H4-EAD Successor in Interest?

My husband has approved i140. But last year, my husbands company got took over. He has filed for Successor in Interest, but has not got any update.
I am on a H4 visa and I would like to know if the I-140 my husband have (from the previous employer (which is acquired by new company)) can be used for my EAD application while the Successor in Interest application is in process?
or should I wait till the new Successor in Interest is approved?