Tseng Saria
EVP & General Counsel
In the last 12 months, Tseng Saria filed 73 SEC Form 4 transactions across 1 issuer — $0 in open-market purchases and $164.2M in open-market sales. 42% of these transactions were executed under a pre-scheduled Rule 10b5-1 trading plan.
- $0Open-market buys (1y)
- $164.2MOpen-market sells (1y)
- 73Transactions filed
- 1Distinct issuers
- 42%Under Rule 10b5-1
- 2026-05-27Latest filing
Issuers Filed For By open-market buy volume
Recent Form 4 Filings Most recent 73 of 73 (1-year window)
| Date | Ticker | Company | Type | SEC Code | Value | Shares | Price |
|---|---|---|---|---|---|---|---|
| 2026-05-27 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | S | $12.9M | 7,565 | $1700.0 |
| 2026-05-22 | MPWR | MONOLITHIC POWER SYSTEMS INC | Other | G | $0 | 200 | $0.0 |
| 2026-05-22 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | S | $7.9M | 5,000 | $1586.4 |
| 2026-04-08 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell 10b5-1 | S | $709.2K | 560 | $1266.5 |
| 2026-04-08 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell 10b5-1 | S | $457.3K | 360 | $1270.3 |
| 2026-04-08 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell 10b5-1 | S | $307.1K | 240 | $1279.5 |
| 2026-04-08 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell 10b5-1 | S | $154.5K | 120 | $1287.1 |
| 2026-04-08 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell 10b5-1 | S | $516.8K | 400 | $1292.1 |
| 2026-04-08 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell 10b5-1 | S | $1.0M | 800 | $1302.5 |
| 2026-04-08 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell 10b5-1 | S | $1.7M | 1,279 | $1308.3 |
| 2026-04-08 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell 10b5-1 | S | $5.6M | 4,244 | $1312.8 |
| 2026-04-08 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell 10b5-1 | S | $1.1M | 840 | $1319.3 |
| 2026-04-08 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell 10b5-1 | S | $158.6K | 120 | $1321.9 |
| 2026-04-06 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell 10b5-1 | S | $278.2K | 244 | $1140.0 |
| 2026-04-06 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell 10b5-1 | S | $636.3K | 556 | $1144.4 |
| 2026-04-06 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell 10b5-1 | S | $551.5K | 480 | $1149.0 |
| 2026-04-06 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell 10b5-1 | S | $649.4K | 560 | $1159.6 |
| 2026-04-06 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell 10b5-1 | S | $797.3K | 684 | $1165.7 |
| 2026-04-06 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell 10b5-1 | S | $2.4M | 2,036 | $1170.4 |
| 2026-04-06 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell 10b5-1 | S | $2.0M | 1,680 | $1176.3 |
| 2026-04-06 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell 10b5-1 | S | $1.6M | 1,396 | $1179.5 |
| 2026-04-01 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell 10b5-1 | S | $651.6K | 576 | $1131.2 |
| 2026-04-01 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell 10b5-1 | S | $208.3K | 184 | $1132.2 |
| 2026-04-01 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell 10b5-1 | S | $181.5K | 160 | $1134.1 |
| 2026-04-01 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell 10b5-1 | S | $213.6K | 188 | $1135.9 |
| 2026-04-01 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell 10b5-1 | S | $332.0K | 292 | $1137.0 |
| 2026-03-30 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell 10b5-1 | S | $5.2M | 5,154 | $1000.8 |
| 2026-03-30 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell 10b5-1 | S | $9.1M | 9,080 | $1005.2 |
| 2026-03-30 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell 10b5-1 | S | $3.4M | 3,360 | $1009.6 |
| 2026-03-30 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell 10b5-1 | S | $3.2M | 3,194 | $1017.2 |
| 2026-03-30 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell 10b5-1 | S | $2.3M | 2,200 | $1023.0 |
| 2026-03-30 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell 10b5-1 | S | $2.5M | 2,440 | $1029.2 |
| 2026-03-30 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell 10b5-1 | S | $171.9K | 166 | $1035.6 |
| 2026-03-30 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell 10b5-1 | S | $83.3K | 80 | $1041.1 |
| 2026-02-06 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $26.8M | 22,875 | $1171.2 |
| 2026-02-03 | MPWR | MONOLITHIC POWER SYSTEMS INC | Grant | — | $0 | 57,170 | $0.0 |
| 2025-12-24 | MPWR | MONOLITHIC POWER SYSTEMS INC | Grant | — | $0 | 1,000 | $0.0 |
| 2025-12-24 | MPWR | MONOLITHIC POWER SYSTEMS INC | Grant | — | $0 | 1,000 | $0.0 |
| 2025-11-26 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $221.5K | 240 | $922.8 |
| 2025-11-26 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $1.1M | 1,200 | $923.5 |
| 2025-11-26 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $1.2M | 1,327 | $924.3 |
| 2025-11-26 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $1.0M | 1,126 | $925.5 |
| 2025-11-26 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $9.6M | 10,360 | $926.0 |
| 2025-11-26 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $1.7M | 1,845 | $927.4 |
| 2025-11-26 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $913.7K | 984 | $928.6 |
| 2025-11-26 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $2.1M | 2,238 | $929.3 |
| 2025-11-26 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $632.7K | 680 | $930.5 |
| 2025-11-25 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $344.4K | 385 | $894.5 |
| 2025-11-25 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $1.5M | 1,625 | $895.6 |
| 2025-11-25 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $1.9M | 2,066 | $896.4 |
| 2025-11-25 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $676.7K | 754 | $897.5 |
| 2025-11-25 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $130.3K | 145 | $898.4 |
| 2025-11-25 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $287.8K | 320 | $899.4 |
| 2025-11-25 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $311.5K | 346 | $900.4 |
| 2025-11-25 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $793.4K | 880 | $901.6 |
| 2025-11-25 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $108.2K | 120 | $902.1 |
| 2025-11-25 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $144.6K | 160 | $903.5 |
| 2025-11-25 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $180.9K | 200 | $904.4 |
| 2025-11-25 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $144.9K | 160 | $905.3 |
| 2025-11-25 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $246.5K | 272 | $906.3 |
| 2025-11-25 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $9.3M | 10,200 | $907.2 |
| 2025-11-25 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $806.7K | 888 | $908.5 |
| 2025-11-25 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $505.6K | 556 | $909.4 |
| 2025-11-25 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $326.8K | 359 | $910.4 |
| 2025-11-25 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $295.5K | 324 | $911.9 |
| 2025-11-25 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $219.0K | 240 | $912.3 |
| 2025-10-30 | MPWR | MONOLITHIC POWER SYSTEMS INC | Grant | — | $59.8M | 54,543 | $1096.6 |
| 2025-10-25 | MPWR | MONOLITHIC POWER SYSTEMS INC | Grant | — | $0 | 135,520 | $0.0 |
| 2025-10-24 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $1.4M | 1,300 | $1087.6 |
| 2025-10-16 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $1.5M | 1,499 | $1021.3 |
| 2025-10-16 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $1.4M | 1,313 | $1030.8 |
| 2025-10-15 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $14.3M | 14,028 | $1016.2 |
| 2025-09-18 | MPWR | MONOLITHIC POWER SYSTEMS INC | Sell | — | $13.3M | 14,510 | $914.5 |
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 Tseng Saria file Form 4 disclosures for?
Tseng Saria 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 Tseng Saria's 73 reported transactions in the last 12 months, 31 (42%) reference a 10b5-1 trading plan in the Form 4 footnotes.
Are these all the transactions Tseng Saria 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.