It can be hard to keep track of all the activity during what is a manic month, so that’s where we come in!
Keep up to date with all the business being done by each of the 12 Premiership clubs throughout January below.
1. Chris Gallagher (Larne)
Undoubtedly one of the biggest signings of this January window, Larne confirmed the arrival of midfielder Chris Gallagher from Cliftonville. He made his debut in their 2-0 Premiership victory over Dungannon Swifts Photo: Larne FC
2. Oisin Devlin (Larne)
Oisin Devlin joined Larne on a long-term deal from Institute, where he will return on loan for the rest of the season Photo: Larne FC
3. Jamie McDonagh (Newry City)
Jamie McDonagh joined Newry City on loan from Cliftonville after spending the first-half of this season at Glenavon Photo: Brendan Monaghan Photography
4. Kevin Joshua (Crusaders)
Former West Brom and York City defender Kevin Joshua was signed by Crusaders and made his club debut in their 1-0 Premiership defeat to Linfield Photo: Crusaders FC