Sionna Therapeutics, Inc. (SION) intrinsic value & 10-year financials

Sionna Therapeutics, Inc. (SION) has no Graham intrinsic value right now because the formula needs positive earnings.

Graham intrinsic value
—
Share price (Oct 17, 2026)
$3.89
Market cap
$155.5M
Revenue (FY2025)
—
ROIC (10-yr avg)
-123.0%
Free cash flow (FY2025)
-$66.7M

SION 10-year financial history

Fiscal year Revenue Net income EPS (diluted) Free cash flow Operating margin ROIC
FY2025 — -$75.3M -$1.88 -$66.7M — -282.6%
FY2024 — -$61.7M -$1.60 -$52.8M — 36.6%
FY2023 — — — — — —

Source: annual 10-K filings on SEC EDGAR. Figures in USD.

Executive summary

Sionna Therapeutics, Inc. revenue growth over the past decade is N/A; insufficient history prevents a reliable 10-year CAGR calculation.

Sionna Therapeutics, Inc. has earned high returns on invested capital, averaging 16.9% ROIC over the available history. High ROIC is consistent with a durable franchise, but it is not by itself proof of an economic moat.

Sionna Therapeutics, Inc. capital allocation metrics are N/A for the decade; share count and net debt history are incomplete.

Benjamin Graham lens

Sionna Therapeutics, Inc. is evaluated under Benjamin Graham's defensive framework using SEC EDGAR fundamentals using an 8.5 + 2g earnings multiple and a 5.1% AAA bond-yield baseline.

SION stock: frequently asked questions

What is the intrinsic value of Sionna Therapeutics, Inc. (SION) stock?

Graham's formula only works with positive earnings. Sionna Therapeutics, Inc. reported diluted EPS of -$1.88 in fiscal 2025, so no Graham value is shown. The 10-year table shows revenue and cash-flow trends instead.

Does Sionna Therapeutics, Inc. generate free cash flow?

Sionna Therapeutics, Inc. generated -$66.7M of free cash flow (operating cash flow minus capital expenditures) in fiscal 2025. Free cash flow was positive in 0 of the last 2 reported years.

What is SION's return on invested capital?

Average ROIC over the last 3 fiscal years was -123.0%, and average return on equity was -30.4%. Sustained ROIC above about 15% usually points to a durable competitive advantage.

Where does this SION data come from?

From Sionna Therapeutics, Inc.'s annual 10-K filings on SEC EDGAR, most recently filed Aug 6, 2026. Prices are end-of-day snapshots; valuations are formula outputs, not investment advice.

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