Armata Pharmaceuticals, Inc.
US ˙ NYSEAM ˙ US04216R1023

SecurityARMP / Armata Pharmaceuticals, Inc.
InstitutionMorgan Stanley
Latest Disclosed Ownership3,367 shares
Latest Disclosed Value $ 34,478
Morgan Stanley reports 48.39% increase in ownership of ARMP / Armata Pharmaceuticals, Inc.

On May 15, 2026 - Morgan Stanley filed a 13F-HR form disclosing ownership of 3,367 shares of Armata Pharmaceuticals, Inc. (US:ARMP) valued at $34,478 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on May 27, 2026 disclosing 2,269 shares of Armata Pharmaceuticals, Inc.. This represents a change in shares of 48.39% during the quarter. The current value of the position is $25,892 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F ARMATA PHARMACEUTICALS COM 04216R102 3,367 1,098 48.39 34 142.86 0.0000
2026-05-27 2025-12-31 13F/A-1 ARMATA PHARMACEUTICALS COM 04216R102 2,269 2,267 113,350.00 14 0.0000
2026-02-13 2025-12-31 13F ARMATA PHARMACEUTICALS COM 04216R102 2,269 2,267 14
2026-05-27 2025-09-30 13F/A-1 ARMATA PHARMACEUTICALS COM 04216R102 2 -107 -98.17 0 0.0000
2025-11-14 2025-09-30 13F ARMATA PHARMACEUTICALS COM 04216R102 2 -107 0 0.0000
2025-08-15 2025-06-30 13F ARMATA PHARMACEUTICALS COM 04216R102 109 0 0.00 0 0.0000
2025-05-15 2025-03-31 13F ARMATA PHARMACEUTICALS COM 04216R102 109 0 0.00 0 0.0000
2025-05-15 2024-12-31 13F/A-1 ARMATA PHARMACEUTICALS COM 04216R102 109 0 0.00 0 0.0000
2025-02-14 2024-12-31 13F ARMATA PHARMACEUTICALS COM 04216R102 109 0 0 0.0000
2025-05-14 2024-09-30 13F/A-2 ARMATA PHARMACEUTICALS COM 04216R102 109 107 5,350.00 0 0.0000
2025-02-14 2024-09-30 13F/A-1 ARMATA PHARMACEUTICALS COM 04216R102 109 107 0 0.0000
2024-11-14 2024-09-30 13F ARMATA PHARMACEUTICALS COM 04216R102 109 107 0 0.0000
2025-05-14 2024-06-30 13F/A-2 ARMATA PHARMACEUTICALS COM 04216R102 2 -424 -99.53 0 -100.00 0.0000
2024-10-17 2024-06-30 13F/A-1 ARMATA PHARMACEUTICALS COM 04216R102 2 -424 0 0.0000
2024-08-14 2024-06-30 13F ARMATA PHARMACEUTICALS COM 04216R102 2 -424 0 0.0000
2024-10-17 2024-03-31 13F/A-2 ARMATA PHARMACEUTICALS COM 04216R102 426 424 21,200.00 2 0.0000
2024-08-16 2024-03-31 13F/A-1 ARMATA PHARMACEUTICALS COM 04216R102 426 424 2 0.0000
2024-05-15 2024-03-31 13F ARMATA PHARMACEUTICALS COM 04216R102 426 424 2 0.0000
2024-08-16 2023-12-31 13F/A-1 ARMATA PHARMACEUTICALS COM 04216R102 2 0 0.00 0 0.0000
2024-02-13 2023-12-31 13F ARMATA PHARMACEUTICALS COM 04216R102 2 0 0 0.0000
2023-11-15 2023-09-30 13F ARMATA PHARMACEUTICALS COM 04216R102 2 0 0.00 0 0.0000
2023-08-14 2023-06-30 13F ARMATA PHARMACEUTICALS COM 04216R102 2 0 0.00 0 0.0000
2023-05-15 2023-03-31 13F ARMATA PHARMACEUTICALS COM 04216R102 2 -12 -85.71 0 0.0000
2023-02-14 2022-12-31 13F ARMATA PHARMACEUTICALS COM 04216R102 14 13 1,300.00 0 0.0000
2022-11-14 2022-09-30 13F ARMATA PHARMACEUTICALS COM 04216R102 1 -1,070 -99.91 0 -100.00
