Altimmune (ALT.US) Stock Rating 2026/2027: Strong Buy – Stock Analysis

2.20
Price history for Altimmune (ALT.US) – stock price at $2.20, October 2026
Altimmune stock price – price development 2026. Updated Oct 17, 2026.
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No analysts currently cover Altimmune with a public price target. We add the price target automatically as soon as at least one analyst publishes a rating. Until then, use the technical analysis and the key figures below.

Analyst Ratings for Altimmune stock in 2026: Strong Buy

10 analysts cover Altimmune. There is broad agreement on a positive view — 90% recommend buying.

Consensus: Strong Buy (4.60/5)
Strong Buy
7 (70%)
Buy
2 (20%)
Hold
1 (10%)
Strong Sell Sell Hold Buy Strong Buy
4.60 out of 5 based on 10 analysts

About Altimmune – Biotechnology

Altimmune, Inc., a late clinical stage biopharmaceutical company, focuses on developing novel therapies for serious liver diseases. Its lead product candidate is pemvidutide, a GLP-1/glucagon dual receptor agonist, which is in Phase 3 clinical trial for the treatment of metabolic dysfunction-associated steatohepatitis, alcohol use disorder, and alcohol-associated liver disease. The company was founded in 1997 and is headquartered in Gaithersburg, Maryland. Read more about the company

Key Figures for Altimmune

$449M Market cap
$31.0K Revenue
Biotechnology Industry
- P/E
14,494.71 P/S
1.31 P/B
United States Listed on exchange

What kind of stock is Altimmune?

Speculative stock

Altimmune is classified as a speculative stock.

Score Overview for Altimmune

💰 Value Score 21/100 (Low)
⭐ Quality Score 12/100 (Very Low)
🚀 Momentum Score 9/100 (Very Low)
📊 Total Score 14/100

⚠️ 3 red flags identified 2 critical

Our analysis has identified 3 potential risk factors in Altimmune that investors should be aware of.

⚠️ Weak financial health: The Piotroski score is only 2/9 – the company shows signs of weakened profitability, liquidity or capital structure.
🚨 Negative return on equity: ROE is -28.9% – the company is generating a negative return for shareholders.
🚨 High short interest: 23.7% of the shares are sold short – many professional investors are betting on price declines.

📈 Valuation

The P/S ratio is 14,494.7 (high — the market pays a premium for the revenue). The P/B ratio is 1.3. The PEG ratio is 32.62 — above 2.0 suggests the stock is expensive relative to its growth rate.

🏦 Financial Health

The Piotroski score is 2 out of 9 — weak financial health, be careful. Altman Z2 is 7.93 (healthy balance sheet — low risk). The debt-to-equity ratio (D/E) is 12.8% — low debt, a solid balance sheet.

🚀 Momentum & Short Interest

Short interest is 23.72% — very high, the market is skeptical.

Insider Trading in Altimmune 2026: The Signal Is clearly positive

In 2026, insiders at Altimmune have made 20 transactions – split into 17 purchases and 3 sales. On a net basis, insiders took $285,706 out of the stock. Active insiders include Durso Jerome Benedict, GILL JOHN, WEAVER GREGORY L and others. In the short term (last 3 months), the insider signal is clearly positive.

Short-Term Signal (3 months): Clearly positive

Insiders have exclusively bought shares over the last 3 months. This is a strong signal of confidence in the company in the short term.

Over the last 3 months: 1 purchases and 0 sales. A net $44,250 into the stock.

Long-Term Signal (all transactions): Mixed

There are both insider purchases and sales, with no clear direction. This is normal for large companies, where management adjusts positions on an ongoing basis.

Across the last 20 transactions: 17 purchases and 3 sales. A net $285,706 out of the stock.

Latest purchase: Durso Jerome Benedict bought 15,000 shares at $2.95 each on 2026-08-13. The stock has since fallen 25.4%.

Latest sale: Drutz David sold 20,000 shares at $6.88 each on 2024-08-19.

Who is buying: Durso Jerome Benedict, GILL JOHN, WEAVER GREGORY L, Pisano Wayne, Sohn Catherine A. and others.

Who is selling: Drutz David, Pisano Wayne, Garg Vipin K.

