MPWR at a glance
Monolithic Power Systems (MPWR, SEC CIK 1280452) filed its latest 10-K annual report on February 27, 2026, a 10-Q quarterly report on August 5, 2026, an 8-K current report on September 10, 2026 and Form 4 insider filings as recently as September 30, 2026. SignalX summarizes each filing with AI and tracks the company's insider trades and institutional holders.
- For the fiscal year ended December 31, 2025 (FY2025), Monolithic Power Systems (MPWR) reported revenue of $2.8 billion (up 26.4% from FY2024) and net income of $621.5 million. Diluted EPS was $12.86.
- As of June 30, 2026, 46 institutional investment managers tracked by SignalX reported holding Monolithic Power Systems (MPWR) shares worth $38.3 billion in 13F-HR filings.
- The most recent insider open-market sale reported on Form 4 was by Hsing Michael on September 28, 2026 of 130 shares at $1356.94 per share.
- In the last 90 days, MPWR insiders reported 0 open-market purchases ($0) and 32 open-market sales ($61.0M) on Form 4, a net sale of $61.0M.
Source: SEC EDGAR (XBRL financial data, 13F-HR and Form 4 filings).
- Revenue · FY2025
- $2.8B
- +26.4% vs prior year
- Insiders · 90 days
- 0 buys · 32 sells
- Net −$61.0M
- 13F holders
- 46 funds
- $38.3B · +4 vs prior quarter
- Latest 8-K
- Sep 10, 2026
- Item 8.01
AI 10-K Annual Report Analysis
Latest 10-K, fiscal year ended Dec 31, 2025
Risk Factors
- 92% of revenue from Asia customers; export control rules targeting AI-enabling products risk cutting off key market access
- Top 3 distributors (all distributors) = 54% of FY2025 revenue; single distributor loss could materially disrupt financials
- Material weakness in deferred income tax accounting identified; internal controls deemed ineffective at Dec 31, 2024 and 2025
- CHIPS Act excludes fabless model; MPS ineligible for funding while competitors gain production capacity and shorter lead times
- $1.1B deferred tax benefit from 10-year foreign tax incentive at risk if OECD Pillar Two Administrative Guidance adopted by granting jurisdiction
Business Overview
- Fabless analog/mixed-signal IC maker serving storage, enterprise data, automotive, communications, consumer, and industrial end markets via proprietary process/packaging tech
- Enterprise data revenue share fell sharply to 25.2% from 32.5%; storage & computing rose to 26.3% from 22.7%, reclaiming top-market position: reflects AI server demand normalization
- Automotive segment grew to 21.2% of revenue from 18.8%, signaling continued diversification away from cloud concentration
- Headcount grew 12% YoY to 4,501 employees (from 4,017), with 2,231 patents/applications as of Dec 31, 2025
- CFO Bernie Blegen departing immediately post-filing; Corporate Controller Rob Dean stepping in as Interim CFO: notable leadership transition disclosed within the 10-K itself
Management Discussion & Analysis
- Revenue $2.79B, up $583.4M (+26.4% YoY) driven by volume growth; Storage & Computing best segment at $732.5M (+46.0%), Enterprise Data worst at -$14.4M (-2.0%)
- Operating margin 26.1% vs 24.4%; gross margin 55.2% vs 55.3%; net margin 22.3% vs 72.1% (2024 inflated by $1.0B one-time tax benefit)
- Operating cash flow $838.2M vs $788.4M prior year; cash + investments $1.26B vs $862.9M
- Buybacks minimal at $6.6M (new $500M program, $493.4M remaining); quarterly dividend raised from $1.56 to $2.00/share effective April 2026
- Key risks: tariffs/export controls, global macro uncertainty; $442.2M purchase obligations outstanding, $389.8M due within 12 months
AI summary of the MPWR 10-K filed . Generated from the filing text; verify against the original.View on SEC EDGARHow to read a 10-K
AI 10-Q Quarterly Report Analysis
