"Only a couple of investors have got excited at this stage - the stock won't be researched and won't be on the radar of many investors' portfolios," Williamson said.
In 2014, the company raised $17m selling shares at $1.10 apiece and existing investors sold a further $5m into the offer, however, the stock has been punished as a slowing Australian economy and late product launches weighed on Serko's revenue.
Serko raised $8.1m from institutional and existing investors at 84 cents apiece in late 2015 to help fund a marketing push and product launch, having previously signalled it didn't plan to go back to the market after its June 2014 initial public offering.
The software developer trimmed its cash burn, with an operating cash outflow of $1.6m in the year compared to $4.5m a year earlier, and after investing and finance activity, left it with cash on hand of $4.5m, ahead of the forecast $3m-to-$4m.
Botherway said the cash balance will likely drop below $4m in the first half of the current financial year due to staff performance incentive payments and annual prepayments, "however we have sufficient cash to fund both our current level of activity and anticipated growth", and the financial statements note the level of cash reserves give "sufficient level of headroom to help support the business for at least the next 12 months".
Chief executive Darrin Grafton, who owns about 19.5 per cent of the company, said management achieved "good progress" in growing Serko's customer base, boosting the average revenue per booking, and rolling out new technology.
"With our Australasian corporate travel business now firmly established, we are looking to drive uptake on the small business platform, serko.travel, and expand into new markets through strategic partnerships," he said.
Serko scaled back spending on research and development in the 2017 year to $5.8m from $6.3m in 2016, and received government grant income of $1.1m in the 12 months ended March 31, down from $1.3m a year earlier. Its R&D grant from Callaghan Innovation was extended by $2m over the next two years, adding to the $4.2m, three-year R&D subsidy it was awarded in 2014.