Ambra R. Roth, SVP, General Counsel and Secretary of MACOM Technology Solutions Holdings, Inc., filed a Form 4 on November 9, 2026, disclosing a series of share acquisitions, tax-withholding disposals, and open-market sales of common stock between November 5 and November 9, 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 $0 cost to Roth.
  • Tax withholding: 15,688 shares were withheld by the issuer on November 5, 2026, at $190.35 per share to cover tax obligations related to the PRSU settlement.
  • Additional withholding: 541 shares were withheld on November 6, 2026, at $210.98 per share for taxes related to the vesting of restricted stock units on November 8, 2026.
  • 10b5-1 plan sales: 9,317 shares were sold on November 9, 2026, across multiple transactions at weighted-average prices ranging from $212.43 to $230.01, pursuant to a sales plan adopted May 21, 2026.
  • Remaining ownership: Following all reported transactions, Roth directly held 15,666 shares of common stock.
  • Issuer and exchange: MACOM Technology Solutions Holdings, Inc. trades as NASDAQ:MTSI.

Roth's PRSU Settlement and Subsequent 10b5-1 Sales at MACOM

According to the filing, Ambra R. Roth received 31,387 shares on November 5, 2026, upon the vesting and settlement of performance-based restricted stock units previously granted under an equity compensation plan maintained by the issuer. The acquisition was recorded at a price of $0. On the same date, the issuer withheld 15,688 of those shares at $190.35 per share to satisfy Roth's tax withholding obligations connected to the PRSU settlement, the filing disclosed. A further 541 shares were withheld on November 6, 2026, at $210.98 per share, covering tax obligations from the vesting of restricted stock units on November 8, 2026.

Beginning November 9, 2026, the filing reports that Roth sold a total of 9,317 shares across fourteen separate transactions. The sales were executed under a written plan adopted on May 21, 2026, and described as intended to comply with Rule 10b5-1 under the Securities Exchange Act of 1934. Transaction prices ranged from a weighted average of $212.43 for the smallest lot of 40 shares up to a weighted average of $230.01 for a lot of 2,360 shares. For several of these transactions, the filing notes that the prices listed are weighted averages and that shares within each lot were sold in multiple sub-transactions across narrower price ranges, with full details available upon request to the issuer, any shareholder, or SEC staff.

After all transactions reported in the filing, Roth's direct beneficial ownership of MACOM common stock stood at 15,666 shares, according to the filing.

What Was Disclosed

The filing disclosed PRSU vesting, two tax-withholding share disposals, and fourteen open-market sales by MACOM's SVP, General Counsel and Secretary between November 5 and November 9, 2026, leaving her with 15,666 directly held shares.