The Michael Pisetsky Separate Property Trust filed a Form 144 notice of proposed sale with the SEC on October 29, 2026, covering 29,665 shares of SI-BONE, Inc. common stock valued at approximately $647,586.95.

Key Highlights

  • Proposed sale: 29,665 shares of SI-BONE, Inc. common stock with an aggregate market value of $647,586.95, according to the filing.
  • Seller: Michael Pisetsky Separate Property Trust, with Michael Andrew Pisetsky listed as an officer of the issuer.
  • Approximate sale date: October 29, 2026, through Morgan Stanley Smith Barney LLC Executive Financial Services on the NASDAQ exchange.
  • Acquisition source: Securities were acquired as restricted stock units from the issuer, with an acquisition date of July 23, 2018 and amount of 29,665 shares.
  • 10b5-1 plan: The filing indicates a written trading plan or instruction was adopted on June 13, 2025.
  • Recent sales in prior 3 months: 3,133 shares sold on October 2, 2026 for gross proceeds of $56,918.15, and 3,725 shares sold on August 17, 2026 for gross proceeds of $69,411.03.
  • Total shares outstanding: 44,818,575 shares of SI-BONE common stock, as reported in the filing.

SI-BONE Officer-Linked Trust Files Rule 144 Sale Notice for October 2026

The Michael Pisetsky Separate Property Trust, affiliated with Michael Andrew Pisetsky, an officer of SI-BONE, Inc. (NASDAQ:SIBN), filed a Form 144 notice of proposed sale on October 29, 2026. The notice covers 29,665 shares of the company's common stock, with an aggregate market value reported as $647,586.95. The shares are proposed to be sold through Morgan Stanley Smith Barney LLC Executive Financial Services on NASDAQ.

According to the filing, the securities to be sold were originally acquired as restricted stock units from the issuer. The filing states that the securities "were acquired upon the vesting of restricted stock units during the period of 07/23/2018 through 10/01/2025," with the acquisition date listed as July 23, 2018 and 29,665 units recorded. The filing notes that a written trading plan or instruction under Rule 10b5-1 was adopted on June 13, 2025.

The filing also discloses sales of SI-BONE common stock by Michael Andrew Pisetsky during the past three months. On October 2, 2026, 3,133 shares were sold for gross proceeds of $56,918.15, and on August 17, 2026, 3,725 shares were sold for gross proceeds of $69,411.03. SI-BONE, Inc. is headquartered at 471 El Camino Real, Suite 101, Santa Clara, California 95050, and had 44,818,575 shares of common stock outstanding as reported in this filing.

What Was Disclosed

A Form 144 notice was filed on October 29, 2026, by the Michael Pisetsky Separate Property Trust, disclosing a proposed sale of 29,665 SI-BONE common shares valued at $647,586.95, with shares originating from restricted stock unit vesting and a 10b5-1 plan adopted June 13, 2025.