The Michael Pisetsky Separate Property Trust filed a Form 144 notice of proposed sale of SI-BONE, Inc. common stock on November 4, 2026, disclosing plans to sell 36,241 shares through Morgan Stanley Smith Barney LLC.

Key Highlights

  • Proposed sale size: 36,241 shares of SI-BONE, Inc. common stock with an aggregate market value of $861,448.57, according to the filing.
  • Approximate sale date: November 4, 2026, to be executed through Morgan Stanley Smith Barney LLC Executive Financial Services.
  • Source of shares: The filing states shares were acquired via restricted stock units (23,892 shares, acquired July 23, 2018) and exercise of stock options (12,349 shares, acquired November 4, 2026).
  • 10b5-1 plan: The filing indicates a written trading plan was adopted on June 13, 2025.
  • Prior three-month sales: The trust and Michael Andrew Pisetsky sold a combined 36,523 shares in three transactions between August 17, 2026, and October 29, 2026, for total gross proceeds of $782,072.55.
  • Shares outstanding: The filing lists 45,113,087 shares of SI-BONE common stock outstanding.

Pisetsky Separate Property Trust Discloses Planned SI-BONE Stock Sale Under 10b5-1 Plan

According to the Form 144 filing submitted November 4, 2026, the Michael Pisetsky Separate Property Trust, identified as having an officer relationship to SI-BONE, Inc. (NASDAQ:SIBN), has provided notice of a proposed sale of 36,241 shares of the company's common stock. The aggregate market value of the securities to be sold is listed as $861,448.57. The designated broker for the transaction is Morgan Stanley Smith Barney LLC Executive Financial Services, located at 1 New York Plaza, 8th Floor, New York, NY 10004.

The filing discloses two separate tranches of shares underlying the proposed sale. A block of 23,892 shares was acquired through restricted stock units from the issuer on July 23, 2018, while 12,349 shares were acquired through the exercise of stock options on November 4, 2026, with cash as the form of payment. The filing's remarks section states that "the securities to be sold were acquired upon the vesting of restricted stock units during the period of 07/23/2018 through 1/1/2026."

The filing also reports sales activity during the three months preceding this notice. The Michael Pisetsky Separate Property Trust sold 29,665 shares on October 29, 2026, generating gross proceeds of $655,743.37 under a 10b5-1 plan. Michael Andrew Pisetsky separately sold 3,133 shares on October 2, 2026, for gross proceeds of $56,918.15, and 3,725 shares on August 17, 2026, for gross proceeds of $69,411.03. The filing identifies the 10b5-1 plan adoption date as June 13, 2025. SI-BONE, Inc. is headquartered at 88 West Plumeria Drive, San Jose, California 95134.

What Was Disclosed

The Michael Pisetsky Separate Property Trust filed a Form 144 notice disclosing a proposed sale of 36,241 SI-BONE common shares valued at $861,448.57, sourced from restricted stock units and stock option exercises, to be executed under a 10b5-1 plan adopted June 13, 2025.