Company: SNWV
Filing Date: 2025-07-10
Form Type: DEFA14A
Source: 0001140361-25-025488
Chunk: 0

Company: SANUWAVE Health, Inc.
Filing Date: 2025-07-10
Form: DEFA14A
Chunk 0
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UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) 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 Pursuant to § 240.14a-12                  |

SANUWAVE Health, Inc. (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 
 14a-6(i)(1) and 0-11                                                           |