Anybody with more than $5 million in the bank should have someone dedicated to managing that money. If you don’t, then you’re not running a business properly. Startups like to skimp on important things like that and they shouldn’t. Any CFO with basic skills should be doing or arranging this depending on the size of the company. That’s literally their job.
It’s simply poor money management by the employer to assume you can toss $1M-$5M in a business checking account and have zero risk. It’s not a personal account and it is clearly over the FDIC limits.
Anyone with $250K net worth knows there is risk here. Even my 80+ mother who is NOT finance savvy knows about this $250k limit and manages her life savings in different money market accounts to limit her exposure.