Stewart H. Krentzman (born March 30, 1951) is the founder of Hummingbird Enterprises, Inc., a private holding company involved in several entrepreneurial startups.

From 2003 until 2010, Krentzman was the president and chief executive officer of 1200 employee Oki Data Americas, Inc., headquartered in Mount Laurel, New Jersey. He served as a board director of Okidata Corporation in Tokyo, Japan. He was responsible for all company operations throughout North, Central, and South America. Its parent company, $6.2B Oki Electric Ltd., is based in Tokyo, Japan.

Stewart Krentzman

Computer Reseller News selected Krentzman as one of the Top 100 Most Influential Executives in Technology. He is credited with creating a team that revitalized the Oki Americas product line, expanding to new printing areas in healthcare and high-end graphics, and revamping the original equipment manufacturer sales strategy to include the company's light-emitting diode (LED) printing technology.

Stewart Krentzman

Krentzman helped found New Taste Dimensions Foods, Inc.; a company focused on using steam and heat to bond gluten. The company has worked for the McDonald's Corporation in the United States and Asia.

Stewart Krentzman

Krentzman and several doctors trained at Memorial Sloan Kettering Cancer Center consulted for Sheik Mohammed bin Khalifa bin Zayed Al Nahyan of the United Arab Eremites on a concierge medicine model in 2013.

He created the Business Plan with New York-Presbyterian Hospital, Weill Cornell Medical College, to expand the Jay Monahan Center for Gastrointestinal Health into additional areas of the United States.

Along with his son Jeffrey, they founded Ovenu North America, LLC., which does business as TheBBQCleaner.com, a home-based business opportunity company that began in April 2009 and has expanded to 282 locations across the United States.

In 2018 Hummingbird Enterprises launched biodegradable Scentanicals, a scented, 100% natural botanicals alternative for adding aroma in small spaces. The business was featured in the June 2019 edition of Real Simple Magazine.

In May 2014, he was nominated as one of three consumer representatives to the State of New Jersey Medical Practitioner Review Panel. The panel reviews medical malpractice and healthcare facility or health maintenance organization privilege cases.

Krentzman, an adjunct professor, teaches Brand Strategy and Planning and Marketing Planning and Strategy and, along with the Director of Strategic Partnerships at Meta, co-teaches Social Media and Mobile Technology at the New York University Stern School of Business to second-year MBA candidates in the executive (NYC and Washington, D.C.), full-time, and part-time MBA programs. He has been teaching at NYU since 2004.

Education

Krentzman graduated from Colonia High School (1969) in the Colonia section of Woodbridge Township, New Jersey, and from Fairleigh Dickinson University, Teaneck, New Jersey, with a BA in psychology in 1973. In June 2007, the university awarded The Pinnacle Award to Krentzman, the highest award it gives to university alumni. He holds an MA in human resources from The New School in New York City, which he received in 1977.

Career at Oki Data Americas

Before becoming president and CEO, he held the executive vice president and chief operating officer position. He oversaw sales, marketing, consumables, engineering, Latin America, and new business development. During his tenure at Oki Data Americas, Krentzman also served as vice president and general manager of the inkjet printer line, senior vice president of marketing, and senior vice president of sales and marketing. Computer Reseller News named Krentzman to their Top 100 Most Influential Executives in Technology in 2009 and Top 25 Executives for Peripherals in 2004. "Everything Channel's CRN Announces the Top 100 Most Influential Executives in the Industry" He was a member of the Computer and Communications Industry Association in Washington, D.C.

In October 2007, PC Magazine ranked Oki Data with the highest overall score across all printing categories in Reader's Satisfaction Survey, noting that "The Land of Color Laser Printers... Has a New Ruler: Oki Data". An article published in August 2009 by Computer Reseller News Magazine states that Krentzman was in talks to leave the company in September 2008, 18 months before his actual departure on March 31, 2010. Insiders say a disagreement regarding the company's retail business strategy led to his departure. Krentzman agreed to remain to assist his replacement, Takabumi Asahi, in the transition to replace Krentzman as president and CEO. On June 1, 2022, 12 years after his departure the company ceased sales of Oki branded products in the Americas.