EXHIBIT 99.2

This restricted stock unit award was granted to Matthew
Rizzo, a director of Xtant who is an employee of Advisors,
a registered adviser under the Investment Advisors Act
of 1940, as amended, who was designated by Advisors to
sit on the Xtant's board of directors. Upon vesting of
the restricted stock unit award, ownership of the shares
underlying the restricted stock unit award will be
transferred to ROS Acquisition and ORO II. Advisors is
the investment manager of ROS Acquisition. Advisors is
also the investment manager of Royalty Opportunities
S.a.r.l., of which ROS Acquisition is a wholly-owned
subsidiary.  ROF II is the sole general partner of
ORO II, and Advisors is the sole managing member of
ROF II. By virtue of such relationships, Advisors and
ROF II may be deemed to have voting and investment power
with respect to the securities held by ROS Acquisition
and ORO II and, as a result, may be deemed to have
beneficial ownership over such securities. Advisors
exercises its investment and voting power through a
management committee comprised of Carl L. Gordon,
Sven H. Borho, and Jonathan T. Silverstein, each of
whom disclaims beneficial ownership of the securities
held by ROS Acquisition and ORO II.