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Side-by-side financial comparison of Bridger Aerospace Group Holdings, Inc. (BAER) and Spero Therapeutics, Inc. (SPRO). Click either name above to swap in a different company.

Spero Therapeutics, Inc. is the larger business by last-quarter revenue ($12.6M vs $8.5M, roughly 1.5× Bridger Aerospace Group Holdings, Inc.). Spero Therapeutics, Inc. runs the higher net margin — 250.7% vs -177.2%, a 427.9% gap on every dollar of revenue. On growth, Spero Therapeutics, Inc. posted the faster year-over-year revenue change (24080.8% vs -45.2%). Over the past eight quarters, Spero Therapeutics, Inc.'s revenue compounded faster (847.7% CAGR vs 24.6%).

Bridger Aerospace is an American aerospace company which provides aerial firefighting and wildfire management services. The company has supported firefighting efforts in 24 U.S. states and two Canadian provinces.

BAER vs SPRO — Head-to-Head

Bigger by revenue
SPRO
SPRO
1.5× larger
SPRO
$12.6M
$8.5M
BAER
Growing faster (revenue YoY)
SPRO
SPRO
+24125.9% gap
SPRO
24080.8%
-45.2%
BAER
Higher net margin
SPRO
SPRO
427.9% more per $
SPRO
250.7%
-177.2%
BAER
Faster 2-yr revenue CAGR
SPRO
SPRO
Annualised
SPRO
847.7%
24.6%
BAER

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
BAER
BAER
SPRO
SPRO
Revenue
$8.5M
$12.6M
Net Profit
$-15.1M
$31.5M
Gross Margin
-65.1%
Operating Margin
-175.0%
Net Margin
-177.2%
250.7%
Revenue YoY
-45.2%
24080.8%
Net Profit YoY
-17.9%
250.9%
EPS (diluted)
$-0.26
$0.56

Green = leading value per metric. Periods may differ when fiscal calendars don't align.

8-Quarter Revenue & Profit Trend

Side-by-side quarterly history. Quarters aligned by calendar period so offset fiscal years line up.

Revenue
BAER
BAER
SPRO
SPRO
Q4 25
$8.5M
$12.6M
Q3 25
$67.9M
$0
Q2 25
$30.8M
$0
Q1 25
$15.6M
$12.0K
Q4 24
$15.6M
$52.0K
Q3 24
$64.5M
$65.0K
Q2 24
$13.0M
$114.0K
Q1 24
$5.5M
$140.0K
Net Profit
BAER
BAER
SPRO
SPRO
Q4 25
$-15.1M
$31.5M
Q3 25
$34.5M
$-7.4M
Q2 25
$308.0K
$-1.7M
Q1 25
$-15.5M
$-13.9M
Q4 24
$-12.8M
Q3 24
$27.3M
$-17.1M
Q2 24
$-10.0M
$-17.9M
Q1 24
$-20.1M
$-12.7M
Gross Margin
BAER
BAER
SPRO
SPRO
Q4 25
-65.1%
Q3 25
68.9%
Q2 25
39.2%
Q1 25
-10.0%
Q4 24
1.2%
Q3 24
64.3%
Q2 24
24.2%
Q1 24
Operating Margin
BAER
BAER
SPRO
SPRO
Q4 25
-175.0%
Q3 25
57.5%
Q2 25
18.0%
Q1 25
-64.9%
-122758.3%
Q4 24
-48.0%
Q3 24
50.9%
-28604.6%
Q2 24
-36.5%
-16720.2%
Q1 24
-278.0%
-9987.1%
Net Margin
BAER
BAER
SPRO
SPRO
Q4 25
-177.2%
250.7%
Q3 25
50.8%
Q2 25
1.0%
Q1 25
-99.3%
-115550.0%
Q4 24
-82.4%
Q3 24
42.4%
-26380.0%
Q2 24
-76.7%
-15668.4%
Q1 24
-364.8%
-9049.3%
EPS (diluted)
BAER
BAER
SPRO
SPRO
Q4 25
$-0.26
$0.56
Q3 25
$0.37
$-0.13
Q2 25
$-0.12
$-0.03
Q1 25
$-0.41
$-0.25
Q4 24
$-0.24
Q3 24
$0.31
$-0.32
Q2 24
$-0.33
$-0.33
Q1 24
$-0.55
$-0.24

Balance Sheet & Financial Strength

Snapshot of each company's liquidity, leverage and book value from the latest quarter.

