The net loss is the only number you really need to know. You can deduct $3,000 against your income and carry the rest over to deduct next year.

Wash sale Loss Disallowed happens when you sell at a loss and buy the same thing again within 30 days (before or after). It means that loss doesn't count for taxes, but if you sell the position later (for more than 30 days) you get the loss back again (because the amount that was disallowed before gets added to the cost basis).