$INV CEO Grieco under fire from shareholder who assigns him an "F" grade. Stock down 90% following what the investor calls "the worst earnings call in Wall Street history," then another 50% drop after a controversial shelf filing.

Key criticisms: lack of decisiveness, wasting 10 weeks while taking direction from former board consultants accused of self-dealing. Accelsius subsidiary reportedly missed capital raise window—could have secured $1B valuation weeks ago, now unlikely.

Investor claims Grieco prioritized appeasing "corrupt" advisors over shareholder interests, costing the company momentum and credibility.