In a 40+ year career, I’ve been on the acquired side 10-12 times depending on whether one considers LBOs as acquisitions. In some cases, it was a terrific experience, better benefits, etc. In three cases, it was a total disaster, lots of turnover, etc. In one case, the acquiring company offered some of us lateral moves to a new city but essentially treating us as new hires. Most of us said no. The last example, my position was eliminated and I was paid to retire early. Bottom line, as other have noted, it’s always different. Depending on your position, keep your head down, stay engaged, and do the best job you can. And expect chaos and frustration.