Latest 10-Q, quarter ended Jun 30, 2026
Management Discussion & Analysis
- Q2 revenue $980.6M, up 47.6% YoY from $664.6M
- Operating margin 31.0% vs 24.8% YoY; gross margin 55.2% vs 55.1%
- Enterprise Data best performer: $380.6M, up 164.3%; Consumer worst: $56.8M, down 4.8%
- Operating cash flow $478.2M; total liquidity $1,413.8M at June 30
- Near-term headwinds: macroeconomic uncertainty, tariffs, export controls, retaliatory measures and geopolitical tensions
Risk Factors
- No Risk Factors section provided; submitted text contains Items 2–6 only
- Repurchase authorization increased by $500.0 million in July 2026
- Stock repurchases totaled $4.0 million during the quarter
- Executive trading plans covered up to 215,409 shares through May 2027
- No senior-securities defaults reported
AI summary of the MPWR 10-Q filed . Generated from the filing text; verify against the original.View on SEC EDGAR10-K vs 10-Q vs 8-K
AI 8-K Current Report Analysis
The most recent material events, by 8-K item
Item 8.01: Other Events
- Third-quarter cash dividend declared at $2.00 per share
- Record date September 30, 2026, determining eligible shareholders
Item EX-99.1: Item EX-99.1
- Third-quarter dividend declared at $2.00 per common share
- Record date September 30, 2026; payment date October 15, 2026
Item 2.02: Results of Operations and Financial Condition
- Q2 2026 results for quarter ended June 30, 2026
- Press release attached as Exhibit 99.1, containing the detailed financial results
Item 5.07: Submission of Matters to a Vote of Security Holders
- Stockholders re-elected Victor K. Lee and Jeff Zhou as Class I directors through 2029
- Ernst & Young LLP appointment ratified for fiscal 2026 with 45,354,955 votes for
Item 8.01: Other Events
- Quarterly cash dividend of $2.00 per share declared for MPWR shareholders
- Record date June 30, 2026; payment date July 15, 2026
Item EX-99.1: Item EX-99.1
- Quarterly dividend: $2.00 per common share
- Record date: June 30, 2026, determining eligible shareholders
AI summaries of MPWR 8-K current reports filed with the SEC. What 8-K item codes mean
SignalX for MPWR
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Recent Insider Transactions (Form 4)
Latest reported trades by officers, directors and 10% owners
| Insider | Type | Date | Shares | Price |
|---|---|---|---|---|
| Hsing Michael | Sell | Sep 28, 2026 | 130 | $1356.94 |
| Hsing Michael | Sell | Sep 28, 2026 | 5,783 | $1343.76 |
| Hsing Michael | Sell | Sep 28, 2026 | 1,111 | $1333.34 |
| Hsing Michael | Sell | Sep 28, 2026 | 6,343 | $1347.15 |
| Hsing Michael | Sell | Sep 28, 2026 | 10,967 | $1351.43 |
| Hsing Michael | Sell | Sep 28, 2026 | 2,949 | $1338.66 |
| Hsing Michael | Sell | Sep 28, 2026 | 2,121 | $1328.54 |
| Hsing Michael | Sell | Sep 28, 2026 | 596 | $1323.31 |
Financial SummaryXBRL
| Metric | FY2023 | FY2024 | FY2025 |
|---|---|---|---|
| Profitability | |||
| Revenue | - | $2.2B | $2.8B |
| Gross Profit | - | $1.2B | $1.5B |
| Operating Income | - | $539.4M | $728.6M |
| Net Income | - | $1.8B | $621.5M |
| Gross Margin | - | 55.3% | 55.2% |
| Op. Margin | - | 24.4% | 26.1% |
| Net Margin | - | 81.0% | 22.3% |
| Balance Sheet | |||
| Total Assets | $2.4B | $3.6B | $4.2B |
| Equity | - | $3.1B | $3.5B |
| ROE | - | 56.8% | 17.6% |
| Per Share | |||
| EPS | - | $36.59 | $12.86 |
| Cash Flow | |||
| Operating CF | - | $788.4M | $838.2M |
| CapEx | $57.6M | $146.1M | $172.0M |
Source: XBRL data in Monolithic Power Systems (MPWR)'s 10-K filings on SEC EDGAR, in USD. Compare across companies →
13F Fund Holdings: Quarterly Trend
Latest: Q2 2026Aggregate MPWR share value held by 13F filers tracked by SignalX, by quarter.
