Should I disclose this before receiving the offer?

I have been selected for the pre-offer stage with Tesla in the automotive industry. During the interview process, I was employed at another automotive company. During the interview processes at Teala, I had also received an offer from another organization (Company A) and was serving my notice period to join them.

However, I did not disclose this information to Tesla during the interview process.

Currently, I have exited my current employer andd am in a job transition phase. should I disclose this to tesla now at the pre offer stages , if yes how would they take it, i am very much interested to Jojn Tesla