10% Owner Opaleye Adds $1.06M to Alpha Cognition Stake
ACOG sits 88% above its 52-week low of $4.5 on elevated volume (2.1× avg).
Summary
10% owner Opaleye Management purchased $1.06 million of Alpha Cognition stock over three days, bringing its total stake to 3.17 million shares.
Key Events · Ownership and Investor Activity · ACOG
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Opaleye Buys $1.06M More
10% owner Opaleye Management purchased 123,918 shares for $1,062,505.62 across four transactions from September 14-16 at $8.40-$8.70 per share.
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Stake Reaches 3.17M Shares
Post-transaction holdings total 3,172,141 shares, up from 3,048,223 shares before this week's purchases.
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Multi-Month Accumulation Continues
This follows $1M in June, $1.57M in July, and $423K in August — over $4M in open-market buys by Opaleye in the last 90 days.
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Institutional Conviction Signal
The persistent buying by a large institutional holder aligns with improving Zunveyl sales and a narrowing Q2 loss, despite the company's material weakness in internal controls.
Analysis · ACOG · Life Sciences
Opaleye Management, a 10% owner of Alpha Cognition, bought another $1.06 million of stock across four transactions between September 14 and 16, paying $8.40 to $8.70 per share. This extends a multi-month accumulation that now totals over $4 million since June. The continued buying by a large institutional holder suggests conviction in the company's commercial trajectory, particularly as Zunveyl sales ramp and the company works through its material weakness in internal controls.
How filings like this one have moved
In the 30 days to Sep 16, 2026, 29.6% of the 1716 measured filings Wiseek scored 7 moved their stock by 5% or more by the next session's close. The median move was -0.32%. 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, ACOG was trading at $8.47 on NASDAQ in the Life Sciences sector, with a market capitalization of approximately $182.9M. The 52-week trading range was $4.50 to $10.14. This filing was assessed with positive market sentiment and an importance score of 7 out of 10.