ARMATA PHARMACEUTICALS INC ARMP
COM · Common Stock · CUSIP 04216R102
Company in Los Angeles, United States
- SectorHealth care
- IndustryBiological Products, (No Diagnostic Substances)
- HeadquartersLos Angeles, CA
- Websitearmatapharma.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Shares outstanding: 37.2m as of 2026-08-06, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $6.48. Options: 0 managers hold calls (— notional), 1 hold puts ($10.4k).
Trends to Q2 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 21 |
| Q4 2022 | 27 |
| Q1 2023 | 24 |
| Q2 2023 | 23 |
| Q3 2023 | 24 |
| Q4 2023 | 26 |
| Q1 2024 | 25 |
| Q2 2024 | 24 |
| Q3 2024 | 25 |
| Q4 2024 | 25 |
| Q1 2025 | 27 |
| Q2 2025 | 30 |
| Q3 2025 | 28 |
| Q4 2025 | 36 |
| Q1 2026 | 45 |
| Q2 2026 | 53 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2024 | 8 | 8 |
| Q4 2024 | 5 | 9 |
| Q1 2025 | 4 | 9 |
| Q2 2025 | 10 | 6 |
| Q3 2025 | 7 | 6 |
| Q4 2025 | 22 | 5 |
| Q1 2026 | 21 | 7 |
| Q2 2026 | 36 | 14 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2025 | $0 | $0 | — |
| Q4 2025 | $0 | $0 | — |
| Q1 2026 | $0 | $0 | — |
| Q2 2026 | $0 | $10.4k | — |
Biggest buyers
| BlackRock, Inc. | Added | +494.9k |
| MILLENNIUM MANAGEMENT LLC | Added | +212.5k |
| GEODE CAPITAL MANAGEMENT, LLC | Added | +156.0k |
| VANGUARD CAPITAL MANAGEMENT LLC | Added | +121.9k |
| Dauntless Investment Group, LLC | Added | +113.3k |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New | +81.4k |
| STATE STREET CORP | Added | +78.8k |
| NORTHERN TRUST CORP | Added | +65.1k |
| Bank of New York Mellon Corp | New | +29.7k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | New | +28.9k |
Biggest sellers
| 683 Capital Management, LLC | Sold out | -137.0k |
| SEI INVESTMENTS CO | Sold out | -74.2k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Sold out | -64.8k |
| Informed Momentum Co LLC | Sold out | -61.0k |
| GOLDMAN SACHS GROUP INC | Sold out | -61.0k |
| JANE STREET GROUP, LLC | Sold out | -28.0k |
| Qube Research & Technologies Ltd | Sold out | -26.6k |
| EDGEWOOD MANAGEMENT LLC | Reduced | -20.0k |
| HRT FINANCIAL LP | Sold out | -10.6k |
| Madison Asset Management, LLC | Reduced | -500 |
Biggest calls
| None |
Biggest puts
| SIMPLEX TRADING, LLC | New | $10.4k1.6k shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
Innoviva, Inc.
13D · may seek influence
-0.4 pts · filed 2026-05-13
Stated purposeItem 4 in Schedule 13D is hereby supplemented as follows: On May 12, 2026, the Issuer entered into, as borrower, a credit and security agreement (the "May 2026 Credit Agreement") with Innoviva Sub, as lender, pursuant to which the Issuer borrowed from Innoviva Sub $25,000,000. On the date of this Amendment No. 15, the Reporting Persons collectively own 25,076,769 shares of Common Stock of the Issuer, warrants to acquire an additional 10,653,847 shares of Common Stock of the Issuer, and the right to acquire an additional 19,736,843 shares of Common Stock of the Issuer upon conversion of the convertible loan (excluding any accrued interest). Full filing |
82.7% |
Insider purchases and sales since 1 Apr 2026
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
None reported since 1 Apr 2026.
