Maurice Sciammas - SEC Form 4 Insider Trading Activity
Summary
Updated Aug 3, 2026
Maurice Sciammas has filed 7 SEC Form 4 filings across 1 company in the last 90 days - selling. Lifetime open-market sales: $95.39M.
Profile
Maurice Sciammas is a corporate insider at MONOLITHIC POWER SYSTEMS, INC. (MPWR). Sciammas has reported 27 insider filings with the SEC since 2024. The most recent filing was in July 2026.
| Role | EVP, WW Sales & Marketing |
|---|---|
| Notability | 25/100 |
Board memberships
- MONOLITHIC POWER SYSTEMS, INC.
Trading Pattern
InsiderAlpha's records for Maurice Sciammas go back to 2024: 25 primary Form 4 filings, an average of 8.3 per year. 31 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 Maurice Sciammas 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, WW Sales & Marketing at MONOLITHIC POWER SYSTEMS, INC. (MPWR) - 20 filings, 2024 to 2026
- EVP, WW Sales Marketing at MONOLITHIC POWER SYSTEMS, INC. (MPWR) - 5 filings, 2025
Recent Transactions
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-07-17 | MPWR | MONOLITHIC POWER SYSTEMS, INC. | S - Open-market sale [10b5-1] | 110 | $1,405.71 | $155K |
| 2026-07-17 | MPWR | MONOLITHIC POWER SYSTEMS, INC. | S - Open-market sale [10b5-1] | 117 | $1,400.45 | $164K |
| 2026-07-17 | MPWR | MONOLITHIC POWER SYSTEMS, INC. | S - Open-market sale [10b5-1] | 213 | $1,396.16 | $297K |
| 2026-07-17 | MPWR | MONOLITHIC POWER SYSTEMS, INC. | S - Open-market sale [10b5-1] | 50 | $1,388.19 | $69K |
| 2026-07-17 | MPWR | MONOLITHIC POWER SYSTEMS, INC. | S - Open-market sale [10b5-1] | 410 | $1,384.11 | $567K |
| 2026-07-17 | MPWR | MONOLITHIC POWER SYSTEMS, INC. | S - Open-market sale [10b5-1] | 418 | $1,378.73 | $576K |
| 2026-07-17 | MPWR | MONOLITHIC POWER SYSTEMS, INC. | S - Open-market sale [10b5-1] | 472 | $1,375.47 | $649K |
| 2026-07-17 | MPWR | MONOLITHIC POWER SYSTEMS, INC. | S - Open-market sale [10b5-1] | 240 | $1,369.18 | $329K |
| 2026-07-17 | MPWR | MONOLITHIC POWER SYSTEMS, INC. | S - Open-market sale [10b5-1] | 50 | $1,359.36 | $68K |
| 2026-07-17 | MPWR | MONOLITHIC POWER SYSTEMS, INC. | S - Open-market sale [10b5-1] | 5.6K | $1,352.95 | $7.63M |
| 2026-07-17 | MPWR | MONOLITHIC POWER SYSTEMS, INC. | S - Open-market sale [10b5-1] | 1.5K | $1,348.91 | $2.03M |
| 2026-07-17 | MPWR | MONOLITHIC POWER SYSTEMS, INC. | S - Open-market sale [10b5-1] | 1.9K | $1,344.16 | $2.51M |
| 2026-07-17 | MPWR | MONOLITHIC POWER SYSTEMS, INC. | S - Open-market sale [10b5-1] | 1.5K | $1,339.59 | $1.96M |
| 2026-07-17 | MPWR | MONOLITHIC POWER SYSTEMS, INC. | S - Open-market sale [10b5-1] | 776 | $1,334.59 | $1.04M |
| 2026-07-17 | MPWR | MONOLITHIC POWER SYSTEMS, INC. | S - Open-market sale [10b5-1] | 464 | $1,329.30 | $617K |
| 2026-07-17 | MPWR | MONOLITHIC POWER SYSTEMS, INC. | S - Open-market sale [10b5-1] | 409 | $1,323.93 | $541K |
| 2026-07-17 | MPWR | MONOLITHIC POWER SYSTEMS, INC. | S - Open-market sale [10b5-1] | 274 | $1,318.42 | $361K |
| 2026-07-17 | MPWR | MONOLITHIC POWER SYSTEMS, INC. | S - Open-market sale [10b5-1] | 527 | $1,314.03 | $692K |
| 2026-07-06 | MPWR | MONOLITHIC POWER SYSTEMS, INC. | S - Open-market sale [10b5-1] | 30 | $1,351.61 | $41K |
| 2026-06-03 | MPWR | MONOLITHIC POWER SYSTEMS, INC. | S - Open-market sale [10b5-1] | 30 | $1,533.95 | $46K |
Companies - Last 90 Days
- MONOLITHIC POWER SYSTEMS, INC. (MPWR) - 7 filings, last 2026-07-17
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades at the companies Maurice Sciammas 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
- Saria Tseng - $145.64M of MPWR open-market activity in the last 12 months
- Deming Xiao - $76.43M 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:
- Neil Mehta
- Keith A. Meister
- MetLife Investment Management, LLC
- John Micek
- Andrew J. Mills
- Charles N. Mills
- Kevin J. Mills
- Mink Brook Asset Management LLC
Frequently Asked Questions
Who is Maurice Sciammas?
Maurice Sciammas is a corporate insider at MONOLITHIC POWER SYSTEMS, INC. (MPWR). Sciammas has reported 27 insider filings with the SEC since 2024. The most recent filing was in July 2026.…
How many SEC Form 4 filings has Maurice Sciammas submitted recently?
7 primary Form 4 filings in the last 90 days, covering 1 company.
Has Maurice Sciammas been buying or selling stock?
Recorded transactions: 0 open-market purchases and 60 open-market sales ($95.39M) across all tracked filings.
Where can I see all of Maurice Sciammas'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 Maurice Sciammas profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.