Wrong. Filing 8Ks for material events is a requirement by the SEC and by the exchange (NYSE). Failing to provide timely SEC filings is a more serious issue than ... having a stock price trading under $1.
8Ks do not relate directly to bankruptcy filings; or to maintaining business operations. For example if RadioShack closed a distribution center that would require filing an 8K; because it makes investors aware of a material change impacting company operations.