My employer is in the process of filing employer-sponsored EB2 NIW (instead of self-sponsored). I understand that self-sponsored EB2 NIW is independent of an employer and remains valid in any case. But can I-140 obtained from employer-sponsored EB2 NIW be transferred to another employer?
The ability to keep your NIW when changing employers depends on whether you continue to pursue the same endeavor that was the basis for your NIW approval. If you maintain the same type of work in the same field, even with a different employer, you likely can keep your NIW. However, if you change to a completely different field or type of work, you may need to start a new green card process. For certainty, it's advisable to consider filing a new green card application or NIW when changing employers.