Unverified record. The outcome below was inferred from the share-price reaction around this date. Nobody has confirmed it against an FDA, SEC or company document, and it may be wrong: we have published at least one inferred outcome that turned out to be impossible (see corrections). Treat it as a price observation, not as a regulatory fact. Verified decisions on this site always link a primary source.
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ZLAB FDA Decision outcome unverified · 2025-07-30

Rebuilt daily·next FDA decision on the calendar

Price into the decision (T-120)

PDUFA 7/30/25$43.03$24.322/12/25
Daily close, T-120 (2/12/25) through T+5. Run-up high $43.03 on 6/16/25, low $24.32 on 4/16/25 (T-120 to T-1). FDA decision 7/30/25. Historical price action, not a forecast.
Positioning before the decision
On Jul 16, 2025, 14 days before the decision date, at-the-money options priced a move of ±15.0% through Aug 15, 2025 (the first listed expiry after the decision; ATM implied volatility 65%). The stock closed -4.8% at the first close across the decision and -2.5% five trading days on. A straddle priced weeks out covers ordinary movement plus the event, so this is the move the options market priced through that expiry, not the event-implied move alone. How this compares across 1,000+ decisions.

Decision facts

FDA decision date2025-07-30
OutcomeUnconfirmed · price consistent with a CRL~ price-only (validating)
Decision-day move-4.8%
T-120 run-up (low→high)+15.0% ($24.32→$43.03)
ValidationOutcome consistent with price; primary-source verification in progress.
Market-cap tierMid
Cohort decision-day move (history)2.1% median (n=234)

Cohort move is the historical median absolute decision-day move for this market-cap tier across our run-up study. History, not a prediction.

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