Altimmune, Inc.

ALT Healthcare Biotechnology

Altimmune, Inc.’s revenue for fiscal 2025 (year ended December 2025) was $41,000.00, up 105.0% from fiscal 2024.

Revenue
+520.0%
EPS
+55.6%
Free cash flow
−25.3%
Total debt
+142.4%

Quarter to June 2026, against a year earlier

2.10 0.06 +2.94%
Market cap
$396.8M
P/E
0.0×
Fwd P/E
−3.5×
Dividend yield
—
F-score
4/9
Altman Z
0.23
Beneish M
−3.17
Dividend safety
n/a

Insider Decisions last twelve months

Bought, $m 0.37
Trades a month
Jan 26 Apr 26 Jul 26 Oct 26
Buy 3 2 — 2 3 — — — 1 — — —
Sell — — — — — — — — — — — —
Insider Ownership 0.97%

Capital & Financial Ratios $m

Size
Market Cap 396.82
Revenue ttm 0.05
Net income ttm (91.76)
Free cash flow ttm (76.56)
Net debt Q (291.58)
Valuation
P/E 0.00
Forward P/E (3.51) (negative: loss-making)
Price / sales 8,224.03 (above 10: high)
Forward P/S Powerpack
Price / FCF 0.00
Price / book 0.80
Financial health
Current ratio Q 26.78 (at or above 1.5: strong)
Debt / equity Q 0.07 (at or below 0.5: strong)
Interest coverage Q (23.91)
Growth
Revenue growth Q +520.00% (above 0%: growing)
Operating income growth Q −14.43% (below 0%: shrinking)
EPS, this year +41.80% (at or above 15%: strong)
EPS, next year A −9.21% (below 0%: weak)
Revenue, next year A +6,148.78% (at or above 10%: strong)
EPS, past 5 yrs —
EPS, next 5 yrs A +14.25%

Green and red mark values outside typical ranges; (Q) is the latest quarter, (A) analysts’ estimates. How we judge →

Valuation vs history

P/S against its own 10 years 82.27%
10-year low 10-year high
P/B against its own 10 years 32.66%
10-year low 10-year high
EV/Sales against its own 10 years 76.93%
10-year low 10-year high

Dividends

Yield
—
Annual rate
—
Payout ratio
—
Growth, 2017–23
−100.0%/yr
  1. 2.91 ’17
  2. 0.00 ’18 −100
  3. 0.00 ’19
  4. 0.00 ’20
  5. 0.00 ’21
  6. 0.00 ’22
  7. 0.00 ’23
paid change on the year, %

Assets vs Liabilities $m

2023 2024 2025 Q'26
Cash 198 132 273 326
Receivables 5 3 2 3
Inventory — — — —
Other — — — —
210 137 278 335
2023 2024 2025 Q'26
Payables 2 0 3 1
ST’ Debt — — — —
Other — — — —
12 10 15 13

Compound Annual Growth %

10y 5y 3y
Sales (42.64%) (65.33%) 0.00%
Cash Flow 0.00% 0.00% 0.00%
Earnings 0.00% 0.00% 0.00%
Book Value 29.74% (0.09%) 6.67%

Earnings Trends EPS, adjusted, against the consensus

EPS $

Mar Jun Sep Dec Year
’26 (0.18) (0.12) — — —
’25 (0.26) (0.27) (0.21) (0.27) (1.00)
’24 (0.34) (0.35) (0.32) (0.33) (1.34)
’23 (0.40) (0.32) (0.39) (0.54) (1.66)
’22 (0.44) (0.42) (0.48) (0.43) (1.81)
’21 (0.38) (0.60) (0.81) (0.57) (2.35)
’20 (0.26) (0.94) (0.54) (0.17) (1.91)
Fiscal quarters ending in the months shown.

Revenue $m

Mar Jun Sep Dec Year
’26 — — — — —
’25 0 0 0 0 0
’24 0 0 0 0 0
’23 0 0 0 0 0
’22 0 0 0 0 0
’21 1 0 0 3 4
’20 2 1 3 2 8
Fiscal quarters ending in the months shown.

