I learned that Equifax creates an "Employment Data Report" that includes your work salary. And companies can request that data. https://www.theworknumber.com/employees/employment-data-report/ You have to give companies permission to access the report however. Give it a try yourself
Would be very surprised 8f companies actually report that data, especially for rsu
Why wouldn’t they?
It is used extensively for loan verification.
Would companies requesting this be legal in california?
IANAL but companies can only request the information from Equifax with your consent. Requiring your consent to pull your salary data would be the same as asking you your current salary. This data is mostly useful for lenders and landlords.