1. Both financing and debt packages usually take longer than anticipated. They may want the additional capital from a timing perspective.
2. The more liquidity you have on the balance sheet at the time of discussions improves your leverage in the negotiation.
3. As someone else stated, minimum capital requirements for push to US based exchange.
4. Additional cash to being ramping up hiring of staff for the beginning of the production phase while the financing package details and paperwork are being completed. Another way to run parallel paths and improve speed to production.
There are 4 more off the top of my head. If you really think Niocorp was concerned about a lack of significant SP increase post FS, don't you think they would raise more than $1MM CAD. Also, wouldn't any share price appreciation be better to raise money than right now? Obviously, it depends on one's viewpoint, but the negative viewpoint, in my mind anyway, doesn't seem to add up. It is more likely that it gives them greater flexibility with little effort.