Operating Cash Flow $m

Mar Jun Sep Dec Year
’26 (21) (24) — — —
’25 (17) (19) (12) (19) (68)
’24 (16) (18) (27) (18) (80)
’23 (19) (19) (20) (17) (76)
’22 (14) (17) (15) (17) (63)
’21 (20) (19) (18) (22) (78)
’20 (4) (7) (10) (13) (34)
Fiscal quarters ending in the months shown.

Free Cash Flow $m

Mar Jun Sep Dec Year
’26 (21) (24) — — —
’25 (17) (19) (12) (19) (68)
’24 (16) (18) (27) (18) (80)
’23 (19) (19) (20) (17) (76)
’22 (14) (17) (15) (17) (63)
’21 (24) (27) (18) (22) (91)
’20 (4) (7) (10) (13) (35)
Fiscal quarters ending in the months shown.

Target Price Range

Analyst price targets

Recommendation Rating

1.3
1Buy 2 3Hold 4 5Sell

Ten years at a glance Fiscal years to December

Ten-year view Analyst estimates Powerpack
Group Line 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 TTM Jun ’26 Trend 10 yrs 2026e 2027e 2028e Next 3/yr
Income, $m
Income, $m Revenue 3 11 10 6 8 4 0 0 0 0 0 (38.5%) 3 3 3 +296.8%
Gross margin, % 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 0.0 pt
EBT (11) (52) (45) (21) (54) (97) (85) (88) (95) (89) (92) +26.0%
EBT margin, % (342.59) (484.84) (438.68) (354.72) (665.38) (2,201.59) 124,867.65 (20,762.21) (475,295.00) (216,521.95) 0.00 (216,179.4) pt
Net income (11) (46) (39) (21) (49) (97) (85) (88) (95) (88) (92) +25.9%
Per share, $
Per share, $ Revenue 14.06 24.86 3.69 0.44 0.32 0.11 0.00 0.01 0.00 0.00 0.00 (68.0%)
Earnings (48.17) (120.42) (15.16) (1.60) (1.91) (2.35) (1.81) (1.66) (1.34) (1.00) (0.78) (35.0%)
Cash flow (27.60) (46.80) (3.35) (0.73) (1.34) (1.90) (1.33) (1.42) (1.12) (0.77) (0.41) (32.8%)
Capex (0.96) (0.37) (0.36) 0.00 (0.01) (0.30) 0.00 0.00 0.00 0.00 0.00 (63.9%)
Free cash flow (28.56) (47.17) (3.71) (0.73) (1.35) (2.19) (1.34) (1.42) (1.12) (0.77) (0.41) (33.1%)
Book value 139.91 91.22 17.24 3.47 8.81 4.82 3.95 3.65 1.74 2.55 2.56 (35.9%)
Shares, m 0 0 3 13 26 41 47 53 71 88 122 +93.6%
Valuation, ×
Valuation, × P/E 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.0
P/S 70.43 2.41 0.56 4.28 35.33 85.75 0.00 1,314.92 25,596.73 6,914.26 8,224.03 3,402.5
P/B 7.08 0.66 0.12 0.55 1.28 1.90 3.96 2.89 4.15 1.41 0.80 2.4
EV/Sales 69.62 1.32 (2.69) (1.86) 9.15 42.88 (8,079.20) 851.59 19,023.93 1,717.80 1,889.09 1,363.3
EV/FCF (34.78) (0.70) 2.68 1.12 (2.16) (2.09) (8.73) (4.77) (4.75) (1.17) (1.13) (5.5)
Cash, $m
Cash, $m Operating cash flow (6) (20) (9) (10) (34) (78) (63) (76) (80) (68) (77) +30.0%
Capex 0 0 (1) 0 0 (12) 0 0 — 0 0 (28.3%)
Free cash flow (7) (20) (10) (10) (35) (91) (63) (76) (80) (68) (77) +29.5%
Balance, $m
Balance, $m Working capital (1) 20 35 35 218 186 176 197 127 263 322 n/m
Net debt (3) (12) (34) (36) (214) (189) (184) (198) (132) (239) (292) +63.5%
Shareholders’ equity 32 39 48 46 226 199 185 194 124 225 474 +24.1%
Returns, %
Returns, % ROA (39.32) (101.26) (72.13) (38.55) (32.79) (41.85) (39.79) (42.36) (54.33) (42.03) (25.58) (2.7) pt
ROIC (23.62) (120.07) (185.13) (131.45) (300.78) (610.37) (5,217.65) 0.00 0.00 0.00 (34.30) +23.6 pt
ROE (46.90) (143.46) (96.86) (44.70) (36.14) (45.69) (44.07) (46.63) (59.86) (50.57) (28.87) (3.7) pt
People
People Employees 13 30 27 25 43 47 52 59 59 57 — +17.8%
Revenue/emp, $m 0.25 0.36 0.38 0.23 0.19 0.09 0.00 0.01 0.00 0.00 — (47.8%)
Negative figures in brackets.
estimates

