Altimmune, Inc. - ALT
Ownership (Schedule 13D / 13G) · latest 50 filings
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| Filed | Form | Reporting person | Percent | Shares | SEC |
|---|---|---|---|---|---|
| May 15, 2026 | SCHEDULE 13G/A | TANG CAPITAL MANAGEMENT, LLC | 0.3% | 666,022 | View |
| May 15, 2026 | SCHEDULE 13G/A | KEVIN TANG | 0.3% | 666,022 | View |
| May 15, 2026 | SCHEDULE 13G/A | TANG CAPITAL PARTNERS, LP | 0.0% | 0 | View |
| May 15, 2026 | SCHEDULE 13G/A | TANG CAPITAL PARTNERS INTERNATIONAL, LP | 0.3% | 666,022 | View |
| May 15, 2026 | SCHEDULE 13G/A | TANG CAPITAL PARTNERS III, INC | 0.0% | 0 | View |
| May 15, 2026 | SCHEDULE 13G/A | TANG CAPITAL PARTNERS IV, INC | 0.0% | 0 | View |
| May 12, 2026 | SCHEDULE 13G | STATE STREET CORPORATION | 5.5% | 7,145,550 | View |
| May 01, 2026 | SCHEDULE 13G | TCG Crossover GP II, LLC | 5.0% | 10,000,000 | View |
| May 01, 2026 | SCHEDULE 13G | TCG Crossover Fund II, L.P. | 5.0% | 10,000,000 | View |
| May 01, 2026 | SCHEDULE 13G | TCG Crossover GP III, LLC | 5.0% | 10,000,000 | View |
| May 01, 2026 | SCHEDULE 13G | TCG Crossover Fund III, L.P. | 5.0% | 10,000,000 | View |
| May 01, 2026 | SCHEDULE 13G | Chen Yu | 9.8% | 20,000,000 | View |
| May 01, 2026 | SCHEDULE 13G | VIKING GLOBAL INVESTORS LP | 6.7% | 13,400,000 | View |
| May 01, 2026 | SCHEDULE 13G | Viking Global Opportunities Parent GP LLC | 6.7% | 13,400,000 | View |
| May 01, 2026 | SCHEDULE 13G | Viking Global Opportunities GP LLC | 4.7% | 9,380,000 | View |
| May 01, 2026 | SCHEDULE 13G | Viking Global Opportunities Portfolio GP LLC | 4.7% | 9,380,000 | View |
| May 01, 2026 | SCHEDULE 13G | Viking Global Opportunities Illiquid Investments Sub-Master LP | 4.7% | 9,380,000 | View |
| May 01, 2026 | SCHEDULE 13G | Viking Global Opportunities Vintage IV GP LLC | 2.0% | 4,020,000 | View |
| May 01, 2026 | SCHEDULE 13G | Viking Global Opportunities Vintage IV Portfolio GP LLC | 2.0% | 4,020,000 | View |
| May 01, 2026 | SCHEDULE 13G | Viking Global Opportunities Vintage IV (Aggregator) LP | 2.0% | 4,020,000 | View |
| May 01, 2026 | SCHEDULE 13G | HALVORSEN OLE ANDREAS | 6.7% | 13,400,000 | View |
| May 01, 2026 | SCHEDULE 13G | Shabet Rose Sharon | 6.7% | 13,400,000 | View |
| May 01, 2026 | SCHEDULE 13G | RA Capital Management, L.P. | 6.5% | 13,000,000 | View |
| May 01, 2026 | SCHEDULE 13G | Peter Kolchinsky | 6.5% | 13,000,000 | View |
| May 01, 2026 | SCHEDULE 13G | Rajeev Shah | 6.5% | 13,000,000 | View |
| May 01, 2026 | SCHEDULE 13G | RA Capital Healthcare Fund, L.P. | 6.5% | 13,000,000 | View |
| Apr 30, 2026 | SCHEDULE 13G | Deep Track Capital, LP | 9.99% | 19,417,221 | View |
| Apr 30, 2026 | SCHEDULE 13G | Deep Track Biotechnology Master Fund, Ltd. | 8.65% | 16,828,258 | View |
| Apr 30, 2026 | SCHEDULE 13G | David Kroin | 9.99% | 19,417,221 | View |
| Apr 30, 2026 | SCHEDULE 13G | Deep Track Special Opportunities Fund, LP. | 1.33% | 2,588,963 | View |
| Mar 26, 2026 | SCHEDULE 13G/A | The Vanguard Group | 0.0% | 0 | View |
| Jan 30, 2026 | SCHEDULE 13G/A | The Vanguard Group | 9.09% | 9,491,159 | View |
Percent = "% of class represented by amount beneficially owned" for this reporting person in the filed 13D/13G.
Shares = reported beneficial ownership amount for the same row (not portfolio shares from 13F).
Amendments (/A) can repeat the same holder over time, so rows should not be summed.
Extraction is best-effort from filing text and can be missing or noisy; verify exact figures via the SEC link in each row.