Stone was indicted (pdf) in January on charges of making false statements to the House Intelligence Committee during its investigation of Russian interference in the 2016 election and attempts to persuade a witness to give false testimony and withhold pertinent information from investigators.
Stone, a longtime Republican political operative who has called himself a "dirty trickster" and "agent provocateur" was charged with obstructing justice, witness tampering and lying to the US House of Representatives Intelligence Committee during its investigation into Russian election interference.
The actual "intermediary", prosecutors asserted, was conservative author Jerome Corsi, who was also questioned in the course of special counsel Robert Mueller's investigation but did not testify in Stone's trial. Judge Amy Berman Jackson will preside over Stone's sentencing hearing February 6.
Stone briefed the Trump campaign about everything he learned about WikiLeaks' plans "every chance he got", prosecutor Jonathan Kravis said.
In a trial that lasted about a week, witnesses highlighted how Trump campaign associates were eager to gather information about emails the USA says were hacked by Russian Federation and then provided to the anti-secrecy website WikiLeaks.
Roger Stone and wife Nydia leave federal court in Washington on Friday. On Oct. 3, 2016, Stone emailed Erik Prince, a prominent Trump supporter who had ties to the campaign: "Spoke to my friend in London last night".
During the trial, deputy chairman of the Trump campaign, Rick Gates, testified regarding a July 2016 phone call between Stone and Trump on the heels of WikiLeaks' release of emails from Clinton campaign officials.
Stone has been out on bail during his trial, but he's been under a gag order that prohibits him from talking about the case or using social media-something he's had trouble abiding by. Credico claimed that Stone wrongly painted him as an intermediary.
Stone lied to Congress to protect the president, prosecutors said.
But Credico testified during the trial that he actually knew nothing about WikiLeaks was about to release - and prosecutors never presented any evidence he or Stone ever did.
Lawyers for Mr. Stone said it was the committee who mislead him, not the other way around.
Messages between the two included references to Frank Pentangeli, the "Godfather" character who experiences a memory lapse when he appears before the US Senate to finger the mob.
He's also accused of trying to intimidate Credico and threatening to take his dog.