Hsing Michael
CEO
In the last 12 months, Hsing Michael filed 96 SEC Form 4 transactions across 1 issuer — $0 in open-market purchases and $331.2M in open-market sales. 0% of these transactions were executed under a pre-scheduled Rule 10b5-1 trading plan.
- $0Open-market buys (1y)
- $331.2MOpen-market sells (1y)
- 96Transactions filed
- 1Distinct issuers
- 0%Under Rule 10b5-1
- 2026-05-18Latest filing
Issuers Filed For By open-market buy volume
Recent Form 4 Filings Most recent 75 of 96 (1-year window)
| Date | Ticker | Company | Type | SEC Code | Value | Shares | Price |
|---|---|---|---|---|---|---|---|
| 2026-05-18 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | S | $5.0M | 3,424 | $1462.6 |
| 2026-05-18 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | S | $8.5M | 5,819 | $1467.6 |
| 2026-05-18 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | S | $7.4M | 5,049 | $1472.8 |
| 2026-05-18 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | S | $6.0M | 4,082 | $1477.0 |
| 2026-05-18 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | S | $8.5M | 5,737 | $1482.5 |
| 2026-05-18 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | S | $9.9M | 6,688 | $1486.8 |
| 2026-05-18 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | S | $1.3M | 862 | $1491.5 |
| 2026-05-18 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | S | $911.7K | 608 | $1499.5 |
| 2026-05-18 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | S | $4.4M | 2,929 | $1503.0 |
| 2026-05-18 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | S | $5.7M | 3,769 | $1507.7 |
| 2026-05-18 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | S | $833.7K | 551 | $1513.1 |
| 2026-05-18 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | S | $534.4K | 352 | $1518.2 |
| 2026-05-18 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | S | $197.8K | 130 | $1521.4 |
| 2026-02-12 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $14.7M | 12,731 | $1155.7 |
| 2026-02-12 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $5.8M | 4,992 | $1159.8 |
| 2026-02-12 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $4.7M | 4,001 | $1164.9 |
| 2026-02-12 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $2.4M | 2,076 | $1168.8 |
| 2026-02-12 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $234.7K | 200 | $1173.4 |
| 2026-02-12 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $566.8K | 480 | $1180.8 |
| 2026-02-12 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $190.1K | 160 | $1188.2 |
| 2026-02-12 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $716.6K | 600 | $1194.3 |
| 2026-02-12 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $1.7M | 1,440 | $1200.8 |
| 2026-02-12 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $4.4M | 3,640 | $1205.8 |
| 2026-02-12 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $1.5M | 1,240 | $1210.1 |
| 2026-02-12 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $1.8M | 1,440 | $1217.1 |
| 2026-02-11 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $420.6K | 363 | $1158.7 |
| 2026-02-11 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $1.6M | 1,366 | $1163.7 |
| 2026-02-11 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $1.8M | 1,533 | $1167.6 |
| 2026-02-11 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $2.3M | 1,987 | $1172.9 |
| 2026-02-11 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $3.3M | 2,799 | $1177.7 |
| 2026-02-11 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $1.8M | 1,542 | $1182.8 |
| 2026-02-11 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $2.5M | 2,104 | $1188.2 |
| 2026-02-11 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $7.3M | 6,079 | $1192.7 |
| 2026-02-11 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $17.5M | 14,578 | $1197.2 |
| 2026-02-11 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $780.3K | 649 | $1202.3 |
| 2026-02-10 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $4.9M | 4,302 | $1132.0 |
| 2026-02-10 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $7.2M | 6,325 | $1136.8 |
| 2026-02-10 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $18.4M | 16,080 | $1141.9 |
| 2026-02-10 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $4.4M | 3,864 | $1145.9 |
| 2026-02-10 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $1.4M | 1,215 | $1151.1 |
| 2026-02-10 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $801.5K | 694 | $1155.0 |
