TENXTenax Therapeutics, Inc.

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Market reactionShares fell 11% on Nov 5.

ChallengedLast material event Oct 8, 2026 · Updated Oct 25, 2026

LEVEL missed; Tenax amends LEVEL-2 to enrol sicker PH-HFpEF patients

Tenax Therapeutics is developing TNX-103, oral levosimendan, for pulmonary hypertension caused by heart failure with preserved ejection fraction (PH-HFpEF); it is not approved.

Phase 3 LEVEL of TNX-103 missed its primary endpoint: walk distance improved 3.5 meters more than placebo (p=0.63). Patients who walked less than 333 meters at baseline improved 26.3 meters (nominal p=0.0112), and NT-proBNP fell 49%. Tenax paused LEVEL-2, its second Phase 3, to enrol patients with low walk distance, or moderate walk distance with an enlarged right atrium. It has requested an FDA Type C meeting. Cash of $118.0 million funds operations through the second quarter of 2028.

Thesis checklist

2 risks need attention

Select a row for evidence
FDA supports the amended LEVEL-2Awaiting evidenceNext: Type C meeting feedback.

Why it is in this state

The evidence, what would weaken it and the source filing

LEVEL-2 restarts enrollmentAt riskNext: Restart of LEVEL-2 enrollment.

Why it is in this state

The evidence, what would weaken it and the source filing

Subgroup signal holds upAt riskNext: LEVEL-2 results in the enriched population.

Why it is in this state

The evidence, what would weaken it and the source filing

Cash lasts to LEVEL-2 dataSupportedNext: Quarterly cash updates.

Why it is in this state

The evidence, what would weaken it and the source filing

Next decision point

FDA Type C meeting on TNX-103

Tests: FDA supports the amended LEVEL-2

Not yet scheduled publicly

Does FDA accept an enriched LEVEL-2 as a path to approval for TNX-103 in PH-HFpEF?

Strong, inconclusive and weak outcomes

What to look for in the result and how each would move the checklist

Questions to investigate

History

Price and material events

Select an event marker to read the update below. Marker colors show Thesis status.

ChallengedCurrentClinical
-2.6%Oct 8, 2026

LEVEL missed; Tenax amends LEVEL-2 to enrol sicker PH-HFpEF patients

BrokenClinical
-89.8%Aug 10, 2026

LEVEL Phase 3 miss forces enriched-population retry; FDA Type C meeting will determine whether a subgroup rescue is registrationally viable

IntactClinical
+31.7%Mar 10, 2026

LEVEL Phase 3 randomization target achieved

About this history: every entry shows when the Thesis moved and what it said. The reasoning behind each move (the evidence, the analysis and the source filing) and the earnings write-ups are part of a subscription.

Pipeline

Pulmonary hypertension· heart failure with preserved ejection fraction
TNX-103 · 5 upcoming · 3 completed
LEVEL-2 protocol design paper publication and development update
Q1 2027
Type C Meeting
TBD
Regulatory AlignmentEU
TBD
Phase 3 Data: ToplineLEVEL-2
TBD
Phase 3 Enrollment: CompletionLEVEL-2
Year-end 2027

Dates, trials and completed outcomes are open to everyone. What each upcoming milestone hinges on is part of a subscription.

Quick answers

Is the Tenax Therapeutics (TENX) investment thesis intact?
It is under pressure. Readouts currently rates the Tenax Therapeutics Thesis Challenged. LEVEL missed; Tenax amends LEVEL-2 to enrol sicker PH-HFpEF patients.
How long will Tenax Therapeutics' cash last?
Tenax Therapeutics has said its cash will fund operations through fiscal 2028 (guidance as of November 5, 2026). It reported $114 million in cash as of September 30, 2026.

Competitive landscape

7 peers tracked

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Financial snapshot

Dates and calculation details

Cash: Market-data provider estimate; measurement period unavailable.

Debt: Market-data provider estimate; a complete comparable filing balance is unavailable.

Quarterly burn: Estimated from trailing free cash flow; measurement period unavailable.

Net cash and estimated runway require verified matching measurement periods. Missing debt components are not assumed to be zero.

Runway: No underlying guidance available.