HSR Antitrust Waiting Period Terminated for Angelini Pharma Acquisition
CPRX sits 65% above its 52-week low of $19.05.
Summary
Catalyst Pharmaceuticals announced that the FTC granted early termination of the HSR Act waiting period, clearing a key regulatory condition for its acquisition by Angelini Pharma.
Key Events · M&A and Partnerships · CPRX
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HSR Waiting Period Terminated
The FTC granted early termination of the Hart-Scott-Rodino Act waiting period on June 16, 2026, a critical step for the merger.
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Merger Progress
This regulatory clearance advances the previously announced $4.1 billion acquisition by Angelini Pharma, which is expected to close in Q3 2026.
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Shareholder Vote Pending
The merger remains subject to shareholder approval, with a special meeting scheduled for July 8, 2026.
Analysis · CPRX · Life Sciences
This 8-K announces that the U.S. Federal Trade Commission has granted early termination of the Hart-Scott-Rodino (HSR) Act waiting period for the proposed acquisition of Catalyst Pharmaceuticals by Angelini Pharma. This removes a significant regulatory hurdle, moving the $4.1 billion merger closer to completion. The transaction remains subject to shareholder approval, with a vote scheduled for July 8, 2026.
How filings like this one have moved
In the 30 days to Oct 22, 2026, 36.9% of the 1029 measured filings Wiseek scored 8 moved their stock by 5% or more by the next session's close. The median move was -0.77%. These are measured outcomes after filings of this importance, not a forecast for this one.
Measured one observation per ticker per day, after exclusions. Current figures: Filing Impact Tracker · open dataset
At the time of this filing, CPRX was trading at $31.40 on NASDAQ in the Life Sciences sector, with a market capitalization of approximately $3.8B. The 52-week trading range was $19.05 to $32.56. This filing was assessed with positive market sentiment and an importance score of 8 out of 10.