[2] Also on this day, Saints were drawn with Dunfermline Athletic, Albion Rovers, Edinburgh City and East Kilbride in Group H of the Betfred Cup.

[5] On 3 June, Saints announced that loanees Anders Dreyer, Brad Lyons, Danny Rogers, Duckens Nazon, Jordan Holmes, Kyle McAllister, Laurențiu Corbu, Lee Hodson and Mihai Popescu had all returned to their parent clubs, and striker Simeon Jackson left the club when his contract expired.

[7] Also on this day, defender Gary MacKenzie signed a one-year contract extension with Saints,[8] and goalkeeper Dean Lyness rejoined the club on a two-year deal after leaving in September 2018 to join Raith Rovers.

[9] On 28 June, former Saints captain Jim Goodwin was appointed the club's new manager after leaving Alloa Athletic, signing a three-year deal.

[13] On 19 July, defender Josh Heaton left the club by mutual consent, after only making two appearances since signing a three-year deal at the beginning of last season.

[18] On 9 August, former Saint Kyle McAllister re-signed for the club on a three-year deal, and defender Calum Waters signed on a one-year loan from Kilmarnock.

[19] On 22 August, Jamaican striker Junior Morias signed from Northampton Town on a two-year contract for an undisclosed fee.

[24] On 31 December, on-loan defender Sean McLoughlin returned to parent club Hull City at the end of his loan period.

[32] Also on this day, veteran defender Kirk Broadfoot left the club to rejoin Kilmarnock after leaving them just four months earlier to sign for Saints.

[30] On 7 February, it was announced that Ryan Flynn suffered cruciate ligament damage in a match against Hamilton, which effectively ended his season.