Company: FLYW
Filing Date: 2025-02-26
Form Type: S-8
Source: 0001193125-25-036883
Chunk: 0

Company: Flywire Corp
Filing Date: 2025-02-26
Form: S-8
Chunk 0
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As filed with the Securities and Exchange Commission on February 26, 2025 Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-8 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 FLYWIRE CORPORATION (Exact name of registrant as specified in its charter)

| Delaware                        |     | 27-0690799         |
| (State or other jurisdiction of 
 incorporation or organization)  |     | -I.R.S. Employer   
 Identification No. |

| 141 Tremont St #10                       
 Boston, MA                               |     |     02111 |
| (Address of Principal Executive Offices) |     | -Zip Code |

Flywire Corporation 2021 Equity Incentive Plan Flywire Corporation 2021 Employee Stock Purchase Plan (Full title of Plan) Michael Massaro Chief Executive Officer Flywire Corporation 141 Tremont St #10 Boston, MA 02111 (Name and address of agent for service) (617) 329-4524 (Telephone number, including area code, of agent for service) Copies to:

| David D. Gammell                                
 Keith J. Scherer John E.                        
 Maciejewski Gunderson Dettmer Stough Villeneuve 
 Franklin & Hachigian, LLP                       
 One Marina Park Drive, Suite 900                
 Boston, MA 02210 (617) 648-9100                 |     | Peter Butterfield               
 General Counsel & Chief         
 Compliance Officer              
 Flywire Corporation 141         
 Tremont St #10 Boston, MA 02111 
 (617) 329-4524                  |

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-acceleratedfiler, 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-2of 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 elected not to use