Midwest One Bank Executive and Leadership Team

October, 2026

Leadership Overview

Midwest One Bank has 7 executives leading key functions including information technology, marketing, regional banking, market leadership, and mortgage banking.

Committed to community-focused financial solutions, Midwest One Bank delivers comprehensive banking services across Iowa, Minnesota, Wisconsin, Florida, and Colorado while maintaining a legacy of stability since 1934.

Leadership Roles at Midwest One Bank

  • Regional President - Mark Erickson
  • Market President - Brad Amthauer
  • Vive President, Mortgage Banking Officer - Jessica Siems
  • Market President - Scott Bromelkamp
  • Market President - Cindy Roberts
  • Chief Information Officer - Paul Ho-Sing-Loy
  • Senior Vice President and Chief Marketing Officer - Elda Macias
  • Mark Erickson - Regional President

    Mark Erickson, the Regional President at Midwest One Bank, directs high-level banking operations and strategic business development across designated territories. Erickson oversees the performance of local branches, ensuring alignment with the broader financial holding company's objectives. By fostering relationships with commercial clients and community stakeholders, the Regional President drives loan portfolio growth and deposit acquisition. Mark Erickson manages regional teams to maintain high standards of service excellence and operational efficiency. This leadership role involves evaluating market conditions to adjust lending strategies and mitigate risk. Through the oversight of regional financial performance, the Regional President contributes to the overall stability and profitability of the bank. Erickson coordinates with other executive leaders to implement corporate policies and expand the bank's influence in key markets. By focusing on sustainable growth and client retention, the Regional President strengthens the bank's competitive position. Ultimately, Erickson ensures that regional operations reflect the core values and mission of the organization.

    Brad Amthauer - Market President

    Brad Amthauer, the Market President at Midwest One Bank, executes localized business strategies to capture market share and enhance client relationships within specific geographic zones. Amthauer focuses on commercial lending, small business development, and local community outreach to drive revenue growth. By managing a dedicated team of banking professionals, the Market President ensures that service delivery meets the unique needs of the local economy. Brad Amthauer collaborates with regional leadership to align market-specific goals with the bank's overarching financial objectives. This role involves identifying new business opportunities, managing credit risk, and maintaining high levels of customer satisfaction. Through active participation in local business networks, the Market President builds the bank's presence and reputation. Amthauer monitors market trends to adapt service offerings and maintain a competitive edge. By prioritizing relationship-based banking, the Market President fosters long-term loyalty among clients. Ultimately, Amthauer drives the success of the bank's local operations through disciplined management and strategic focus.

    Jessica Siems - Vive President, Mortgage Banking Officer

    Jessica Siems, the Vive President, Mortgage Banking Officer at Midwest One Bank, directs the residential lending division and mortgage product strategy. Siems oversees the end-to-end mortgage process, from application and underwriting to closing, ensuring compliance with federal and state regulations. By managing relationships with real estate partners and prospective homeowners, the Vive President, Mortgage Banking Officer drives volume in the home loan portfolio. Jessica Siems coordinates with internal teams to streamline loan processing and improve turnaround times for clients across the bank's operational footprint. This role involves analyzing interest rate environments and housing market data to provide competitive mortgage solutions. Through the development of specialized lending programs, the Vive President, Mortgage Banking Officer addresses the diverse financing needs of the community. Siems monitors loan performance and credit quality to ensure the long-term health of the mortgage portfolio. By focusing on customer education and transparent communication, the Vive President, Mortgage Banking Officer facilitates successful homeownership experiences for all clients.

    Scott Bromelkamp - Market President

    Scott Bromelkamp, the Market President at Midwest One Bank, architects the operational strategy for specific banking markets to maximize profitability and service quality. Bromelkamp focuses on wealth management integration and private banking services to serve high-net-worth individuals and businesses. By leading local teams, the Market President ensures that financial solutions are tailored to the specific economic landscape of the assigned territory. Scott Bromelkamp collaborates with the executive team to implement corporate initiatives and maintain consistent service standards. This role involves managing complex client portfolios, overseeing credit approvals, and driving business development efforts. Through the cultivation of strategic partnerships, the Market President expands the bank's reach and influence. Bromelkamp analyzes market data to identify emerging opportunities and mitigate potential risks. By emphasizing a consultative approach to banking, the Market President builds enduring trust with clients. Ultimately, Bromelkamp drives the financial performance of the market through expert leadership and a commitment to excellence.

