Co-Founder Equity Split — co-founder leaving before cliff

Has anyone dealt with something like this? I'm not sure what my options are.

co-founder leaving before cliff. I've been dealing with this for about 4 months now and the situation isn't improving.

I have already tried to resolve this directly but did not get a clear answer.

What are my legal options here? Is it worth pursuing?

Not a lawyer, but I have direct experience with this.

What worked for me was filing with the appropriate government agency. It took 4-8 months but was worth it.

Just want to point out — the statute of limitations might be a factor here. In some states it's as short as 1-2 years. Don't sit on this too long.