All 10 years →

Fiscal years to Dec 2025 · latest quarter Dec 2025

Altimmune, Inc. vs peers in Biotechnology (Q) = latest quarter vs a year earlier

Company Market cap P/E Fwd P/E Revenue growth (Q) EPS growth (Q) FCF growth (Q) Gross margin (Q) EBIT margin (Q) Compare
RLMD Relmada Therapeutics, Inc. $455.5M — (loss-making) — — n/m −50.06% (below 0%: shrinking) 0.00% 0.00% Compare
ASMB Assembly Biosciences, Inc. $405.6M — (loss-making) — (loss-making) +38.94% (above 0%: growing) n/m +7.58% (above 0%: growing) 100.00% (47.44%) Compare
EDIT Editas Medicine, Inc. $399.3M — (loss-making) — (loss-making) +232.31% (above 0%: growing) n/m +40.72% (above 0%: growing) 100.00% (156.05%) Compare
ALT Altimmune, Inc. $396.8M — (loss-making) — (loss-making) +520.00% (above 0%: growing) n/m −25.27% (below 0%: shrinking) 100.00% 0.00%
CCCC C4 Therapeutics, Inc. $394.9M — (loss-making) — (loss-making) +2.75% (above 0%: growing) n/m +86.84% (above 0%: growing) 100.00% (397.88%) Compare
BLSM BlossomHill Therapeutics, Inc. $394.5M — (loss-making) — — n/m — — 0.00% Compare
AVTX Avalo Therapeutics, Inc. $388.8M — (loss-making) — (loss-making) −70.14% (below 0%: shrinking) n/m +75.70% (above 0%: growing) 55.73% 0.00% Compare
ZURA Zura Bio Limited $384.3M — (loss-making) — — n/m −26.22% (below 0%: shrinking) — 0.00% Compare
AUTL Autolus Therapeutics PLC Sponsored ADR $376.6M — (loss-making) — (loss-making) +118.37% (above 0%: growing) n/m +67.55% (above 0%: growing) 55.20% (95.95%) Compare
Median of peers $394.7M — — +38.94% — +40.72% 77.87% (23.72%)

All 621 Biotechnology stocks →

Pay and ownership Proxy statement filed 17 March 2026

Chief executive’s pay

Year Total pay Actually paid $100 invested
2025 8.03m 1.79m 21.95
2024 6.09m 2.45m 78.71
2023 5.48m 2.11m 122.82

Ownership

Directors and executive officers, together 1.60%
The Vanguard Group 7.30%
Alyeska Master Fund, L.P. 5.50%
Total pay is as the Summary Compensation Table states it; actually paid revalues the year’s share awards at its end, as the SEC’s pay-versus-performance rule asks. $100 invested is what $100 in the company’s shares at the start of the earliest year shown was worth at each year’s end. Ownership is the proxy’s own table: the directors and officers as a group, and every holder of 5% or more. Read the proxy statement

Altimmune, Inc. (ALT) Latest News

4 Jun

13 May

Impact 4 · · The Motley Fool transcript
Impact 4 · · Moby
Impact 3 · · MarketBeat
stockrow.com/ALT · Data as of Dec 31, 2025 · For information only; not investment advice. · © 2026 stockrow.com