| 2026-02-10 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $418.1K | 360 | $1161.4 |
| 2026-02-10 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $1.0M | 880 | $1176.0 |
| 2026-02-10 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $335.2K | 280 | $1197.3 |
| 2026-02-06 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $64.3M | 54,923 | $1171.2 |
| 2026-02-03 | MPWR | MONOLITHIC POWER SYSTEMS INC | Grant | — | $0 | 136,825 | $0.0 |
| 2025-12-09 | MPWR | MONOLITHIC POWER SYSTEMS INC | Grant | — | $0 | 12,337 | $0.0 |
| 2025-11-12 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $385.9K | 403 | $957.6 |
| 2025-11-12 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $2.7M | 2,799 | $958.3 |
| 2025-11-12 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $422.1K | 440 | $959.4 |
| 2025-11-12 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $387.1K | 403 | $960.5 |
| 2025-11-12 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $1.8M | 1,904 | $961.6 |
| 2025-11-12 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $2.7M | 2,817 | $962.6 |
| 2025-11-12 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $3.4M | 3,552 | $963.5 |
| 2025-11-12 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $3.1M | 3,264 | $964.5 |
| 2025-11-12 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $5.4M | 5,619 | $965.5 |
| 2025-11-12 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $6.3M | 6,562 | $966.5 |
| 2025-11-12 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $2.9M | 3,024 | $967.4 |
| 2025-11-12 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $2.0M | 2,072 | $968.4 |
| 2025-11-12 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $945.4K | 975 | $969.6 |
| 2025-11-12 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $706.4K | 728 | $970.3 |
| 2025-11-12 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $57.3K | 59 | $971.8 |
| 2025-11-12 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $448.5K | 461 | $972.8 |
| 2025-11-12 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $290.2K | 298 | $973.7 |
| 2025-11-12 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $620.1K | 633 | $979.6 |
| 2025-11-12 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $967.3K | 987 | $980.1 |
| 2025-11-11 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $76.1K | 80 | $951.7 |
| 2025-11-11 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $1.4M | 1,516 | $952.6 |
| 2025-11-11 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $2.8M | 2,927 | $953.7 |
| 2025-11-11 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $7.6M | 7,934 | $954.6 |
| 2025-11-11 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $3.9M | 4,056 | $955.5 |
| 2025-11-11 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $762.3K | 797 | $956.5 |
| 2025-11-11 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $976.9K | 1,020 | $957.7 |
| 2025-11-11 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $2.4M | 2,500 | $958.6 |
| 2025-11-11 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $3.8M | 4,010 | $959.5 |
Showing the most recent 75 of 96 transactions.
Methodology & FAQ
How These Filings Are Sourced
All transactions on this page are sourced directly from SEC EDGAR. A complete description of the open-market vs grant distinction, the Rule 10b5-1 plan-reference heuristic, and the per-insider name matching is documented in the Methodology.
What companies does Hsing Michael file Form 4 disclosures for?
Hsing Michael has filed SEC Form 4 transactions for 1 issuer in the last 12 months: MONOLITHIC POWER SYSTEMS INC (MPWR).
What does the 10b5-1 badge mean on these transactions?
Rule 10b5-1 is an SEC rule that lets insiders schedule trades in advance under a written plan, providing an affirmative defense against insider-trading allegations as long as the plan was adopted in good faith and not while in possession of material non-public information. Of Hsing Michael's 96 reported transactions in the last 12 months, 0 (0%) reference a 10b5-1 trading plan in the Form 4 footnotes.
Are these all the transactions Hsing Michael has executed?
This page shows SEC Form 4 transactions on record in Pactolio's tracked universe for the last 12 months. Form 4 only covers transactions in registered classes of equity at issuers where the person qualifies as an insider (officer, director, or 10% beneficial owner). Trades in funds, foreign issuers, or non-insider positions are not disclosed under Form 4 and are not included here.