Spike Networks, Travelshop and ISIS Communications and seven other listed technology companies, in a study of 20, have been found to have failed to comply with the Australian Stock Exchange's rules of continuous disclosure.
This is according to a statement issued by the Australian Securities and Investments Commission (ASIC).
Companies that break these ASX rules are committing a breach of Federal Corporations Law, ASIC's national markets unit director, Claire Grose, said.
She said company directors who fail to publicly disclose information deemed by the ASX to be relevant to investors faced charges of negligence, even if they were unaware of their disclosure responsibilities.
The 10 companies were "compelled" to disclose more information to the Australian Stock Exchange (ASX) when faced with legal action, Grose said.
Travelshop CEO of three months, Glenn Robertson, said he was unaware that his company had ever committed any breach of the law.
Grose said ASIC met with Travelshop to discuss nondisclosure rules in June, the month Robertson took the chief executive seat.
Spike staff were unavailable for comment.