A move by Chimerix Inc. to strengthen its balance sheet by $225 million through the sale of smallpox drug Tembexa (brincidofovir) to biodefense specialist Emergent Biosolutions Inc. and extend its cash runway into 2026, should have proved a big win. Instead, shares (NASDAQ:CMRX) plunged nearly 61% May 16 on worry that Chimerix might be handing off a likely profitable program to fund a riskier oncology pipeline, a concern heightened by recent U.S. FDA feedback indicating lead oncology program ONC-201 might not be eligible for accelerated approval as previously expected.