Catalyst4 Discloses $83.4M PIPE Stake, Now Controls 49.9% of MapLight
MPLT sits 27% above its 52-week low of $9.1.
Summary
Catalyst4, Inc. disclosed it bought $83.4 million of MapLight stock and warrants in the recent PIPE, raising its stake to 49.9%.
Key Events · Ownership and Investor Activity · MPLT
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Catalyst4's PIPE Participation
Catalyst4 purchased 4,400,000 shares at $11.38 per share and 2,928,686 pre-funded warrants for a total of $83,400,153.82 in the PIPE that closed August 14, 2026.
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Ownership Reaches 49.9%
Catalyst4 now beneficially owns 27,536,011 shares, representing 49.9% of MapLight's voting common stock, just below the 49.99% cap that would trigger a change of control.
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Warrant Exercise Cap
Catalyst4 is prohibited from exercising its pre-funded warrants if doing so would push its beneficial ownership above 49.99%, so only 2,229,322 of the 2,928,686 warrants are included in its reported ownership.
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Prior Open-Market Accumulation
This follows Catalyst4's $15.3 million open-market purchase in late July, which had already raised its stake to 47.9%.
Analysis · MPLT · Life Sciences
Catalyst4, Inc. has disclosed its full participation in MapLight's $150 million private placement, purchasing $83.4 million of common stock and pre-funded warrants. This brings its beneficial ownership to 49.9%, just below the 49.99% cap that would trigger a change of control. The filing confirms Catalyst4's dominant position and its continued financial commitment following its earlier open-market purchases.
How filings like this one have moved
In the 30 days to Oct 21, 2026, 29.2% of the 1544 measured filings Wiseek scored 7 moved their stock by 5% or more by the next session's close. The median move was -0.49%. 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, MPLT was trading at $11.59 on NASDAQ in the Life Sciences sector, with a market capitalization of approximately $503.7M. The 52-week trading range was $9.10 to $40.43. This filing was assessed with positive market sentiment and an importance score of 7 out of 10.