Manager Pat Fenlon has been given a four-match ban, two of which are suspended, for his gesture during Hibernian's Scottish Cup final defeat.
Fenlon was sent to the stand by referee Craig Thomson moments after he had been mocked by Hearts fans late in his side's crushing 5-1 loss.
The Hibs manager later denied reacting to his tormentors.
But a hearing on Thursday decided on a touchline ban for the Irishman for breaching disciplinary rule 203.
Fenlon will therefore watch the first two games of the next term from the stand, with the suspended penalty lasting the duration of the season.
When asked if he had reacted to the mocking Hearts fans, Fenlon said after the game: "No I didn't. I made a gesture in relation to the way we were playing. We kept giving the ball away cheaply.
"I don't know what they were singing to be honest."
Fenlon also insisted that he did not know why he was punished by Thomson, who angered Hibs by awarding a penalty and sending off Pa Kujabi for the defender's foul on Hearts winger Suso when the score was 2-1.
"I don't know," he said. "I didn't ask him about that. I didn't get to speak to the referee. He was the last person I wanted to speak to.
"It was frustration with the way we are playing. The referee said it was the police, but I spoke to the police who said they had nothing to do with it, so it is disappointing."
Rule 203 states that no member of team staff shall commit misconduct at a match, breaching the post-match protocol and committing unacceptable conduct.
Those offences include "continued use of offensive, abusing and/or insulting language and/or behaviour, calling a match official a cheat and/or calling a match official's integrity into question; failure to comply with a match official's requests; adoption of aggressive behaviour towards a match official; any racist, sexist, sectarian and/or otherwise discriminatory element; and the degree of any physical violence".