Robert Dennehy, Senior Vice President and Chief Operating Officer of MACOM Technology Solutions Holdings, Inc., filed a Form 4 on November 9, 2026, disclosing changes in his beneficial ownership of common stock tied to the vesting of performance-based restricted stock units and restricted stock units on November 5 and November 6, 2026.

Key Highlights

  • PRSU vesting: 33,640 performance-based restricted stock units vested and settled in shares of common stock on November 5, 2026, at a price of $0, per the filing.
  • Tax withholding, Nov. 5: 14,707 shares were withheld by the issuer to satisfy tax withholding obligations in connection with the PRSU vesting on November 5, 2026, at $190.35 per share.
  • Tax withholding, Nov. 6: 472 shares were withheld by the issuer to satisfy tax withholding obligations in connection with the vesting of restricted stock units, at $210.98 per share.
  • Resulting ownership: Following all reported transactions, Dennehy directly beneficially owned 32,822 shares of common stock, according to the filing.
  • Role: The reporting person is identified in the filing as Senior VP and COO of MACOM Technology Solutions Holdings, Inc., traded on NASDAQ:MTSI.

Dennehy's PRSU Settlement and Share Withholding Details

According to the Form 4 filed with the SEC on November 9, 2026, Robert Dennehy reported three transactions in MACOM Technology Solutions Holdings, Inc. common stock. The first transaction, dated November 5, 2026, reflects the acquisition of 33,640 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 states that these PRSUs settled at a price of $0, bringing Dennehy's directly held shares to 48,001 immediately following that event.

Also on November 5, 2026, the filing reports that 14,707 shares were disposed of under transaction code F, meaning they were withheld by the issuer to satisfy Dennehy's tax withholding obligations arising from the PRSU vesting, at a price of $190.35 per share. This reduced his direct holdings to 33,294 shares. A second withholding transaction occurred on November 6, 2026, when 472 additional shares were withheld at $210.98 per share in connection with the vesting of restricted stock units, leaving Dennehy with a reported direct beneficial ownership of 32,822 shares following all reported transactions.

The form was signed by Ambra R. Roth as Attorney-in-Fact on November 9, 2026. All transactions are reported as direct ownership. No derivative securities transactions were reported in Table II of the filing.

What Was Disclosed

The filing disclosed three non-derivative transactions by MACOM COO Robert Dennehy: the vesting of 33,640 PRSUs on November 5, 2026, followed by two separate share withholdings for tax purposes on November 5 and November 6, 2026, resulting in direct beneficial ownership of 32,822 shares.