Altimmune, Inc.

Historical 13F Holders

Symbol
ALT
CUSIP
02155H200
All holders as of
Q2 2026
Type
Equity
Class
COM NEW
Reported Value, Excluding Options
Total Filings

13D/G Filers

Investors who own more than 5% of a class must file a Schedule 13D or 13G. Every filing for 02155H200 since 12/18/2024, newest first.

Filer % of Class Filed
Tang Capital Management LLC 13G/A Amendment 3
0.3% 5/15/2026
Event 3/31/2026
State Street Corp 13G 5.5% 5/12/2026
Event 3/31/2026
RA Capital Management, L.P. 13G
6.5% 5/1/2026
Event 4/24/2026
TCG Crossover GP II, LLC 13G
9.8% 5/1/2026
Event 4/24/2026
Viking Global Investors LP 13G
6.7% 5/1/2026
Event 4/24/2026
Deep Track Capital, LP 13G
10.0% 4/30/2026
Event 4/23/2026
Vanguard Group Inc 13G/A Amendment 3 0% 3/26/2026
Event 3/13/2026
Vanguard Group Inc 13G/A Amendment 2 9.1% 1/30/2026
Event 12/31/2025
BlackRock, Inc. 13G/A Amendment 2 7.6% 7/16/2025
Event 6/30/2025
Ameriprise Financial, Inc. 13G/A Amendment 3
1.9% 5/15/2025
Event 3/31/2025
Ameriprise Financial, Inc. 13G/A Amendment 2
7.4% 2/14/2025
Event 12/31/2024
BlackRock, Inc. 13G/A Amendment 1 8.7% 2/5/2025
Event 12/31/2024

13F Holders by Quarter

Period Filings Shares, Excl. Options Value, Excl. Options
2026 Q3 4 2.77 k $7.92 k
2026 Q2 223 152 M $463 M
2026 Q1 183 69.4 M $214 M
2025 Q4 207 55.2 M $199 M
2025 Q3 183 41.6 M $157 M
2025 Q2 216 37.7 M $146 M
2025 Q1 200 38.2 M $191 M
2024 Q4 205 40.6 M $293 M
2024 Q3 184 39.7 M $243 M
2024 Q2 190 44.0 M $293 M
2024 Q1 193 48.9 M $498 M
2023 Q4 158 35.2 M $396 M
2023 Q3 121 30.3 M $79.1 M
2023 Q2 132 35.3 M $125 M
2023 Q1 167 43.4 M $205 M
2022 Q4 158 52.7 M $1.13 B
2022 Q3 153 50.2 M $641 M
2022 Q2 122 39.9 M $467 M
2022 Q1 112 33.7 M $207 M
2021 Q4 121 33.7 M $307 M
2021 Q3 140 32.9 M $375 M
2021 Q2 128 27.3 M $269 M
2021 Q1 111 23.8 M $337 M
2020 Q4 105 20.8 M $235 M
2020 Q3 84 21.9 M $289 M
2020 Q2 72 13.4 M $143 M
2020 Q1 38 1.59 M $5.10 M
2019 Q4 31 1.38 M $2.60 M
2019 Q3 33 1.12 M $2.18 M
2019 Q2 31 1.13 M $2.70 M
2019 Q1 26 1.12 M $3.24 M
2018 Q4 29 831 k $1.71 M
2018 Q3 17 194 k $853 k
2017 Q3 1 100 $232.00
2017 Q2 1 100 $320.00