Company: MYGN
Filing Date: 2025-11-04
Form Type: 8-K/A
Source: 0000899923-25-000109
Chunk: 0

Company: MYRIAD GENETICS INC
Filing Date: 2025-11-04
Form: 8-K/A
Chunk 0
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### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION

#### Washington, D.C. 20549

#### FORM 8-K/A
<div align='center'>(Amendment No. 1)</div>

### CURRENT REPORT

#### Pursuant to Section 13 or 15(d)

#### of the Securities Exchange Act of 1934
<div align='center'>Date of Report (Date of earliest event reported): November 3, 2025</div>

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

| Delaware                        |     | 0-26642     |     | 87-0494517         |
| (State or other jurisdiction of 
 incorporation)                  |     | -Commission 
 File Number |     | -IRS Employer      
 Identification No. |

#### 322 North 2200 West

#### Salt Lake City, Utah 84116
<div align='center'>(Address of principal executive offices) (Zip Code)

Registrant's telephone number, including area code: ( 801) 584-3600</div>

#### Not applicable
<div align='center'>(Former name or former address, if changed since last report)</div>

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

| ☐ |     | Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)                  |
| ☐ |     | 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 Stock, $0.01 par value |     | MYGN      |     | Nasdaq Global Select Market               |

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule