Which action by Jack Salyers least likely violates the Standard concerning loyalty?

Registering his new firm with regulators demonstrates Jack Salyers' commitment to upholding professional standards and complies with legal requirements. This action is a proactive step to ensure that his new business is legitimate and operates within the appropriate regulatory framework. Since it reflects transparency and adherence to the law, it does not present a conflict of interest with his prior commitments, thus aligning well with ethical standards concerning loyalty.

On the other hand, actions such as copying computer models for use in a new firm can undermine the trust and confidentiality between him and his previous employer, potentially breaching contractual obligations. Informing clients about a new firm and offering to transfer might raise ethical concerns around client poaching and conflicts of loyalty. Lastly, discussing resignation with coworkers could imply the potential for a divided loyalty or create an environment of uncertainty within the existing firm. Therefore, the act of registering his new firm stands apart as the least likely to violate any standards around loyalty.