Executive Team

Andrew Callahan

President and Chief Executive Officer

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Andrew Callahan

Mr. Callahan has served as a member of our Board of Directors since April 2018 and as our President and Chief Executive Officer since May 2018. He served as a member of the Tyson Foods Executive Leadership Team in multiple operations general management roles from August 2014 to September 2017, including President of North American Foodservice & International at Tyson Foods, Inc. from February 2017 until September 2017, and President of Retail Packaged Brands, including iconic brands such as Tyson®, Jimmy Dean®, Hillshire Farm®, Sara Lee®, Aidells® and Ball Park®, from August 2014 to February 2017. He served as an Executive Vice President and President of Retail at The Hillshire Brands Company (f/k/a Sara Lee Corporation), a producer of packaged meat and frozen bakery products, from June 2012 until its acquisition by Tyson in August 2014. Prior to joining The Hillshire Brands Company, Mr. Callahan served in positions of increasing responsibility in marketing, sales and general management for Sara Lee Corporation and Kraft Foods, Inc. Prior to joining Kraft Foods, Inc., Mr. Callahan spent seven years in the U.S. Navy as a Naval Flight Officer. Mr. Callahan serves on the board of directors for the Consumer Brands Association, and he previously served on the board of directors for the Grocery Manufacturers Association (GMA), the International Foodservice Manufacturers Association (IFMA), as well as the Make-A-Wish Foundation of Illinois.

Stuart Blankenhorn

Vice President Strategy

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Stuart Blankenhorn

Stuart Blankenhorn has served as our Vice President of Strategy since May 2019. Prior to Joining Hostess Stuart worked for Blue Apron in various strategic and operational roles. He has a background in investment banking and strategic consulting working with clients across the consumer packaged goods landscape.

Michael Cramer

Chief Administrative Officer

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Michael Cramer

Mike Cramer has served as our Chief Administrative Officer since April 2013. He has served as Vice President at CDM Hostess Class C, LLC, Vice President at Hostess CDM Co-Invest, LLC, and Vice President at Fairmont Aviation LLC since April 2013, as a director of Gores Metropoulos, Inc. from January 2019 to December 2020, and as a director of Gores Metropoulos II since January 2021. From June 2010 through November 2014, he served as Senior Vice President and Director of Pabst Brewing Company. From July 2010 through August 2017, he served as Founding Director of the Texas Program in Sports and Media at University of Texas - Austin and also was appointed as a Senior Lecturer. He continues to serve as a Senior Fellow in the Moody College of Communications at the University of Texas - Austin.

Mike Gernigin

Senior Vice President, Commercial Finance

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Mike Gernigin

Mike joined Hostess in 2016 as Vice President, Corporate Controller and recently served as our Chief Accounting officer until August 2022. Today, he serves as our Senior Vice President, Commercial Finance. Prior to joining Hostess, Mike served as Corporate Vice President, Controller at the former H.D. Smith Wholesale Drug Company, a pharmaceutical wholesaler, leading its finance, accounting, treasury and tax functions. Mike also served in various roles at KPMG LLP out of their St. Louis office.

Tina Lambert

Vice President of Marketing Center of Excellence

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Tina Lambert

Tina Lambert has served as Vice President of Marketing Center of Excellence since December 2020. As leader of the Marketing COE, Tina oversees Digital Advertising, Communications, Consumer Insights, Innovation, Shopper Marketing and Insights and eCommerce marketing. Prior to joining Hostess Brands, Tina ran various innovation teams at Tyson Foods, Inc. from 2014 – 2020.  Her roles at Tyson included running the agile Innovation Lab, Foodservice Innovation, Disruptive Innovation, and Innovation Strategy & Planning. As leader of Innovation Strategy & Planning, Tina ran the integration of innovation processes, systems and projects for Tyson Foods and Hillshire Brands after the acquisition. From 2010 to 2014 she acted as Marketing Director of Meals and Desserts Innovation for Kraft Foods working on brands including Jello®, Cool Whip® and Kraft Mac & Cheese®.  Tina led Marketing Innovation in various roles at The Kellogg Company including on the Mini Wheats®, Special K®, Froot Loops®, Pop-Tarts® and Krave® brands from 2004 to 2010.  She began her career at Procter & Gamble in 1999, holding brand management roles on brands including Sunny Delight® and Pringles®.

