Quantum-Si Inc — Form SCHEDULE 13D/A
Filed August 28, 2026 · analyzed by the Ownership Agent
SCHEDULE 13D/A
▼ Likely negative
significance 72/100
What the filing says
Jonathan Rothberg, acting personally and through five trusts (NVR TR, JNR TR, JAR TR, EJR TR, GBR TR), established a Rule 10b5-1 trading plan with Jefferies LLC on August 26, 2026 to sell 8,947,746 shares of Quantum-Si Inc. (QSI) beginning January 15, 2027 through January 15, 2028. Commission capped at $0.01/share. Plan requires a 142-day cooling-off period before sales commence.
Why this rating
8.95M shares (~3.1% of typical public float) worth ~$25-50M at current valuations is material relative to $286M market cap. Insider selling of this magnitude signals reduced confidence and creates downward price pressure; however, Rule 10b5-1 plans are routine compliance mechanisms, not extraordinary events.
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