Last weekend it was reported that the Wales rower was at the center of a three nation showdown for his services. Four clubs from the English Premiership were linked to him, as well as outfits from the French Top 14 Lyon, Montpellier and Toulon.
And in Wales, his region, the Dragons faced competition for his Ospreys services, Cardiff Blues also being mentioned as potential contenders.
But Moriarty chose to stay put, offering Welsh rugby and the Rodney Parade area a major boost.
The Dragons had seen Cory Hill join the Blues this week, and losing another international could have been considered reckless. But it didn’t work that way.
Wayne Pivac will be delighted because the result means that Moriarty will continue to be eligible for Wales, rather than being placed under limits according to the rule affecting exiled Welsh players who have less than 60 selections.
The 25-year-old or # 8 blind player had successfully appealed his initial assessment to a Welsh rugby panel, boosting the hopes of those who wanted him to stay on the regional stage.
Under this system, once a rating has been agreed, no one Welsh region can outbid another for a player.
Moriarty therefore decided to stay in Newport.
The Welsh Rugby Union is thought to pay 80% of its salary, with the 2017 Lion being one of the top 38 players in Wales.
Factor Dean Ryan is one of the main reasons he stays.
Moriarty has been immensely impressed with the director of Dragon Rugby and believes that he and the team can improve under the Englishman.
He also felt a debt of gratitude to area president David Buttress for bringing him to Rodney Parade in the first place.
The fact that he had friends with the Dragons, including Sam Davies, with whom he grew up, and that he appreciates the training methods of the region also played a key role in his decision to stay.
Vibrations earlier in the week had suggested that the Ospreys had given up on trying to lure Moriarty. However, it had been clear for two weeks that his goal was to stay with the Dragons if he could get an agreement on his assessment.
Once that happened, a move away from Newport always seemed unlikely.