Our Team

Mark Pikus, President, IECA

Mark brings eight years of PACE financing experience as well as over 25 years of commercial real estate finance experience to the IECA. Mark has been an early proponent of PACE initiatives since 2012 and has worked around the country financing and developing PACE programs. His expertise ranges from working directly with units of government, program administrators, and property owners in the origination, underwriting and funding of PACE projects. Mark was a main contributor in the drafting of the Illinois Property Assessed Clean Energy Act.


Anna Maria Kowalik, Senior Vice President, IECA

Anna Maria is responsible for the business development of the IECA program including outreach, education and marketing. She has been active in the commercial real estate and property management industry for over 25 years. At a REIT, Anna Maria oversaw portfolios of over 30 retail properties consisting of 3.4 million square feet, with budgets close to $250MM. She is an active member of industry organizations and chambers of commerce, and liasons with municipal, county and state governments. Anna Maria provides outreach to the PACE market and trade associations.


Jason Stringer, Vice President

Jason Stringer is responsible for business development of the IECA C-PACE program including program development, outreach, and education.  Since 2015, Jason has been active in the C-PACE market where he led the development of the PACE Wisconsin program and provided guidance on best practices for PACE programs in Pennsylvania, Virginia and Illinois.  He is a real estate and clean energy finance professional with nearly 20 years of experience spanning project finance, development, municipal relations and PACE program administration.  Jason earned his bachelor’s degree from Michigan State University and a master’s degree in real estate & Urban Land Economics from the University of Wisconsin – Madison.


Janet R. Heintz, Secretary and Counsel, IECA

Janet has advised on PACE transactions and strategic business partnerships for over 8 years in addition to having been involved in the authorship of the Illinois PACE legislation. Janet is Assistant General Counsel/Corporate and Senior Vice President of a national real estate firm where she represents entities and sponsored funds in the primary business areas of PACE financings, commercial real estate bridge financings and investment advisors. In addition, Janet counsels on corporate structure, financing, marketing, insurance, miscellaneous human resource matters and other corporate wide initiatives. She is admitted to practice law in the State of Illinois and earned her BA from Purdue University and her law degree from Indiana University School of Law.


Dan Streit, Product Manager​

Dan facilitates the PACE financing application and approval process.  He collaborates with property owners, capital providers, and contractors in accessing C-PACE financing to enable commercial clean energy improvements.  He also advises on advancement of Program Guidelines and supports ongoing development of the PACE application management system (Project Center).  

Dan is an experienced product developer with expertise in commercial finance, clean energy for multifamily housing, and municipal sustainability planning.  He currently drives Slipstream’s Commercial Financing and Environmental Sustainability Services product lines, which include Slipstream’s engagement with C-PACE. Through these product offerings, he seeks to position the organization to provide financing solutions, consulting services, and software that enable property owners, businesses, and local governments to operate more efficiently and reduce negative environmental impact. 


Karen Weigert, Slipstream, Vice President, Business Strategy and Regional Operations​

Karen serves as Executive Vice President of Slipstream, a nonprofit focused on equitable decarbonization. Slipstream delivers finance, technology assessment, training and energy program implementation. Slipstream has expertise in building construction and operations, links between health and energy, and reaching underserved populations.

From 2011 to 2016 Karen served as the first Chief Sustainability Officer for the City of Chicago, finding innovative pathways and practical solutions to make Chicago more livable, competitive and sustainable. She led the planning and delivery of the award-winning Sustainable Chicago Action Agenda. This work includes launching Retrofit Chicago which now serves over 100 buildings representing over 50 million square feet and the Energy Benchmarking ordinance which requires benchmarking, verification and transparency on energy use in large buildings; buildings covered by the ordinance have saved over $60 million in energy costs. Karen brings broad-based communication expertise to her work, currently serving as the sustainability contributor for WBEZ’s Reset, and building on her experience speaking and writing with CBS This Morning, the Wall Street Journal, Chicago Tribune, and Crain’s.


Kimberly Johnston, Slipstream, Senior Marketing Manager​

Kim has developed and implemented target marketing, education and outreach (ME&O) for PACE Wisconsin (2014-2019).  Worked with stakeholders to develop the PACE Wisconsin logo and brand identity. She has also managed the PACE Wisconsin website, social media accounts, electronic communications with PACE target markets and eblasts to promote events, closed projects, key milestones and webinars. Kim created press releases, pitched articles and provided media kits to news outlets and trade media. She developed targeted messaging for C-PACE audiences and provided elevator speeches and talking points. She also developed and implemented a social media plan, inclusive of paid and organic posts, tile ads and keyword advertising. Kimberly created all print collateral, factsheets, sales decks, and trade show booth displays. She also worked with commercial property owners, capital providers, and developers to obtain testimonials for marketing purposes.  She then created PACE Wisconsin video clips for promotion on the website and in social media accounts and developed stakeholder engagement activities for PACE Wisconsin. 


Tim Mathison, Slipstream, Legal Counsel

Tim has over a decade of legal experience and five years of involvement with C-PACE.  He serves as Slipstream’s senior manager for C-PACE programs. Tim’s background in real estate combines private practice, title, and public sector experience in Illinois and Wisconsin.  He holds a J.D. from UIC John Marshall Law School in Chicago, a B.A. from the University of Wisconsin-Madison, and has completed additional legal study at Marquette University in Milwaukee and the Honorable Society of King's Inns in Dublin, Ireland.  Tim is admitted to practice law in the State of Wisconsin. 


Abby Johnson, President

Abby leads Abacus in helping its commercial real estate clients develop tailored clean energy real estate strategies, and then procuring the funding to execute these strategies. She works with clients ranging from affordable housing developers to commercial REITs to identify sources of capital, with a focus on Commercial PACE financing (C-PACE). Abigail has been working for the past eight years in C-PACE and is considered one of the industry’s few national experts with both project financing and program design experience. In Virginia, she is also known for her policy chops where she was instrumental in creating one of the most expansive C-PACE laws in the country that allows resiliency and stormwater measures as eligible costs. Prior to specializing in C-PACE, Abigail worked for over 15 years as an originator and financial underwriter of commercial real estate as well as an architect in Italy and as a building science consultant. She has a Bachelor of Architectural History from the University of Virginia and a Master’s in Business from Bocconi University in Milan, Italy.


Deb Rosiello, Project Manager

Deb is a project manager for Abacus and Virginia PACE Authority.  She provides day to day management of activities including supporting customer service requests and registering lenders, contractors and other service professionals. She has a broad entrepreneurial background having owned and managed several businesses. In these leadership positions, Deb developed significant expertise in overseeing commercial real estate investments as well managing partnerships and staff.  She has over 15 years experience in continuously changing and expanding enterprises with a central focus on sustainability and clean living.  Deb recently moved from Connecticut and is excited to bring her background and experience promoting clean energy projects through C-PACE.