I'm assuming that, behind your question, you're thinking there's a chance that Google may consider this a change of ownership and reset your prior link credits to zero.
I don't know whether this would be considered a change of ownership or not, and I am not a lawyer. ICANN won't allow a change of registrars for 60 days after a change of company name or organization, so in the world of domains this is not completely an insignificant change.
Clearly, though, if all else on the site stays the same, Google is not going to consider this as the kind of change of ownership where a domain is transferred for its backlink credits.
If you have no plans to make big changes on the site, I would assume you'd be OK. If you're about to make big site changes, this might be the wrong time to change the registrant info.