It successfully raised $6 million at an issue price of 20c per share, allotted with a one-for-five free attaching option exercisable at the issue price on or before the end of 2015.
At listing, Cott will have 66.6 million shares outstanding and a market cap of $13.3 million.
It said it was planning to use the cash from the IPO to fund exploration offshore WA and onshore PNG.
Cott holds a 33.3% stake in WA-460-P, which is operated by Strike Energy.
The permit is adjacent to Shell's WA-384-P, where the supermajor is drilling the Palta-1 exploration well on the Palta prospect, 18% of which is located in WA-460-P.
The company also has a 12.3% interest in WA-261-P and an 11.5% stake in EP 325.
Over in PNG, Cott holds both PPL 435 and 436 on a 50-50 basis with Kina Petroleum.
PPL 435 covers 5346sq.km and is in the final stage of licencing. It is about 45km southwest and updip of PRL 21, which hosts the Elevala and Ketu gas fields.
Meanwhile, an application covering the 13,122sq.km PPL 436 has been approved by the PNG government.
Cott said it expected to list in early January.