AC21 and EB2-NIW using EAD

GCforTRAVEL

Registered Users (C)
Hi,
I have I-140/EB2-NIW approved and I-485 pending at TSC (ND Oct. 2005).

Recently, ~4 months back, I started working with a new employer (same field as NIW) using EAD after having worked on H1-B for 2 years.

Do I need to file this AC21 or inform USCIS about employer change?

Thanks for your response!
 
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