Company: STAA
Filing Date: 2025-10-28
Form Type: DEFA14A
Source: 0001193125-25-252202
Chunk: 0

Company: STAAR SURGICAL CO
Filing Date: 2025-10-28
Form: DEFA14A
Chunk 0
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UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934 Filed by the Registrant ☒ Filed by a party other than the Registrant ☐ Check the appropriate box:

| ☐ | Preliminary Proxy Statement |

| ☐ | Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) |

| ☐ | Definitive Proxy Statement |

| ☒ | Definitive Additional Materials |

| ☐ | Soliciting Material under § 240.14a-12 |

STAAR SURGICAL COMPANY (Name of Registrant as Specified In Its Charter) (Name of Person(s) Filing Proxy Statement, if other than the Registrant) Payment of Filing Fee (Check the appropriate box):

| ☒ | No fee required. |

| ☐ | Fee paid previously with preliminary materials. |

| ☐ | Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a6(i)(1) and 0-11. |

On October 27, 2025, the following email was sent to employees of STAAR Surgical Company (“STAAR”):

Update on Alcon Merger

To: All Employees of STAAR

Dear Team,

I’m writing to provide an update regarding our proposed merger with Alcon.

As I previously shared, we scheduled the Special Meeting of stockholders to vote on the Alcon merger proposal for October 23. Following discussions with
Alcon, we agreed to adjourn the meeting without a vote, and earlier today, we announced that we are postponing the Special Meeting to December 3. It is not uncommon in a contested M&A process for special meetings to be adjourned and
postponed to solicit votes. We agreed with Alcon to take these steps in light of ongoing discussions we are having with Alcon.

The Special Meeting will
now take place at 8:30 a.m. Pacific Time on December 3, 2025. The new record date for the Special Meeting is the close of business on October 24, 2025. Stockholders who hold shares as of the record date will be eligible to vote at the
postponed Special Meeting on December 3, 2025, and STAAR will be providing a notice of the meeting and