** Shares of Sutro Biopharma Inc STRO.O up ~5% at $7 after
market
** Sutro PCVX.O agrees to provide Vaxcyte expanded rights
to develop and manufacture cell-free extract, a key component of
Vaxcyte's vaccine candidates
** Sutro to receive $22.5 mln in upfront payment, eligible
for up to an additional $135 mln pending exercise of an option
and from other milestones as part of the agreement
** Agreement authorizes Vaxcyte to enter into a contract
with an alternate contract manufacturing organization (CMO) to
source the extract and have direct oversight over some aspects
of relationship with the CMO
** As of last close, STRO shares down ~55% YTD
(Reporting by Raghav Mahobe)
((Raghav.Mahobe@thomsonreuters.com;))