Company: ASB
Filing Date: 2025-05-01
Form Type: S-8
Source: 0001104659-25-043349
Chunk: 0

Company: ASSOCIATED BANC-CORP
Filing Date: 2025-05-01
Form: S-8
Chunk 0
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<div align='center'>As filed with the Securities and Exchange Commission
on May 1, 2025</div>

Registration No. 333-________

<div align='center'>UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM S-8

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933

ASSOCIATED BANC-CORP

(Exact Name of Registrant as Specified in Charter)</div>

| Wisconsin                                |                          39-1098068 |
| (State or other jurisdiction of          | -I.R.S. Employer Identification No. |
| incorporation or organization)           |                                     |
| 433 Main Street                          |                                     |
| Green Bay, Wisconsin                     |                               54301 |
| (Address of Principal Executive Offices) |                           -Zip Code |

<div align='center'>ASSOCIATED BANC-CORP 2025 EQUITY INCENTIVE PLAN

(Full Title of Plan)

Randall J. Erickson

Executive Vice President, General Counsel and Corporate Secretary

433 Main Street

Green Bay, Wisconsin 54301

(Name and address of agent for service)

(920) 491-7500

(Telephone number, including area code, of agent
for service)</div>

Indicate by check mark whether
the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, 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-2 of the Exchange Act.

| Large accelerated filer   | x | Accelerated filer       | ¨ | Non-accelerated file | ¨ |
| Smaller reporting company | ¨ | Emerging growth company | ¨ |                      |   |

If an emerging growth company, indicate by check
mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting
standards provided pursuant to Section 7(a)(2)(B) of the Securities Act. ¨

<div align='center'>PART I</div>

The documents containing the information specified
in Part I of this Registration Statement on Form S-8 (the “Registration Statement”) will be sent or given to participants
in the plan listed on the cover of this