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Side-by-side financial comparison of Spero Therapeutics, Inc. (SPRO) and Sunlands Technology Group (STG). Click either name above to swap in a different company.

Spero Therapeutics, Inc. is the larger business by last-quarter revenue ($12.6M vs $10.1M, roughly 1.2× Sunlands Technology Group). Spero Therapeutics, Inc. runs the higher net margin — 250.7% vs 24.0%, a 226.7% gap on every dollar of revenue. Over the past eight quarters, Spero Therapeutics, Inc.'s revenue compounded faster (847.7% CAGR vs 0.6%).

STG Partners, LLC (STG) is an American private equity firm and based in Menlo Park, California. Its predecessor, Symphony Technology Group ("Symphony") was founded in 2002 by Romesh Wadhwani, William Chisholm, and Bryan Taylor. In 2017, Symphony was reorganized as STG Partners. As of March 2025, STG Partners managed approximately $12 billion in 19 pooled investment vehicle for its clients. The firm itself has less than one billion dollars in assets.

SPRO vs STG — Head-to-Head

Bigger by revenue
SPRO
SPRO
1.2× larger
SPRO
$12.6M
$10.1M
STG
Higher net margin
SPRO
SPRO
226.7% more per $
SPRO
250.7%
24.0%
STG
Faster 2-yr revenue CAGR
SPRO
SPRO
Annualised
SPRO
847.7%
0.6%
STG

Income Statement — Q4 FY2025 vs Q3 FY2025

Metric
SPRO
SPRO
STG
STG
Revenue
$12.6M
$10.1M
Net Profit
$31.5M
$2.4M
Gross Margin
88.5%
Operating Margin
26.5%
Net Margin
250.7%
24.0%
Revenue YoY
24080.8%
Net Profit YoY
250.9%
EPS (diluted)
$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
SPRO
SPRO
STG
STG
Q4 25
$12.6M
Q3 25
$0
$10.1M
Q2 25
$0
$9.3M
Q1 25
$12.0K
Q4 24
$52.0K
$9.7M
Q3 24
$65.0K
Q2 24
$114.0K
$10.0M
Q1 24
$140.0K
Net Profit
SPRO
SPRO
STG
STG
Q4 25
$31.5M
Q3 25
$-7.4M
$2.4M
Q2 25
$-1.7M
$1.4M
Q1 25
$-13.9M
Q4 24
$1.8M
Q3 24
$-17.1M
Q2 24
$-17.9M
$2.2M
Q1 24
$-12.7M
Gross Margin
SPRO
SPRO
STG
STG
Q4 25
Q3 25
88.5%
Q2 25
85.2%
Q1 25
Q4 24
83.3%
Q3 24
Q2 24
85.2%
Q1 24
Operating Margin
SPRO
SPRO
STG
STG
Q4 25
Q3 25
26.5%
Q2 25
15.2%
Q1 25
-122758.3%
Q4 24
13.4%
Q3 24
-28604.6%
Q2 24
-16720.2%
Q1 24
-9987.1%
Net Margin
SPRO
SPRO
STG
STG
Q4 25
250.7%
Q3 25
24.0%
Q2 25
15.4%
Q1 25
-115550.0%
Q4 24
18.2%
Q3 24
-26380.0%
Q2 24
-15668.4%
21.5%
Q1 24
-9049.3%
EPS (diluted)
SPRO
SPRO
STG
STG
Q4 25
$0.56
Q3 25
$-0.13
Q2 25
$-0.03
Q1 25
$-0.25
Q4 24
Q3 24
$-0.32
Q2 24
$-0.33
$0.31
Q1 24
$-0.24

Balance Sheet & Financial Strength

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

Metric
SPRO
SPRO
STG
STG
Cash + ST InvestmentsLiquidity on hand
$40.3M
$15.1M
Total DebtLower is stronger
Stockholders' EquityBook value
$59.0M
$17.7M
Total Assets
$68.9M
$41.2M
Debt / EquityLower = less leverage

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
SPRO
SPRO
STG
STG
Q4 25
$40.3M
Q3 25
$48.6M
$15.1M
Q2 25
$31.2M
Q1 25
$48.9M
Q4 24
$52.9M
$15.6M
Q3 24
$76.3M
Q2 24
$63.5M
$18.7M
Q1 24
$82.3M
Total Debt
SPRO
SPRO
STG
STG
Q4 25
Q3 25
Q2 25
Q1 25
Q4 24
$1.5M
Q3 24
Q2 24
$1.8M
Q1 24
Stockholders' Equity
SPRO
SPRO
STG
STG
Q4 25
$59.0M
Q3 25
$26.5M
$17.7M
Q2 25
$32.8M
$12.6M
Q1 25
$33.8M
Q4 24
$46.1M
$10.7M
Q3 24
$65.5M
Q2 24
$80.5M
$7.6M
Q1 24
$96.2M
Total Assets
SPRO
SPRO
STG
STG
Q4 25
$68.9M
Q3 25
$54.2M
$41.2M
Q2 25
$62.1M
$40.3M
Q1 25
$77.7M
Q4 24
$110.5M
$42.4M
Q3 24
$135.2M
Q2 24
$149.9M
$41.3M
Q1 24
$167.7M
Debt / Equity
SPRO
SPRO
STG
STG
Q4 25
Q3 25
Q2 25
Q1 25
Q4 24
0.14×
Q3 24
Q2 24
0.24×
Q1 24

Cash Flow & Capital Efficiency

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

Metric
SPRO
SPRO
STG
STG
Operating Cash FlowLast quarter
$-8.4M
Free Cash FlowOCF − Capex
FCF MarginFCF / Revenue
Capex IntensityCapex / Revenue
Cash ConversionOCF / Net Profit
-0.26×
TTM Free Cash FlowTrailing 4 quarters

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
SPRO
SPRO
STG
STG
Q4 25
$-8.4M
Q3 25
$17.4M
Q2 25
$-17.7M
Q1 25
$-4.0M
Q4 24
$-23.4M
Q3 24
$12.8M
Q2 24
$-18.7M
Q1 24
$5.9M
Cash Conversion
SPRO
SPRO
STG
STG
Q4 25
-0.26×
Q3 25
Q2 25
Q1 25
Q4 24
Q3 24
Q2 24
Q1 24

Financial Flow Comparison

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

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