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Our Team

Serving Greater Sauk Prairie

Brett Kirner — Brett Kirner Senior Vice President, Chief Information Officer Email

Meet Brett Kirner

Senior Vice President, Chief Information Officer

As well as being a Sauk Prairie native, Brett has been with Bank of Prairie du Sac for over 11 years. Currently, Brett oversees the Information Technology, Deposit Operations, and Digital Banking departments.

Brett Kirner — Brett Kirner Senior Vice President, Chief Information Officer Email

Meet Brett Kirner

Senior Vice President, Chief Information Officer

As well as being a Sauk Prairie native, Brett has been with Bank of Prairie du Sac for over 11 years. Currently, Brett oversees the Information Technology, Deposit Operations, and Digital Banking departments.

Roxi Maier — Roxi Maier Senior Vice President, Chief Financial Officer Email

Meet Roxi Maier

Senior Vice President, Chief Financial Officer

Roxi has more than 38 years of banking experience, with 30 of those years at Bank of Prairie du Sac. She enjoys working with customers and co-workers, alike. Roxi has been an active member of the community, serving on many boards over the years.

Roxi Maier — Roxi Maier Senior Vice President, Chief Financial Officer Email

Meet Roxi Maier

Senior Vice President, Chief Financial Officer

Roxi has more than 38 years of banking experience, with 30 of those years at Bank of Prairie du Sac. She enjoys working with customers and co-workers, alike. Roxi has been an active member of the community, serving on many boards over the years.

Steve Ploetz — Steve Ploetz President & CEO Email

Meet Steve Ploetz

President & CEO

President and CEO Steve Ploetz has been with Bank of Prairie du Sac since 1977 and within those 49 years, Steve has aspired to be your partner and trusted advisor. Born and raised in Sauk Prairie, Steve is dedicated to his community and community banking.

Steve Ploetz — Steve Ploetz President & CEO Email

Meet Steve Ploetz

President & CEO

President and CEO Steve Ploetz has been with Bank of Prairie du Sac since 1977 and within those 49 years, Steve has aspired to be your partner and trusted advisor. Born and raised in Sauk Prairie, Steve is dedicated to his community and community banking.

Personal Banking

Phyllis Dresser — Phyllis Dresser Vice President, Retail Email

Meet Phyllis Dresser

Vice President, Retail

Phyllis has close to 40 years in banking experience with nearing 26 years at the Bank of Prairie du Sac. When Phyllis first arrived at the Bank, she started as a Teller, transitioning in the Customer Service Department to Branch Manager, AVP and finally her current position as Retail Vice President. Her main focus — not only for herself, but emphasizing to her staff — is the importance of quality customer service and building relationships. Phyllis has been greatly involved with Bank and Chamber events, while outside of work, she holds a position on the board for the Friends of Sauk Prairie Health as well as different committees within her church.

Phyllis Dresser — Phyllis Dresser Vice President, Retail Email

Meet Phyllis Dresser

Vice President, Retail

Phyllis has close to 40 years in banking experience with nearing 26 years at the Bank of Prairie du Sac. When Phyllis first arrived at the Bank, she started as a Teller, transitioning in the Customer Service Department to Branch Manager, AVP and finally her current position as Retail Vice President. Her main focus — not only for herself, but emphasizing to her staff — is the importance of quality customer service and building relationships. Phyllis has been greatly involved with Bank and Chamber events, while outside of work, she holds a position on the board for the Friends of Sauk Prairie Health as well as different committees within her church.

Mortgage Lending

Crystal Lautenbach — Crystal Lautenbach VP, Mortgage Lending Email NMLS #451162

Meet Crystal Lautenbach

VP, Mortgage Lending

Crystal has more than 20 years of experience in banking. She has a passion for helping customers finance the home of their dreams, whether they are looking to buy or build. Born and raised in Sauk Prairie, she has an in-depth understanding of the local home market and community features. Crystal also offers home equity loans and lines of credit for those looking to use the equity in their home to finance that special project. She is actively involved in the Sauk Prairie community, volunteering for Friends of Sauk Prairie Parks and Recreation.

