Form 4: SI-BONE Director Sells Shares After Option Exercise

SI-BONE Director Jeffrey W. Dunn exercised stock options and subsequently sold a portion of his common stock holdings, including shares held by a trust, under a pre-arranged 10b5-1 plan.

Summary

• Jeffrey W. Dunn, a Director of SI-BONE, Inc. (SIBN), reported transactions on December 8, 2025.
• Dunn acquired 1,241 shares of common stock by exercising stock options at a price of $4.32 per share.
• Concurrently, Dunn disposed of 1,241 shares directly at a weighted-average price of $19.3297 per share.
• An additional 18,759 shares were disposed of indirectly by The Jeffrey W. Dunn Living Trust Dated May 17, 2012, also at a weighted-average price of $19.3297 per share.
• The sales were executed pursuant to a Rule 10b5-1 trading plan established on May 7, 2025.
• Following these transactions, Dunn directly beneficially owns 10,307 shares (including 10,307 restricted stock units) and indirectly owns 110,115 shares through the trust.

Sentiment

Score: 5

Explanation: The filing reports a routine insider transaction executed under a pre-arranged 10b5-1 plan, which is generally considered neutral in terms of market sentiment.

Positives

• The director realized a significant profit from the exercise of options, acquiring shares at $4.32 and selling them at a weighted-average price of $19.3297.
• The sales were conducted under a pre-arranged 10b5-1 trading plan, indicating a scheduled transaction rather than a reaction to immediate, non-public information.

Negatives

• Insider selling, even if pre-planned, can sometimes be perceived negatively by the market, although the context of a 10b5-1 plan mitigates this.

Future Outlook

This Form 4 filing is a transactional report and does not contain forward-looking statements or guidance regarding the company's future outlook.

Industry Context

This filing reports a routine insider transaction and does not provide information related to broader industry trends or competitive landscape.

Related Party Transactions

• The sale of 18,759 shares by The Jeffrey W. Dunn Living Trust Dated May 17, 2012, represents an indirect beneficial ownership transaction by a related party to the reporting person.

Stakeholder Impact

• The impact on shareholders is minimal, as this is a routine, pre-planned insider transaction and does not indicate any material change in company operations or strategy.
• No direct impact on employees, customers, suppliers, or creditors is indicated by this transactional filing.

Key Dates

Keywords

SIBN, SI-BONE, Form 4, Insider Transaction, Stock Option Exercise, Share Sale, Jeffrey W. Dunn, 10b5-1 Plan