ROARABLE // PRO
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SPRO vs GOSS // FORWARD P/E MULTIPLE

Spero Therapeutics Inc. (NASDAQ) VS. Gossamer Bio Inc. (NASDAQ) • 15-METRIC TALLY: SPRO 5 — GOSS 2
■ METRIC PARITY
15-METRIC INSTITUTIONAL SIDE-BY-SIDE SCORECARD (SPRO VS. GOSS) EMERALD CELL = QUANTITATIVE EDGE
INSTITUTIONAL METRIC SPRO GOSS SPREAD (A - B) ADVANTAGE DEDICATED URL
Gross Profit Margin — — — TIE /gross-margins <GO>
Return on Invested Capital (ROIC) 26.60% -35.00% +61.60 SPRO /roic <GO>
EV/EBITDA & P/E Valuation 5.1x — — TIE /valuation <GO>
Free Cash Flow Yield -19.53% — — TIE /fcf-yield <GO>
Operating Margin 50.20% -60.00% +110.20 SPRO /operating-margins <GO>
Net Profit Margin 68.00% -60.00% +128.00 SPRO /net-margins <GO>
Revenue Growth (YoY) 180.00% -57.70% +237.70 SPRO /revenue-growth <GO>
Dividend Yield & FCF Payout Safety 0.00% 0.00% 0.00 TIE /dividend-safety <GO>
Altman Z-Score & Debt/Equity 0.20 — — TIE /balance-sheet <GO>
Piotroski F-Score Quality 5/9 1/9 +4.00 SPRO /piotroski-score <GO>
Options Implied Move & Put/Call Skew — — — TIE /options-implied-move <GO>
RSI-14 & 200D SMA Momentum 41.2 51.3 -10.13 GOSS /rsi-technicals <GO>
10Y Yield & FRED Macro Beta — — — TIE /macro-sensitivity <GO>
Forward P/E Multiple ACTIVE 6.3x — — TIE /forward-pe <GO>
Enterprise Scale & Market Cap $64.6M $65.4M -$743.6K GOSS /market-cap <GO>
5-YEAR HISTORICAL XBRL REVENUE & MARGIN TRAJECTORY SEC FORM 10-K FY
FISCAL YEAR SPRO REV GOSS REV SPRO GROSS % GOSS GROSS % SPRO FCF GOSS FCF
FY 2025 $12.6M $48.5M — — -$12.6M -$171.3M
FY 2024 $371.0K $114.7M — — -$23.4M -$3.5M
FY 2023 $933.0K $0 — — -$33.0M -$159.2M
FRED MACRO REGIME CORRELATION COMPARISON PEARSON r
SPRO // BETA —
GOSS // BETA —