Crystal Lautenbach — Crystal Lautenbach VP, Mortgage Lending Email NMLS #451162

Meet Crystal Lautenbach

VP, Mortgage Lending

Crystal has more than 20 years of experience in banking. She has a passion for helping customers finance the home of their dreams, whether they are looking to buy or build. Born and raised in Sauk Prairie, she has an in-depth understanding of the local home market and community features. Crystal also offers home equity loans and lines of credit for those looking to use the equity in their home to finance that special project. She is actively involved in the Sauk Prairie community, volunteering for Friends of Sauk Prairie Parks and Recreation.

Business Banking

Richelle Alt — Richelle Alt Commercial Loan Officer Email

Meet Richelle Alt

Commercial Loan Officer

Richelle joined our bank's team in July 2025.

Richelle Alt — Richelle Alt Commercial Loan Officer Email

Meet Richelle Alt

Commercial Loan Officer

Richelle joined our bank's team in July 2025.

Bradley Prohaska — Bradley Prohaska Senior Vice President, Chief Credit Officer Email NMLS #709657

Meet Bradley Prohaska

Senior Vice President, Chief Credit Officer

Brad develops a personal relationship with each business he helps. He has more than 20 years of experience in banking and lending. Brad strives to help his customers grow and reach their goals, knowing that they are the foundation of our community.

Bradley Prohaska — Bradley Prohaska Senior Vice President, Chief Credit Officer Email NMLS #709657

Meet Bradley Prohaska

Senior Vice President, Chief Credit Officer

Brad develops a personal relationship with each business he helps. He has more than 20 years of experience in banking and lending. Brad strives to help his customers grow and reach their goals, knowing that they are the foundation of our community.

Casey Koenig — Casey Koenig Senior Vice President, Chief Lending Officer Email NMLS #1196923

Meet Casey Koenig

Senior Vice President, Chief Lending Officer

Casey enjoys working with businesses to help them grow. He has a wide range of banking expertise, from commercial lending to cash management. Casey stays involved in the community as a volunteer and as part of the local Chamber of Commerce. He looks forward to forming long-lasting business relationships.

Casey Koenig — Casey Koenig Senior Vice President, Chief Lending Officer Email NMLS #1196923

Meet Casey Koenig

Senior Vice President, Chief Lending Officer

Casey enjoys working with businesses to help them grow. He has a wide range of banking expertise, from commercial lending to cash management. Casey stays involved in the community as a volunteer and as part of the local Chamber of Commerce. He looks forward to forming long-lasting business relationships.

Ag Lending

Mark Ladsten — Mark Ladsten Vice President, Commercial & Ag Lending Email

Meet Mark Ladsten

Vice President, Commercial & Ag Lending

Growing up in Sauk Prairie, Mark is no stranger to our community, Bank of Prairie du Sac, or agriculture. In fact, his aspirations to pursue a career in Agricultural Lending were initiated in High School when his Agriculture Instructor & FFA Advisor suggested he seek a loan to purchase pigs. The positive lending experience Mark had at Bank of Prairie du Sac sparked intrigue and interest in becoming a lender and one day working here! Mark attended the University of Wisconsin-River Falls, where he earned a Bachelor of Science in Agricultural Business and Animal Science. After college, he was delighted to return to Sauk Prairie to live and work. He grew his agricultural knowledge and experience while working two years in sales at a local Dairy Supply, five years at an area Ag Cooperative, and nearly three years as an Agricultural Lender. An outgoing and friendly person, Mark is proud of his longstanding history in the community and appreciates the many relationships he has built over the years. His main focus is making sure area businesses and farmers are able to achieve goals they set for themselves. He has a passion for transition planning and values the family farm legacy. Away from the Bank, Mark is active in the community – as a member of the Sauk Prairie FFA Alumni & Supporters, participating in Chamber events, assisting with fundraising efforts for Culver Community Park, plus he has served in many leadership roles with the Wisconsin State FFA Alumni Council. When Mark’s not working or volunteering, he enjoys spending time with his family and pursuing their goal of operating a hobby farm.

