Company: ALGN
Filing Date: 2025-08-06
Form Type: S-8
Source: 0001097149-25-000066
Chunk: 3

Company: ALIGN TECHNOLOGY INC
Filing Date: 2025-08-06
Form: S-8
Chunk 3
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 so modified or superseded shall not be deemed, except as so modified or superseded, to constitute a part of this Registration Statement.

## Item 8. Exhibits.
| Exhibit Number 
 4.1            |     | Description                                                                                                                                                                                
 Align Technology, Inc. 2005 Incentive Plan (as amended on May 21, 2025)(incorporated by reference toExhibit 10.1 tothe Company’s Current Report onForm 8-Kfiledwith the SEC onMay21, 2025) |
|:---------------|:----|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 5.1*           |     | Opinion of Wilson Sonsini Goodrich & Rosati, Professional Corporation                                                                                                                      |
| 23.1*          |     | Consent of Wilson Sonsini Goodrich & Rosati, Professional Corporation (contained in Exhibit 5.1 hereto)                                                                                    |
| 23.2*          |     | Consent of Pricewaterhouse Coopers LLP, Independent Registered Public Accounting Firm                                                                                                      |
| 24.1*          |     | Power of Attorney (contained in signature page)                                                                                                                                            |
| 107*           |     | Calculation of Filing Fee Tables                                                                                                                                                           |

* Filed herewith.

### SIGNATURES
Pursuant to the requirements of the Securities Act of 1933, the registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and has duly caused this registration statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Tempe, State of Arizona, on the 6 th day of August 2025.

|     | ALIGN TECHNOLOGY, INC.                                       |
| By: | /s/ Julie Coletti                                            |
|     | Julie Coletti                                                
 Executive Vice President, Chief Legal and Regulatory Officer |

### POWER OF ATTORNEY
Each person whose signature appears below hereby constitutes and appoints, jointly and severally, Julie Coletti and Joseph M. Hogan as her or his attorney-in-fact, each with full power of substitution and resubstitution, in any and all capacities, to sign any and all amendments (including post-effective amendments) to this registration statement, and to file the same, with exhibits thereto and other documents in connection therewith, with the Securities and Exchange Commission, hereby ratifying and confirming all that said attorney-in-fact, or her or his substitute or