ROCKVILLE, Md. (AP) — ROCKVILLE, Md. (AP) — Theriva Biologics, Inc. (TOVX) on Tuesday reported a loss of $3.2 million…ROCKVILLE, Md. (AP) — ROCKVILLE, Md. (AP) — Theriva Biologics, Inc. (TOVX) on Tuesday reported a loss of $3.2 million in its second quarter.