Metric
BAER
BAER
SPRO
SPRO
Cash + ST InvestmentsLiquidity on hand
$31.4M
$40.3M
Total DebtLower is stronger
$222.5M
Stockholders' EquityBook value
$-342.6M
$59.0M
Total Assets
$330.3M
$68.9M
Debt / EquityLower = less leverage

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
BAER
BAER
SPRO
SPRO
Q4 25
$31.4M
$40.3M
Q3 25
$55.1M
$48.6M
Q2 25
$17.0M
$31.2M
Q1 25
$22.3M
$48.9M
Q4 24
$39.3M
$52.9M
Q3 24
$33.3M
$76.3M
Q2 24
$8.5M
$63.5M
Q1 24
$6.8M
$82.3M
Total Debt
BAER
BAER
SPRO
SPRO
Q4 25
$222.5M
Q3 25
Q2 25
Q1 25
Q4 24
$208.4M
Q3 24
Q2 24
Q1 24
Stockholders' Equity
BAER
BAER
SPRO
SPRO
Q4 25
$-342.6M
$59.0M
Q3 25
$-322.4M
$26.5M
Q2 25
$-351.0M
$32.8M
Q1 25
$-347.4M
$33.8M
Q4 24
$-326.7M
$46.1M
Q3 24
$-304.4M
$65.5M
Q2 24
$-328.0M
$80.5M
Q1 24
$-348.7M
$96.2M
Total Assets
BAER
BAER
SPRO
SPRO
Q4 25
$330.3M
$68.9M
Q3 25
$311.0M
$54.2M
Q2 25
$279.0M
$62.1M
Q1 25
$275.6M
$77.7M
Q4 24
$290.8M
$110.5M
Q3 24
$307.3M
$135.2M
Q2 24
$281.7M
$149.9M
Q1 24
$252.4M
$167.7M

Cash Flow & Capital Efficiency

How much cash each business actually produces after reinvestment. Cash flow is harder to manipulate than net income.

Metric
BAER
BAER
SPRO
SPRO
Operating Cash FlowLast quarter
$-8.0M
$-8.4M
Free Cash FlowOCF − Capex
$-78.4M
FCF MarginFCF / Revenue
-917.3%
Capex IntensityCapex / Revenue
823.4%
Cash ConversionOCF / Net Profit
-0.26×
TTM Free Cash FlowTrailing 4 quarters
$-64.2M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
BAER
BAER
SPRO
SPRO
Q4 25
$-8.0M
$-8.4M
Q3 25
$41.0M
$17.4M
Q2 25
$1.4M
$-17.7M
Q1 25
$-17.7M
$-4.0M
Q4 24
$54.5M
$-23.4M
Q3 24
$200.0K
$12.8M
Q2 24
$-22.6M
$-18.7M
Q1 24
$-22.8M
$5.9M
Free Cash Flow
BAER
BAER
SPRO
SPRO
Q4 25
$-78.4M
Q3 25
$34.6M
Q2 25
$515.0K
Q1 25
$-21.0M
Q4 24
$53.5M
Q3 24
$-951.0K
Q2 24
$-23.6M
Q1 24
$-23.7M
FCF Margin
BAER
BAER
SPRO
SPRO
Q4 25
-917.3%
Q3 25
51.0%
Q2 25
1.7%
Q1 25
-134.0%
Q4 24
343.5%
Q3 24
-1.5%
Q2 24
-181.3%
Q1 24
-430.7%
Capex Intensity
BAER
BAER
SPRO
SPRO
Q4 25
823.4%
Q3 25
9.3%
Q2 25
3.0%
Q1 25
21.2%
Q4 24
6.3%
Q3 24
1.8%
Q2 24
7.6%
Q1 24
17.4%
Cash Conversion
BAER
BAER
SPRO
SPRO
Q4 25
-0.26×
Q3 25
1.19×
Q2 25
4.68×
Q1 25
Q4 24
Q3 24
0.01×
Q2 24
Q1 24

Financial Flow Comparison

Revenue → gross profit → operating profit → net profit for each company.

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