Company: SNWV
Filing Date: 2025-08-22
Form Type: S-8
Source: 0001628280-25-041027
Chunk: 0

Company: SANUWAVE Health, Inc.
Filing Date: 2025-08-22
Form: S-8
Chunk 0
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<div align='center'>As filed with the Securities and Exchange Commission on August 22, 2025</div>

#### Registration No. 333-

### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION

#### Washington, D.C. 20549

#### FORM S-8

### REGISTRATION STATEMENT

#### UNDER

#### THE SECURITIES ACT OF 1933

#### SANUWAVE Health, INC.
<div align='center'>(Exact name of registrant as specified in its charter)</div>

| Nevada                            |     | 20-1176000         |
| (State or other Jurisdiction      
 of Incorporation or Organization) |     | -I.R.S. Employer   
 Identification No. |

#### 9600 West 76th Street

#### Eden Prairie, Minnesota 55344
<div align='center'>(Address of principal executive offices and zip code)</div>

#### SANUWAVE Health, Inc. 2024 Equity Incentive Plan
<div align='center'>(Full title of the plan)</div>

| Morgan C. Frank               |
| Chief Executive Officer       |
| SANUWAVE Health, Inc.         |
| 9600 West 76th Street         |
| Eden Prairie, Minnesota 55344 |
| (952) 656-1029                |

<div align='center'>(Name, address and telephone number, including area code, of agent for service)</div>

| Copies to:                        |
| Ben A. Stacke                     |
| Griffin D. Foster                 |
| Faegre Drinker Biddle & Reath LLP |
| 2200 Wells Fargo Center           |
| 90 South Seventh Street           |
| Minneapolis, Minnesota 55402      |
| (612) 766-7000                    |

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

| Large accelerated filer☐ |     | Accelerated filer☐         |
| Non-accelerated filer☒   |     | Smaller reporting company☒ 
 Emerging growth company☐   |

If an emerging growth company, indicate by check mark if the registrant has