2022-10-27 2022-06-30 13F/A-1 ARMATA PHARMACEUTICALS COM 04216R102 1,071 0 0.00 4 -20.00 0.0000
2022-08-15 2022-06-30 13F ARMATA PHARMACEUTICALS COM 04216R102 1,071 0 4 0.0000
2022-10-27 2022-03-31 13F/A-1 ARMATA PHARMACEUTICALS COM 04216R102 1,071 -14 -1.29 5 -16.67 0.0000
2022-05-13 2022-03-31 13F ARMATA PHARMACEUTICALS COM 04216R102 1,071 -14 5 0.0000
2022-02-14 2021-12-31 13F ARMATA PHARMACEUTICALS COM 04216R102 1,085 -58 -5.07 6 50.00 0.0000
2021-11-15 2021-09-30 13F ARMATA PHARMACEUTICALS COM 04216R102 1,143 -849 -42.62 4 -50.00 0.0000
2021-08-23 2021-06-30 13F/A-1 ARMATA PHARMACEUTICALS COM 04216R102 1,992 0 0.00 8 -20.00 0.0000
2021-08-16 2021-06-30 13F ARMATA PHARMACEUTICALS COM 04216R102 1,992 0 8 0.0000
2021-05-17 2021-03-31 13F ARMATA PHARMACEUTICALS COM 04216R102 1,992 0 0.00 10 66.67 0.0000
2021-02-16 2020-12-31 13F ARMATA PHARMACEUTICALS COM 04216R102 1,992 0 0.00 6 0.00 0.0000
2020-11-13 2020-09-30 13F ARMATA PHARMACEUTICALS COM 04216R102 1,992 0 0.00 6 -25.00 0.0000
2020-08-14 2020-06-30 13F ARMATA PHARMACEUTICALS COM 04216R102 1,992 0 0.00 8 33.33 0.0000
2020-05-26 2020-03-31 13F/A-1 ARMATA PHARMACEUTICALS COM 04216R102 1,992 0 0.00 6 0.00 0.0000
2020-05-15 2020-03-31 13F ARMATA PHARMACEUTICALS COM 04216R102 1,992 0 6 0.4609
2020-02-14 2019-12-31 13F ARMATA PHARMACEUTICALS COM 04216R102 1,992 -235 -10.55 6 -25.00 0.0000
2019-11-14 2019-09-30 13F ARMATA PHARMACEUTICALS COM 04216R102 2,227 2,084 1,457.34 8 700.00 0.0000
2019-08-14 2019-06-30 13F ARMATA PHARMACEUTICALS COM 04216R102 143 -857 -85.70 1 -87.50 0.0000
2019-05-15 2019-03-31 13F AMPLIPHI BIOSCIENCES COM PAR 03211P301 1,000 -467 -31.83 0 -100.00 0.0000
2019-02-14 2018-12-31 13F AMPLIPHI BIOSCIENCES COM PAR 03211P301 1,467 1,467 46.70 0 0.0000
2018-11-20 2018-09-30 13F/A-1 AMPLIPHI BIOSCIENCES COM PAR 03211P301 0 -70 -100.00 0 0.0000
2019-04-23 2018-06-30 13F/A-1 AMPLIPHI BIOSCIENCES COM PAR 03211P301 70 70 0 0.0000
2018-08-14 2018-06-30 13F AMPLIPHI BIOSCIENCES COM PAR 03211P301 70 70 0
2019-04-23 2017-12-31 13F/A-1 AMPLIPHI BIOSCIENCES COM PAR 03211P301 0 -6 -100.00 0 0.0000
2017-11-14 2017-09-30 13F AMPLIPHI BIOSCIENCES COM PAR 03211P301 6 0 0.00 0 0.0000
2017-08-11 2017-06-30 13F AMPLIPHI BIOSCIENCES COM PAR 03211P301 6 6 0.00 0 0.0000
2016-11-10 2016-09-30 13F AMPLIPHI BIOSCIENCES COM NEW 03211P202 0 -2,241 -100.00 0 -100.00
2016-08-12 2016-06-30 13F AMPLIPHI BIOSCIENCES COM NEW 03211P202 2,241 0 0.00 3 -66.67 0.0000
2016-05-12 2016-03-31 13F AMPLIPHI BIOSCIENCES COM NEW 03211P202 2,241 -4,000 -64.09 9 -64.00 0.0000
2016-02-09 2015-12-31 13F AMPLIPHI BIOSCIENCES COM NEW 03211P202 6,241 2,241 56.02 25 56.25 0.0000
2016-02-08 2015-09-30 13F/A-1 AMPLIPHI BIOSCIENCES COM NEW 03211P202 4,000 4,000 16 0.0000
2015-11-09 2015-09-30 13F AMPLIPHI BIOSCIENCES COM NEW 03211P202 4,000 16 0.0000
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.