Leah Weckert, who was appointed as managing director and chief executive of the supermarket chain last May, will brief analysts and journalists on the numbers on Tuesday morning.
For the first quarter - the 13 weeks from June 26 to September 24 - Coles reported in October that its revenue grew 3.6 per cent to $10.2 billion, compared with the same period a year ago. Same-store supermarket sales were up 4.6 per cent to $9.5 billion, while like-for-like liquor sales were flat at $853 million.
There was evidence of cost-of-living pressures impacting customer behaviour, such as shoppers seeking out loyalty points and bonus offers and trading down, such as shifting back to mainstream beer brands from craft. Food prices also moderated during the first quarter, with prices dropping year-on-year for fresh produce and red meat.
Supermarkets have been in the spotlight ever since the federal government last month directed the Australian Competition and Consumer Commission to conduct an inquiry into the sector, including its pricing practices.
The inquiry will run for a year, with an interim report delivered to the government by August 31.
The ACCC last conducted an inquiry into the sector in 2008, which resulted in both Coles and Woolworths agreeing to remove restrictive tenancy provisions that may have prevented shopping centres from leasing space to competing supermarkets.
After the latest inquiry was announced, Ms Weckert and Woolworths chief executive Brad Banducci agreed to sit down with ABC's Four Corners program, which was investigating what it described as allegations of price-gouging.
But their appearance was widely panned, especially Mr Banducci's, who at one point started to walk out on the interview.