    Cindy Roberts - Market President

    Cindy Roberts, the Market President at Midwest One Bank, directs the retail banking operations and customer service initiatives within the assigned market. Roberts focuses on branch efficiency, staff development, and the expansion of consumer banking products to increase market penetration. By overseeing daily branch activities, the Market President ensures that all operations align with the bank's commitment to community-focused service. Cindy Roberts collaborates with regional and corporate leadership to implement new banking technologies and service models. This role involves managing operational budgets, ensuring regulatory compliance, and fostering a culture of professional excellence among branch staff. Through the analysis of customer feedback and service metrics, the Market President continuously improves the client experience. Roberts identifies local community needs to tailor banking solutions that support individual and family financial goals. By prioritizing accessibility and reliability, the Market President strengthens the bank's position as a primary financial institution. Ultimately, Roberts drives growth through consistent service delivery and community engagement.

    Paul Ho-Sing-Loy - Chief Information Officer

    Paul Ho-Sing-Loy, the Chief Information Officer at Midwest One Bank, directs the technological infrastructure supporting all financial operations. Ho-Sing-Loy manages cybersecurity protocols, digital banking platforms, and data integrity across the multi-state footprint. By modernizing core banking systems, the Chief Information Officer ensures seamless transaction processing for clients in Iowa, Minnesota, Wisconsin, Florida, and Colorado. Paul Ho-Sing-Loy collaborates with executive leadership to align digital transformation initiatives with long-term growth objectives. This role involves overseeing IT governance, software development lifecycles, and network resilience to protect sensitive financial assets. Through the implementation of scalable cloud solutions, the Chief Information Officer optimizes operational efficiency and enhances the overall customer experience. Ho-Sing-Loy maintains rigorous compliance standards while driving innovation in fintech integration. Ultimately, the Chief Information Officer secures the technological foundation necessary for the bank to remain competitive in a rapidly evolving digital landscape.
    Paul Ho-Sing-Loy

    Elda Macias - Senior Vice President and Chief Marketing Officer

    Elda Macias, the Senior Vice President and Chief Marketing Officer at Midwest One Bank, architects the brand strategy and market positioning across all operational regions. Macias oversees integrated marketing campaigns, public relations, and customer acquisition initiatives designed to expand the bank's footprint in Iowa, Minnesota, Wisconsin, Florida, and Colorado. By analyzing consumer behavior and market trends, the Senior Vice President and Chief Marketing Officer develops targeted outreach programs that strengthen community engagement. Elda Macias coordinates with regional leadership to ensure consistent brand messaging and service delivery. This role involves managing digital advertising, social media presence, and corporate communications to elevate the bank's profile. Through data-driven insights, the Senior Vice President and Chief Marketing Officer identifies growth opportunities and refines product positioning to meet diverse client needs. Macias drives brand loyalty by emphasizing the bank's commitment to personalized financial service. Ultimately, the Senior Vice President and Chief Marketing Officer sustains the bank's reputation as a trusted financial partner.

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    Frequently Asked Questions Regarding Midwest One Bank Top Executives and Leadership Team

    Who leads Midwest One Bank?
    Midwest One Bank is led by Mark Erickson (Regional President), along with executives such as Brad Amthauer (Market President) and Jessica Siems (Vive President, Mortgage Banking Officer).
    Who is part of Midwest One Bank’s executive team?
    The executive team of Midwest One Bank includes leaders such as Mark Erickson (Regional President), Brad Amthauer (Market President), Jessica Siems (Vive President, Mortgage Banking Officer) and other senior executives.
    How many executives does Midwest One Bank have?
    Midwest One Bank has 7 executives leading key business areas.
    What roles are included in Midwest One Bank’s leadership team?
    The leadership team of Midwest One Bank includes roles such as Regional President, Market President, Vive President, Mortgage Banking Officer, Market President, Market President.