13G Filing: Matrix Capital Management and Trillium Therapeutics Inc (TRIL)

Employee benefit plan or endowment fund in accordance
with

Rule 13d-1(b)(1)(ii)(F);

Parent holding company or control person in
accordance with

Rule 13d-1(b)(1)(ii)(G);

Savings association as defined in Section 3(b)
of the Federal Deposit Insurance Act (12 U.S.C. 1813);

Church plan that is excluded from the definition
of an investment company under Section 3(c)(14) of the Investment Company Act (15 U.S.C. 80a-3);

If filing as a non-U.S. institution in accordance with Rule 13d-1(b)(1)(ii)(J),
please

specify
the type of institution: ____________________________________

The information required by Items 4(a) – (c) is set forth in Rows
5 – 11 of the cover page for each of the Reporting Persons and is incorporated herein by reference.

The Company informed the Reporting Persons in writing that as of
December 5, 2017, there were 13,146,239 Common Shares outstanding. The percentages set forth herein are calculated based upon such
number of outstanding Common Shares.