알티뮨(주)
US ˙ NasdaqGM ˙ US02155H2004

SecurityALT / Altimmune, Inc.
InstitutionFmr Llc
Latest Disclosed Ownership673,964 shares
Latest Disclosed Value $ 2,075,808
Fmr Llc reports 19.48% increase in ownership of ALT / Altimmune, Inc.

On May 15, 2026 - Fmr Llc filed a 13F-HR form disclosing ownership of 673,964 shares of Altimmune, Inc. (US:ALT) valued at $2,075,809 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 564,093 shares of Altimmune, Inc.. This represents a change in shares of 19.48% during the quarter. The current value of the position is $1,967,975 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 ALTIMMUNE COM NEW 02155H200 673,964 109,871 19.48 2,076 1.92 0.0000
2026-02-17 2025-12-31 13F ALTIMMUNE COM NEW 02155H200 564,093 118,956 26.72 2,036 21.33 0.0001
2025-11-13 2025-09-30 13F ALTIMMUNE COM NEW 02155H200 445,137 43,294 10.77 1,678 7.91 0.0001
2025-08-14 2025-06-30 13F ALTIMMUNE COM NEW 02155H200 401,843 381,040 1,831.66 1,555 1,395.19 0.0001
2025-05-12 2025-03-31 13F ALTIMMUNE COM NEW 02155H200 20,803 -35,936 -63.34 104 -74.57 0.0000
2025-02-13 2024-12-31 13F ALTIMMUNE COM NEW 02155H200 56,739 5,679 11.12 409 30.67 0.0000
2024-11-13 2024-09-30 13F ALTIMMUNE COM NEW 02155H200 51,060 43,166 546.82 314 501.92 0.0000
2024-08-13 2024-06-30 13F ALTIMMUNE COM NEW 02155H200 7,894 -3,218 -28.96 52 -53.98 0.0000
2024-05-13 2024-03-31 13F ALTIMMUNE COM NEW 02155H200 11,112 -50,994 -82.11 113 -83.81 0.0000
2024-02-13 2023-12-31 13F ALTIMMUNE COM NEW 02155H200 62,106 -4,941 -7.37 699 301.15 0.0001
2023-11-13 2023-09-30 13F ALTIMMUNE COM NEW 02155H200 67,047 66,263 8,451.91 174 8,600.00 0.0000
2023-08-11 2023-06-30 13F ALTIMMUNE COM NEW 02155H200 784 -1,179 -60.06 3 -75.00 0.0000
2023-08-11 2023-03-31 13F/A-1 ALTIMMUNE COM NEW 02155H200 1,963 -324 -14.17 8 -78.38 0.0000
2023-05-11 2023-03-31 13F ALTIMMUNE COM NEW 02155H200 1,963 -324 8 0.0000
2023-02-13 2022-12-31 13F ALTIMMUNE COM NEW 02155H200 2,287 -38,426 -94.38 38 -92.88 0.0000
2022-11-10 2022-09-30 13F ALTIMMUNE COM NEW 02155H200 40,713 39,920 5,034.05 520 5,677.78 0.0001
2022-08-12 2022-06-30 13F ALTIMMUNE COM NEW 02155H200 793 285 56.10 9 200.00 0.0000
2022-05-13 2022-03-31 13F ALTIMMUNE COM NEW 02155H200 508 508 3 0.0000
2022-02-14 2021-09-30 13F/A-1 ALTIMMUNE COM NEW 02155H200 0 -1 -100.00 0 0.0000
2021-11-15 2021-09-30 13F ALTIMMUNE COM NEW 02155H200 0 -1 0 0.0000
2021-08-13 2021-06-30 13F ALTIMMUNE COM NEW 02155H200 1 1 0 0.0000
2021-05-14 2021-03-31 13F ALTIMMUNE COM NEW 02155H200 0 -1 -100.00 0 0.0000
2021-02-08 2020-12-31 13F ALTIMMUNE COM NEW 02155H200 1 1 0 0.0000
2020-11-13 2020-09-30 13F ALTIMMUNE COM NEW 02155H200 0 -1,600 -100.00 0 -100.00
2020-08-24 2020-06-30 13F/A-1 ALTIMMUNE COM NEW 02155H200 1,600 1,600 17 0.0000
2020-08-13 2020-06-30 13F ALTIMMUNE COM NEW 02155H200 1,600 1,600 17 0.4176
2020-02-07 2019-12-31 13F ALTIMMUNE COM NEW 02155H200 0 -1 -100.00 0 -100.00 0.0000
2019-11-13 2019-09-30 13F ALTIMMUNE COM NEW 02155H200 1 1 0 0.0000
2016-02-12 2015-12-31 13F PHARMATHENE COM 71714G102 0 -324,290 -100.00 0 -100.00
2015-11-10 2015-09-30 13F PHARMATHENE COM 71714G102 324,290 213,949 193.90 431 110.24 0.0001
2014-02-13 2013-12-31 13F PHARMATHENE COM 71714G102 110,341 110,341 -65.97 205 -52.44 0.0000
2013-11-14 2013-09-30 13F PHARMATHENE COM 71714G102 0 -116,702 -100.00 0 -100.00
2013-09-24 2013-06-30 13F/A-1 PHARMATHENE COM 71714G102 116,702 116,702 186 0.0000
2013-08-14 2013-06-30 13F PHARMATHENE COM 71714G102 116,702 186 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.