Eyeo (ABP) can sell your data without telling you. – Adblock Plus for Safari (ABP) Review

Directly from their privacy policy: We may only transfer your personal data to third parties without informing you separately beforehand in the following exceptional cases as explained below: [...] [eyeo GmbH’s] structure may be adapted, subsidiaries, business units or components may be created, bought or sold. In such transactions user information may be shared with the transmitted part of the company.
Review by Selvius on Adblock Plus for Safari (ABP).