Mike Treacy has announced he is stepping down as chairman of Dundalk.
Treacy is exiting his role with PEAK6 – the investment group which owns the club – for family reasons.
Bill Hulsizer, father of PEAK6 owner Matt Hulsizer, has been appointed as the new chairman.
Treacy said: "My family and I have decided it's time for me to step aside from PEAK6 and focus on my wife Laura’s medical career during this pivotal stage.
"Moving on to the next chapter will unfortunately require I step down as chairman of Dundalk.
"I am honoured to have served as chairman these last two seasons and forever grateful to the Dundalk community.
"While this was a difficult decision, I am excited for Bill to assume a larger role with Dundalk FC and lead the club’s continued progression both on and off the pitch. His passion and commitment are unparalleled as Dundalk FC begins a new decade of football."
Bill Hulsizer paid tribute to the outgoing chairman: "On behalf of the Board and everybody at Dundalk Football Club, we wish to thank Mike for his outstanding contribution to the club and Irish football over the past two years.
"We wish Laura and Mike all the very best in their future and he will always be a respected contributed to our past and future successes at our club."