Donghyun Thomas Hwang, SVP of Global Sales at MACOM Technology Solutions Holdings, Inc., filed a Form 4 on October 27, 2026, disclosing the withholding of 246 shares of common stock on October 23, 2026, to cover tax obligations upon the vesting of restricted stock units.

Key Highlights

  • Reporting person: Donghyun Thomas Hwang, SVP, Global Sales at MACOM Technology Solutions Holdings, Inc. (NASDAQ:MTSI)
  • Transaction type: 246 shares of common stock disposed of (transaction code F) on October 23, 2026
  • Price per share: $236.24
  • Purpose: Shares withheld by the issuer to satisfy tax withholding obligations upon RSU vesting on October 23, 2026
  • Beneficial ownership following transaction: 30,949 shares of common stock held directly
  • Filing date: October 27, 2026

RSU Vesting Triggers Share Withholding for Hwang at MACOM Technology

According to the Form 4 filed with the U.S. Securities and Exchange Commission, Donghyun Thomas Hwang, who serves as SVP, Global Sales at MACOM Technology Solutions Holdings, Inc. (NASDAQ:MTSI), reported a single non-derivative transaction dated October 23, 2026. The transaction involved the disposal of 246 shares of common stock at a price of $236.24 per share under transaction code F.

The filing's footnote states that the shares were "withheld by the Issuer to satisfy the Reporting Person's tax withholding obligations in connection with the vesting of restricted stock units on October 23, 2026." This type of transaction reflects an automatic share reduction at vesting rather than an open-market sale initiated by the reporting person. Following the reported transaction, Hwang directly beneficially owned 30,949 shares of MACOM common stock, according to the filing.

The Form 4 was signed by Ambra R. Roth as Attorney-in-Fact on October 27, 2026, and filed on the same date. No derivative securities transactions were reported in Table II of the filing. The form was filed by one reporting person, and the transaction was not indicated as being made pursuant to a Rule 10b5-1(c) trading plan.

What Was Disclosed

Hwang's Form 4 disclosed a single disposition of 246 shares of MACOM Technology Solutions Holdings common stock at $236.24 per share on October 23, 2026, representing shares withheld for tax purposes upon RSU vesting, leaving him with 30,949 directly held shares.