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CatalystAlert is a biotech catalyst intelligence platform tracking FDA decisions, PDUFA dates, and clinical-trial readouts for 1,600+ biotech stocks. Every catalyst date carries a confidence rating — confirmed against an official regulatory source, estimated, or AI-detected — alongside AI entry-timing and a public, scored prediction track record.

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ZBIO Data Readout — June 4, 2026: +6% | CatalystAlert

June 4, 2026 · Data Readout

ZBIO Data Readout: a positive outcome, +5.6%

+5.6%Zenas BioPharma, Inc. (ZBIO) →

On June 4, 2026, Zenas BioPharma, Inc. reached its Data Readout. The result was a positive outcome, and the stock moved +5.6% in the window around the event. It had already run -12.5% in the 30 days into the catalyst — the kind of pre-event run-up that often precedes binary readouts.

The move

$17.40

1d before

$18.38

Event day

$17.47

1d after

$18.42

5d after

Our prediction vs. the result

CatalystAlert called this one neutral (+0.0% expected); the stock actually moved +5.6%. Model confidence at the time: 35%.

See the full scored track record

Pre-catalyst setup

-12.5%

30-day run-up

7225%

30-day volatility

0.7×

volume spike

ZBIO catalyst calendar More Data Readouts Prediction track record Full catalyst calendar