Zenas BioPharma
ZBIONASDAQUSD
- Source valuation snapshot. Not a live recalculation.
- Latest filed annual earnings; price snapshot date unavailable. Not forward P/E.
- Diluted earnings per share from the latest filed annual.
- $28.58 Prior regular-session close from the quote source.
- $28.50–$29.51 Regular-session low and high so far today.
- 306.3K Regular-session shares traded · Nov 11, 4:00 PM ET.
- Not yet confirmed The company has not confirmed its next report date. Reported quarters are available in the chart’s Earnings view.
- $13.50–$44.60 52-week trading low and high returned by the quote source.
Understand the Business
Why the Stock Moved
Period-matched expectations history is not yet available. Current metrics are not a substitute for a historical explanation.
The core investment thesis
Own ZBIO if Zenas BioPharma is a clinical‑stage immunology biotech whose value hinges on converting a differentiated, non‑depleting B‑cell antibody (obexelimab) and a CNS‑penetrant BTK oral (orelabrutinib) into approved, commercial products while surviving near‑term cash burn through.
ZBIO price history
Loading recent earnings…
Investment thesis
What must happen next
Regulatory approval of obexelimab for IgG4‑RD with a label that supports chronic dosing will be the primary engine of near‑term commercial revenue and will validate the company’s valuation thesis.StrengtheningMateriality: High
Item 1 Business: INDIGO Phase 3 met primary endpoint (56% reduction in flare risk. If approved and labeled for chronic use, obexelimab can generate the first commercial sales that justify the current market valuation; failure or a narrow label would collapse near‑term revenue expectations and force re‑pricing.
Watch: FDA requests additional pivotal data or a post‑approval study that delays approval and restricts label.
Supporting sources
Source notes are factual paraphrases; read the original disclosures below.
Item 1 Business: INDIGO Phase 3 met primary endpoint (56% reduction in flare risk.
Open source ↗Positive MRI and biomarker signals in RMS (MoonStone) and a favorable SunStone SLE topline would materially expand obexelimab’s addressable market and justify additional Phase 3 investment, converting clinical signals into broader commercial opportunity.HoldingMateriality: High
Item 1 Business / MD&A: MoonStone met its 12‑week primary endpoint with a 95% reduction in new GdE T1 lesions (p=0.0009) and 24‑week data maintained the effect. If MRI lesion reductions translate into clinical benefit and regulatoryly acceptable endpoints, obexelimab could become a multi‑indication franchise rather than a single‑indication drug; if signals fail to translate, the company loses optionality and the valuation premium evaporates.
Watch: MRI lesion reductions fail to predict meaningful disability outcomes or accepted clinical endpoints in regulators’ view.
Supporting sources
Source notes are factual paraphrases; read the original disclosures below.
Item 1 Business / MD&A: MoonStone met its 12‑week primary endpoint with a 95% reduction in new GdE T1 lesions.
Open source ↗Given accelerating cash burn, Zenas must secure financing, a partnership, or milestone payments to complete global Phase 3 programs and commercialize obexelimab; otherwise programs will be delayed or significantly diluted.StrengtheningMateriality: Medium
fundamentals: cash fell from $319,742,000 (2024) to $110,641,000 (2025). A successful financing or partnership preserves development timelines and shareholder value; failure forces program slowdowns, asset sales, or dilutive raises that hurt the equity value.
Watch: Company secures a material partnership, licensing milestone, or equity offering that replenishes cash.
Supporting sources
Source notes are factual paraphrases; read the original disclosures below.
fundamentals: cash fell from $319,742,000 (2024) to $110,641,000 (2025).
Open source ↗
Full investment case & evidence
Loading the original research archive…
Original research
Regulatory approval of obexelimab for IgG4‑RD with a label that supports chronic dosing will be the primary engine of near‑term commercial revenue and will validate the company’s valuation thesis. If approved and labeled for chronic use, obexelimab can generate the first commercial sales that justify the current market valuation; failure or a narrow label would collapse near‑term revenue expectations and force re‑pricing.