Mark Ladsten — Mark Ladsten Vice President, Commercial & Ag Lending Email

Meet Mark Ladsten

Vice President, Commercial & Ag Lending

Growing up in Sauk Prairie, Mark is no stranger to our community, Bank of Prairie du Sac, or agriculture. In fact, his aspirations to pursue a career in Agricultural Lending were initiated in High School when his Agriculture Instructor & FFA Advisor suggested he seek a loan to purchase pigs. The positive lending experience Mark had at Bank of Prairie du Sac sparked intrigue and interest in becoming a lender and one day working here! Mark attended the University of Wisconsin-River Falls, where he earned a Bachelor of Science in Agricultural Business and Animal Science. After college, he was delighted to return to Sauk Prairie to live and work. He grew his agricultural knowledge and experience while working two years in sales at a local Dairy Supply, five years at an area Ag Cooperative, and nearly three years as an Agricultural Lender. An outgoing and friendly person, Mark is proud of his longstanding history in the community and appreciates the many relationships he has built over the years. His main focus is making sure area businesses and farmers are able to achieve goals they set for themselves. He has a passion for transition planning and values the family farm legacy. Away from the Bank, Mark is active in the community – as a member of the Sauk Prairie FFA Alumni & Supporters, participating in Chamber events, assisting with fundraising efforts for Culver Community Park, plus he has served in many leadership roles with the Wisconsin State FFA Alumni Council. When Mark’s not working or volunteering, he enjoys spending time with his family and pursuing their goal of operating a hobby farm.

Human Resources

Cathy Yanke — Cathy Yanke AVP, Human Resources Email

Meet Cathy Yanke

AVP, Human Resources

Cathy enjoys welcoming new employees into the bank team and supporting them as they grow in their bank career. She partners closely with both management and employees to support the banks promise to do what is right for our employees while helping to meet bank goals. Involvement in the community is important to Cathy and she coordinates and delivers Mobile Meals for the bank while also being active in SP FFA Alumni and Supporters, church boards, and a variety of other volunteer activities. She looks forward to building additional relationships while recruiting new employees as the bank continues to grow and change.

Cathy Yanke — Cathy Yanke AVP, Human Resources Email

Meet Cathy Yanke

AVP, Human Resources

Cathy enjoys welcoming new employees into the bank team and supporting them as they grow in their bank career. She partners closely with both management and employees to support the banks promise to do what is right for our employees while helping to meet bank goals. Involvement in the community is important to Cathy and she coordinates and delivers Mobile Meals for the bank while also being active in SP FFA Alumni and Supporters, church boards, and a variety of other volunteer activities. She looks forward to building additional relationships while recruiting new employees as the bank continues to grow and change.

The Rest of the Team

Nolan Breunig — Nolan Breunig AVP - Credit Supervisor Email

Meet Nolan Breunig

AVP - Credit Supervisor

Born and raised in Sauk Prairie, Nolan works closely with Bank of Prairie du Sac lenders and loan department to analyze and underwrite credits for businesses across various industries. He is excited to be in his hometown working with and supporting the growth and development of community businesses.

Nolan Breunig — Nolan Breunig AVP - Credit Supervisor Email

Meet Nolan Breunig

AVP - Credit Supervisor

Born and raised in Sauk Prairie, Nolan works closely with Bank of Prairie du Sac lenders and loan department to analyze and underwrite credits for businesses across various industries. He is excited to be in his hometown working with and supporting the growth and development of community businesses.

Jackie Sliter — Jackie Sliter AVP, Executive Assistant-Director of Shareholder Relations Email

Meet Jackie Sliter

AVP, Executive Assistant-Director of Shareholder Relations

Jackie continues to enjoy a great career while forming so many business and personal relationships. She says, “The best part of her career is being a part of a great community that strives to reinvest in each other and lend a hand to thrive and grow.” Born and raised in Sauk Prairie, she has seen a lot of changes and is thankful to be a part of it. When not at work, you can find Jackie out walking, biking or working her flower garden.