Latest Insider Trades in Altimmune (2026)

The table shows the last 20 reported insider transactions in Altimmune. Green rows are purchases, red rows are sales. The data is based on official filings.

Transaction date Name Type Number of shares Price per share ($) Total amount ($)
2026-08-13 Durso Jerome Benedict Buy 15,000 3 44,250
2026-04-06 GILL JOHN Buy 9,200 3 31,372
2026-04-01 WEAVER GREGORY L Buy 10,000 3 31,500
2026-04-01 Durso Jerome Benedict Buy 15,000 3 47,100
2026-03-06 WEAVER GREGORY L Buy 5,000 4 17,700
2026-03-06 Durso Jerome Benedict Buy 20,000 4 70,800
2026-01-08 Pisano Wayne Buy 5,000 4 20,400
2026-01-05 Sohn Catherine A. Buy 500 4 2,120
2025-12-29 Jorkasky Diane Buy 527 4 2,003
2025-12-23 GILL JOHN Buy 12,500 4 51,250

Who is buying and selling Altimmune shares in 2026?

The following insiders have bought shares in Altimmune: Durso Jerome Benedict, GILL JOHN, WEAVER GREGORY L, Pisano Wayne, Sohn Catherine A. and others. In total, $552,494 was bought across 17 transactions. The following insiders have sold shares: Drutz David, Pisano Wayne, Garg Vipin K. In total, $838,200 was sold across 3 transactions. Insider trades are legal transactions in which executives and board members buy or sell shares of their own company. These transactions are reported to the SEC and are publicly available.

Altimmune Short Selling 2026: 23.7% Sold Short

Extremely shorted: 23.7% of the free float
Short % of free float
23.7%
Assessment
Extremely shorted
Short squeeze risk
Very High
Data source
EODHD
Reported about twice a month

Short interest over time: Altimmune

0.0%15.4%30.8%
Peak 26.7% · 8/13
7/279/510/16
23.7% today (extremely high)Peaked at 26.7% on Aug 13, 2026Last 30 days: −1.9 percentage pointsMeasured over 81 days
What does the trend tell you?
Short interest is falling. It is down 1.9 percentage points over the last month and now stands at 23.7%. This is how shorting works: whoever shorts has borrowed the share and sold it, and to close the position again they must buy the share back. Falling short interest therefore means shares are being bought back in Altimmune right now.

Many investors watch for exactly this: short interest that has been high and starts falling back. The professionals who bet on a falling price are closing down. That is not in itself a signal about what the price will do — we cannot predict the market, and short interest is only one number among many. But it does say something about what the large players are doing.
The stock has an extremely high share of short selling. More than 20% of the freely traded shares are sold short, which is unusual and can point to great skepticism among institutional investors. The risk of a short squeeze on positive news is considerable.

What does this mean for you as an investor?
A short interest of 23.7% means that 23.7% of the freely traded shares in Altimmune have been borrowed and sold by investors betting on falling prices. On positive surprises (e.g. a strong earnings report), short sellers can be forced to buy back shares quickly to close their positions, which can cause a short squeeze with sharp price gains in a short time.

The next potential catalyst is the earnings report on Nov 5, 2026. With a short interest of 23.7%, the report can trigger considerable volatility.

Short interest comes from our data provider EODHD. The figure is reported about twice a month; we check it every trading day.
Short Interest Scale
0% 2% 5% 10% 20%+
Low Moderate High Very High Extreme
▲
23.7%

When Does Altimmune Report Earnings – Next Date: Nov 5, 2026

The next earnings report from Altimmune is scheduled for November 5, 2026, before the market opens. This report covers the third quarter (Q3), which ended on September 30, 2026.



Technical Analysis of Altimmune 2026 – Signal: Strong Sell

Overall Technical Signal: Strong Sell

Based on trend analysis (SMA50/SMA200) and MACD trend (positive/negative on a daily + weekly basis). Updated October 17, 2026.

Technical analysis of Altimmune (ALT.US) – RSI 20, MACD negative (bearish), daily candlestick chart October 2026
Altimmune technical analysis – candlestick chart with RSI, MACD and volume profile. Updated Oct 17, 2026.

