Company: STAA
Filing Date: 2025-11-17
Form Type: DEFA14A
Source: 0001193125-25-284603
Chunk: 1

Company: STAAR SURGICAL CO
Filing Date: 2025-11-17
Form: DEFA14A
Chunk 1
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, the information provided in the proxy statement relating to the Merger Agreement and the transactions contemplated thereby continue to apply. This Supplement and the documents referred to in this Supplement should be
read in conjunction with the proxy statement, the annexes and exhibits to the proxy statement and the documents referred to in the proxy statement, each of which should be read in its entirety. All page references herein are to pages in the proxy
statement, except where otherwise specified. To the extent that information in this Supplement differs from, updates or conflicts with information contained in the proxy statement, the information in this Supplement supersedes the information in the
proxy statement. For clarity, new text within restated paragraphs from the proxy statement (excluding the notice of the Special Meeting) is highlighted with bold, underlined text, while deleted text is bold and stricken-through.

As previously disclosed, on August 4, 2025, STAAR entered into an Agreement and Plan of Merger (as it
may be amended from time to time, including by Amendment No. 1 on November 7, 2025, the “Merger Agreement”) with Alcon Research, LLC, a Delaware limited liability company (“Alcon”), and Rascasse Merger Sub, Inc., a
Delaware corporation and a wholly owned direct subsidiary of Alcon (“Merger Sub”), pursuant to which, subject to the satisfaction or waiver of the conditions set forth therein, Merger Sub will merge with and into STAAR (the
“Merger”), with STAAR surviving the Merger as a wholly owned subsidiary of Alcon. If the Merger is completed, STAAR stockholders will receive, in exchange for each share of STAAR common stock held immediately prior to the Merger, $28.00
in cash, without interest and subject to any applicable tax withholding. The STAAR Board of Directors (the “Board”) has approved the Merger Agreement and has recommended that STAAR stockholders vote in favor of adopting the Merger
Agreement.

As disclosed by STAAR on a Current Report on Form 8-K filed on November 7, 2025,
on November 7, 2025, Alcon, Merger Sub and STAAR entered into Amendment No. 1 to the Merger Agreement (the “Amendment”). The Amendment provides, among other things, for a 30-day go-shop period beginning on November 7, 2025 and continuing until 11:59 p.m., Eastern Time, on December 6