News of Vaccinex Inc. signing two multitarget deals with undisclosed "prominent pharmaceutical companies" sent company shares (NASDAQ:VCNX) up 70% to $4.88 on Feb. 19, even as financial terms of the deal went undisclosed. The collaborations will focus on using the company's ActivMAb antibody discovery and novel viral display platform to develop candidates against complex antigens such as G protein-coupled receptors and ion channels, the company said.

Shares of Vaccinex Inc. fell to an all-time low on Sept. 22 after top-line results of the phase II trial, Signal, found its SEMA4D inhibitor, pepinemab, failed to improve measures of cognition in people with early manifest Huntington's disease following 18 months of treatment.