Woo Raymond, Chief Technology Officer at CeriBell (CBLL), has filed 60 Form 4 transactions, all in that single company. The pattern is one-sided: zero open-market purchases and roughly $1.98 million in total sales. His recent activity, spanning March through October 2026, shows 11 open-market sales and no buys.
The sales cluster around option exercises and equity grants. On October 1, 2026, Raymond sold CBLL shares worth $119,145, paired with option exercises valued at $108 and $17,753. A similar structure appeared on September 8, when he sold $118,900 while exercising options worth $108, $17,753, and $18,791. Earlier sales include $47,535 on August 21, $35,388 on May 21, and a series on May 1 totaling $226,928 across three separate sale transactions, each matched with option exercises. The April 1 filings show two zero-value grants (code A) alongside sales of $122,840, $56,053, and $27,349, again with corresponding option exercises. The March 2 sale of $120,723 came with a $31,090 exercise.
The dollar values of the option exercises are small relative to the sale proceeds, which is typical for a tax-withholding or cashless exercise structure. Raymond has not acquired shares through open-market purchases at any point in the filing history. The most recent transaction, the October 1 sale, continues the established direction.
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