Co-Founder Equity Split - 409A valuation for option grants

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Illustrative scenario prepared by my practice.
For informational purposes only. This is not legal advice. Laws vary by jurisdiction. Consult a qualified attorney for advice specific to your situation.
Hypothetical question

Using a throwaway bc my boss knows my main. I'm dealing with a situation and need some guidance.

409A valuation for option grants. I've been dealing with this for about 7 weeks now and the situation isn't improving.

I have already tried to resolve this directly but the other party is not cooperating.

Has anyone been through something similar? What worked for you?