Trend Analysis of Altimmune, Inc

Altimmune, Inc is in a short-term downtrend. The price of $2.20 is 20.5% below the 20-day average ($2.77). Medium term, the picture is negative: the price is 26.6% below the 50-day average ($3.00). Long term, the stock is 34.8% below the 200-day average ($3.37), which signals a long-term downtrend.

Death Cross: The 50-day average (3.00) is below the 200-day average (3.37), which is a classic bearish signal for Altimmune, Inc.

Is Altimmune, Inc overbought or oversold?

Altimmune, Inc has an RSI of 20.1, which places the stock in oversold territory (below 30). WARNING: Oversold in a downtrend is NOT a buy signal. When the trend is negative, RSI can stay oversold for a long time while the price keeps falling. Wait for a trend reversal before buying.

MACD Analysis for Altimmune, Inc

Daily MACD: MACD is negative (-0.214), which means the short-term trend is bearish (the 12-day EMA is below the 26-day EMA). MACD is below the signal line (-0.159) by 0.055, which confirms growing negative momentum in the downtrend.

Weekly MACD: MACD5 is negative (-0.196), which indicates a broader bearish long-term trend. MACD5 is below the signal line (-0.185) by 0.011, which confirms continued negative long-term momentum.

Overall MACD assessment: Both the daily and weekly MACD are negative and below their signal lines. Trend and momentum are negative across time horizons – the strongest bearish signal.

Risk Profile for Altimmune, Inc

Altimmune, Inc has an annual standard deviation of 69.0%, which classifies the stock as Speculative. Sizeable price swings are normal, and the stock requires a higher risk tolerance.

Overall Technical Conclusion for Altimmune, Inc

Trend: Negative. The price trades below SMA50 and SMA200.

MACD trend (zero line): Daily bearish (-0.214). Weekly bearish (-0.196).

MACD momentum (signal): Daily falling. Weekly falling.

RSI: 20.1 – oversold.

Technical signal: Strong Sell

The price is in a downtrend (below SMA50/SMA200) and MACD is negative on both a daily and weekly basis. Avoid buying and consider closing existing positions.

