Mark Munch, Executive Vice President and President of Bruker Nano Inc., filed a Form 4 with the SEC on August 13, 2026, reporting the disposition of 1,619 shares of Bruker Corp common stock on August 11, 2026, to satisfy tax withholding obligations related to the vesting of restricted stock units.

Key Highlights

  • Reporting person: Mark Munch, Executive Vice President and President of Bruker Nano Inc.
  • Transaction date: August 11, 2026
  • Shares disposed: 1,619 shares of Bruker Corp common stock, transaction code F
  • Price per share: $57.02
  • Purpose: Shares withheld by the company to satisfy tax withholding obligations in connection with vesting of previously granted restricted stock units
  • Remaining beneficial ownership: 123,347 shares held directly following the transaction

Mark Munch RSU Tax Withholding Transaction at Bruker Corp

According to the Form 4 filed on August 13, 2026, Mark Munch reported a single non-derivative securities transaction involving Bruker Corp (NASDAQ:BRKR) common stock. The transaction, coded "F," occurred on August 11, 2026, and involved 1,619 shares disposed of at a price of $57.02 per share. The filing indicates the shares were not sold on the open market but were instead withheld by the company.

As explained in the filing's footnote, the disposition "represents shares withheld by the Company to satisfy tax withholding obligations in connection with the vesting of restricted stock units previously granted to the reporting person." This type of transaction is a standard mechanism by which companies cover the tax liability that arises when restricted stock units vest, without requiring the executive to sell shares independently.

Following this transaction, the filing reports that Munch directly holds 123,347 shares of Bruker Corp common stock. No derivative securities transactions were reported in Table II of the filing. The form was signed by Betsy Eberg as Attorney-in-Fact on August 13, 2026, and was filed as an individual, rather than a joint or group, report.

What Was Disclosed

Mark Munch, an officer of Bruker Corp, disclosed the withholding of 1,619 common shares at $57.02 each on August 11, 2026, to cover taxes on vesting restricted stock units, leaving him with 123,347 directly held shares.