Company: INGVF
Filing Date: 2025-09-09
Form Type: 6-K
Source: 0001193125-25-199040
Chunk: 0

Company: ING GROEP NV
Filing Date: 2025-09-09
Form: 6-K
Chunk 0
---
### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION
Washington, DC 20549

FORM 6-K

Report of Foreign Private Issuer

Pursuant to Rule 13a-16or 15d-16

of the Securities Exchange Act of 1934

For September 9, 2025

Commission File Number 1-14642

ING Groep N.V.

Bijlmerdreef 106

1102 CT Amsterdam

The Netherlands

Indicate by check mark whether the registrant files or will file annual reports under cover of Form
20-F or Form 40-F.

Form
20-F ☒ Form 40-F ☐

THIS
REPORT ON FORM 6-K SHALL BE DEEMED TO BE INCORPORATED BY REFERENCE IN THE REGISTRATION STATEMENT ON FORM F-3 (FILE NO.
333-286734) OF ING GROEP N.V. AND TO BE A PART THEREOF FROM THE DATE ON WHICH THIS REPORT IS FURNISHED, TO THE EXTENT NOT SUPERSEDED BY DOCUMENTS OR REPORTS SUBSEQUENTLY FILED OR FURNISHED.

This Report contains the following:

| Exhibit No. 
 1.1         
 4.1         |     | Underwriting Agreement among ING Groep N.V. and ING Bank N.V., BofA Securities, Inc., BNP Paribas Securities Corp., Goldman Sachs                                                                                                                                 
 & Co. LLC, J.P. Morgan Securities LLC, Santander US Capital Markets LLC, Standard Chartered Bank AG and DBS Bank Ltd., as representatives of the several underwriters named therein, dated September 2, 2025.                                                     
 Fourth Supplemental Indenture between ING Groep N.V. and The Bank of New York Mellon, London Branch, as trustee, dated September                                                                                                                                  
 14, 2021, in respect of the $1,000,000,000 3.875% Perpetual Additional Tier 1 Contingent Convertible Capital Securities and the $1,000,000,000 4.250% Perpetual Additional Tier 1 Contingent Convertible Capital Securities (incorporated by reference to Exhibit 
 4.1 of ING Groep N.V.’s Report on Form 6-K filed on 14 September 2021).                                                                                                                                                                                           |
|:------------|:----|:------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 4.2         |     |