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Rosen Law Firm Encourages Western Alliance Bancorporation Investors to Inquire About Securities Class Action Investigation

On Dec. 11, 2025, The Rosen Law Firm announced an investigation into potential securities claims for Western Alliance Bancorporation shareholders, representing investors globally in class actions.
Western Alliance disclosed it had sued Cantor Group V LLC alleging fraud related to collateral loans, and Rosen says the probe stems from allegations of misleading business information to shareholders.
Following the disclosure, Western Alliance shares plunged 10.88%, and Rosen Law Firm is inviting claims via its online form or by calling Phillip Kim, Esq., or toll‑free 866‑767‑3653.
The Rosen Law Firm is preparing a class action, stating shareholders who purchased Western Alliance Securities may be entitled to compensation on a contingency‑fee basis.
Separately, the firm is probing Tandem Diabetes Care, Inc. after an August 7, 2025 voluntary device correction and 19.9% stock drop, highlighting Lawrence Rosen, founding partner, and Lawdragon and Super Lawyers recognitions.

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