Form 4: Ceribell Director Sells 25,000 Shares Under 10b5-1 Plan

Ceribell Inc. Director Josef Parvizi sold 25,000 shares of common stock for a weighted average price of $20.26 per share under a Rule 10b5-1 trading plan.

Summary

• Josef Parvizi, a Director of Ceribell, Inc. (CBLL), sold 25,000 shares of common stock.
• The transaction occurred on December 8, 2025, at a weighted average price of $20.26 per share.
• The shares were sold in multiple transactions ranging from $20.00 to $20.53.
• The sale was executed pursuant to a pre-arranged Rule 10b5-1 trading plan.
• Following the sale, Mr. Parvizi directly owns 797,652 shares and indirectly holds 907,911 shares via the Innovation ACP Trust and 369,088 shares via the ACP 2021 Trust.

Sentiment

Score: 4

Explanation: The sale of shares by a director, even under a pre-arranged plan, typically carries a slightly negative sentiment as it can be interpreted as a lack of confidence or a move to realize gains.

Positives

• The sale was conducted under a Rule 10b5-1 trading plan, indicating a pre-scheduled transaction rather than an immediate reaction to new, material non-public information.

Negatives

• A director selling a significant number of shares (25,000) can be perceived as a negative signal by the market, potentially indicating a belief that the stock is fully valued or a lack of confidence.
• The sale reduces the director's direct ownership stake in the company.

Risks

• Potential negative market reaction to insider selling, which could put downward pressure on the stock price.
• Reduced alignment of the director's personal financial interests with those of common shareholders due to the sale.

Future Outlook

N/A

Management Comments

• The transaction reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.
• The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein.

Industry Context

Insider selling, even under a Rule 10b5-1 plan, is often scrutinized by investors as it can signal that an insider believes the stock price may be at or near its peak, or that they are diversifying their personal holdings. While 10b5-1 plans are designed to prevent accusations of trading on material non-public information, the act of selling itself can still influence market sentiment.

Comparison to Industry Standards

• Insider selling is a common occurrence across all industries. While the sale of 25,000 shares by a director is notable, it is not uncommon for executives and directors to diversify their portfolios or manage liquidity through pre-arranged trading plans.
• Without specific context on Ceribell's peers or the director's overall compensation structure, it is difficult to benchmark this specific transaction against industry norms beyond the general principle of insider activity.

Related Party Transactions

• Josef Parvizi, as sole trustee of the Josef Parvizi Trust, is deemed to have beneficial ownership of 797,652 shares.
• Josef Parvizi, as co-trustee of the Innovation ACP Trust, is deemed to share beneficial ownership of 907,911 shares.
• Josef Parvizi, as co-trustee of the ACP 2021 Trust, is deemed to share beneficial ownership of 369,088 shares.

Stakeholder Impact

• Shareholders: May interpret the director's sale as a negative signal, potentially leading to downward pressure on the stock price.

Key Dates

Recommendation

While the director's sale of 25,000 shares is a negative signal, it was executed under a Rule 10b5-1 plan, suggesting a pre-planned diversification or liquidity event rather than an immediate reaction to adverse news. The director still retains a substantial indirect and direct holding. Investors should monitor future insider activity and company performance, but this single transaction, while a slight negative, does not warrant an immediate 'sell' recommendation without further context on the company's fundamentals or other market factors. A 'hold' position is prudent to assess broader market and company-specific developments.

Keywords

Ceribell, CBLL, Josef Parvizi, insider trading, Form 4, stock sale, director, Rule 10b5-1, beneficial ownership