The company lost $182 million, or $2.28 per share, in the fourth quarter on weaker-than-expected sales of $357 million.
Novavax's shares closed at $9.26 on Tuesday and fell to $6.90 in extended trading after reporting on its financial situation.
"We're in the process of assessing the global footprint of Novavax, rationalizing our supply chain, rationalizing the portfolio and rationalizing the company structure and our infrastructure," he said.
In the U.S., where the Novavax vaccine was authorized in July 2022, only around 80,000 of its shots have been administered.
Jacobs said that while Novavax's vaccine may take longer to manufacture than its rivals from Pfizer (PFE.N)/BioNTech (22UAy.DE) and Moderna (MRNA.O), he believes FDA regulators want a protein-based option this fall for U.S. citizens.