Form 4: SI-BONE Director Sells Shares Under 10b5-1 Plan

SI-BONE Director Jeffrey W. Dunn executed pre-planned stock option exercises and subsequent sales of common stock on November 11, 2025.

Summary

• Jeffrey W. Dunn, a Director of SI-BONE, Inc. (SIBN), reported transactions on November 11, 2025.
• The transactions included the exercise of stock options to acquire 23,148 shares of common stock at an exercise price of $4.32 per share.
• Additionally, 56,852 shares of common stock were acquired through the exercise of stock options at an exercise price of $4.32 per share.
• A total of 23,148 shares of common stock were sold at a price of $18.95 per share.
• Another 56,852 shares of common stock were sold at a price of $18.95 per share.
• All sales were conducted pursuant to a Rule 10b5-1 trading plan established on May 7, 2025.
• Following these transactions, Mr. Dunn directly owns 10,307 shares of common stock, which includes shares issuable upon settlement of restricted stock units.
• An additional 118,874 shares are indirectly owned by The Jeffrey W. Dunn Living Trust dated May 17, 2012.

Sentiment

Score: 5

Explanation: The sentiment is neutral. While a director selling shares can sometimes be viewed negatively, the transactions were pre-planned under a 10b5-1 plan, which mitigates concerns about reactive selling. The exercise of options is a positive event for the insider.

Positives

• The director exercised stock options at a significantly lower price ($4.32) than the sale price ($18.95), indicating a profitable transaction for the director.
• The transactions were executed under a pre-established Rule 10b5-1 trading plan, which suggests a planned and not reactive sale.

Negatives

• A director selling a substantial number of shares (80,000 shares total) could be perceived by some investors as a potential signal of reduced confidence, despite being pre-planned.

Future Outlook

NA

Industry Context

This filing reports an insider transaction, which is a routine disclosure for publicly traded companies. It does not provide information on broader industry trends or competitive landscape.

Related Party Transactions

• Shares are held indirectly by The Jeffrey W. Dunn Living Trust Dated May 17, 2012, which is a related party to the reporting person.

Stakeholder Impact

• Shareholders may note the director's sale of shares, which could be interpreted in various ways depending on individual investment strategies and market sentiment, despite the 10b5-1 plan.

Key Dates

Keywords

SI-BONE, SIBN, Form 4, Insider Trading, Stock Options, 10b5-1 Plan, Director Transactions, Equity Sales