How concerned should I be about my employer (sizable company, ~300 employees) being reticent to divulge our 409A valuation with me? I've had a hard time (read: never did get; only got my options' fractional ownership in percentage terms after long nagging email chains) in the past getting any information to this effect, and we just raised another round a few months back, so I would like to estimate my tax burden, but they don't seem keen on sharing.