Company: NEWTP
Filing Date: 2025-08-21
Form Type: 8-A12B
Source: 0001587987-25-000159
Chunk: 0

Company: NewtekOne, Inc.
Filing Date: 2025-08-21
Form: 8-A12B
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<div align='center'>As filed with the Securities and Exchange Commission on August 21, 2025</div>

### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION

#### Washington, D.C. 20549

#### FORM 8-A

### FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES

#### PURSUANT TO SECTION 12(b) OR 12(g)

#### OF THE SECURITIES EXCHANGE ACT OF 1934

#### NEWTEKONE, INC.
<div align='center'>(Exact Name of Registrant as specified in its charter)</div>

| Maryland                     |     | 46-3755188         |
| (State or other Jurisdiction 
 of Incorporation)            |     | -I.R.S. Employer   
 Identification No. |

| 4800 T Rex Avenue, Suite 120            
 Boca Raton, Florida                     |     |     33431 |
| (Address of principal executive office) |     | -Zip Code |

Securities to be registered pursuant to Section 12(b) of the Act:

| Title of each class                                                  
 to be so registered                                                  |     | Name of each exchange on which 
 each class is to be registered |
| Depositary Shares, Each Representing a 1/40th Interest in a Share of 
 8.500% Fixed Rate Reset Non-Cumulative Perpetual Preferred           
 Stock, Series B                                                      |     | The Nasdaq Stock Market LLC    |

If this form relates to the registration of a class of securities pursuant to Section 12(b) of the Exchange Act and is effective pursuant to General Instruction A.(c), check the following box. ☒

If this form relates to the registration of a class of securities pursuant to Section 12(g) of the Exchange Act and is effective pursuant to General Instruction A.(d) or (c), check the following box. ☐

Securities Act registration statement file number to which this form relates (if applicable): 333-269452

Securities to be registered pursuant to Section 12(g) of the Act: None.

## Item 1. Description of Registrant’s Securities to be Registered.
The class of securities to be registered hereby are depositary shares (the “Depositary Shares”), each representing a 1/40th interest in a share of 8.500% Fixed-Rate Reset Non-Cumulative Perpetual Preferred Stock, Series B, par value $0.02 per share, with a