NEO,
You’re correct, it’s sank, the past tense. Sunk is an adjective or a past participle.
i thoroughly agree that it’s very sad to see a once-great company fall so far. It seems to happen to so many companies when bean counters with no experience of anything but balance sheets or making up all sorts of acronyms like EBITDA are allowed unfettered control and all must bow down before their financial altar. Accountants should stick to auditing businesses, not running them. And don’t even get me started on the proliferation of human remains ‘professionals’ in companies.