Travis Leonard

Chief Financial Officer

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Travis Leonard

Travis Leonard has served as our Chief Financial Officer since May, 2022. Prior to joining Hostess Brands, he served as senior vice president and CFO of the Medical segment at Cardinal Health. He joined Cardinal Health in 2018 as Corporate Treasurer. Prior to that position, he served in finance and corporate audit roles at Cargill. Earlier in his career, he spent nearly 14 years in various finance roles of increasing responsibility across multiple businesses at Kraft Foods.

Arist Mastorides

Chief Customer Officer

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Arist Mastorides

Arist Mastorides has served as our Chief Customer Officer since January, 2022. Prior to joining Hostess Brands, he was the President of the North America Family Care business of Kimberly-Clark Corp., a global personal care and tissue products company, from May 2019 through December 2021, where he was responsible for P&L management of the following brands: Cottonelle, Scott, Kleenex and Viva. Prior to that position, he held the following positions at Kimberly-Clark: Vice President/General Manager of the North America Infant Care business (October 2018 through April 2019), Vice President/General Manager of North America Child Care business (January 2017 through September 2018) and Vice President/General Manager of the Global Walmart team (March 2012 through December 2016). From September 2011 through February 2012, Arist was the Senior Vice President of Direct Accounts for Diamond Foods. Prior to this, he served in a variety of marketing and sales roles at Kimberly-Clark. Arist currently serves on the Board of Directors and as the Treasurer of the Xavier Catholic Schools System.

Dan O’Leary

Chief Growth Officer

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Dan O’Leary

Dan O’Leary has served as our Chief Growth Officer since May, 2021. From February 2019 through April 2021, he was at Tyson Foods, serving first as Senior Vice President of the Hillshire Farm business unit, and then as of September 2019, as the Group General Manager of the Prepared Retail business, where he was responsible for P&L management of the following brands, among others: Jimmy Dean, Hillshire Farm, and Ball Park. From October 2014 through February 2019, he was Senior Vice President at Mizkan America with responsibility for marketing, consumer insights, R&D and key supply chain functions. From August 2004 through October 2014, Dan was at Kraft Foods in a variety of general management, marketing and sales roles.

Adrian Poretti

Chief Supply Chain Officer

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Adrian Poretti

Adrian Poretti was appointed as Chief Supply Chain Officer in September 2022. Before joining Hostess Brands, he served in multiple leadership capacities over a nearly 30-year career with Kimberly-Clark, most recently as Vice President, Global Supply Chain Capabilities from May 2021 to September 2022. Prior to that, he served as Vice President, Supply Chain North America from November 2018 to May 2021 and as Vice President, Global Manufacturing from November 2015 to November 2018.

Darryl Riley

Chief Sustainability Officer

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Darryl Riley

Riley joined Hostess Brands in 2016 as Senior Vice President, Quality, Food Safety and R&D. Prior to joining Hostess Brands, he held positions of increasing responsibility at various food companies, including Kraft Heinz and Kellogg Company. Riley earned his bachelor's degree in chemical engineering from the New Jersey Institute of Technology.

Jolyn Sebree

General Counsel

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Jolyn Sebree

Jolyn Sebree has served as our General Counsel since April 2013. From March 2012 through April 2013, she served as Senior Vice President, Acting General Counsel and Corporate Secretary at Interstate Brands Corporation and related entities. Prior to this role, she served as Vice President and Assistant General Counsel at Interstate Brands Corporation and related entities from August 2011 to March 2012.

Rob Weber

Chief People Officer

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Rob Weber

Rob Weber has served as our Chief People Officer since September 2019. From October 2018 through August 2019, served as Chief Human Resources Officer at Sears Holding Company, and from 2015 through September 2018, he served as its Vice President of Human Resources. Prior to his roles with Sears Holding Company, Mr. Weber worked for Groupon, Inc. as Senior Human Resources Director for North America from July 2013 through September 2014 and as Head of Global Talent Development from October 2014 through September 2015.