Donghyun Thomas Hwang, SVP of Global Sales at MACOM Technology Solutions Holdings, Inc. (NASDAQ:MTSI), filed a Form 4 on November 9, 2026, disclosing PRSU vesting, share acquisition, and tax-related share withholding transactions dated November 5 and November 6, 2026.

Key Highlights

  • PRSU vesting: 31,387 performance-based restricted stock units vested and settled in shares of Common Stock on November 5, 2026, at a price of $0, according to the filing.
  • Tax withholding, November 5: 13,638 shares were withheld by the issuer to satisfy tax withholding obligations in connection with the November 5, 2026 PRSU vesting, at $190.35 per share.
  • Tax withholding, November 6: An additional 472 shares were withheld at $210.98 per share to cover tax obligations connected to restricted stock unit vesting on November 8, 2026.
  • Resulting ownership: Following all reported transactions, Hwang directly owned 47,997 shares of Common Stock, as stated in the filing.
  • Role: The reporting person is identified in the filing as SVP, Global Sales of MACOM Technology Solutions Holdings, Inc.

PRSU Vesting and Share Withholding Details for Hwang at MACOM

According to the Form 4 filed with the SEC on November 9, 2026, Donghyun Thomas Hwang, SVP of Global Sales at MACOM Technology Solutions Holdings, Inc. (NASDAQ:MTSI), reported three transactions in the company's Common Stock. The first transaction, dated November 5, 2026, reflects the acquisition of 31,387 shares resulting from the vesting and settlement of performance-based restricted stock units previously granted under an equity compensation plan maintained by the issuer. The filing notes that these PRSUs were acquired at a price of $0.

On the same date, November 5, 2026, the filing reports that 13,638 shares were disposed of with transaction code "F," at a price of $190.35 per share. The filing states these shares were "withheld by the Issuer to satisfy the Reporting Person's tax withholding obligations in connection with the vesting and settling of PRSUs." Following these two transactions, Hwang's direct beneficial ownership stood at 48,469 shares.

A third transaction, dated November 6, 2026, also coded "F," reports the disposal of 472 shares at $210.98 per share. The filing states these shares were withheld to cover tax obligations "in connection with the vesting of restricted stock units on November 8, 2026." After this transaction, the filing reports Hwang's direct beneficial ownership at 47,997 shares of Common Stock. The Form 4 was signed by Ambra R. Roth as Attorney-in-Fact on November 9, 2026.

What Was Disclosed

The filing disclosed the vesting of 31,387 PRSUs, two separate tax-related share withholdings totaling 14,110 shares at prices of $190.35 and $210.98, and a resulting direct beneficial ownership of 47,997 shares of MACOM Common Stock for Hwang.