Filing Signals

Source: SEC EDGAR Compiled 2026-09-14 08:28 UTC All 21 checks passing

← All events

MONOLITHIC POWER SYSTEMS INC

CIK 1280452 MPWR·Semiconductors · All EDGAR filings ↗

Progression

  1. Finance chief departure 8-K
  2. Restatement 8-K +22d
  3. Material weakness 10-K +0d
Material weakness high Filing comparison

MONOLITHIC POWER SYSTEMS INC reported a material weakness in internal control

Internal control reported effective Material weakness in internal control

Item 9A. Controls and Procedures of this Annual Report, a material weakness was identified in internal control over financial reporting related to the accounting for deferred income taxes. Due to this finding of a material weakness, we concluded that our internal control over financial reporting was not effective as of December 31, 2024 and December 31, 2025. Until this material weakness is remediated, there is a reasonable possibility that a material misstatement of our interim or annual financial statements will…
Evidence
Current state
material_weakness
Current state label
Material weakness in internal control
Direction
newly reported
Prior filed
2025-03-03
Prior form
10-K
Prior state
effective
Prior state label
Internal control reported effective
Remediation stated
Yes
Severity
high
Source
Item 9A internal control conclusion, compared with the prior filing
Why
The company's conclusion on internal control over financial reporting changed: a material weakness was newly reported, or a previously reported one no longer appears.
Restatement SEC item code

MONOLITHIC POWER SYSTEMS INC said previously issued financial statements should no longer be relied upon

Item 4.02(a) — management or the board reached the conclusion

Evidence
Item code
4.02
Item title
Non-Reliance on Previously Issued Financial Statements or a Related Audit Report or Completed Interim Review
Limb
a
Limb basis
filing says management or the board concluded
Limb label
Item 4.02(a) — management or the board reached the conclusion
Severity
normal
Source
SEC 8-K item code
Why
The company told investors that previously issued financial statements should no longer be relied upon.
Finance chief departure elevated Filing comparison

MONOLITHIC POWER SYSTEMS INC's Chief Financial Officer departed, replaced on an interim basis

Evidence
Interim only
Yes
Item code
5.02
Item title
Departure of Directors or Certain Officers
Role
Chief Financial Officer
Severity
elevated
Source
SEC 8-K item code
Successor named
No
Why
The company's chief financial or accounting officer departed, disclosed under 8-K Item 5.02.