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“We’re proud to be joining forces to provide scale and capability for continued growth and expansion to better serve our clients. Corterra will continue to remain a US company as it is today, with added expansion across the United States and into Canada.” Ted Lindholm, Corterra Solutions Corterra and Endeavour Join Forces Corterra Solutions and Endeavour Solutions join forces in support of their clients and continued growth. June 2025. Corterra Solutions and Endeavour Solutions are pleased to announce that they are joining forces in support of complementary Microsoft solutions and services to support continued growth and expansion. “We’re proud to be joining forces to provide scale and capability for continued growth and expansion to better serve our clients. Corterra will remain a US company as it is today, with added expansion across the United States and into Canada.” Ted Lindholm, Corterra Solutions “Joining forces with Corterra is strategic for Endeavour as we set our sights on being a leader in Microsoft Business Applications across North America. We are proud of our continued growth and expansion as we further invest in bringing ERP and CRM clients to the cloud.” Madhu Vajpey, Endeavour Solutions. As a Managed Services Partner for IT services, Microsoft Dynamics 365 Finance & Operations, CRM, Business Central, and other Microsoft platforms, Corterra serves large US clients in the upper mid-market and enterprise space. This is a strong complement to Endeavour’s Microsoft CRM and Power Platform clients, also in the mid-market and enterprise, as well as Endeavour’s SMB and Mid-market clients using Business Central and Dynamics GP ERP applications. By joining forces, both teams will support a continued expansion across North America. “We see a lot of market potential for Managed Services for Dynamics 365 F&O and providing access to our talented team of Microsoft consultants for support, training, integrations, optimization, and sustainment efforts.” Steve Ewing, Endeavour Solutions. Learn more about our teams and specialty brands. www.corterrasolutions.com www.endeavoursolutions.com www.gpsupportnorth.com www.purelycrm.com Our Approach Results Driven Understand client business challenges and develop data and technology solutions that solve them. Client Focused Work collaboratively with client executives and teams to get the job done with minimal disruption to their business. Rapid Development Deliver valued solutions quickly and build on successes. Technology Strategy & Roadmap As your company evolves and grows, technology and data can make or break your journey. Corterra Solutions helps clients develop or validate technology strategies that fuel their growing businesses. We’ll work with you to understand your company’s objectives and map the journey from your current technology state to a future state that gives you the functionality, efficiency, and clarity needed to take your business to the next level. With extensive business leadership, management, and consulting experience, our executive team is well-positioned to align business and technology to achieve enterprise objectives Cloud Migration & Support Does your IT roadmap include a transition to the cloud? Cloud solutions in Microsoft Azure and Microsoft 365 are more affordable than ever and can relieve your IT organization from the burden of having to manage critical network servers and hardware. Whether migrating on-premise virtual machines to Azure, or legacy SharePoint to SharePoint online, Corterra has the expertise to ensure your cloud migration is a success. Our broad cloud migration experience, including strategic planning and cost analysis, data migration, and cloud security, will provide you confidence in a seamless transition. If your plans include moving to the cloud, we can help. Microsoft Dynamics 365 & Power Platform Microsoft Dynamics 365 is a powerful solution that allows you to capture, integrate, analyze, and share information across all areas of your business. For over 25 years, we’ve been delivering accounting and ERP solutions that connect data and business processes across sales, supply chain, manufacturing, and finance. You’re in good hands, as our team designs, deploys, and supports a solution that provides clarity to effectively manage resources, optimize revenue and costs, and prioritize efforts. Worried that “off the shelf” software will not meet your industry-specific needs? Corterra’s technical team fulfills any and all gaps between your business and the software with low-code and pro-code solutions on the Power Platform. Analytics & Insight Data is the fuel that drives today’s businesses. Corterra works closely with your team to understand the business’s need and develop the data models that make data accessible and actionable. Business leaders are tired of lobbing requests to IT and waiting for reports to be delivered. With Microsoft Power BI, we enable self-service access to critical data so business leaders can identify opportunities to optimize performance, grow the business, and maximize customer relationships. Technology Infrastructure Services Nothing is more frustrating than technology that isn’t available, reliable, or supported when you need it. Corterra takes this burden off your plate. We design, deploy, and manage IT infrastructures for clients. We’ve got you covered: from PCs, personal devices, and business applications to the networks that connect them, the security that protects them, and the helpdesk that supports them. Corterra will take care of the technology, giving you the freedom to focus on meaningful work that drives your company’s success. Cybersecurity Cybersecurity is at the top of the IT agenda for most technology organizations. Is your IT infrastructure safe? Corterra helps our clients reduce cybersecurity risks through a cost effective, common sense cybersecurity approach based on NIST 800-171. This journey begins with an evaluation of the current state of your network, people, and processes. Then, we will work with you to develop a plan that addresses the most significant risks and sets a roadmap for continued progress.

