Many of the suspensions I'm sure come from an SEC edict to contact the dark companies. If the SEC sends a certified letter to the last known address of a company and it gets returned that would be a reason to commence with suspension proceedings. If the certified letter is accepted and there's a reply from an officer then I wouldn't think there'd be anything to worry about unless the company was trading heavily, "in play" so to speak, via promotions, and has issued prs with unverifiable information.
I've long been an advocate that all publicly traded companies be required to file a simple annual report with the SEC. Current address and phone, and current officers, that's all. At least once a year we'd all learn if there were takeovers, buyouts, etc. or if it was business as usual. If a company isn't on time with it give them a short grace period. If after that there's no reply suspend them, assuming they have ceased operations.
The annual reports at Florida are a good example of what I suggest. It would take a few years but most or all companies that have ceased operations would disappear from trading.
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