Quarterly totals table
| Quarter | Funds | Total value |
|---|---|---|
| Q2 2026 | 46 | $38.34B |
| Q1 2026 | 42 | $29.70B |
| Q4 2025 | 41 | $24.32B |
| Q3 2025 | 41 | $25.13B |
| Q2 2025 | 37 | $19.05B |
| Q1 2025 | 35 | $10.72B |
| Q4 2024 | 29 | $9.52B |
| Q3 2024 | 23 | $6.10B |
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Source: 13F-HR filings on SEC EDGAR (aggregated from 294 fund-quarter rows). Reflects only 13F filers tracked by SignalX, not the full institutional ownership universe. How 13F filings work
MPWR filing archive
AI analysis pages for each 10-K, 10-Q and 8-K
10-K annual reports
10-Q quarterly reports
Latest 2026 SEC Filings: 10-K, 10-Q, 8-K & Form 4
| Form | Filing date | Period | Analysis | SEC |
|---|---|---|---|---|
| 4 | Sep 30, 2026 | - | - | - |
| 8-K | Sep 10, 2026 | - | Analysis | - |
| 4 | Sep 2, 2026 | - | - | - |
| 4 | Aug 26, 2026 | - | - | - |
| 4 | Aug 25, 2026 | - | - | - |
| 4 | Aug 19, 2026 | - | - | - |
| 4 | Aug 13, 2026 | - | - | - |
| 4 | Aug 6, 2026 | - | - | - |
| 4 | Aug 6, 2026 | - | - | - |
| 10-Q | Aug 5, 2026 | Jun 30, 2026 | Analysis | |
| 4 | Aug 5, 2026 | - | - | - |
| 8-K | Jul 30, 2026 | - | Analysis | - |
| 4 | Jul 28, 2026 | - | - | - |
| 4 | Jul 17, 2026 | - | - | - |
| SC 13G | Jul 15, 2026 | - | - | |
| 4 | Jul 6, 2026 | - | - | - |
| 8-K | Jun 12, 2026 | - | Analysis | - |
| 4 | Jun 3, 2026 | - | - | |
| 4 | Jun 2, 2026 | - | - | |
| 4 | May 29, 2026 | - | - | |
| 4 | May 28, 2026 | - | - | |
| 4 | May 27, 2026 | - | - | |
| 4 | May 27, 2026 | - | - | |
| 4 | May 20, 2026 | - | - | |
| 4 | May 20, 2026 | - | - |
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MPWR SEC filings: frequently asked questions
Are MPWR insiders buying or selling?
In the last 90 days, Monolithic Power Systems (MPWR) officers, directors and 10% owners reported no open-market purchases and 32 open-market sales worth $61.0 million by 4 insiders on Form 4. Many insider sales are pre-planned or for taxes, so purchases usually carry more information.
Which institutions hold MPWR stock?
As of June 30, 2026, the largest Monolithic Power Systems (MPWR) holders among the 13F filers tracked by SignalX were BlackRock ($7.7 billion), FMR LLC (Fidelity) ($7.2 billion), Vanguard Capital Management LLC ($4.3 billion), Vanguard Portfolio Management LLC ($3.5 billion), Invesco Ltd ($3.2 billion). 13F-HR reports are filed up to 45 days after each quarter ends.
What was MPWR's revenue in fiscal year 2025?
For the fiscal year ended December 31, 2025 (FY2025), Monolithic Power Systems (MPWR) reported revenue of $2.8 billion (up 26.4% from FY2024) and net income of $621.5 million. Diluted EPS was $12.86. The figures come from the XBRL data in the 10-K.
What are the main risks in MPWR's latest 10-K?
In the 10-K filed February 27, 2026, Monolithic Power Systems (MPWR) flagged: 92% of revenue from Asia customers; export control rules targeting AI-enabling products risk cutting off key market access. Top 3 distributors (all distributors) = 54% of FY2025 revenue; single distributor loss could materially disrupt financials. (AI summary of the Risk Factors section.)
What did MPWR report in its latest 8-K?
Monolithic Power Systems (MPWR) filed an 8-K on September 10, 2026 reporting Item 8.01 (Other Events). Third-quarter cash dividend declared at $2.00 per share.
What are the latest MPWR SEC filings?
Monolithic Power Systems (MPWR) filed its latest 10-K annual report on February 27, 2026, a 10-Q quarterly report on August 5, 2026, an 8-K current report on September 10, 2026 and a Form 4 insider filing on September 30, 2026.
What is MPWR's SEC CIK number?
Monolithic Power Systems (MPWR)'s SEC Central Index Key (CIK) is 1280452. EDGAR lists every MPWR filing under that number.
Ask anything about MPWR
The research agent reads MPWR's filings, financials, insider trades and 13F holders, then answers with sources.