As of March 23, 2026, the three largest insider holders of MTSI are John L Ocampo (Director, 8.49Mn shares), Susan Ocampo (TenPercentOwner, 3.59Mn shares), Stephen G Daly (President And Ceo, 54.22K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| John L Ocampo | 0 | 8,493,040 | 22 Nov, 2023 | |
| Susan Ocampo | 0 | 3,585,430 | 26 Feb, 2026 | |
| Stephen G Daly | President And Ceo | 54,217 | 0 | 03 Dec, 2025 |
| John Kober | Senior Vp And Cfo | 48,508 | 0 | 19 Feb, 2026 |
| Donghyun Thomas Hwang | Svp, Global Sales | 38,604 | 0 | 04 Feb, 2026 |
| Lunsen Gil J Van | 37,806 | 0 | 08 Mar, 2022 | |
| Wayne Mack Struble | Svp, Advanced Semiconductor | 29,384 | 0 | 10 Nov, 2025 |
| Charles R Bland | 15,138 | 0 | 10 Mar, 2026 | |
| Geoffrey G Ribar | 14,186 | 0 | 10 Mar, 2026 | |
| Robert Dennehy | Senior Vp And Coo | 12,864 | 0 | 02 Mar, 2026 |
| Ambra R. Roth | Svp, Gc And Secretary | 9,837 | 0 | 21 Nov, 2025 |
| John Ritchie | 9,466 | 0 | 10 Mar, 2026 | |
| Jihye Whang Rosenband | 7,165 | 0 | 10 Mar, 2026 | |
| Murugesan Shanmugaraj | 6,614 | 0 | 10 Mar, 2026 | |
| John L Ocampo | 5,012 | 0 | 07 Mar, 2023 | |
| Douglas J Carlson | Svp, Technology | 4,893 | 0 | 01 Dec, 2023 |
| Bryan Ingram | 1,747 | 0 | 10 Mar, 2026 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 06 Mar, 2026 | Geoffrey G Ribar | Common Stock | A | 776 | $0.00 | 14,186 | D | A |
| 06 Mar, 2026 | Charles R Bland | Common Stock | A | 776 | $0.00 | 15,138 | D | A |
| 06 Mar, 2026 | Murugesan Shanmugaraj | Common Stock | A | 776 | $0.00 | 6,614 | D | A |
| 06 Mar, 2026 | Bryan Ingram | Common Stock | A | 776 | $0.00 | 1,747 | D | A |
| 06 Mar, 2026 | Jihye Whang Rosenband | Common Stock | A | 776 | $0.00 | 7,165 | D | A |
| 06 Mar, 2026 | John Ritchie | Common Stock | A | 776 | $0.00 | 9,466 | D | A |
| 26 Feb, 2026 | Robert Dennehy | Common Stock | D | 971 | $240.40 | 30,291 | D | S |
| 26 Feb, 2026 | Robert Dennehy | Common Stock | D | 300 | $241.70 | 29,991 | D | S |
| 26 Feb, 2026 | Robert Dennehy | Common Stock | D | 3,200 | $242.96 | 26,791 | D | S |
| 26 Feb, 2026 | Robert Dennehy | Common Stock | D | 4,780 | $243.95 | 22,011 | D | S |
| 26 Feb, 2026 | Robert Dennehy | Common Stock | D | 4,100 | $244.85 | 17,911 | D | S |
| 26 Feb, 2026 | Robert Dennehy | Common Stock | D | 2,576 | $246.70 | 15,335 | D | S |
| 26 Feb, 2026 | Robert Dennehy | Common Stock | D | 400 | $248.97 | 14,935 | D | S |
| 26 Feb, 2026 | Robert Dennehy | Common Stock | D | 500 | $250.52 | 14,435 | D | S |
| 26 Feb, 2026 | Robert Dennehy | Common Stock | D | 1,571 | $253.58 | 12,864 | D | S |
| 25 Feb, 2026 | Geoffrey G Ribar | Common Stock | D | 2,244 | $253.59 | 13,410 | D | S |
| 25 Feb, 2026 | John Ritchie | Common Stock | D | 1,573 | $255.00 | 8,690 | D | S |
| 24 Feb, 2026 | Susan Ocampo | Common Stock | D | 53,509 | $250.08 | 4,021,658 | I | S |
| 25 Feb, 2026 | Susan Ocampo | Common Stock | D | 41,012 | $250.39 | 3,980,646 | I | S |
| 25 Feb, 2026 | Susan Ocampo | Common Stock | D | 2,323 | $251.16 | 3,978,323 | I | S |