One day after a 2015 news report raised questions about the safety of its products, flooring retailer Lumber Liquidators released a public statement strongly denying the allegations. It also filed the statement as an official document with the Securities and Exchange Commission (SEC), which is standard practice for a publicly traded company.

Yet investigators later learned that the Virginia-based company made materially false or misleading statements in its SEC filing, known as an 8K. The SEC requires companies to file 8K forms to publicly disclose information relevant to that company’s stock price.

The March 2015 news media report alleged that Lumber Liquidators’ laminate flooring contained dangerously high levels of formaldehyde, a gas that in high amounts has been linked to health issues like sore throat, nausea, headaches, and even cancer. In the 8K, the company claimed it complied with applicable regulations and disputed the test results that had been featured in the news report.