Saria Tseng - SEC Form 4 Insider Trading Activity
Summary
Updated Aug 3, 2026
Saria Tseng has filed 2 SEC Form 4 filings across 1 company in the last 90 days - selling. Lifetime open-market sales: $146.30M.
Profile
Saria Tseng is a corporate insider at MONOLITHIC POWER SYSTEMS, INC. (MPWR). Tseng has reported 16 insider filings with the SEC since 2024. The most recent filing was in May 2026.
| Role | EVP & General Counsel |
|---|---|
| Notability | 20/100 |
Board memberships
- MONOLITHIC POWER SYSTEMS, INC.
Awards & honors
- Oversaw legal matters at MPWR
- Involved in multiple SEC filings
Trading Pattern
InsiderAlpha's records for Saria Tseng go back to 2024: 15 primary Form 4 filings, an average of 5.0 per year. 35 recorded transactions carry a Rule 10b5-1 flag, meaning they were pre-scheduled under a written trading plan rather than discretionary.
Career & Filing History
Every role Saria Tseng has reported on a Form 4, reconstructed from the filings themselves - reporting insiders must state their relationship to the issuer (officer title, director seat, or 10% ownership) on every filing.
- EVP & General Counsel at MONOLITHIC POWER SYSTEMS, INC. (MPWR) - 13 filings, 2024 to 2026
- EVP General Counsel at MONOLITHIC POWER SYSTEMS, INC. (MPWR) - 2 filings, 2025
Recent Transactions
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-05-29 | MPWR | MONOLITHIC POWER SYSTEMS, INC. | S - Open-market sale | 7.6K | $1,700.00 | $12.86M |
| 2026-05-27 | MPWR | MONOLITHIC POWER SYSTEMS, INC. | S - Open-market sale | 5.0K | $1,586.43 | $7.93M |
| 2026-05-27 | MPWR | MONOLITHIC POWER SYSTEMS, INC. | G - Bona-fide gift | 200 | $0.00 | |
| 2026-04-10 | MPWR | MONOLITHIC POWER SYSTEMS, INC. | S - Open-market sale [10b5-1] | 120 | $1,321.94 | $159K |
| 2026-04-10 | MPWR | MONOLITHIC POWER SYSTEMS, INC. | S - Open-market sale [10b5-1] | 840 | $1,319.25 | $1.11M |
| 2026-04-10 | MPWR | MONOLITHIC POWER SYSTEMS, INC. | S - Open-market sale [10b5-1] | 4.2K | $1,312.82 | $5.57M |
| 2026-04-10 | MPWR | MONOLITHIC POWER SYSTEMS, INC. | S - Open-market sale [10b5-1] | 1.3K | $1,308.30 | $1.67M |
| 2026-04-10 | MPWR | MONOLITHIC POWER SYSTEMS, INC. | S - Open-market sale [10b5-1] | 800 | $1,302.52 | $1.04M |
| 2026-04-10 | MPWR | MONOLITHIC POWER SYSTEMS, INC. | S - Open-market sale [10b5-1] | 400 | $1,292.08 | $517K |
| 2026-04-10 | MPWR | MONOLITHIC POWER SYSTEMS, INC. | S - Open-market sale [10b5-1] | 120 | $1,287.12 | $154K |
| 2026-04-10 | MPWR | MONOLITHIC POWER SYSTEMS, INC. | S - Open-market sale [10b5-1] | 240 | $1,279.55 | $307K |
| 2026-04-10 | MPWR | MONOLITHIC POWER SYSTEMS, INC. | S - Open-market sale [10b5-1] | 360 | $1,270.29 | $457K |
| 2026-04-10 | MPWR | MONOLITHIC POWER SYSTEMS, INC. | S - Open-market sale [10b5-1] | 560 | $1,266.48 | $709K |
| 2026-04-08 | MPWR | MONOLITHIC POWER SYSTEMS, INC. | S - Open-market sale [10b5-1] | 1.4K | $1,179.50 | $1.65M |
| 2026-04-08 | MPWR | MONOLITHIC POWER SYSTEMS, INC. | S - Open-market sale [10b5-1] | 1.7K | $1,176.35 | $1.98M |
| 2026-04-08 | MPWR | MONOLITHIC POWER SYSTEMS, INC. | S - Open-market sale [10b5-1] | 2.0K | $1,170.38 | $2.38M |
| 2026-04-08 | MPWR | MONOLITHIC POWER SYSTEMS, INC. | S - Open-market sale [10b5-1] | 684 | $1,165.66 | $797K |
| 2026-04-08 | MPWR | MONOLITHIC POWER SYSTEMS, INC. | S - Open-market sale [10b5-1] | 560 | $1,159.62 | $649K |
| 2026-04-08 | MPWR | MONOLITHIC POWER SYSTEMS, INC. | S - Open-market sale [10b5-1] | 480 | $1,149.05 | $552K |
| 2026-04-08 | MPWR | MONOLITHIC POWER SYSTEMS, INC. | S - Open-market sale [10b5-1] | 556 | $1,144.42 | $636K |
Companies - Last 90 Days
- MONOLITHIC POWER SYSTEMS, INC. (MPWR) - 2 filings, last 2026-05-29
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades at the companies Saria Tseng has recently filed at. Multiple unrelated insiders buying the same stock within a short window - cluster buying - has historically been one of the strongest Form 4 signals.
- Michael Hsing - $295.49M of MPWR open-market activity in the last 12 months
- Deming Xiao - $76.43M of MPWR open-market activity in the last 12 months
- Maurice Sciammas - $76.09M of MPWR open-market activity in the last 12 months
- Theodore Blegen - $39.81M of MPWR open-market activity in the last 12 months
- Eugen J. Elmiger - $22.41M of MPWR open-market activity in the last 12 months
- Jeff Zhou - $3.92M of MPWR open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
- Nicholas S. Schorsch
- Trygve Seglem
- Lawrence B. Seidman
- Thomas J. Shaw
- Silver Point Capital L.P.
- SilverBay Capital Management LLC
- Michael Simanovsky
- Bob R. Simpson
Frequently Asked Questions
Who is Saria Tseng?
Saria Tseng is a corporate insider at MONOLITHIC POWER SYSTEMS, INC. (MPWR). Tseng has reported 16 insider filings with the SEC since 2024. The most recent filing was in May 2026.…
How many SEC Form 4 filings has Saria Tseng submitted recently?
2 primary Form 4 filings in the last 90 days, covering 1 company.
Has Saria Tseng been buying or selling stock?
Recorded transactions: 0 open-market purchases and 59 open-market sales ($146.30M) across all tracked filings.
Where can I see all of Saria Tseng's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
Learn More
Open the live Saria Tseng profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.