Armata Pharmaceuticals, Inc. (ARMP:NYSEMKT) closed at $3.87 on November 13, 2026, up 4.03% on the day. The stock trades 74.2% below its 52-week high of $14.98 and 40.7% above its 52-week low of $2.75. Over the past year, it lost 47.1%. Armata Pharmaceuticals, Inc. is part of the Health Care sector (Biotechnology: Biological Products (No Diagnostic Substances)).
In 252 trading sessions since November 13, 2025, ARMP closed higher on 124 days (49%). Its best day was February 24, 2026 (+24.32%) and its worst was December 2, 2025 (-21.57%). The stock moved 10% or more in a single session 45 times. It opened at least 5% above the previous day's high 1 time.
Ampliphi Biosciences Corp is a clinical-stage biotechnology company focused on the development of bacteriophage-based therapies for the treatment of antibiotic-resistant bacterial infections. The company is developing phage product candidates using a proprietary discovery and development platform, which is designed for rapid identification, characterization, and manufacturing of multiple phage therapeutics. The lead product candidates are AB-SA01 for the treatment of Staphylococcus aureus infections; and AB-PA01 for the treatment of Paeruginosa infections.
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Based on end-of-day data. For information only, not investment advice.