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ALTIMMUNE (ALT)
NASDAQ
$3.11-$0.005 (-0.16%)
Price as of Aug 21, 2026 7:52 PM EDT- $605.0MMarket Cap
- -12.15%1-Year Change
- BiotechnologyIndustry
ALTIMMUNE (ALT)
$3.11-$0.005 (-0.16%)
Top Holders
Institutional
Mutual Funds
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
BLACKROCK, INC. | 10.48% | 20.4M | +7.6M (+37.23%) | Jun 30, 2026 |
DEEP TRACK CAPITAL, LP | 9.90% | 19.3M | +19.3M (+100.00%) | Jun 30, 2026 |
STATE STREET CORP | 6.22% | 12.1M | +5.0M (+40.94%) | Jun 30, 2026 |
TCG CROSSOVER MANAGEMENT, LLC | 5.14% | 10.0M | +10.0M (+100.00%) | Jun 30, 2026 |
VANGUARD GROUP INC | 4.88% | 9.5M | +3.1M (+32.85%) | Dec 31, 2025 |
VANGUARD CAPITAL MANAGEMENT LLC | 4.21% | 8.2M | +2.5M (+30.81%) | Jun 30, 2026 |
VANGUARD PORTFOLIO MANAGEMENT LLC | 3.77% | 7.3M | +1.9M (+26.58%) | Jun 30, 2026 |
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
iSHARES TRUST | 2.92% | 5.7M | 0 (0.00%) | May 31, 2026 |
VANGUARD INDEX FUNDS | 2.84% | 5.5M | +1.1M (+19.92%) | Mar 31, 2026 |
SPDR SERIES TRUST | 2.24% | 4.4M | 0 (0.00%) | Apr 30, 2026 |
VANGUARD HORIZON FUNDS | 1.27% | 2.5M | +262,721 (+10.67%) | Mar 31, 2026 |
TIAA-CREF FUNDS | 1.10% | 2.1M | +506,301 (+23.62%) | Apr 30, 2026 |
JANUS INVESTMENT FUND | 0.89% | 1.7M | 0 (0.00%) | Mar 31, 2026 |
FIDELITY CONCORD STREET TRUST | 0.88% | 1.7M | +744,312 (+43.50%) | May 31, 2026 |
Current Ownership Distribution
- Institutions924.7M (73.96%)
- Mutual Funds288.2M (23.05%)
- Insiders37.5M (3.00%)
- Other0 (0.00%)
Insider Transactions
- 3.00% (37.5M)Current InsiderOwnership (%, shares)
- 5Number of InsiderBuying (last 12 months)
- $349,472.85Amount of InsiderBuying (last 12 months)
- 0Number of InsiderSelling (last 12 months)
- $0.00Amount of InsiderSelling (last 12 months)
Insider Name & Title | Type | Date
| Transaction Value | Shares | Share Price | Shares After Transactions |
|---|---|---|---|---|---|---|
Roberts M Scot Chief Scientific Officer | Award | Jul 31, 2026 | $2,112.25 | 875 | $2.41 | 113,699 |
WEAVER GREGORY L Chief Financial Officer | Award | Jul 31, 2026 | $4,231.74 | 1,753 | $2.41 | 39,831 |
GILL JOHN | Buy | Apr 06, 2026 | $31,349.92 | 9,200 | $3.41 | 21,700 |
Durso Jerome Benedict President and CEO | Buy | Apr 01, 2026 | $47,100.00 | 15,000 | $3.14 | 47,500 |
WEAVER GREGORY L Chief Financial Officer | Buy | Apr 01, 2026 | $31,499.00 | 10,000 | $3.15 | 38,078 |
WEAVER GREGORY L Chief Financial Officer | Buy | Mar 06, 2026 | $17,700.00 | 5,000 | $3.54 | 28,078 |
Roberts M Scot Chief Scientific Officer | Award | Feb 26, 2026 | $0.00 | 222,670 | $0.00 | 222,670 |
Roberts M Scot Chief Scientific Officer | Award | Feb 26, 2026 | $0.00 | 95,430 | $0.00 | 95,430 |
Roberts M Scot Chief Scientific Officer | Exempt | Feb 02, 2026 | $0.00 | 7,775 | $0.00 | 0 |
Roberts M Scot Chief Scientific Officer | Exempt | Feb 02, 2026 | $0.00 | 7,775 | $0.00 | 115,153 |
Roberts M Scot Chief Scientific Officer | In Kind | Feb 02, 2026 | $12,925.95 | 2,329 | $5.55 | 112,824 |
Jordt Raymond M Chief Business Officer | Award | Jan 31, 2026 | $14,032.97 | 4,571 | $3.07 | 70,107 |
Roberts M Scot Chief Scientific Officer | Award | Jan 31, 2026 | $17,090.69 | 5,567 | $3.07 | 107,378 |
Garg Vipin K | Award | Jan 31, 2026 | $21,262.82 | 6,926 | $3.07 | 424,519 |
Roberts M Scot Chief Scientific Officer | Exempt | Jan 30, 2026 | $0.00 | 9,275 | $0.00 | 9,275 |
Garg Vipin K | Exempt | Jan 30, 2026 | $0.00 | 26,775 | $0.00 | 26,775 |
Roberts M Scot Chief Scientific Officer | Exempt | Jan 30, 2026 | $0.00 | 9,275 | $0.00 | 104,670 |
Garg Vipin K | Exempt | Jan 30, 2026 | $0.00 | 26,775 | $0.00 | 429,225 |
Roberts M Scot Chief Scientific Officer | In Kind | Jan 30, 2026 | $16,010.40 | 2,859 | $5.60 | 101,811 |
Garg Vipin K | In Kind | Jan 30, 2026 | $65,139.20 | 11,632 | $5.60 | 417,593 |
Garg Vipin K | Exempt | Jan 27, 2026 | $0.00 | 41,200 | $0.00 | 123,600 |
Roberts M Scot Chief Scientific Officer | Exempt | Jan 27, 2026 | $0.00 | 15,850 | $0.00 | 47,550 |
Garg Vipin K | Exempt | Jan 27, 2026 | $0.00 | 41,200 | $0.00 | 420,348 |
Roberts M Scot Chief Scientific Officer | Exempt | Jan 27, 2026 | $0.00 | 15,850 | $0.00 | 100,143 |
Garg Vipin K | In Kind | Jan 27, 2026 | $110,609.64 | 17,898 | $6.18 | 402,450 |
Roberts M Scot Chief Scientific Officer | In Kind | Jan 27, 2026 | $29,342.64 | 4,748 | $6.18 | 95,395 |
Garg Vipin K | Exempt | Jan 25, 2026 | $0.00 | 42,050 | $0.00 | 84,100 |
Jordt Raymond M Chief Business Officer | Exempt | Jan 25, 2026 | $0.00 | 14,600 | $0.00 | 29,200 |
Garg Vipin K | Exempt | Jan 25, 2026 | $0.00 | 42,050 | $0.00 | 397,132 |
Jordt Raymond M Chief Business Officer | Exempt | Jan 25, 2026 | $0.00 | 14,600 | $0.00 | 57,770 |