Company: STAA
Filing Date: 2025-12-09
Form Type: DEFA14A
Source: 0001193125-25-311988
Chunk: 1

Company: STAAR SURGICAL CO
Filing Date: 2025-12-09
Form: DEFA14A
Chunk 1
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 ☐ | Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 
 CFR 240.14a-12)                                                        |

| ☐ | Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) |

| ☐ | Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) |

Securities registered pursuant to Section 12(b) of the Act:

| Title of each class |     | Trading   
 Symbol(s) |     | Name of each exchange 
 on which registered   |
| Common              |     | STAA      |     | NASDAQ                |

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2of the Securities Exchange Act of 1934 (§240.12b-2of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

| Item 1.01. | Entry into a Material Definitive Agreement. |

On December 9, 2025, STAAR Surgical Company (the “Company”) entered into Amendment No. 2 (the “Amendment”) to the Agreement and Plan of Merger, dated August 4, 2025 (as amended, the “Amended Merger Agreement”), with Alcon Research, LLC (“Alcon”) and Rascasse Merger Sub, Inc. (“Merger Sub”). The Amendment, among other things, increases the consideration to be paid to the holders of shares of common stock, par value $0.01 per share, of the Company (“Company common stock”), if the merger of Merger Sub and the Company contemplated by the Amended Merger Agreement (the “Merger”), is consummated, to $30.75 per share of Company common stock in cash, without interest, subject to withholding taxes (the “Merger Consideration”), from $28.00 per share of Company common stock, in cash, without interest, subject to withholding taxes. In addition, the Amendment (i) provides