KALA ▼ -11.9% - KALA BIO, Inc. $KALA - Kala Bio and Virotek Announce Letter of Intent to Establish an Exclusive U.S. Distribution Partnership for Ophthalmology Genetic Testing Program Kala Bio fell 11.9% today despite announcing a letter of intent with Virotek to establish an exclusive U.S. distribution partnership for an ophthalmology genetic testing program. The decline suggests investors may have viewed the partnership terms, scope, or revenue potential as underwhelming relative to prior expectations. 01-SEP-2026 07:45 AM ET