Michael A. Pisetsky, SVP of Operations and Administration and Chief Legal Officer of SI-BONE, Inc., filed an amended Form 4/A on November 9, 2026, disclosing transactions in SI-BONE common stock executed on November 4, 2026, pursuant to a Rule 10b5-1 trading plan.

Key Highlights

  • Exercise transactions: Pisetsky acquired 9,347 shares via phantom stock conversion and 3,002 shares via stock option exercise, both at a conversion/exercise price of $22, on November 4, 2026.
  • Direct account sale: 12,349 shares of common stock were sold directly at a weighted average price of $25.0776, with individual trades ranging from $25.00 to $25.25.
  • Trust account sale: 23,892 shares held by the Michael Pisetsky Sep Prop Tr were sold at a weighted average price of $24.7849, with individual trades ranging from $24.00 to $24.99.
  • Post-transaction direct holdings: Following the reported transactions, Pisetsky directly beneficially owned 164,444 shares, including 124,139 shares issuable upon settlement of restricted stock units.
  • Post-transaction indirect holdings: 40,167 shares remained held indirectly through the Michael Pisetsky Sep Prop Tr following the sales.
  • 10b5-1 plan: According to the filing, the sales were effected pursuant to a 10b5-1 trading plan dated June 13, 2025.
  • Remaining derivative securities: After the transactions, Pisetsky held 9,348 phantom stock units and 3,003 stock options, both with a conversion/exercise price of $22, expiring January 15, 2029.

Pisetsky's November 4 Transactions in SI-BONE Common Stock

According to the amended Form 4/A filed with the SEC, Michael A. Pisetsky, identified as SVP, Ops and Administration and Chief Legal Officer of SI-BONE, Inc. (NASDAQ:SIBN), reported four transactions in SI-BONE common stock all dated November 4, 2026. The filing amends an original Form 4 filed on November 6, 2026. The transactions were executed under a Rule 10b5-1 trading plan established on June 13, 2025, as the filing discloses.

Two of the transactions involved the acquisition of shares through derivative security conversions. Pisetsky acquired 9,347 shares through the exercise of phantom stock units and 3,002 shares through stock option exercises, both at a price of $22 per share. The filing notes that shares subject to these options vest in equal monthly installments over four years from the vesting commencement date, subject to continued service. Following those acquisitions, two sale transactions occurred: 12,349 shares were disposed of directly at a weighted average price of $25.0776, and 23,892 shares held indirectly through the Michael Pisetsky Sep Prop Tr were disposed of at a weighted average price of $24.7849.

The filing notes that both sales were executed across multiple trades. The direct sale involved trades ranging from $25.00 to $25.25, and the trust sale involved trades ranging from $24.00 to $24.99. After all reported transactions, direct beneficial ownership stood at 164,444 shares, of which 124,139 represent shares issuable on settlement of restricted stock units, and indirect beneficial ownership through the trust stood at 40,167 shares.

What Was Disclosed

The amended Form 4/A disclosed that SI-BONE officer Michael A. Pisetsky exercised derivative securities and sold a combined 36,241 shares of common stock on November 4, 2026, pursuant to a pre-established 10b5-1 trading plan, with resulting direct and indirect beneficial ownership positions also reported.