Good for him. That's why we have whistleblower laws in the first place. Most of us have a lot to lose by doing the right thing: damaged job prospects may equate to a large future loss of earnings over your career. Still, history shows plenty of people have paid (and continue to pay) a far higher price than that.
The Theranos whistleblower has had to endure about 400k in legal fees.
I also recall reading a story about two police officers (can't remember the city) who tried to reveal corruption in their department, only to be vilified by superiors/fellow officers, have their career trajectory torpedoed, and see people who treated them like garbage eventually elevated in various forms of government.
And of course, there's Snowden who basically had to flee the country to reveal his findings, lest he suffer the consequences of prosecutorial abuse of the Espionage Act in the United States.
For the Police whisleblower I'm not sure if it's the same one, but Adrian Schoolcraft's[1] case was pretty awful. He was mostly documenting relatively mundane (but still nasty) things like being given targets for the amount of littering, jaywalking, open-container etc arrests by the superior officers. However things took a bit of a weird turn, and he ended up with some recordings of the Police harrassing him at his home (including them basically abducting him under false mental health issues, and destroying what they thought was the only mic recording them doing so) are pretty awful - This American Life did a piece on this [2].
That's Chicago based. They were actually secretly working for CPD Internal Affairs, and their CO (who knew of their side work for IA, but not who the subject of the investigation was) leaked it to everyone, which made it nearly impossible for them to actually investigate the particular officer who was suspected of being a local drug kingpin / murderer (convicted much later of a small fraction of the stuff he's alleged to have done). The Intercept ran one of their big series on it. It's definitely an interesting read, but it's lengthy.
