Employer with a benefit plan ยท SEC filer
MONOLITHIC POWER SYSTEMS, INC.
79 GREAT OAKS BOULEVARD, SAN JOSE, CA 95119
EIN
77-0466789
SEC CIK
0001280452
SEC · 2026-09-02
Industry (SIC)
Semiconductors & Related Devices (3674)
SEC · 2026-09-02
State of incorporation
DE
SEC · 2026-09-02
Ticker
MPWR
SEC · 2026-09-02
Latest SEC filing
4 2026-09-02
SEC · 2026-09-02
Benefit plan 1, 2024 filing
MONOLITHIC POWER SYSTEMS, INC. 401(K) SAVINGS PLAN
DOL · 2025-09-25
Participants (start of year)
479
DOL · 2025-09-25
Plan features
code 2F2G2E2J2K2T3D
DOL · 2025-09-25
Plan type
Single-employer plan
DOL · 2025-09-25
Business code (NAICS)
334410
DOL · 2025-09-25
Benefit plan 501, 2024 filing
MONOLITHIC POWER SYSTEMS, INC. HEALTH & WELFARE BENEFIT PLAN
DOL · 2025-05-29
Participants (start of year)
386
DOL · 2025-05-29
Plan features
code 4A4B4D4E4F4H4L4Q
DOL · 2025-05-29
Plan type
Single-employer plan
DOL · 2025-05-29