Jonathan Greenberg is a widely published financial journalist, author, and solution-driven entrepreneur specializing in transformative narratives and disruptive technologies. 

Greenberg’s latest project is InformYourVote.com, a non-partisan platform that enables voters to easily compare videos of candidate positions on important issues and, in doing so, replace donor-paid advertising as the means by which voters get their election information.   

For the 2026 congressional midterms, the ad-free website is covering the 21 closest House and the 12 closest Senate races, presenting Republican and Democratic candidates expressing how they would make housing, health care and the cost of living more affordable.  

Greenberg has written about Donald Trump longer than any journalist working today, and is one of two reporters named in Trump’s Wikipedia biography. In 1982, he was notoriously conned by Trump to get onto the first Forbes 400 wealth list. He wrote about this, and the infamous “John Barron” scam here. This was the first in a series of the most widely read exposes about Trump’s business history to appear in the Washington Post while renowned editor Martin Baron was at the helm, including, How Trump silenced the people who could expose his business failures and the 6 essential cons that define Trump’s success.

Greenberg has appeared more than a dozen times on national media talking about Trump’s business activities, including on the A&E Biography: The Trump Dynasty, multiple appearances on CNN (with Chris Cuomo, Erin Burnett and Don Lemon), MSNBC On the Beat , and NPR’s On the Media.

His experience with “John Barron” has been the subject of comical monologues on Colbert’s Late Show, the Daily Show with Trevor Noah,  and Seth Meyers A Closer Look. 

Jonathan’s recent start-up venture is EV Everywhere, a breakthrough technology licensing company that is developing “Eve,” which will be the world’s first all-in-one 5 MWh mobile battery charging station with onboard chargers. EVEs will provide an off grid power system solution for charging battery arrays and electric vehicles without building charging infrastructure or needing to access an overburdened transmission grid.

Greenberg began his career as a fact checker at Forbes magazine, in 1980.  The following year, he became the first reporter to work with Malcolm Forbes to create the Forbes 400 Rich List, as recounted in his Town & Country article,  Forbes’ 100th anniversary issue,  and the definitive biography of Malcolm Forbes. Greenberg also wrote Forbes’ first two major profiles of Black entrepreneurs, and its first articles about the battery and the electronic games industries. His investigative feature articles have  appeared in the Washington Post, the New York Times, New York Magazine, Forbes, The New Republic,  the Huffington Post (where he was a blogger for four years), and Manhattan, Inc. (contributing editor).

On July 20, 2024, the day before President Joe Biden announced he would not be seeking re-election, the Washington Post published Greenberg’s unique analysis of polling data, which may have helped convince him to step down from the race. 

A Web 1.0 pioneer, Jonathan started the digital media company Gist.com in 1996 to provide the world’s first customizable TV listings and content guides. Gist competed successfully with Rupert Murdoch’s TV Guide, and was one of 14 companies to win the first ever Webby Award in 1997.

As Gist’s CEO, Greenberg managed a staff of 80 for six years, providing custom TV listings and content applications in three countries for a dozen of the world’s largest media companies, including Yahoo, Microsoft, AOL, CNN, ABC, CBS, NBC, Hachette LaGadere and Axel Springer.

Following the September 11, 2021 attack on the World Trade Center, Greenberg was appointed Policy Director for the New York City Council’s Select Committee on Lower Manhattan Redevelopment. As the City Council’s lead analyst and policy maker for federal relief programs, he managed public hearings for downtown businesses, non-profits and residents. His work resulted in $300 million of federal funds being re-directed to needy businesses and residents closest to the World Trace Center. He was instrumental in winning a reversal of a federal plan, in 2002, to move the U.S. Customs House from its historic home of more than 200 years in Lower Manhattan to NewarkNew Jersey.

Greenberg started Progressive Source Communications in 2007 to help non-profits and advocacy groups directly build public awareness through people-powered digital media campaigns.  The company recently created a 10-part educational web video series for the California Air Resources Board, and campaigns for organizations like Stonyfield Farm, the ACLU and the Virgin Foundation. Progressive Source owns the SonomaIndependent.org, an award-winning public interest solution focused website.

Progressive Source also owns the SonomaIndependent.org, an award-winning public interest solutions and advocacy website. The Sonoma Independent has launched numerous successful grassroots efforts, including the campaigns to Stop All Government Evictions from Safe Affordable Alternative Housing (SAGE), Bury Fire-Causing Power Lines Now! throughout California, and Restore Library Hours in Sonoma County.

Greenberg’s 45 years of professional media and reporting experience has been enhanced by a Yale Law School Masters Degree fellowship program, from which he graduated with honors in First Amendment Law from internationally renowned attorney Floyd Abrams and then Yale University President Benno Schmidt. He has been an adjunct professor at UC Davis School of Law (2022) and a guest lecturer on challenges to the First Amendment at Columbia/Barnard, Temple University and Seton Hall Law school.

Greenberg is the author of the critically acclaimed biography Staking A Claim: Jake Simmons and the Making of an African-American Oil Dynasty, which a Washington Post Book World front page review called, “a rare biography that challenges the readers senses in the same the way science fiction does.”  In 1992, he edited Buying America Back: Economic Choices for the 1990′s, an anthology of 45 progressive solution-oriented essays called by Publisher’s Weekly,  “An immensely important resource for policymakers, community activists, and everyone concerned with building a more humane future.”

From 2005 through 2006, Greenberg was vice president of Fenton Communications, where he created and managed media outreach, messaging and advertising campaigns for clients, including the two “Save Darfur” rallies in Washington and New York, and Helen Hunt’s “Faith & Feminism” Internet video and ad campaign.

Greenberg is a graduate of New York City’s Stuyvesant High School, where he was a four term student of author Frank McCourt, an experience which both writers recalled in the New York Times Education life years later. He received his B.A. in rhetoric and literature from the State University of New York at Binghamton and a Masters Studies in Law degree from Yale Law School. He is a founding member, and current co-chair of the board, of the 20-year old Bella Abzug Leadership Institute, which trains young New Yorkers to be effective leaders.