Holders, Q2 2026
| Manager | Shares | Change |
|---|---|---|
| Madison Asset Management, LLC 0.16% of their portfolio | 2.1m $13.7m | Reduced -500 |
| BlackRock, Inc. 0.00% of their portfolio | 560.0k $3.6m | Added +494.9k |
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 488.0k $3.2m | Added +121.9k |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 470.5k $3.0m | Added +212.5k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 270.6k $1.8m | Added +156.0k |
| Dauntless Investment Group, LLC 2.29% of their portfolio | 203.9k $1.3m | Added +113.3k |
| STATE STREET CORP 0.00% of their portfolio | 129.6k $839.8k | Added +78.8k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 89.8k $581.8k | Added +65.1k |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.00% of their portfolio | 81.4k $527.2k | New |
| EDGEWOOD MANAGEMENT LLC 0.01% of their portfolio | 80.0k $518.4k | Reduced -20.0k |
| VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio | 79.5k $515.1k | Added +11.6k |
| Grey Ledge Advisors, LLC 0.07% of their portfolio | 50.0k $324.0k | Added +20.0k |
| RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio | 48.3k $313.1k | Added +9.8k |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 44.7k $289.5k | Unchanged |
| SeaCrest Wealth Management, LLC 0.03% of their portfolio | 41.5k $269.1k | Unchanged |
| Bank of New York Mellon Corp 0.00% of their portfolio | 29.7k $192.8k | New |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 28.9k $187.0k | New |
| Hudson Bay Capital Management LP 0.00% of their portfolio | 17.6k $113.9k | Unchanged |
| Nuveen, LLC 0.00% of their portfolio | 15.9k $103.1k | New |
| NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio | 15.4k $99.8k | New |
| UBS Group AG 0.00% of their portfolio | 13.7k $88.8k | Added +9.3k |
| CAPTRUST FINANCIAL ADVISORS 0.00% of their portfolio | 13.1k $85.1k | Unchanged |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 12.0k $77.5k | New |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 11.3k $73.3k | Reduced -409 |
| XTX Topco Ltd 0.00% of their portfolio | 10.8k $70.2k | New |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 10.8k $70.1k | Added +10.8k |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 8.5k $54.8k | New |
| Police & Firemen's Retirement System of New Jersey 0.00% of their portfolio | 6.1k $39.5k | New |
| CITIGROUP INC 0.00% of their portfolio | 5.6k $36.3k | Added +443 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio | 5.5k $35.4k | New |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 4.9k $31.8k | New |
| MORGAN STANLEY 0.00% of their portfolio | 4.6k $29.7k | Added +1.2k |
| Vanguard Global Advisers, LLC 0.00% of their portfolio | 4.0k $25.7k | Unchanged |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 3.0k $19.7k | New |
| BARCLAYS PLC 0.00% of their portfolio | 3.0k $19.3k | Added +2.8k |
| STRS OHIO 0.00% of their portfolio | 2.3k $14.9k | New |
| Tower Research Capital LLC (TRC) 0.00% of their portfolio | 2.0k $13.2k | Added +1.8k |
| Cornerstone National Bank & Trust Co 0.00% of their portfolio | 1.4k $8.4k | Unchanged |
| Legal & General Group Plc 0.00% of their portfolio | 1.2k $7.5k | New |
| Ameritas Investment Partners, Inc. 0.00% of their portfolio | 1.1k $7.0k | New |
| Measured Wealth Private Client Group, LLC 0.00% of their portfolio | 1.0k $6.5k | Unchanged |
| Russell Investments Group, Ltd. 0.00% of their portfolio | 969 $6.3k | New |
| SIMPLEX TRADING, LLC 0.00% of their portfolio | 794 $5.1k | New |
| Trifecta Capital Advisors, LLC 0.00% of their portfolio | 714 $4.6k | Unchanged |
| NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO 0.00% of their portfolio | 571 $3.7k | Unchanged |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 497 $3.0k | New |
| FMR LLC 0.00% of their portfolio | 364 $2.4k | Added +342 |
| Silver Grove Financial Group, Inc. 0.00% of their portfolio | 200 $1.3k | Unchanged |
| SALEM INVESTMENT COUNSELORS INC 0.00% of their portfolio | 100 $648 | Unchanged |
| WHITTIER TRUST CO 0.00% of their portfolio | 100 $544 | Unchanged |
| Geneos Wealth Management Inc. 0.00% of their portfolio | 92 $596 | Unchanged |
| Sterling Capital Management LLC 0.00% of their portfolio | 42 $272 | New |
| SBI Securities Co., Ltd. 0.00% of their portfolio | 3 $19 | Unchanged |