ALT Altimmune Inc.
Health Care, filed as ALTIMMUNE INC (COM NEW), Equity As of 2026 Q2 among managers we track Quote on Google Finance, opens in a new tab
Bought by 1 manager in 2026 Q2, sold by 1
In 2026 Q2 Andreas Halvorsen opened a position in Altimmune, while Farallon Capital Management sold out.
Who owns this now
Largest portfolio weights among holders, up to 0.1% (Andreas Halvorsen, Viking Global Investors). Not free-float ownership.
Who owns ALT
Sorted by value, long equity only, as of 2026 Q2. Exits show their last held size.
| History | |||||
|---|---|---|---|---|---|
| Andreas Halvorsen, Viking Global Investors | New 0.06% | 6,700,000 | $20M | History | |
| Farallon Capital Management exited 2026 Q2 Last 2026 Q1 | Exit 0.00% | 27,600 | $85K | History |
Insider trades
Open-market buys and sales by ALT's executives, directors and 10% owners in the last 12 months, from their Form 4s
- $370K bought by 6 insiders
- None no sales outside a trading plan
- None no planned (10b5-1) sales
-
Jerome Benedict Durso CEOBuy$44K 15,000 shares at $2.95 +32% to stakeTraded Aug 13 Filed Aug 13
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John Gill DirectorBuy$31K 9,200 shares at $3.41 +74% to stakeTraded Apr 6 Filed Apr 6
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Jerome Benedict Durso CEOBuy$47K 15,000 shares at $3.14 +46% to stakeTraded Apr 1 Filed Apr 1
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Gregory L Weaver CFOBuy$31K 10,000 shares at $3.15 +36% to stakeTraded Apr 1 Filed Apr 1
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Jerome Benedict Durso CEOBuy$71K 20,000 shares at $3.54 +160% to stakeTraded Mar 6 Filed Mar 9
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Gregory L Weaver CFOBuy$18K 5,000 shares at $3.54 +22% to stakeTraded Mar 6 Filed Mar 9
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Wayne Pisano DirectorBuy$20K 5,000 shares at $4.08 +59% to stakeTraded Jan 8 Filed Jan 9
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Catherine A. Sohn DirectorBuy$2,118 500 shares at $4.24 +50% to stakeTraded Jan 5 Filed Jan 5
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Diane Jorkasky DirectorBuy$2,003 527 shares at $3.80 New stakeTraded Dec 29, 2025 Filed Dec 29, 2025
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John Gill DirectorBuy$51K 12,500 shares at $4.10 New stakeTraded Dec 23, 2025 Filed Dec 23, 2025
-
Jerome Benedict Durso DirectorBuy$52K 12,500 shares at $4.13 New stakeTraded Dec 22, 2025 Filed Dec 22, 2025
Also filed in the last 12 months, not counted as buying or selling: 14 share withholdings for taxes, 14 option exercises, and 5 stock grants.
SEC filings
Recent issuer filings from EDGAR, 21 shown.
| Filed | Form | Detail | Links |
|---|---|---|---|
| 8-K | 2.03 | Filing Doc | |
| 8-K | 5.02,7.01,9.01 | Filing Doc | |
| 8-K | 5.02 | Filing Doc | |
| 8-K | 2.02,9.01 | Filing Doc | |
| 10-Q | Filing Doc | ||
| 8-K | 7.01,8.01,9.01 | Filing Doc | |
| 8-K | 8.01 | Filing Doc | |
| SCHEDULE 13G/A | — | Filing Doc | |
| 8-K | 2.02,9.01 | Filing Doc | |
| 10-Q | Filing Doc | ||
| SCHEDULE 13G | — | Filing Doc | |
| SCHEDULE 13G | — | Filing Doc | |
| SCHEDULE 13G | — | Filing Doc | |
| SCHEDULE 13G | — | Filing Doc | |
| SCHEDULE 13G | — | Filing Doc | |
| 424B5 | Filing Doc | ||
| 8-K | 1.01,9.01 | Filing Doc | |
| 424B5 | Filing Doc | ||
| 8-K | 5.03,5.07,9.01 | Filing Doc | |
| SCHEDULE 13G/A | — | Filing Doc | |
| DEF 14A | Filing Doc |
No filings match this filter.
Financials
US-GAAP annual figures by fiscal year, as tagged in Form 10-K. Each value links to its SEC filing.
Balance sheet
| Metric | FY2023 | FY2024 | FY2025 |
|---|---|---|---|
| Total current assets | $209.63M | $137.25M | $278.19M |
| Total non-current assets * | $1.01M | $2.05M | $1.74M |
| Total assets | $210.64M | $139.31M | $279.93M |
| Total current liabilities | $12.14M | $10.47M | $15M |
| Total non-current liabilities * | $4.4M | $5.33M | $40.04M |
| Total equity | $194.1M | $123.51M | $224.89M |
Ownership over time
13Fs that reported it each quarter. Click a bar for that quarter’s holders.
Further reading
As an Amazon Associate, FollowTheFilings earns from qualifying purchases.
- How to Read a Financial Report (Tracy & Tracy) View on Amazon
- Financial Statements QuickStudy Laminated Guide View on Amazon