Executive Team


Tom Doyle is Chief Executive Officer and a member of the company’s board of directors. He joined Reterro in 2016, bringing more than 25 years of domestic and international experience growing and managing large-scale capital investment projects and organizations.

Prior to joining Reterro, Tom was an Executive Vice President at NRG Energy, the largest independent energy company in the United States, and the President and CEO of NRG’s renewable energy business (NRG Renew), a company he established in 2009 when he joined NRG. NRG Renew became one of the largest renewable energy companies in the world, with a wind and solar (PV and CSP) portfolio that exceeded 5000 MWs. 

Under Tom's leadership, NRG Renew successfully placed over $7.5 billion of capital that generated a significant return on equity, and an annual EBITDA contribution of over $550 million. These renewable assets ultimately became the foundation of the nation’s first publicly listed Yieldco (NYLD), which resulted in substantial market cap uplift to the NRG parent company.

Prior to NRG, Tom was an Executive Vice President of Commercial Execution for Bright Source Energy (BSE) where he led the $2.2 billion development effort for the world’s largest concentrated solar power project (Ivanpah). Prior to BSE, Tom spent 15 years living in Asia where he managed the development activity for utility scale infrastructure projects as Asia Pacific Managing Director for InterGen and Foster Wheeler Energy Corporation. 

Tom is a licensed Professional Engineer and holds an M.B.A. and a B.S., Mechanical Engineering from The University of Arizona.


Jack Chandler is Chief Investment Officer of Reterro, a member of the company’s board of directors and Chairman of the Investment Committee. Jack oversees the company’s real estate investment strategy, execution and performance monitoring.

Jack has more than 30 years experience as an executive officer at publicly held companies, where he led large-scale global real estate investment management platforms.

Prior to joining Reterro in 2017, Jack was Managing Director, Global Head and Chairman of BlackRock Inc.'s real estate business. With responsibility for BlackRock’s real estate business and investment platform, Jack oversaw the investment process and committees, developed and executed a strategic plan and expanded the geographic presence and product line offering through organic build-out and acquisitions. His 6-year tenure resulted in doubling the Assets Under Management of the business.

Prior to BlackRock, Jack spent 25 years with LaSalle Investment Management, and most recently served as the Global Chief Investment Officer and Executive Chairman for Asia Pacific. His prior roles included Chief Executive Officer for Asia Pacific, where he led a de novo startup that grew to over 200 employees and overseeing USD 12 billion in real estate assets in 5 countries. In these roles he oversaw the firm's real estate principal investment activities and risk management processes.

Jack has been an active leader in the real estate industry through a broad range of roles, including a founding member of the Asian Real Estate Association, a number of positions with the Urban Land Institute including Treasurer, Member of the Global Board of Trustees and Americas Executive Committee. He also serves on the Executive Committee at The Wharton School Real Estate Center and is a member of the Pension Real Estate Association.

Jack holds an M.B.A. from Harvard Business School and a B.S., Summa Cum Laude in Industrial Engineering/Operations Research from the University of Massachusetts.


As COO, Steve manages Field Operations and Engineering. He has over 30 years’ experience as senior executive at equipment manufacturing companies including: Representative Director/EVP at SEN Corporation/Tokyo; Corporate VP Marketing & Technology at Mattson Technology/California; CTO & VP Marketing & Technology at CFM Technologies/Pennsylvania & Tokyo;  President at RF Services/California.

Steve focuses on mission critical roles in corporations and his experience covers operations, Intellectual Property, complex analysis, technology innovation, safety and contracts. 

Steve has a BA in Chemistry/Philosophy from Saint Louis University.


As VP of Brownfield Development, Tad is responsible to execute the company’s brownfield development strategy. He is an entrepreneurial executive with over 30 years’ experience in multiple industries including healthcare and real estate development. 

Previously, Tad held positions as President/CEO of the Arizona Heart Foundation and COO of the Arizona Heart Institute, where he was responsible for significant market growth and value creation, while managing a $60 million P&L. During that time, he also owned and developed over 200,000 square feet of real property.

Tad holds a Bachelor of Science in Business with an emphasis in real estate and finance. 


Keith is responsible for developing and implementing a program that takes a customer’s environmental liability and turns it into asset by transferring liability, remediating the site, and partnering with others to redevelop the valuable real estate, while creating mutually beneficial relationships.

Prior to joining Reterro, Keith ran his own energy development consulting firm, where he helped clients develop large energy infrastructure projects, including liquefied natural gas (LNG) export terminals, and utility-scale solar projects. He played a critical role in the successful financing of a $10B LNG project along the Gulf Coast which is now under construction. He also played an important role in the early development of another greenfield LNG project near the Gulf Coast. In addition, he created significant value for multiple clients developing solar projects in multiple states. 

