Skip to main content
2025 Bridge Conference Main banner
Left Banner Ad

Leslie Biggins Mollsen

Owner & President
American City Bureau

Leslie B. Mollsen is the owner and President of American City Bureau, Inc., the nation’s original fundraising consulting firm to nonprofit organizations. The 112-year-old family business is dedicated to building a culture of philanthropy for every client it serves. Leslie’s career with ACB began as Director of Communications and over the next 35 years, she worked her way up the company ladder, becoming its leader and co-owner. Leslie specializes in major donor development and has served hundreds of nonprofit organizations. Her niche audience within the company is faith-based institutions, particularly women religious.

Leslie is a volunteer leader/Secretary of The Nonprofit Alliance’s (TNPA) Catholic Development Council (CDC), the voice of nonprofits to promote, protect and strengthen the philanthropic sector. In 2022, Leslie received Pursuant’s “40 Over Forty Award,” which celebrates the dedicated nonprofit professionals who consistently set a high bar for excellence in the nonprofit sector–elevating their organization, the people around them, and the lives of the people who are making a difference in the world. She recently completed six years of Board service on the National Catholic Community Foundation (NCCF) and is past Board Member of the Edmundite Missions of Selma, Alabama, an organization dedicated to feeding, clothing and providing shelter to the poor and marginalized, and fighting systemic poverty in the Deep South. In that role, she served as the first Chair of the Advancement Committee.

Leslie was honored to write a chapter in the book: Ask for the World, Catholic Sisters and the Spirituality of Fundraising. She ranked as the No. 3 most effective fundraising consultant in the nation in an independent survey by Michael Chatman, the Ambassador of Giving and creator of #WhyiGive, one of Twitter’s most popular social media chats in philanthropy. Leslie was a devout volunteer of the National Catholic Development Conference (NCDC) for twenty-five years and served on its Board of Directors. Prior to this, she was honored with NCDC’s Distinguished Service Award, given annually to a member who had made an unusually significant contribution to the cause of religious and charitable fundraising. She served on the Giving USA Foundation Board for nine years. The Giving USA Foundation is the publisher of the renowned publication Giving USA, the standard on annual giving trends in the United States. Finally, Leslie was named Alumni-of-the-Year by her high school, St. Edward Catholic Central High School of Elgin, Illinois.

Leslie is a published author and speaks at many conferences and seminars nation-wide on the topic of major donor development, volunteerism, leadership, capital campaigns and campaign preparedness. Leslie is a graduate of Marquette University and resides in Milwaukee, Wisconsin. She and her husband, Daniel, have two adult sons, Owen and Eli.

Disclosure information not submitted.

Presentation(s):