The 1099-SA and the 5498-SA are federal forms for HSAs.
However, California does not recognize the special nature of HSAs as pre-tax medical accounts. Instead, California insists that you treat the HSA as a regular investment account (i.e. taxable).
I doubt that any of the statements that you received from the HSA custodian has the information you need.
Instead, you need to contact your HSA custodian and ask to speak to a customer service rep who deals with customers in California and New Jersey (the other state that doesn't recognize HSAs). I have to hope that someone at your HSA custodian understands the situation and tell you what interest, dividends, and capital gains you would have earned had the HSA not been tax-sheltered.
If no one at your HSA custodian knows what I am talking about - switch to another custodian preferably based in California so they know what I am talking about.
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