CHUNG PETER Y 4

4 · MACOM Technology Solutions Holdings, Inc. · Filed Mar 9, 2026

AI-generated summary of this filing

Updated Mar 9, 2026

MACOM (MTSI) Director Peter Y. Chung Receives RSU Award

What Happened

Peter Y. Chung, a director of MACOM Technology Solutions Holdings, Inc. (MTSI), was granted 776 restricted stock units (RSUs) on March 6, 2026. The award was reported as an "A" (award/grant) transaction with an acquisition price of $0.00 (no cash paid).

Key Details

Transaction date: 2026-03-06; Form 4 filed: 2026-03-09 (timely filing).
Grant: 776 RSUs @ $0.00 (total immediate cash value = $0).
Vesting/settlement: RSUs vest on March 6, 2027 and will settle solely by delivery of the same number of common shares if Mr. Chung remains in continuous service through vesting (footnote F1).
Shares/RSUs reported as held: 50,049 shares and restricted stock units are held in Mr. Chung’s name for the benefit of Summit Partners, L.P. (footnote F2).
Voting/dispositive authority: Summit Partners, L.P., via a two-person Investment Committee (Scott C. Collins and Peter Y. Chung), has voting and dispositive authority over the reported shares/RSUs; the parties disclaim beneficial ownership except for pecuniary interest (footnote F3).
Transaction code: A = Award/Grant (not a market purchase or sale).

Context

This was a compensation award to a director (routine director equity compensation), not a market purchase or sale. The RSUs carry no immediate cash cost and will convert into shares only upon vesting next year, so they do not represent an immediate increase or decrease in market-traded shares.

Form 4

Period: 2026-03-06

Director

Transactions

Award
Common Stock
[F1][F2][F3]
2026-03-06+776→ 50,049 total(indirect: See Remarks)

Footnotes (3)

[F1]Represents restricted stock units granted to Mr. Chung as part of the director compensation program. The restricted stock units will vest on March 6, 2027, and will settle solely by delivery of an equal number of shares of Common Stock provided that Mr. Chung remains in continuous service with the Issuer through the vesting date.
[F2]The 50,049 shares and restricted stock units are held in the name of Mr. Chung, which are held for the benefit of Summit Partners, L.P.
[F3]Mr. Chung holds any Common Stock and restricted stock units for the benefit of Summit Partners, L.P. which he has empowered to determine when the underlying shares will be sold and which is entitled to the proceeds of any such sales. Summit Partners, L.P., through a two-person Investment Committee, responsible for voting and investment decisions with respect to the Issuer, currently composed of Scott C. Collins and Peter Y. Chung, has voting and dispositive authority over the shares and restricted stock units reported herein and therefore may be deemed to beneficially own such shares. Summit Partners, L.P., Mr. Collins and Mr. Chung disclaims beneficial ownership of the shares of common stock and the restricted stock units, except to the extent of their pecuniary interest therein.

Signature

Adam H. Hennessey, POA for Peter Y. Chung|2026-03-09

1 file