Armata Pharmaceuticals, Inc. (ARMP) Institutional Ownership

Ownership Summary

A total of 27 institutions have reported a stake in Armata Pharmaceuticals, Inc. (NYSE:ARMP) as of September 2025, according to recent 13F filings with the SEC.

• Institutional ownership in Armata Pharmaceuticals edged up to 2.1% in September 2025, compared to 2.0% in June 2025.
• In percentage terms, this reflects as a holdings change of 5.50% quarter on quarter, and an increase of 17.39% year over year.
• A review of institutional activity for Armata Pharmaceuticals shows 6 of 27 filers increasing their positions, while 4 reduced their stake, and 17 remained unchanged.
• This class of investors increased its holdings in Armata Pharmaceuticals to 758.32K shares for the 13F-cycle ending September 2025, up by 39.51K shares quarter on quarter, and down 625.35K shares year over year.
• With 297.04K shares, VANGUARD GROUP INC commands the largest institutional position in Armata Pharmaceuticals as of September 30, 2025, equating to 0.82% of the company.
• Among the most significant buyers of Armata Pharmaceuticals during September 2025 were VANGUARD GROUP INC (36.97K), RENAISSANCE TECHNOLOGIES LLC (2.40K), Measured Wealth Private Client Group, LLC (1.00K), BlackRock, Inc. (748), UBS Group AG (43).
• Leading sellers of Armata Pharmaceuticals stock in September 2025 included Tower Research Capital LLC (TRC) (1.35K), MORGAN STANLEY (107), SALEM INVESTMENT COUNSELORS INC (100), BANK OF AMERICA CORP /DE/ (96).
• The top 10 institutional holders of Armata Pharmaceuticals for the quarter ending September 2025 included VANGUARD GROUP INC (297.04K), GEODE CAPITAL MANAGEMENT, LLC (104.55K), EDGEWOOD MANAGEMENT LLC (100.00K), BRIDGEWAY CAPITAL MANAGEMENT, LLC (44.68K), RENAISSANCE TECHNOLOGIES LLC (41.30K), STATE STREET CORP (40.30K), SeaCrest Wealth Management, LLC (34.95K), Grey Ledge Advisors, LLC (30.00K), BlackRock, Inc. (26.67K), NORTHERN TRUST CORP (19.27K).