I am in a similar acquisition/merger type situation. Same department, same desk, four different legal entities. I'm just including the three main ones in the same entry for my resume.
It was a pain in the butt when I bought a house, though, and I needed to write a formal letter explaining all the changes and why it looks like I kept switching jobs according to my tax documents.
Yep, I'm not looking forward to filing taxes this year - I have W-2's from three different employers, just for me (not to mention a few months on unemployment, too).
It was a pain in the butt when I bought a house, though, and I needed to write a formal letter explaining all the changes and why it looks like I kept switching jobs according to my tax documents.