limited to, statements regarding expected timing and benefits of the
Transaction and the outlook for Marvell’s and Lumentum’s results of operations and financial condition, including potential synergies following the Transaction. It is uncertain whether any of the events anticipated by the forward-looking
statements will transpire or occur, or if any of them do, what impact they will have on the results of operations and