2m 2m 2m 2m 2m 2m 2m
ALTIMMUNE (ALT)
NASDAQ
$2.94+$0.005 (+0.17%)
Price as of Jun 23, 2026 5:43 PM EDT- $569.8MMarket Cap
- -58.08%1-Year Change
- BiotechnologyIndustry
ALTIMMUNE (ALT)
$2.94+$0.005 (+0.17%)
Top Holders
Institutional
Mutual Funds
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
BLACKROCK, INC. | 14.50% | 12.8M | +3.1M (+24.16%) | Mar 31, 2026 |
VANGUARD GROUP INC | 10.75% | 9.5M | +3.1M (+32.85%) | Dec 31, 2025 |
STATE STREET CORP | 8.10% | 7.1M | +2.0M (+28.35%) | Mar 31, 2026 |
BLACKROCK FUNDING, INC. /DE | 6.98% | 6.2M | +693,211 (+11.25%) | Dec 31, 2024 |
N/A | 6.41% | 5.7M | +5.7M (+100.00%) | Mar 31, 2026 |
BLACKROCK INC. | 6.03% | 5.3M | +1.3M (+24.03%) | Jun 30, 2024 |
MARSHALL WACE, LLP | 4.55% | 4.0M | +3.1M (+77.03%) | Mar 31, 2026 |
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
iSHARES TRUST | 6.44% | 5.7M | +1.5M (+26.27%) | Mar 31, 2026 |
VANGUARD INDEX FUNDS | 6.26% | 5.5M | +1.1M (+19.92%) | Mar 31, 2026 |
SPDR SERIES TRUST | 4.93% | 4.4M | +1.1M (+25.48%) | Mar 31, 2026 |
VANGUARD HORIZON FUNDS | 2.79% | 2.5M | +262,721 (+10.67%) | Mar 31, 2026 |
JANUS INVESTMENT FUND | 1.95% | 1.7M | 0 (0.00%) | Mar 31, 2026 |
TIAA-CREF FUNDS | 1.85% | 1.6M | +1.4M (+87.87%) | Jan 31, 2026 |
SMALLCAP WORLD FUND INC | 1.59% | 1.4M | 0 (0.00%) | Mar 31, 2026 |
Current Ownership Distribution
- Institutions766.1M (72.24%)
- Mutual Funds256.9M (24.23%)
- Insiders37.4M (3.53%)
- Other0 (0.00%)
Insider Transactions
- 3.53% (37.4M)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 |
|---|---|---|---|---|---|---|
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 |
Garg Vipin K | In Kind | Jan 25, 2026 | $98,912.00 | 17,984 | $5.50 | 379,148 |
Jordt Raymond M Chief Business Officer | In Kind | Jan 25, 2026 | $21,202.50 | 3,855 | $5.50 | 53,915 |