INSM — Insmed Incorporated price, chart and key statistics

Price data

Price

$121.16

YTD price return

-30.38%

YTD total return

-30.38%

Market cap

26.6B2016-12 818.6M2026-11 26.6B+3146.3% over the window

Enterprise value

26B

Shares outstanding

219.4M2016-09 61.9M2026-09 219.4M+254.5% over the window

52W low

$90.39

52W high

$212.75

From 52W high

-43.05%

From 52W low

+34.04%

52W range

25%$90.39–$213

Beta

0.85

Volume

Rel volume

0.43×

30D volume

3.6M

30D $ vol

375.4M

Insider trading

Insider net 1WNo open-market insider purchase or sale with a transaction date in the last 7 days, as filed on Form 4.

none

Insider net 1MNo open-market insider purchase or sale with a transaction date in the last 30 days, as filed on Form 4.

none

Insider net 3M0 insider-days of buying (no priced lot) and 2 of selling ($3.7M) in the last 91 days, by transaction date, open-market transactions only — awards, exercises, tax withholding and employee-plan purchases are not counted. A Form 4 is filed within two business days of the trade, so the newest days may not be in yet.

−$3.7M

Insider net 1Y0 insider-days of buying (no priced lot) and 62 of selling ($122.8M) in the last 365 days, by transaction date, open-market transactions only — awards, exercises, tax withholding and employee-plan purchases are not counted. A Form 4 is filed within two business days of the trade, so the newest days may not be in yet.

−$122.8M

Form 4 transactions by trade date, as filed; latest on file 2026-09-09.

Fundamentals

Sales (ttm)

1.5B2016-12 02026-09 1.5B

Sales/share

$6.932016-12 $0.002026-09 $6.93

EPS (ttm)

-$2.802016-09 -$2.252026-09 -$2.80+24.5% over the window

FCF (ttm)

-627.6M2016-09 -120.1M2026-09 -627.6M+422.4% over the window

FCF/share

-$2.862016-09 -$1.942026-09 -$2.86+47.4% over the window

Book value/share

$3.312016-09 $3.522026-09 $3.31-6.0% over the window

Net margin

-39.85%2018-12 -3297.2%2026-09 -39.9%-98.8% over the window

ROE

-83.39%2016-09 -63.9%2026-09 -83.4%+30.6% over the window

ROA

-27.21%2016-09 -50.3%2026-09 -27.2%-45.9% over the window

Debt / equity

0.75×2016-09 0.162026-09 0.75+371.2% over the window

Current ratio

2.862016-09 8.792026-09 2.86-67.5% over the window

Growth (CAGR, ttm) · 10Y

Sales

+240.25%2025-09-30 → 2026-09-30447M → 1.5B (+240.0% total)+75.55%2023-09-30 → 2026-09-30280.8M → 1.5B (+441.2% total)+54.31%2021-09-30 → 2026-09-30173.8M → 1.5B (+774.6% total)n/a

Shares

+2.87%2025-09-30 → 2026-09-30213.3M → 219.4M (+2.9% total)+15.31%2023-09-30 → 2026-09-30143.1M → 219.4M (+53.3% total)+13.13%2021-09-30 → 2026-09-30118.4M → 219.4M (+85.3% total)+13.49%2016-09-30 → 2026-09-3061.9M → 219.4M (+254.5% total)

Per-share growth (CAGR, ttm) · 10Y

Sales/share

+230.77%2025-09-30 → 2026-09-30$2.10 → $6.93 (+230.5% total)+52.24%2023-09-30 → 2026-09-30$1.96 → $6.93 (+252.9% total)+36.39%2021-09-30 → 2026-09-30$1.47 → $6.93 (+371.9% total)n/a

Book value/share

-25.35%2025-09-30 → 2026-09-30$4.43 → $3.31 (-25.3% total)n/a-4.94%2021-09-30 → 2026-09-30$4.26 → $3.31 (-22.4% total)-0.61%2016-09-30 → 2026-09-30$3.52 → $3.31 (-6.0% total)

