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The thing you need to concentrate on is how to make the company successful. Is it possible to convert your third of the company into massive amounts of cash? Doesn't sound like it, because the company is not a unicorn. You should be concentrating on getting the company (and therefore, your third of the company) to be worth as much as possible, and not worry about silly ego stuff.
Also, if this is really important to you - at my company, both the CTO and the VP of Engineering report to the CEO. It is not a given that VP report to CTO.
I would definitely talk to them before taking major decision
Even though if we cast out the mistakes or whatever it was that you had posted out of the picture for a moment, it might just have been a good point of learning and reading for anyone.
Please do not do this going forward.