Associated Bank Releases 2024 Sustainability Report

GREEN BAY, Wis. - September 25, 2025 - Associated Banc-Corp (NYSE: ASB) ("Associated") has released its 2024 Sustainability Report. This annual report highlights the company's progress on sustainability initiatives and related priorities. The report outlines measurable progress across its environmental, social and governance priorities. It details significant accomplishments that underscore the company's dedication to responsible business practices and its long-term commitment to creating enduring value for customers, communities, and colleagues.

Key highlights from the report include:

Community Commitments & Investments:

• Associated Bank was honored to once again receive the OCC's highest possible Community Reinvestment Act (CRA) rating of Outstanding.
• In 2024, Associated built on its community commitments by providing approximately $478 million in residential loans to support LMI and minority homeownership.
• Over 60,600 hours of recorded volunteer time, including nearly 5,300 CRA-qualified service hours, equal to $2.0 million in community service.

Colleague Experience:

• Associated was named a 2025 Top Workplaces USA award, as well as earing multiple regional workplace honors - again.
• In 2024, 21% of colleagues advanced their careers at Associated, through nearly 835 internal promotions or lateral moves.
• During 2024, more than 600 leaders attended over 30 unique individual leadership courses, with nearly 330 individual career coaching sessions and continued to offer workshops to help colleagues create meaningful development plans.
• Since the inception of the mentorship program in 2022, the program has logged nearly 3,400 self-reported mentoring hours.

Customer Experience:

• Associated Bank was awarded #1 for Retail Banking Customer Satisfaction in the Upper Midwest Region by J.D. Power in the 2024 U.S. Retail Banking Satisfaction Study. In this study, customers also rated Associated Bank #1 in four of seven dimensions: trust, account offerings, allowing me to bank how and when I want (convenience) and helping me save time and money (value).
• In 2024, the branch experience maintained a record-high 91% "completely satisfied" score.
• Associated Bank was recognized by Fannie Mae for mortgage solution delivery provided in the 2024 Servicer Total Achievement and Rewards™ (STAR™) Program for the 12th time, in recognition for our effective, standardized processes that help drive their performance and operational success.

Environmental Sustainability:

• Saved 319 short tons in waste through document shredding efforts which not only protected the environment but customers' security at the same time. Additionally, 79% of customers opted to receive information electronically, helping reduce paper waste.
• Approximately $1.7 billion in outstanding credit commitments to develop, construct and operate more than 190 wind, solar, battery, hydroelectric and geothermal generating facilities across North America.
• Approximately 4 million kWh average reduction in annual energy consumption across the real estate portfolio, driven by Associated's multi-year LED retrofit program and building automation program. Associated will continue to be thoughtful on the rollout of efficient systems in the coming years.
• As of the end of 2024, Associated has extended approximately $1.7 billion in credit commitments to develop, construct and operate more than 200 wind, solar, battery, hydroelectric and geothermal generating facilities across North America

Governance:

• Associated has adopted guidelines established by the OCC, the Federal Reserve Board (FRB) and the Consumer Financial Protection Bureau (CFPB) for establishing the scope of Third-Party Management (TPM) Policy. This policy provides the framework, governance and guidance for identifying, selecting, monitoring and reporting third-party provider risk to align performance with company policies, business objectives, laws, regulations and risk tolerances.
• Established a Third-Party Code of Conduct which sets forth expectations that third parties Associated Bank works with upholds the highest standards of ethics and complies with all applicable laws and regulations.

This report provides an overview of Associated's sustainability activities and commitments. It covers the period from January 1, 2024, through December 31, 2024, except where noted.

Associated's Sustainability Report is available at Investor.AssociatedBank.com under the Governance tab > Sustainability.

ABOUT ASSOCIATED BANC-CORP

Associated Banc-Corp (NYSE: ASB) has total assets of $44 billion and is the largest bank holding company based in Wisconsin. Headquartered in Green Bay, Wisconsin, Associated is a leading Midwest banking franchise, offering a full range of financial products and services from nearly 200 banking locations serving more than 100 communities throughout Wisconsin, Illinois, Minnesota and Missouri. The company also operates loan production offices in Indiana, Kansas, Michigan, New York, Ohio and Texas. Associated Bank, N.A. is an Equal Housing Lender, Equal Opportunity Lender and Member FDIC. More information about Associated Banc-Corp is available at https://www.associatedbank.com.