Price

-36.57%2025-11-13 → 2026-11-13$190.96 → $121.16 (-36.6% total)Price appreciation from split-adjusted daily closes, excluding dividends; endpoints are exact trading-day anniversaries of the latest close.+71.76%2023-11-13 → 2026-11-13$23.90 → $121.16 (+406.9% total)Price appreciation from split-adjusted daily closes, excluding dividends; endpoints are exact trading-day anniversaries of the latest close.+30.61%2021-11-12 → 2026-11-13$31.86 → $121.16 (+280.3% total)Price appreciation from split-adjusted daily closes, excluding dividends; endpoints are exact trading-day anniversaries of the latest close.+23.68%2016-11-11 → 2026-11-13$14.45 → $121.16 (+738.5% total)Price appreciation from split-adjusted daily closes, excluding dividends; endpoints are exact trading-day anniversaries of the latest close.

Total return

-36.57%2025-11-13 → 2026-11-13$190.96 → $121.16 (-36.6% total)Total return with dividends reinvested (adjusted daily closes); endpoints are exact trading-day anniversaries of the latest close. The gap against the Price row is the dividend contribution.+71.76%2023-11-13 → 2026-11-13$23.90 → $121.16 (+406.9% total)Total return with dividends reinvested (adjusted daily closes); endpoints are exact trading-day anniversaries of the latest close. The gap against the Price row is the dividend contribution.+30.61%2021-11-12 → 2026-11-13$31.86 → $121.16 (+280.3% total)Total return with dividends reinvested (adjusted daily closes); endpoints are exact trading-day anniversaries of the latest close. The gap against the Price row is the dividend contribution.+23.68%2016-11-11 → 2026-11-13$14.45 → $121.16 (+738.5% total)Total return with dividends reinvested (adjusted daily closes); endpoints are exact trading-day anniversaries of the latest close. The gap against the Price row is the dividend contribution.

Fundamentals end at the last reported quarter; price and total return end at the latest close.

Valuation

P/E (ttm)Price ÷ TTM diluted EPS. Net income carries everything below the operating line, including one-off gains. Negative when the trailing year lost money.

-43.3×2016-12 -5.882026-11 -43.88+645.7% over the window

Fwd P/E

172.6×

P/S (ttm)Market cap ÷ TTM revenue.

17.5×2018-12 103.132026-11 17.49-83.0% over the window

P/B (mrq)Market cap ÷ stockholders' equity at the most recent quarter end.

36.6×2016-12 3.762026-11 36.59+873.7% over the window

EV/Sales (ttm)

17.1×

FCF yield (ttm)TTM free cash flow ÷ market cap — the inverse of P/FCF.

-2.36%2016-09 -14.7%2026-09 -2.5%-82.9% over the window

Buyback yield (realized, 1y)1 − shares_at(2026-09-30) ÷ shares_at(2025-09-30) = 1 − 219.4M ÷ 213.3M. Point-in-time share counts from the company's own SEC filings (the same count at both ends), published only when the cash flow statement shows repurchases inside that window. A falling price can't inflate it; negative means net dilution.

-2.87%

Shareholder yield (realized, 1y)Buyback leg + dividend leg: shares retired over the year (-2.87%) + dividends paid over that year ($0) ÷ market_cap_at(2025-09-30) ($30.6B). Both legs are measured against the start of the window, so a payout can't shrink its own denominator.

-2.87%

Buyback yield (cash, ttm)Buybacks net of issuance over the trailing twelve months ($0) ÷ today's market cap ($26.6B). Dollars SPENT over what the company is worth NOW — a stock that fell after buying reads high.

0.00%2016-09 0.0%2026-09 0.0%

Shareholder yield (cash, ttm)(TTM buybacks net of issuance $0 + TTM dividends $0) ÷ today's market cap ($26.6B). Same caveat as the cash buyback yield.

0.00%2016-09 0.0%2026-09 0.0%

Vs own 10Y history

P/S

44th

P/B

81st