Armata PharmaceuticalsARMP
13F holders, Q1 2026 (March 31)At the end of Q1 2026, 45 institutions reported holding Armata Pharmaceuticals Inc. (ARMP) in their 13F filings, up 9 from Q4 2025. 10 opened new positions and 3 sold out. The largest holders were Madison Asset Management, LLC ($21.6M), Vanguard Capital Management LLC ($3.7M) and Millennium Management ($2.6M). 2 famous investors held it, including Israel Englander (0.0% of Millennium Management's portfolio) and Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio).
- Company
- Armata Pharmaceuticals Inc.
- CUSIP
- 04216R102
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 10 | $23.3M |
| Exits | 3 | $249K |
All 13F filers, Q4 2025 → Q1 2026: 2,681,123 shares bought and 81,522 shares sold, net +2,599,601 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 45 holders
| Madison Asset Management, LLC | 0.27% | New | 2,107,675 | $21.6M |
| Vanguard Capital Management LLC | 0.00% | — | 366,028 | $3.7M |
| Millennium Management | 0.00% | Add +888.9% | 257,992 | $2.6M |
| 683 Capital Management, LLC | 0.14% | Reduce -2.0% | 137,000 | $1.4M |
| Geode Capital Management, LLC | 0.00% | Add +4.3% | 114,555 | $1.2M |
| Edgewood Management LLC | 0.01% | No change | 100,000 | $1.0M |
| Dauntless Investment Group, LLC | 2.61% | Add +1377.4% | 90,580 | $928K |
| Sei Investments Co. | 0.00% | New | 74,192 | $760K |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 67,864 | $695K |
| BlackRock, Inc. | 0.00% | Reduce -10.6% | 65,050 | $666K |
| Susquehanna International Group, LLP | 0.00% | Add +165.8% | 64,759 | $663K |
| Informed Momentum Co LLC | 0.07% | New | 60,955 | $624K |
| Goldman Sachs Group Inc. | 0.00% | Add +35.0% | 60,953 | $624K |
| State Street Corp. | 0.00% | No change | 50,800 | $520K |
| Bridgeway Capital Management, LLC | 0.01% | No change | 44,682 | $458K |
| SeaCrest Wealth Management, LLC | 0.05% | Add +1.3% | 41,524 | $425K |
| Renaissance Technologies | 0.00% | Reduce -43.8% | 38,496 | $394K |
| Grey Ledge Advisors, LLC | 0.07% | No change | 30,000 | $307K |
| Jane Street Group, LLC | 0.00% | Add +63.2% | 27,998 | $287K |
| Qube Research & Technologies Ltd | 0.00% | Add +14.0% | 26,628 | $273K |
| Northern Trust Corp. | 0.00% | No change | 24,646 | $252K |
| Hudson Bay Capital Management LP | 0.00% | New | 17,584 | $180K |
| Captrust Financial Advisors | 0.00% | No change | 13,140 | $135K |
| Bank of America Corp. | 0.00% | Add +233.2% | 11,714 | $120K |
| HRT Financial LP | 0.00% | New | 10,595 | $108K |
| Citigroup Inc. | 0.00% | New | 5,160 | $53K |
| UBS Group AG | 0.00% | Add +325.9% | 4,349 | $45K |
| Vanguard Global Advisers, LLC | 0.00% | — | 3,964 | $41K |
| Morgan Stanley | 0.00% | Add +48.4% | 3,367 | $34K |
| Cornerstone National Bank & Trust Co | 0.01% | No change | 1,428 | $15K |
| Measured Wealth Private Client Group, LLC | 0.00% | No change | 1,000 | $10K |
| Trifecta Capital Advisors, LLC | 0.00% | No change | 714 | $7K |
| Northwestern Mutual Wealth Management Co. | 0.00% | No change | 571 | $6K |
| Osaic Holdings, Inc. | 0.00% | No change | 357 | $4K |
| Tower Research Capital LLC (TRC) | 0.00% | Reduce -82.7% | 277 | $3K |
| Silver Grove Financial Group, Inc. | 0.00% | New | 200 | $2K |
| Barclays PLC | 0.00% | New | 154 | $2K |
| Whittier Trust Co. | 0.00% | No change | 100 | $1K |
| Salem Investment Counselors Inc. | 0.00% | New | 100 | $1K |
| Geneos Wealth Management Inc. | 0.00% | No change | 92 | $942 |
| MAI Capital Management | 0.00% | No change | 71 | $728 |
| Team Financial Group, LLC | 0.00% | No change | 71 | $727 |
| FMR LLC | 0.00% | New | 22 | $225 |
| SBI Securities Co., Ltd. | 0.00% | No change | 3 | $31 |
| Wells Fargo & Company | 0.00% | No change | 1 | $5 |
"% of holder's portfolio" is ARMP's weight in each manager's 13F, not the share of Armata Pharmaceuticals Inc. the manager owns.