Form 4: SI-BONE Director Sells Shares for Tax Obligations

SI-BONE Director Jeffrey W. Dunn reported a non-discretionary sale of 337 common shares to cover tax withholding obligations related to restricted stock unit vesting.

Summary

• Jeffrey W. Dunn, a Director of SI-BONE, Inc. (SIBN), reported a transaction on February 2, 2026.
• The transaction involved the disposition of 337 shares of Common Stock at a weighted average price of $16.4157 per share.
• This sale was executed to cover tax withholding obligations associated with the vesting of restricted stock units and was not a discretionary trade.
• The transaction was made pursuant to a contract, instruction, or written plan intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).
• Following the reported transaction, Jeffrey W. Dunn directly owns 9,970 shares of Common Stock, which includes 9,491 shares issuable upon settlement of restricted stock units.
• Additionally, 80,115 shares are indirectly owned by The Jeffrey W. Dunn Living Trust Dated May 17, 2012.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this as a neutral event. 'Sell to cover' transactions are routine for equity compensation and do not reflect a discretionary decision by the insider regarding the company's value or future prospects.

Future Outlook

This Form 4 filing does not contain any forward-looking statements or guidance regarding the company's future performance or strategic direction.

Management Comments

• The sale reported on this Form 4 represents shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units.
• The sale satisfies the tax withholding obligations to be funded by a 'sell to cover' transaction and does not represent a discretionary trade by the Reporting Person.

Industry Context

StockSavvy.ai notes that 'sell to cover' transactions are a common and routine occurrence for executives and directors receiving equity compensation. These sales are typically pre-arranged under Rule 10b5-1 plans to manage tax liabilities upon the vesting of restricted stock units and are generally not indicative of management's sentiment towards the company's future prospects, unlike discretionary open-market sales.

Stakeholder Impact

• Shareholders: Minimal impact, as the sale is small, non-discretionary, and for tax purposes, not signaling a change in confidence.
• Employees: No direct impact mentioned.

Key Dates

Recommendation

The reported transaction is a non-discretionary 'sell to cover' sale to satisfy tax obligations related to restricted stock unit vesting. This type of insider transaction is routine and does not typically signal a change in the company's fundamentals or the insider's long-term view. Therefore, it provides no new information to warrant a change in investment recommendation, suggesting a 'hold' position is appropriate based solely on this filing.

Keywords

SIBN, SI-BONE, Form 4, Insider Transaction, Stock Sale, Director, Jeffrey W. Dunn, Restricted Stock Units, Tax Withholding, 10b5-1 Plan