Faye, it depends.
If UMPQ is trading below $13 when the deal closes, then your 1000 shares of INFN become 827 (not, alas, 875)shares of UMPQ. If your cost for INFN is $10.05/share = $10,050, then you break even if UMPQ is at $12.16 or better.
But if UMPQ is trading above $13 when the deal closes, you get only 800 shares of UMPQ, and you then break even if UMPQ is at $12.57 or better.
As these are still lightly-traded stocks, the bid-asked spread and the commissions take a chunk of the possible profit on the deal.
Hope this helps,
Smallbanks