It appears as though he's holding up better than Poet's market cap. 

Let's take a look at some of the roles and responsibilities of a model CFO according to ... Tom's alma mater. Let's see how Mr Mika stacks up against this brief overview. We already know his actions have been a failure, so F for the practical aspect. 

WHAT ARE TODAY'S CFOS EXPECTED TO DO?

They have a broad set of responsibilities. CFOs are expected to engage in value-based management, making decisions based on what will enhance the value of the organization. They need to set strategic direction and goals, often as a partner to the CEO. They need to play a role in driving performance, figuring out what metrics shed light on performance and what actions would drive performance improvements. They manage risk and regulation and lead capital budgeting processes that impact choices about investment, divestiture, and optimization across business lines.

The CFO also has to be a great communicator. This isn't a role where you can sit quietly in an office in front of a calculator; you have to get out and interact with internal and external constituents, including investors and board members. And on top of this, you have to do all the traditional things that CFOs are expected to do, such as budgeting, closing the quarter, anticipating funding needs, and ensuring that organizations are well resourced.

DO YOU THINK THIS REQUIRES A CERTAIN PERSONALITY TYPE?

You need to have quite a bit of humility and willingness to learn, along with an open mind and the ability to work with people who have deep knowledge in areas that you might not be as well versed in. Many people find that when they start off as a CFO, they have big blind spots. You need to know how to lead effectively while addressing those blind spots.

https://www.exed.hbs.edu/insights/succeeding-strategic-cfo-c-fritz-foley