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CLLSVery BearishCorporate Developmentsnews

High materiality8/10

Allogene Arbitration Victory Pressures Cellectis Shares Tuesday

Dec 16, 2025, 1:32 PM EST1 sourcesAI-analyzed

Why it may matterVerify against the original reporting

The unfavorable arbitration exacerbates Cellectis's losing position in a competitive CAR-T market. Historical instances, such as from other biotechs facing arbitration losses, demonstrate significant stock declines.

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What happened, with direct paths to the underlying reporting

CLLS shares fell 17.35% after unfavorable arbitration ruling. Allogene retains full control over cema-cel therapy. Cellectis's financial claims were rejected related to trial payments. Partial license termination limits Cellectis to UCART19 V1 product. Allogene targets key clinical analysis in early 2026 for cema-cel.

CLLS shares fell 17.35% after unfavorable arbitration ruling.
Allogene retains full control over cema-cel therapy.
Cellectis's financial claims were rejected related to trial payments.
Partial license termination limits Cellectis to UCART19 V1 product.
Allogene targets key clinical analysis in early 2026 for cema-cel.

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