Previously, Keith was Vice President, Development for NRG Solar, where he successfully acquired and/or developed four projects totaling more than 150 MW now in operation. 


Mike is an accomplished real estate, environmental and risk management professional with over 30 years of experience in environmentally distressed real estate acquisition, development and investment. His experience includes asset acquisition and redevelopment, deal structuring, environmental liability quantification, asset investment analysis, capital raise and deployment, financial analysis, deal structuring, transaction underwriting, and market feasibility and highest and best use analysis. Mike  has been involved in managing and divesting surplus and environmentally impaired real estate assets with combined liability, restructuring and disposition costs in excess of $1.5 billion, identifying disposition, divestiture and reuse strategies resulting in asset value creation and cost reduction of over $250 million.

Prior to Reterro, Mike  was co-founder and Executive Vice President of a successful brownfield redevelopment company, responsible for acquisition and redevelopment of environmentally impaired real estate assets throughout the United States with development value in excess of $500 million.  He served has served as Chief Risk Officer managing environmental risk management programs, including negotiation and placement of environmental insurance and structuring over $75 million of environmental liability assumption contracts in support of environmentally impaired real estate transactions.  He is an expert in merger and acquisition due diligence to industry and has provided opinions on valuation for over $700 million of environmental liabilities for Fortune 500 companies for GAAP and Sarbanes-Oxley compliance purposes, as well as quantifying over $7 billion of federal and state response and NRD claims and costs in support of bankruptcy reorganization plans.  

Mike has completed over $200 million of hazardous waste remediation projects including the acquisition and sale of numerous contaminated properties with complex transactional and environmental issues involving CERCLA, RCRA, solid waste, and underground storage tanks.

Board of Directors



Kevin became the President and Chief Executive Officer of the Dakota, Minnesota & Eastern Railroad Corporation (DM&E) in 1996, and of the Iowa, Chicago & Eastern Railroad Corporation (IC&E) since its inception in 2002, until his semi-retirement in 2008 following the sale of the company. During his tenure, Mr. Schieffer renegotiated a series of legacy agreements DM&E had with C&NW, which led to the recapitalization of DM&E in 1994. The following year he negotiated with Union Pacific Railroad for the acquisition of the strategically important 203-mile Colony line in western South Dakota, which was consummated in 1996. In 2002, he negotiated the acquisition of 1,400 miles of the former CP/Soo lines, providing important access to the rail gateways of Chicago, Minneapolis and Kansas City, and to various river and Great Lake ports (IC&E). At the time of the 2007 sale, the DM&E/IC&E system had grown into the largest contiguous non-Class I railroad in the United States, was the only system with competitive connections to all 7 Class I railroads operating in North America, and had achieved the lowest operating ratio of any railroad in North America of any class.

Prior to Kevin’s work for DM&E, President George H.W. Bush appointed him  U.S. Attorney for South Dakota in 1991, an office he held until shortly after President Bush left office in 1993. Following his service as U.S. Attorney, he formed a law firm in Sioux Falls, SD, practicing until 1996. During that time, he served as legal counsel to DM&E, as well as numerous other national and regional clients.

From 1982 to 1991, Kevin worked for U.S. Senator Larry Pressler (R-SD).  He rose from mail clerk to Chief Legislative Counsel and finally to Chief of Staff in 1986, which he held until his appointment as U.S. Attorney for South Dakota.

Kevin currently serves on various private and public boards, including the South Dakota Board of Regents and the National Music Museum.

He received his BA from the University of South Dakota, graduating Phi Beta Kappa and with the school’s highest academic honors as University Scholar.  He received his law degree from Georgetown University in 1985, where he was also on the International Law Review. Kevin also later taught International Law at Georgetown University as an Adjunct Professor of Law during his last year in D.C.  He is the 9th of 12 children, and is married (Laney), with two daughters (Brooke and Annabella) and one son (Alexander).


Jeff Samberg is the Managing Director of Acadia Woods Partners, LLC, a New York based investment partnership that focuses primarily on early stage technology companies. Jeff lived in the San Francisco Bay Area for 15 years where he held a number of high-tech management roles, including Vice President of Corporate Strategy for PeopleSoft Inc., Vice President of Business Development for Wily Technology, and Entrepreneur in Residence for Greylock Partners. Jeff received his MBA from Stanford University's Graduate School of Business and his B.A. with high honors in Economics from Princeton University.