Discover how our technology company delivers exceptional results for our clients. Explore our case studies from various industries. Located in Lisle, IL. Decades of Delivering Results When you need more from your technology partner, we’re here to deliver it. Whether you seek greater efficiency, growth, or a reliable outsourced team to take your IT capabilities further, Corterra has decades of experience working with global organizations as a trusted technology consulting partner to get things done right. Industries Served Aerospace & Defense Financial Services Healthcare Services Logistics Manufacturing Case Studies

Open positions. Come thrive at Corterra. Come thrive at Corterra Be empowered to own, create, respectfully challenge, and collaborate. At Corterra, our people are the heart and soul of our business. We approach all that we do with curiosity, energy and persistence. In fact, our reputation is one of perseverance and a genuine refusal to fail — or what some people call “grit.” This inspires us to believe there is no cap on growth for both our team members’ careers and our clients. By nurturing the development of our employees’ skill sets, fostering a collaborative culture, and rewarding experience with growth opportunities, we offer roles for every stage of professional life. We believe that success will follow anyone who appreciates endless learning, new challenges, and relationship-building along the way. The relationships and limitless opportunities our people enjoy enable them to capitalize on their talents, develop new skills and set their own goals — which create a uniquely positive synergy between Corterra and the companies we serve. Employee Benefits Corterra is committed to offering a competitive benefits package to our employees. Comprehensive healthcare, vision, dental Competitive salary, performance bonus, and paid time off On site company-paid fitness center 401k savings plan and profit sharing Current Openings Corterra is currently hiring for the following positions. If no positions show below, we are not actively hiring for specific needs. While these are the positions we are actively hiring for, do not let that deter you from submitting your resume if you have interest in working for Corterra. We are always looking for talent! To submit your resume, please send an email to careers@corterrasolutions.com with the position name in the subject.

Mike Kelch Co-Founder Mike’s comprehensive and versatile information technology expertise ranges from financial assurance services to detailed manufacturing planning solutions. Over his 35-year career, he has helped clients reengineer their business processes and adopt comprehensive, cost-efficient IT management and planning systems. Mike is an IT industry pioneer. Early in his career, while employed as an accountant at Ernst & Young, Mike championed the adoption of the first personal computers to execute financial audits. He led the EY’s initiative to train over 1,000 professionals in North and South America to use automation and data analytics to more efficiently conduct Fortune 500 company audits while simultaneously decreasing audit risk. Having grown up on a farm and worked for several family owned manufacturing companies, Mike was intrigued by the adaptive, creative nature of small business and their persistent, risk–taking spirit. EY Audit Partners frequently asked him to assist their small clients with financial system challenges which introduced Mike to the large industry gap in providing software and services to mid-market companies. In 1994, Mike founded Corterra Solutions (formerly Heartland Business Systems), where he capitalized on the opportunity to provide mid-market businesses with the same leading-edge information technology leveraged by Fortune 500 firms. To meet the challenges of delivering system solutions to the mid-market, Mike adopted the following principles allowing Corterra to flourish: Low-Cost, High-Value Services – Mid-market companies have limited funding. Mike adopted the Microsoft Suite of enterprise tools to enable clients to rapidly adapt their processes using more cost-efficient and flexible technology that adds value to their bottom line. Corterra’s tools and techniques allowed clients to deploy Fortune 1000 ERP functionality at 10 percent of the cost. As an example, they helped a global manufacturing and distribution company replace a 40-year-old system with an accumulated $60 million investment for less than $5 million, and simultaneously reduced the annual support footprint to twenty percent of the previous cost annual cost. Ownership and Accountability – Entrepreneurs have little time for systems projects. For ERP deployments to succeed, the