The 33 year-old ex-banker received a jail term, a life-time ban from working within the financial services industry and ordered to repay the lost sum.
Dominic Pauthe, the ruling judge, found the former-employee guilty of abuse of trust, forgery and computer hacking.
In an interview with Europe1 radio, Mr Kerviel said: âI'm starting to digest it, but I'm nonetheless crushed by the weight of the sanction and the weight of responsibility the ruling places on me.â
He compared the verdict with being âhit on the head with a clubâ and added: âI have the feeling like they want to make me pay for all.â
Olivier Metzner, lawyer for Mr Kerviel, dubbed the decision by the judging panel âunreasonableâ and stated that the former traderâs legal team would mount an immediate appeal to overturn the verdict.
The banker is currently expected to pay back the â¬4.9 billion sum - although he is only currently earning â¬900 per month.
By Jim Ottewill