Peter Y. Chung is Director at MACOM Technology Solutions Holdings, Inc. (MTSI). They have made 33 open-market trades across 7 companies since 2006, most recently 2026-05-14.
CIK 0001239366
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 33 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| MTSI | SELL | 2026-05-14 | 2026-05-18 | $378.20 | $16.4M | +5.0% | +5.4% | -5.7% |
| ATEN | SELL | 2024-11-14 | 2024-11-18 | $16.36 | $777K | +5.4% | +13.2% | +33.9% |
| ATEN | SELL | 2024-11-13 | 2024-11-15 | $16.59 | $2.6M | +3.9% | +16.5% | +31.6% |
| ATEN | SELL | 2024-05-20 | 2024-05-22 | $15.40 | $101.5M | -6.8% | -10.1% | -13.5% |
| ATEN | SELL | 2022-11-15 | 2022-11-17 | $17.20 | $25.8M | +2.8% | -6.0% | -17.9% |
| MTSI | SELL | 2022-08-08 | 2022-08-10 | $59.00 | $50.2M | -3.2% | -4.7% | +10.9% |
| ATEN | SELL | 2021-12-07 | 2021-12-10 | $15.05 | $10.5M | +2.8% | -3.5% | -14.1% |
| MTSI | SELL | 2020-11-11 | 2020-11-13 | $42.47 | $35.7M | +5.3% | +19.5% | +64.1% |
| ACIA | SELL | 2019-02-26 | 2019-02-28 | $52.25 | $135.9M | +0.8% | +9.2% | -12.2% |
| CASA | SELL | 2018-04-30 | 2018-04-30 | $25.00 | $117.9M | -4.0% | -19.1% | -38.2% |
| ACIA | SELL | 2017-03-09 | 2017-03-13 | $50.25 | $62.8M | +10.3% | +6.1% | -10.5% |
| MTSI | SELL | 2017-02-02 | 2017-02-06 | $46.55 | $111.9M | -0.8% | -3.2% | -2.6% |
| ACIA | SELL | 2016-10-13 | 2016-10-14 | $96.50 | $33.4M | -4.9% | -26.7% | -33.1% |
| MTSI | SELL | 2016-05-02 | 2016-05-04 | $40.00 | $56.0M | -3.9% | -8.1% | -4.1% |
| MTSI | SELL | 2016-02-25 | 2016-02-29 | $36.00 | $32.4M | +7.3% | +13.3% | -6.7% |
| MTSI | SELL | 2016-01-28 | 2016-02-01 | $37.70 | $203.6M | -10.7% | +3.3% | +6.6% |
| MTSI | SELL | 2015-05-29 | 2015-06-02 | $38.32 | $1.3M | -10.2% | -1.7% | -1.7% |
| MTSI | SELL | 2015-02-11 | 2015-02-11 | $28.58 | $63.9M | -10.2% | -1.7% | -1.7% |
| UBNT | SELL | 2013-09-11 | 2013-09-16 | $33.00 | $42.9M | -11.9% | -3.0% | -3.0% |
| UBNT | SELL | 2013-09-11 | 2013-09-13 | $33.00 | $429.0M | -11.9% | -3.0% | -3.0% |
| UBNT | SELL | 2013-09-04 | 2013-09-06 | $31.41 | $78.5M | -11.9% | -3.0% | -3.0% |
| UBNT | SELL | 2013-06-13 | 2013-06-17 | $16.00 | $8.5M | -11.9% | -3.0% | -3.0% |
| UBNT | SELL | 2013-06-04 | 2013-06-06 | $16.00 | $96.0M | -11.9% | -3.0% | -3.0% |
| UBNT | SELL | 2013-03-04 | 2013-03-06 | $13.31 | $13.3M | -11.9% | -3.0% | -3.0% |
| UBNT | SELL | 2012-11-29 | 2012-12-03 | $11.55 | $11.6M | -11.9% | -3.0% | -3.0% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.
| SEAB |
| 23,096 |
| — |
| Total | $536.6M |
Shares reported on the most recent Form 4, priced at the 2026-05-18 close. 3 holdings could not be priced and are excluded from the total.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.