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Shares outstandingAs of 2026-08-07 · filed common shares: 58.23M
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Float %: Sign in
Insider ownershipDirectors and officers, from their latest Form 3/4/5 holding: 5.51%
Institutional ownership: Sign in
Short interestShare of shares outstanding, at settlement: 2.08%
Short ratioDays to cover, as published by FINRA: 2.95
Short volume (5D)Share of FINRA reporting-facility volume sold short, daily flow: 31.50%
Short volume (20D)Share of FINRA reporting-facility volume sold short, daily flow: 35.50%
Avg volume (10D)

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Source: SEC filings. Information and analytics, not investment advice.

Rev growth (fwd)

Avg volume (3 months)

Profitability

Gross margin: —
Operating marginTTM to Jun 26: 12.82%
Net margin: —
EBITDA marginFY Dec 25: 9.45%
Return on equityNet income (TTM to Jun 26) ÷ average shareholders equity: 19.17%
Return on assetsNet income (TTM to Jun 26) ÷ average total assets: 12.85%

Growth

Revenue growth (annual YoY): 39.24%
Revenue growth (latest qtr YoY): -100.00%
Revenue growth (fwd): Sign in
Net income growth (annual YoY): —
Net income growth (latest qtr YoY): —
EPS growth (fwd): Sign in
Net income growth (QoQ): —

Valuation

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P/E (fwd): Sign in
PEG: Sign in
PEG (fwd): Sign in
Price / book: Sign in
Price / sales

Price / operating cash flow

P/FCF

EV / revenue

EV / EBITDA

EPSDiluted, TTM to Jun 26

0.14

EPS (fwd)

Financial health

Cash & equivalentsas of Jun 26: $50.77M
Total cash: Sign in
Total debtBorrowings + finance and operating lease liabilities, as of Jun 26: $2.04M
Debt / equityas of Jun 26: 4.62%
Current ratioas of Jun 26: 6.12
Quick ratio: —
Operating cash flowTTM to Jun 26: $19.58M
Free cash flow: —
TTM revenue / diluted shareDiluted, TTM to Jun 26: 0.78

SPRO stock Statistics — Spero Therapeutics, Inc. filings, insiders & smart money · Instaport