RADXRadiopharm Theranostics Limited

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ChallengedLast material event Sep 14, 2026 · Updated Oct 30, 2026

RAD101 start moves to 1Q27; pivotal funding remains central

Radiopharm Theranostics is a clinical-stage company developing radiopharmaceuticals, led by RAD101, a PET imaging agent for detecting recurrent brain metastases; none are approved.

Radiopharm's case rests on RAD101 imaging for suspected recurrent brain metastases: Phase 2b met its primary endpoint with 93% MRI concordance across evaluable lesions. Pivotal preparation continues after the FDA meeting, with initiation now expected in 1Q27. Completed equity fundraising and a tax refund supplemented cash; the subsequent secured tax-incentive advance adds working capital. Continued spending leaves funding a workable pivotal study central. Early therapeutic programs and RAD301 imaging offer additional potential.

Thesis checklist

1 risk needs attention

Select a row for evidence
FDA minutes confirm a workable Phase 3 for RAD101Awaiting evidenceNext: FDA minutes and the resulting pivotal design, operational plan and budget.

Why it is in this state

The evidence, what would weaken it and the source filing

Radiopharm raises enough to run the Phase 3At riskNext: Committed financing and a spending plan matched to the pivotal-study budget and other clinical commitments.

Why it is in this state

The evidence, what would weaken it and the source filing

The therapy programs show activityAwaiting evidenceNext: Additional therapeutic dose-escalation results showing tolerability and activity across more patients, alongside recommended doses for further development.

Why it is in this state

The evidence, what would weaken it and the source filing

Next decision point

Does FDA feedback support a practical RAD101 pivotal program?

Tests: FDA minutes confirm a workable Phase 3 for RAD101

Official minutes expected within approximately 30 days of the October 5, 2026 announcement.

Do the FDA minutes support a pivotal study Radiopharm can execute and finance?

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
-24.4%Sep 14, 2026

RAD101 start moves to 1Q27; pivotal funding remains central

ChallengedClinical
+4.3%Aug 17, 2026

RAD101 meets Phase 2b endpoint with 93% concordance, but a Q4 2026 cash cliff arrives before the FDA design meeting lands

ChallengedClinical
-1.6%Jul 31, 2026

RAD101 met its Phase 2b primary endpoint, but cash runs out in Q4 2026 before Phase 3 can deliver data

ChallengedClinical
+149.5%Dec 15, 2025

RAD101 Phase 2b interim data: 92% primary endpoint achievement

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

Brain metastases· suspected recurrent
RAD101 · 2 upcoming · 4 completed
Phase 3 Study InitiationPivotal
H1 2027
Phase 3 Data: ToplinePivotal
TBD
Prostate cancer
RAD402 · 1 upcoming · 1 completed
Phase 1 Data
H2 2026
Pancreatic cancer· early-stage
RAD301 · 1 upcoming
Phase 2 Study Initiation
TBD
Solid tumors· PD-L1 positive
RAD204 · 1 upcoming
Phase 1 dose escalation progression
TBD
Cancers· PD-L1 positive
RAD204 · 1 completed
Phase 1 Data
Reported Jul 22, 2026
Solid tumors· HER2-positive
RAD202 · 2 completed
Phase 1 DataHEAT
Reported Apr 23, 2026
Phase 1 Data: InterimHEAT
Reported Oct 28, 2025
Solid tumors· multiple indications
RV01 · 1 completed
Phase 1/2a Study Initiation
Reported Apr 23, 2026
Or locally advanced prostate cancer
RAD402 · 1 completed
Phase 1 Study Initiation
Reported Mar 27, 2026
Solid tumors· B7-H3 positive
RV01 · 1 completed
IND Submission
Reported Jul 28, 2025

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

Quick answers

Is the Radiopharm Theranostics (RADX) investment thesis intact?
It is under pressure. Readouts currently rates the Radiopharm Theranostics Thesis Challenged. RAD101 start moves to 1Q27; pivotal funding remains central.
What is the next catalyst for Radiopharm Theranostics (RADX)?
The next dated event is Phase 1 results for RAD402, expected H2 2026, as stated by the company. Also ahead: Phase 3 start for RAD101, expected H1 2027.

Competitive landscape

5 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.