Corterra team needed to take complete ownership of the project. Mike created a culture of accountability for every phase of system implementation to ensure success for clients and for Corterra. Mike attributes his “just get ‘er done” entrepreneurial mindset to his days growing up on a farm. Competitive Differentiation – Deploying a system to meet the client’s competition was not sufficient. Corterra consistently deployed systems that allowed their clients to adapt faster, execute decisions quicker, and deliver higher quality services and products. Mike led Corterra Solutions to participate in client strategic planning and understand the client’s long-term plans. In fact, some of Corterra clients’ business owners attribute their wealth to Corterra’s impact on their business. Corterra helped prepare clients for more lucrative mergers and acquisition deals, often increasing their business value by over 20 percent, and as high as 50 percent. Mike holds several Board roles: the Downers Grove Economic Development Commission, Choose DuPage Economic Development Commission, Rev3 DuPage Incubator, and Information Technology Advisor Board Member at the University of Illinois-Chicago. Mike holds a Masters in Business Administration in Finance from the University of Chicago, and a Bachelor of Science in Accounting and Information Systems from the University of Illinois. He is a Certified Public Accountant, Certified Information Systems Auditor, and Certified Production and Inventory Management. Other Team Members Lynda Kelch Co-Founder Ted Lindholm President Shawn McCormick Solution Delivery Lead Nicolette Fife Controller, Finance Lead Marc Huber Director of Infrastructure Joe Bonomo Principal Architect Jordan Higgins Principal Architect Jacob Brindle Solution Architect Doug Wolsfeld Infrastructure Manager Ryan Kenna Manager, Solution Delivery Will Parker Manager, Solution Delivery

Lynda Kelch Co-Founder Lynda served as Corterra’s Chief Financial Officer since its inception more than 25 years ago. She led Corterra Solutions as a woman-owned business during the company’s early years of growth, and currently serves as a client service executive, supporting the financial aspects of the engagements. Lynda’s background in accounting, her financial information systems auditing expertise, plus her knowledge of Microsoft Dynamics 365, makes her an invaluable resource for managing the financial aspects of client relationships. She is a key subject matter expert for financial system implementations, executing risk-based information system audits, and ensuring IT implementations are authorized, secure, compliant, and meet the appropriate standards to support clients’ organizational strategy and objectives. As an Ernst and Young alumni, Lynda understands the importance of professionalism, diversity, and client trust in the delivery of client services. At Corterra, Lynda forges close relationships with clients over the duration of engagements, and as a result they trust Corterra to assist with implementations and data migration projects involving their most sensitive financial information. Her audit and control experience provides a unique value add for Corterra clients. Each year, Lynda leads the completion of a critical information systems controls preparation for Sarbanes-Oxley 440 compliance at Corterra clients. Using risk-based techniques, she helps engineer cyber controls into client’s systems that are effective as well as efficient. She has led Corterra’s effort to consistently embed automated controls into the ERP systems and initiated the introduction of artificial intelligence into the control processes. Under Lynda’s leadership, Corterra Solutions achieved a 100% success rate for technology project delivery in an industry where 50% success is the norm. Lynda also oversees all system installations, evolving ERP deployments through the testing, remediation, and training phase to ensure successful go-lives. For a large health care client, she played a primary role in the turnaround of a troubled multi-year $50 million technology project with another IT services provider, ensuring a successful outcome with Corterra’s expertise. Lynda earned her Bachelor of Science in Accountancy from Indiana University. She is a Certified Public Accountant and a Certified Information Systems Auditor. Other Team Members Mike Kelch Co-Founder Ted Lindholm President Shawn McCormick Solution Delivery Lead Nicolette Fife Controller, Finance Lead Marc Huber Director of Infrastructure Joe Bonomo Principal Architect Jordan Higgins Principal Architect Jacob Brindle Solution Architect Doug Wolsfeld Infrastructure Manager Ryan Kenna Manager, Solution Delivery Will Parker Manager, Solution Delivery