Mr. Papapostolou has served as our Director and Chairman since March 2023. Mr. Papapostolou has served as the chief financial officer of Icahn Enterprises L.P. ("IEP") since November 2021. Mr. Papapostolou has served as a director of IEP since December 2021 and as its secretary since April 2020. Mr. Papapostolou previously served as the chief accounting officer of IEP from April 2020 to December 2023 and in various progressive accounting positions at IEP from March 2007 to March 2020. Previously, Mr. Papapostolou worked at Grant Thornton LLP in their audit practice. Mr. Papapostolou has served as director of Viskase Companies Inc., a meat casing company, since April 2020. Mr. Papapostolou received his Master of Business Administration from The Peter J. Tobin College of Business at Saint John's University and his Bachelor of Business Administration from Frank G. Zarb School of Business at Hofstra University.
Mr. Lamp has served as our Director since January 2018. Mr. Lamp has also served as our President and Chief Executive Officer and as the Executive Chairman of our affiliate the general partner of CVR Partners, LP ("CVR Partners") since December 2017, and as a member of the board of directors of the general partner of CVR Partners since January 2018, including as Chairman of the board from January 2018 to March 2023. Mr. Lamp has more than 40 years of technical, commercial and operational experience in the refining and chemical industries. He previously served as a director of the general partner of our affiliate, CVR Refining, LP, an independent downstream energy limited partnership, from January 2018 to February 2019, and prior to joining CVR Energy, served in various senior executive roles for Western Refining, Inc., Northern Tier Energy LP, and HollyFrontier Corporation. Mr. Lamp graduated from Michigan State University with a Bachelor of Science in Chemical Engineering.
Mr. Firestone has served as our Director since April 2020. Since 2006, Mr. Firestone has served as chairman and chief executive officer at Prodigy Pictures Inc., a leader in the production of quality film, television and cross-platform media. Mr. Firestone has served on the board of directors and the audit committee of Enzon Pharmaceuticals, Inc., a public acquisition vehicle, since June 2022 and on the board of directors of Sandridge Energy, Inc., an independent oil and gas company engaged in the development, production and acquisition of oil and gas properties, since May 2021. Mr. Firestone has served on the board of directors for the Academy of Canadian Cinema and Television and the Academy of Television Arts and Sciences International Council in Los Angeles. Mr. Firestone previously served on the board of directors and the audit committee of Voltari Corporation, a company in the business of acquiring, financing and leasing commercial real properties from 2011 to 2019. Mr. Firestone has led two successful initial public offerings and, in 1998, was nominated for entrepreneur of the year. Mr. Firestone obtained a degree in commerce from McMasters University.
Mr. Gary has served as our Director since September 2018. Mr. Gary has served as senior managing director of Icahn Enterprises L.P. ("IEP"), a diversified holding company engaged in a variety of businesses, including investment, energy, automotive, food packaging, real estate, and home fashion, and has been employed by IEP since November 2010. At IEP, Mr. Gary is responsible for monitoring portfolio company operations, implementing operational value enhancement and leading operational activities in areas including, technology, merger integration, supply chain, organization transformation, real estate, recruiting, business process outsourcing, Selling General & Administrative cost reduction, strategic IT projects, and executive compensation. Mr. Gary has served as president and chief executive officer of Cadus Corporation ("Cadus"), a company engaged in the acquisition of real estate for renovation or construction and resale, from March 2014 until June 2018. Prior to both IEP and Cadus, Mr. Gary had been employed by Icahn Associates Corporation, an affiliate of IEP, in various roles since June 2003, most recently as the chief operating officer of Icahn Sourcing LLC, a group purchasing organization focused on leveraging the aggregated spend of its collective members. From 1997 to 2002, Mr. Gary worked, most recently as a managing director, at Kaufhof Warenhaus AG, a former subsidiary of the Metro Group, which was acquired by Hudson's Bay Company.
Mr. Gary has been a director of: American Electric Power, a regulated electric utility, since February 2024; IE HCR LLC, a developer of residential homes and operator of resorts, September 2023; Vivus Inc., a pharmaceutical company, since December 2020; Conduent Inc., a business process outsourcing company, since August 2020; Icahn Automotive Group LLC, an automotive investment and operating company, since March 2017; and WestPoint Home LLC, a home textiles manufacturer, since June 2007.