Positive MRI and biomarker signals in RMS (MoonStone) and a favorable SunStone SLE topline would materially expand obexelimab’s addressable market and justify additional Phase 3 investment, converting clinical signals into broader commercial opportunity. If MRI lesion reductions translate into clinical benefit and regulatoryly acceptable endpoints, obexelimab could become a multi‑indication franchise rather than a single‑indication drug; if signals fail to translate, the company loses optionality and the valuation premium evaporates.
Given accelerating cash burn, Zenas must secure financing, a partnership, or milestone payments to complete global Phase 3 programs and commercialize obexelimab; otherwise programs will be delayed or significantly diluted. A successful financing or partnership preserves development timelines and shareholder value; failure forces program slowdowns, asset sales, or dilutive raises that hurt the equity value.
All standing thesis claims
Original report summary
Zenas BioPharma is a clinical‑stage immunology biotech whose value hinges on converting a differentiated, non‑depleting B‑cell antibody (obexelimab) and a CNS‑penetrant BTK oral (orelabrutinib) into approved, commercial products while surviving near‑term cash burn through.
Bull case and bear case
Bull case and bear case for Zenas BioPharma
Where the evidence on Zenas BioPharma stands: Holding on the latest evidence (Nov 12, 2026). Of its 3 thesis points, 2 strengthening and 1 holding.
Bull case: what the evidence supports
Regulatory approval of obexelimab for IgG4‑RD with a label that supports chronic dosing will be the primary engine of near‑term commercial revenue and will validate the company’s valuation thesis.
Positive MRI and biomarker signals in RMS (MoonStone) and a favorable SunStone SLE topline would materially expand obexelimab’s addressable market and justify additional Phase 3 investment, converting clinical signals into broader commercial opportunity.
Given accelerating cash burn, Zenas must secure financing, a partnership, or milestone payments to complete global Phase 3 programs and commercialize obexelimab; otherwise programs will be delayed or significantly diluted.
Bear case: what would count against it
FDA requests additional pivotal data or a post‑approval study that delays approval and restricts label.
MRI lesion reductions fail to predict meaningful disability outcomes or accepted clinical endpoints in regulators’ view.
Company secures a material partnership, licensing milestone, or equity offering that replenishes cash.
Thesis-Break Engine
What has broken in Zenas BioPharma’s thesis
Each break OptimistFi flagged on Zenas BioPharma, dated — with what has historically followed the same kind of break across the market, not a forecast for Zenas BioPharma.
- Revenue decline
MARKET + FINANCIAL SNAPSHOT
The numbers behind the thesis
What Changed
- MixedOther material event.
Zenas BioPharma filed an SEC 8-K on 2026-11-06: Other material event. It is a dated development that tests the current thesis.
- MixedReported results of operations (earnings release).
Zenas BioPharma filed an SEC 8-K on 2026-11-05: Reported results of operations (earnings release). It is a dated development that tests the current thesis.
- MixedRegulation FD disclosure.
Zenas BioPharma filed an SEC 8-K on 2026-10-13: Regulation FD disclosure. It is a dated development that tests the current thesis.
Risks / falsifiers
What could break the thesis
- FDA requests additional pivotal data or a post‑approval study that delays approval and restricts label.
- MRI lesion reductions fail to predict meaningful disability outcomes or accepted clinical endpoints in regulators’ view.
- Company secures a material partnership, licensing milestone, or equity offering that replenishes cash.
ZBIO news
Loading headlines…
Financial statements
ZBIO income statement
Annual filed results · USD · Oldest to newest. Margins are calculated from the reported figures.
ZBIO: quick answers
- What is ZBIO's short interest?
- As of October 30, 2026, 11.4M ZBIO shares were sold short, 16.7% of its shares outstanding, down 9.4% from the count before. At the stock's average daily volume that is 24 days to cover. FINRA publishes the count twice a month. ZBIO short interest history
