Associated Banc-Corp (ASB) functions as a bank holding company, offering a broad spectrum of banking and nonbanking financial solutions to individual consumers and businesses throughout Wisconsin, Illinois, and Minnesota.

The company's operations are divided into three distinct segments: Corporate and Commercial Specialty; Community, Consumer, and Business; and Risk Management and Shared Services. The Corporate and Commercial Specialty segment caters to businesses and institutions, providing diverse financing options such as commercial loans, lines of credit, real estate and construction financing, leasing, asset-based lending, and loan syndications.

It also offers treasury and cash management services, including business checking and interest-bearing deposit accounts, cash vault services, liquidity solutions, and tools for managing payables and receivables. Specialized financial services encompass interest rate risk management, foreign exchange solutions, and commodity hedging. Fiduciary services include the administration of pension and employee benefit plans, corporate agency services, and institutional asset management. Furthermore, it assists clients with investable funds, offering savings and money market accounts, IRAs, Certificates of Deposit (CDs), fixed and variable annuities, comprehensive brokerage services (full-service, discount, and online), investment advisory, and trust and investment management accounts. Conversely, the Community, Consumer, and Business segment focuses on serving individual consumers and smaller enterprises.

Its lending portfolio features residential mortgages, home equity loans and lines of credit, personal and installment loans, auto loans, and business loans and lines of credit. For daily banking needs, this segment provides deposit and transactional services like checking accounts, various card options (credit, debit, and pre-paid), online banking with bill pay functionalities, and money transfer services. The Risk Management and Shared Services segment provides internal support for the company's overall operations. As of December 31, 2021, Associated Banc-Corp maintained a network of 215 banking branches. Established in 1861, the company's headquarters are located in Green Bay, Wisconsin.