Frequently Asked Questions About Altimmune stock in 2026

Should you buy Altimmune stock now?
No, the technical signal for Altimmune is currently Strong Sell. Altimmune trades at $2.20 as of Oct 17, 2026. The technical analysis shows the following: MACD is negative (bearish trend) at -0.214 with falling momentum (signal: -0.159); RSI is at 20.1 (oversold), which could point to a potential buying opportunity; the stock is in a short-term downtrend (price below the 20-day average). The stock is in a broader downtrend (below SMA50/SMA200). Buying in a downtrend is generally not recommended. This is a technical observation based on current data, not investment advice.
What is the price target for Altimmune stock?
There is currently no active analyst price target for Altimmune.
Is Altimmune a dividend stock?
No, Altimmune does not currently pay a dividend to shareholders. The company reinvests its profits in growth instead of paying dividends.
What is the risk of Altimmune stock?
Altimmune is rated as a stock in the risk category Speculative. the annual standard deviation is 69.0%, which classifies the stock as Speculative. In addition, an RSI of 20.1 signals oversold (potential bottom).
Is Altimmune overvalued?
Altimmune has the following valuation ratios: a P/S ratio of 14,494.7, a P/B ratio of 1.3.
Is Altimmune overbought?
No, Altimmune is actually oversold with an RSI of 20.1 (below 30). The technical indicators show: RSI is at 20.1 (below the 30 mark), which actually signals the price is oversold – the opposite of overbought. In addition, the price is 20.5% below the 20-day average (short-term downtrend). In addition, MACD is negative with falling momentum (bearish). IMPORTANT: The stock is oversold in a downtrend. A low RSI in a downtrend is NOT a buy signal – the price can keep falling. Wait for a trend reversal before buying.
When is the next Altimmune earnings report?
Altimmune reports its next earnings on November 5, 2026. The stock currently trades at $2.20. The RSI is at 20.1, so the report can reinforce the current technical trend.
Is Altimmune shorted?
Yes, Altimmune is shorted with 23.7% of the free float sold short. This is an extremely high level of short selling, which points to great skepticism among institutional investors. The risk of a short squeeze on positive news or earnings is very high. The figure comes from our data provider EODHD, is reported about twice a month, and we check it every trading day.
Are insiders buying Altimmune stock?
Yes, insiders are net buyers of Altimmune – they are buying more shares than they are selling. Over the last 3 months, insiders have made 1 purchases and 0 sales. On a net basis, 44,250 $ worth of shares were bought. Across the last 20 reported transactions, the split is 17 purchases and 3 sales, with a net 285,706 $ sold. Active buyers include Durso Jerome Benedict, GILL JOHN, WEAVER GREGORY L and others. Insider buying is generally seen as a positive signal, because management is putting its own money into the company.
Is Altimmune a good stock?
Based on our total score, Altimmune is rated as a disastrous stock with a total score of 14 out of 100. The stock scores very low on value, quality and momentum – it is among the worst in our database. The score is made up of Value: 21/100, Quality: 12/100, Momentum: 9/100. Whether now is the time to buy is a separate question: the technical signal is Strong Sell. Whether Altimmune is a good investment depends on your time horizon, risk profile and portfolio. This is a data-driven observation, not investment advice.
What is the outlook for Altimmune stock?
The outlook for Altimmune based on current data: the stock is in a downtrend (below SMA50 and SMA200); the next earnings report is due on Nov 5, 2026, which can move the price. Keep in mind that stock prices are affected by many factors, including earnings reports, the economy and market sentiment. Past returns are no guarantee of future returns.
Why is Altimmune stock falling?
Altimmune is falling right now. The technical indicators show: the price is 20.5% below the 20-day average; MACD is negative with falling momentum (bearish signal); short interest is 23.7% (high – many are betting on a decline); insiders have mostly been buying the stock recently. For the latest context, see our technical analysis and insider section above.
How high can Altimmune go?
There is currently no active analyst price target for Altimmune. The stock has traded between $2.29 and $6.44 over the last 52 weeks. The price is 65.8% below the 52-week high, which can indicate potential if the underlying fundamentals are intact. Keep in mind that price targets are estimates, not guarantees. Actual price moves depend on earnings, market conditions and unexpected events.
How low can Altimmune fall?
The stock has traded as low as $2.29 over the last 52 weeks — that is 4.1% below the current price of $2.20. The biggest decline (drawdown) in the same period was 64.4% from high to low. Within a year, the price typically swings about ±69.0% (standard deviation — a measure of price swings). A difficult year could therefore mean a further decline of that size. Remember: past price swings are no guarantee for the future — a stock can fall further than the last 52 weeks suggest, especially on profit warnings, sector crises or a market crash. Use stop-loss orders and spread your portfolio to limit losses in single stocks.
What does Altimmune do?
Altimmune, Inc., a late clinical stage biopharmaceutical company, focuses on developing novel therapies for serious liver diseases. Its lead product candidate is pemvidutide, a GLP-1/glucagon dual receptor agonist, which is in Phase 3 clinical trial for the treatment of metabo... The company belongs to the Healthcare sector, more specifically the Biotechnology industry, is headquartered in United States, and is traded on the USA Stocks. See the key figures, earnings history and price development above to evaluate Altimmune as an investment.
Did Altimmune raise or lower its guidance?
Over the last 60 days we have not registered a guidance raise or cut from Altimmune. The company can still adjust its guidance at quarterly reports or between reports — see the earnings history above.
Is Altimmune making money or losing money?
We have no current profitability data for Altimmune. See the latest report in the earnings history above.
Can Altimmune go bankrupt?
The bankruptcy risk of Altimmune is rated as low. Altman Z2 (a model for assessing financial distress) is 7.93 — that places the company in the healthy zone. The company has a healthy balance sheet with limited debt relative to earnings and assets. The Piotroski score (financial health 0-9, higher is better) is 2 — which is weak. Debt relative to equity is 13% (low). Remember: models like Altman Z2 are statistical — unexpected shocks (fraud, a sector collapse, lawsuits) can always happen. Spread your portfolio.
Does Altimmune have a lot of debt?
No, Altimmune has low debt relative to equity. The debt-to-equity ratio (D/E — interest-bearing debt to equity) is 13%. For the healthcare sector, anything below 80% counts as low debt. In healthcare, 80-150% is typical — large pharma companies carry debt for research and acquisitions. Note: D/E levels are highly sector-specific — a bank at 300% debt is normal, a tech stock at 300% is extremely leveraged. Always compare with similar companies in the same sector.

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