Jackie Sliter — Jackie Sliter AVP, Executive Assistant-Director of Shareholder Relations Email

Meet Jackie Sliter

AVP, Executive Assistant-Director of Shareholder Relations

Jackie continues to enjoy a great career while forming so many business and personal relationships. She says, “The best part of her career is being a part of a great community that strives to reinvest in each other and lend a hand to thrive and grow.” Born and raised in Sauk Prairie, she has seen a lot of changes and is thankful to be a part of it. When not at work, you can find Jackie out walking, biking or working her flower garden.

Stacy Stormer — Stacy Stormer AVP Deposit Operations Supervisor Email

Meet Stacy Stormer

AVP Deposit Operations Supervisor

With 30 years of banking experience – the majority at Bank of Prairie du Sac, Stacy has a diverse background as a Community Banker. She has experience in retail banking, lending, compliance, and operations. Giving back and making a difference are the aspects of Community Banking Stacy relishes most. Away from work, Stacy enjoys spending quality time with family and friends.

Stacy Stormer — Stacy Stormer AVP Deposit Operations Supervisor Email

Meet Stacy Stormer

AVP Deposit Operations Supervisor

With 30 years of banking experience – the majority at Bank of Prairie du Sac, Stacy has a diverse background as a Community Banker. She has experience in retail banking, lending, compliance, and operations. Giving back and making a difference are the aspects of Community Banking Stacy relishes most. Away from work, Stacy enjoys spending quality time with family and friends.

Gina Wyttenbach — Gina Wyttenbach AVP Senior Credit Analyst Email

Meet Gina Wyttenbach

AVP Senior Credit Analyst

Gina works directly with Bank of Prairie du Sac loan officers to analyze and underwrite credits across various industries. Although not originally from the area, she is proud to call the Sauk Prairie community home.

Gina Wyttenbach — Gina Wyttenbach AVP Senior Credit Analyst Email

Meet Gina Wyttenbach

AVP Senior Credit Analyst

Gina works directly with Bank of Prairie du Sac loan officers to analyze and underwrite credits across various industries. Although not originally from the area, she is proud to call the Sauk Prairie community home.

Amy Yanke — Amy Yanke VP, Controller Email

Meet Amy Yanke

VP, Controller

For the past 12 years Amy has been pursuing her career at Bank of Prairie du Sac. She grew up in Sauk Prairie area and still loves to support small businesses and all that the community has to offer. Outside of work Amy holds board positions on the Sauk Prairie Community Club and Sauk Prairie FFA Alumni and Supporters.

Amy Yanke — Amy Yanke VP, Controller Email

Meet Amy Yanke

VP, Controller

For the past 12 years Amy has been pursuing her career at Bank of Prairie du Sac. She grew up in Sauk Prairie area and still loves to support small businesses and all that the community has to offer. Outside of work Amy holds board positions on the Sauk Prairie Community Club and Sauk Prairie FFA Alumni and Supporters.

Heather Zick — Heather Zick AVP, Loan Operations Email

Meet Heather Zick

AVP, Loan Operations

A native of Sauk Prairie, Heather returned to her hometown following college to begin her banking career in 2014. She joined Bank of Prairie du Sac in spring 2020 and currently is an Assistant Vice-President and Loan Operations Supervisor. Looking back at her first days here, also the start of Covid, she recalls it being an interesting time with PPP loans, historically low interest rates, and having to social distance. Away from work, Heather enjoys adventuring with her golden retriever, spending time with family and friends, and seeing live music.

Heather Zick — Heather Zick AVP, Loan Operations Email

Meet Heather Zick

AVP, Loan Operations

A native of Sauk Prairie, Heather returned to her hometown following college to begin her banking career in 2014. She joined Bank of Prairie du Sac in spring 2020 and currently is an Assistant Vice-President and Loan Operations Supervisor. Looking back at her first days here, also the start of Covid, she recalls it being an interesting time with PPP loans, historically low interest rates, and having to social distance. Away from work, Heather enjoys adventuring with her golden retriever, spending time with family and friends, and seeing live music.

Bank of Prairie du Sac Board of Directors - Craig Culver, Julie Coquard, Steve Ploetz - Chairman, John McFarlane, Mitch Breunig, J. Patricia Yanke