Change my Name from Individual to Company

I think you have to apply to do so if you didn't do it from the original registration of your account. I would contact Apple through your developer account. I recently has to go the other way with mine and it required a phone call.

Apple has said this about that:

To have your company name appear as the seller, your company must be recognized as a legal entity and you must be enrolled as an organization. If you are a sole proprietor/single person business, you must join as an individual and your legal name will appear as the seller. If you have enrolled as an individual and need to convert your individual account to an organization account, please contact us.

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