Mr. Gary was previously a director of: New Seabury Homes LLC and GH Vero Beach Development LLC, a developer of single-family homes, from February 2021 until January 2024; NS Beach Club LLC, a country club operator, from February 2021 until January 2024; Eagle Entertainment Cayman Holdings, a hotel holding company, from October 2018 until January 2024; Herc Holdings Inc., an equipment rental company, from May 2022 until March 2023; IEH Auto Parts Holding LLC, an automotive auto parts retailer and distributor, from January 2021 until September 2023; PSC Metals Inc., a metal recycling company, from May 2012 until December 2021; ACF Industries LLC, a railcar manufacturing company, from July 2015 until September 2021; the general partner of CVR Partners, LP, a nitrogen fertilizer company, from September 2018 until March 2021; Herbalife Nutrition Ltd., a nutrition company, from April 2014 until January 2021; IEH AIM LLC, an auto parts buying group, from March 2017 until September 2019; IEH BA LLC, a seller of imported auto parts, from March 2017 until June 2019; Ferrous Resources Limited, an iron ore mining company, from June 2015 until August 2019; the general partner of CVR Refining, L.P., an independent downstream energy limited partnership, from September 2018 until February 2019; Tropicana Entertainment Cayman Holdings Co. Ltd., a casino and resort holding company, from January 2011 until October 2018; Tropicana Entertainment Inc., a company that is primarily engaged in the business of owning and operating casinos and resorts, from March 2010 to October 2018; Cadus and Cadus Technologies Inc., from February 2014 to June 2018; Icahn Nevada Management Corp., the owner and management company of an unfinished casino and resort, from June 2014 to November 2018; Tropicana Atlantic City Corp., a casino and hotel in New Jersey, from May 2014 until September 2018; and XO Holdings, a provider of telecom services, from September 2011 to January 2018.
Mr. Gary received his Bachelor of Science with senior honors from Georgetown University, as well as a certificate of executive development from Columbia Graduate School of Business.
Mr. Mongillo has served as our Director since May 2012. Mr. Mongillo is currently the chairman and chief executive officer of AMPF, Inc., a distributor of picture frame mouldings and supplies of which he is the principal shareholder. Since November 2022, Mr. Mongillo has been an equity member of Manufactured Housing Partners LLC, a private real estate management company and has served as the Managing Partner of Elkmont Capital since 2011. Mr. Mongillo is a private investor and since March 2020 has served as a director of Icahn Enterprises L.P., and currently serves as chairman of the audit committee. From January 2008 to January 2011, Mr. Mongillo served as a managing director of Icahn Capital LP, the entity through which Mr. Carl C. Icahn managed third-party investment funds. Prior to joining Icahn Capital LP, Mr. Mongillo worked at Bear Stearns for ten years, most recently as a senior managing director overseeing the leveraged finance group's efforts in the healthcare, real estate, gaming, lodging, leisure, restaurant and education sectors. Mr. Mongillo has previously served as a director of Herc Holdings Inc., from 2016 to 2018 and Federal-Mogul Holdings Corporation from 2017 to 2018. Mr. Mongillo received a Bachelor of Arts from Trinity College and a Master of Business Administration from the Amos Tuck School of Business Administration at Dartmouth College.
Mr. Strock has served as our Director since May 2012. Mr. Strock is the chief executive officer of Serve to Lead Group, Inc., which he founded in 1997. Serve to Lead Group, Inc. serves diverse sectors including: finance, manufacturing, transportation, technology, defense, aerospace, health care, real estate, chemicals, professional services, insurance, environmental safety and health, remediation, clean tech, sustainability, energy, and medical cannabis. Mr. Strock, individually and as part of various teams and organizations, serves various functions, including: management, project management, financing, sales and marketing, stakeholder engagement, public advocacy, communication (including new media), crisis communication, strategic planning, regulatory compliance, negotiation, mediation, facilitation, human resources, and training. Mr. Strock has served in senior executive and board positions in the public, private, and not-for-profit sectors. He served as California's founding Secretary for Environmental Protection, and as Assistant Administrator for Enforcement (chief law enforcement officer) of the U.S. Environmental Protection Agency. He has worked extensively on climate-related matters and risks in the public, private, and not-for-profit sectors. Mr. Strock is the author of three books on leadership, management, and communication, and a fourth on political reform. Mr. Strock holds an Artium Baccalaureus from Harvard College and a Juris Doctorate from Harvard Law School. He served to captain in the United States Army Reserve-Judge Advocate General's Corps (USAR-JAGC).