Announcing its full-year result in September, Kathmandu said online revenue had risen 55 per cent to reach more than 4 per cent of total sales.
The retailer also launched a new mobile website late last year, which it said would be more convenient for customers browsing its online store on mobile devices such as smartphones and tablet computers.
Kathmandu products have also become available in the United Kingdom through the website of online retail giant Amazon.
"I think the fundamental strategy of having your own website but also going through a range of marketplace websites [like Amazon] is a good one and from what I see so far the company has executed well on what are really quite big IT investment programmes required to get on to all of these platforms and give consumers a really good experience," Sydney-based Kirk said.
He said online also provided Kathmandu with opportunities to expand, through international shipping, into new markets such as Japan and the United States where it does not currently operate bricks-and-mortar stores.
"The board believes ... that Kathmandu can be a successful global brand," Kirk said. "In order to take Kathmandu to the world we clearly need to continue to invest in the brand and we need to look carefully at what combination of physical presence in stores and online presence optimises the growth in return for shareholders in that process of growing the brand globally."
He said it was also likely that Kathmandu would open bricks-and-mortar stores in markets outside of the countries it currently operates physical sites in - New Zealand, Australia and the UK.