Loughman was born in Reno, Nevada and lived there until he was four-years-old, when his family moved to Sevenoaks, Kent due to his fathers work in the oil and gas industry.
[12] In his first Champions Cup start for Munster, in their opening 2019–20 tournament pool 4 fixture against Welsh side Ospreys on 16 November 2019, Loughman won the Man-of-the-Match award and scored a try in the provinces 32–13 away win.
[19] Loughman made his first appearance for Ireland when he started in their uncapped match against the Māori All Blacks on 29 June, however, he was removed from the field in the first minute for a head injury assessment.
Loughman appeared to display symptoms of concussion, but passed the assessment by an independent doctor and returned to the field, only to be removed permanently at half-time as a precaution.
[25] Despite initially missing out on selection, Loughman was called-up to Ireland's training squad for the 2023 Rugby World Cup warm-up matches after provincial teammate Dave Kilcoyne sustained an injury,[26] and featured as a replacement in the 29–10 win against England on 19 August[27] and the 17–13 win against Samoa on 26 August[28] before being selected in Ireland's 33-man squad for the 2023 Rugby World Cup.