PETER Y CHUNG
CIK 1239366 · last filed 2026-05-18
PETER Y CHUNG is a corporate insider who has filed 74 SEC Form 4 insider transactions across 8 companies since 2007. The most recent filing shows the insider sold $16.4M of MTSI on May 18, 2026. Across all open-market trades the lifetime net is −$1.62B, making them a net seller over the disclosed history. Current disclosed insider exposure totals $9.2M across reported positions.
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
$9.16M
8
74
-$1.62B
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| MTSI | Director | 6,781 | $379.87 | $2.58M | -$395.70M | 27 | 2026-05-18 |
| ATEN | Director | 207,298 | $31.76 | $6.58M | -$88.78M | 19 | 2026-04-24 |
| Acacia Communications, Inc. (ACIA) Delisted | Director | 14,600 | — | — | -$164.15M | 7 | 2019-05-17 |
| Casa Systems Inc (CASA) Delisted | Director | 34,124,480 | $0.04 | $1.19M | -$235.88M | 1 | 2018-04-30 |
| Ubiquiti Inc. (UBNT) Delisted | Director | 4,822,815 | — | — | -$738.25M | 10 | 2013-09-16 |
| NightHawk Radiology Holdings Inc (NHWK) Delisted | Director | 0 | $0.41 | $0 | $0 | 7 | 2010-12-23 |
| SeaBright Holdings, Inc. (SBX) Delisted | Director | 23,096 | — | — | $0 | 1 | 2009-05-21 |
| SeaBright Holdings, Inc. (SEAB) Delisted | Director | 18,611 | — | — | $0 | 1 | 2008-05-22 |
Recent Filings
74 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-05-18 | MTSI | Sell (S) | −43,268 | -$16.36M | EDGAR |
| 2026-04-24 | ATEN | Grant (A) | +7,233 | $0 | EDGAR |
| 2026-03-09 | MTSI | Grant (A) | +776 | $0 | EDGAR |
| 2025-04-18 | ATEN | Grant (A) | +12,698 | $0 | EDGAR |
| 2025-03-07 | MTSI | Grant (A) | +1,623 | $0 | EDGAR |
| 2024-11-18 | ATEN | Mixed | −353,320 | -$5.57M | EDGAR |
| 2024-11-15 | ATEN | Sell (S) | −78,479 | -$1.30M | EDGAR |
| 2024-05-22 | ATEN | Sell (S) | −3,296,047 | -$50.76M | EDGAR |
| 2024-05-10 | ATEN | Grant (A) | +12,903 | $0 | EDGAR |
| 2024-03-11 | MTSI | Grant (A) | +2,138 | $0 | EDGAR |