The total supply of EXP is 11.11m + ( 800,000 * 8 + number of mined blocks after block 800,000 * 4 ). The current number in circulation is only 1m + ( 800,000 * 8 + Number of mined blocks after block 800,000 * 4 ). The original block reward was 8 EXP, after block 800,000, the reward was reduced to 4 EXP.
Nine million is currently being stored in a time locked smart contract. These funds will be used for project grants awarded to the Expanse community, EXR (Expanse Rewards), and also a small reserve for developer funding.