Rothberg Family Trusts Adopt 10b5-1 Plan to Sell Up to 8.9M Shares Starting January 2027
QSI is trading near its 52-week low of $0.69 (14% above the low).
Summary
Trusts for Dr. Rothberg's children adopted a 10b5-1 plan to sell up to 8.9M shares of Quantum-Si starting January 2027, adding a large potential overhang to a stock already under delisting pressure.
Key Events · Ownership and Investor Activity · QSI
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10b5-1 Plan Covers 8.9M Shares
Trusts for Dr. Rothberg's children may sell up to 8,947,746 Class A shares — about 4.5% of the 198.9M outstanding — between January 15, 2027 and January 15, 2028.
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Sales Subject to Minimum Price
The plan includes undisclosed minimum price parameters; no shares will be sold if the stock trades below that floor.
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Overhang on Delisting-Threatened Stock
Quantum-Si received a Nasdaq delisting notice in July 2026 and trades at $0.79; a large pre-arranged sale block adds supply pressure if the price recovers above the floor.
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Estate Planning Context
The plan is described as part of estate planning for Dr. Rothberg's children, not a signal of insider conviction about near-term business prospects.
Analysis · QSI · Industrial Applications And Services
Entities owned by trusts for Dr. Jonathan Rothberg's children have adopted a Rule 10b5-1 trading plan covering up to 8,947,746 shares of Quantum-Si Class A common stock — roughly 4.5% of the 198.9M Class A shares outstanding. Sales begin January 15, 2027 and run through January 15, 2028, with a minimum price floor. This is a pre-arranged, rules-based disposition, not a discretionary sale, but the sheer size of the block creates a meaningful overhang on a stock already trading below $1 and facing a Nasdaq delisting notice. The plan does not guarantee sales — if the stock stays below the undisclosed minimum price, no shares will be sold.
How filings like this one have moved
In the 30 days to Sep 10, 2026, 30.1% of the 2014 measured filings Wiseek scored 7 moved their stock by 5% or more by the next session's close. The median move was -0.11%. 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, QSI was trading at $0.79 on NASDAQ in the Industrial Applications And Services sector, with a market capitalization of approximately $170.7M. The 52-week trading range was $0.69 to $3.10. This filing was assessed with negative market sentiment and an importance score of 7 out of 10.