* Mercer International-10 percent stock holder, peter kellogg reported open market purchase of 16,974 shares of co's common stock at average price of $11per share on july 7

* Mercer International-10 percent stock holder, peter kellogg reported open market purchase of 25,000 shares of co's common stock at average price of $11.25per share on july 10 Source text (bit.ly/2tbh7l8) Further company coverage: