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ON Semiconductor Corp.: Q4 FY2025 earnings call

What management said about Q4 FY2025, from the documents filed with the SEC on 9 February 2026: press release. Guidance figures: 12 new, 1 kept. The quarter’s numbers.

Key takeaways

  • Fourth quarter revenue fell year over year: Fourth quarter revenue was $1,530.1 million, down 1% from the third quarter and down 11% from the fourth quarter of 2024. Source
  • GAAP and non-GAAP operating margins diverged: Full-year GAAP operating margin was 1.4% against 18.6% non-GAAP; special items for the year totaled 17.2 percentage points of revenue. Source
  • Restructuring charges recorded across 2025: Restructuring, asset impairments and other charges, net were $58.8 million in the fourth quarter and $666.9 million for 2025, against $133.9 million in 2024. Source
  • Management reported meeting expectations: Management said the company met expectations in the fourth quarter, seeing increasing signs of stabilization in its key markets. Source
  • Free cash flow generation for 2025: Free cash flow was $1,418.6 million for 2025, from $1,759.8 million of operating cash flow less $341.2 million of property, plant and equipment payments, a 24% margin. Source
  • Share repurchases rose across 2025: Repurchases of common stock were $1,377.6 million for 2025, against $654.1 million in 2024, including $450.2 million in the fourth quarter. Source
  • New three-year repurchase program authorized: The company announced a new repurchase program of up to $6 billion over three years, listed among the fourth quarter business highlights. Source

“We remained disciplined in our execution and met expectations in the fourth quarter as we saw increasing signs of stabilization in our key markets”

Hassane El-Khoury, President and CEO, onsemi

Guidance

AreaPeriodFigureAgainst last quarter
Revenue Sourcefirst quarter of 2026$1,435 to $1,535 millionNew
Gross margin (GAAP) Sourcefirst quarter of 202637.4% to 39.4%New
Gross margin (non-GAAP) Sourcefirst quarter of 202637.5% to 39.5%New
Operating expenses (GAAP) Sourcefirst quarter of 2026$407 to $422 millionNew
Special items in operating expenses Sourcefirst quarter of 2026$122 millionNew
Operating expenses (non-GAAP) Sourcefirst quarter of 2026$285 to $300 millionNew
Other income and expense, net (including interest expense) Sourcefirst quarter of 2026($7 million)New
Diluted EPS (GAAP) Sourcefirst quarter of 2026$0.28 to $0.38New
Diluted EPS (non-GAAP) Sourcefirst quarter of 2026$0.56 to $0.66New
Diluted shares outstanding (GAAP) Sourcefirst quarter of 2026398 millionNew
Diluted shares outstanding (non-GAAP) Sourcefirst quarter of 2026397 millionNew
Non-GAAP effective tax rate Source2026 and subsequent periods15%Kept
Share repurchases Sourcenext three yearsup to $6 billionNew

What changed from last quarter

  • New: New share repurchase program of up to $6 billion over three years was authorized. Source
  • New: vertical gallium nitride (vGaN) power semiconductors were introduced. Source
  • New: A memorandum of understanding with Innoscience was signed to explore expanding GaN power device production. Source
  • New: A new collaboration agreement with GlobalFoundries was established for next-generation GaN power devices, beginning with 650V. Source
  • New guidance: The release began projected first-quarter 2026 GAAP and non-GAAP figures. Source

Fourth quarter and full-year results

  • Fourth quarter revenue fell year over year: Fourth quarter revenue was $1,530.1 million, down 1% from the third quarter and down 11% from the fourth quarter of 2024. Source
  • Full-year revenue declined: Full-year 2025 revenue was $5,995.4 million against $7,082.3 million in 2024, a decline of 15%. Source
  • GAAP and non-GAAP operating margins diverged: Full-year GAAP operating margin was 1.4% against 18.6% non-GAAP; special items for the year totaled 17.2 percentage points of revenue. Source
  • Fourth quarter EPS reported on two bases: Fourth quarter diluted EPS was $0.45 GAAP and $0.64 non-GAAP, with net income attributable to the company of $181.8 million GAAP and $257.2 million non-GAAP. Source

Segment revenue

  • PSG revenue fell year over year: PSG revenue was $724.2 million in the fourth quarter, down 2% from the third quarter and down 11% from a year earlier. Source
  • AMG revenue fell year over year: AMG revenue was $556.3 million, down 5% from the third quarter and down 9% from the prior year quarter. Source
  • ISG revenue rose sequentially: ISG revenue was $249.6 million, up 9% from the third quarter and down 17% from the fourth quarter of 2024. Source
  • All three segments fell for 2025: For 2025, PSG revenue fell 16%, AMG 13% and ISG 17% year over year, to $2,805.1 million, $2,261.9 million and $928.4 million. Source

“In 2025, we generated $1.4 billion of free cash flow and returned 100% of our annual free cash flow to shareholders through share repurchases.”

Thad Trent, EVP and CFO of onsemi

Products and technology

  • New vGaN power semiconductors introduced: The company introduced vertical gallium nitride (vGaN) power semiconductors, which it describes as setting a new benchmark for power density, efficiency and ruggedness. Source
  • Innoscience GaN production memorandum: A memorandum of understanding with Innoscience would explore expanding GaN power device production using Innoscience's 200mm GaN-on-silicon process. Source
  • GlobalFoundries GaN collaboration agreement: A new collaboration with GlobalFoundries covers developing and manufacturing next-generation GaN power devices, beginning with 650V. Source

Costs and restructuring charges

  • Restructuring charges recorded across 2025: Restructuring, asset impairments and other charges, net were $58.8 million in the fourth quarter and $666.9 million for 2025, against $133.9 million in 2024. Source
  • Inventory charges in cost of revenue: Restructuring-related inventory and other charges were $32.1 million in the fourth quarter and $313.6 million for 2025, shown within gross profit adjustments. Source
  • Non-GAAP operating expenses declined sequentially: Non-GAAP operating expenses were $282.0 million in the fourth quarter, against $291.2 million in the third quarter, and $1,185.4 million for 2025. Source

“Our strategy is clear: lead in automotive, industrial, and AI data center power with innovation that delivers higher-value solutions for our customers and long-term returns for our shareholders.”

Hassane El-Khoury, President and CEO, onsemi

Gross margin and operating margin

  • Inventory charges drove the margin gap: The gap between GAAP and non-GAAP gross margin in the fourth quarter reflects restructuring related inventory and other charges, shown as 2.1 percentage points. Source
  • Full-year gross margin declined: Full-year gross margin was 33.1% on a GAAP basis and 38.4% non-GAAP, against 45.4% and 45.5% in 2024. Source
  • Fourth quarter operating margins reported: Fourth quarter operating margin was 13.1% GAAP and 19.8% non-GAAP, against 17.0% and 19.2% in the third quarter. Source

Demand and market stabilization

  • Management reported meeting expectations: Management said the company met expectations in the fourth quarter, seeing increasing signs of stabilization in its key markets. Source
  • Benefit tied to market conditions: Management said the company is well-positioned to benefit as market conditions improve, with its focus on operational excellence and margin expansion. Source
  • First-quarter projected figures provided: The release includes a projected first-quarter 2026 GAAP and non-GAAP table covering revenue, gross margin, operating expenses, EPS and diluted shares. Source

Cash flow and balance sheet

  • Free cash flow generation for 2025: Free cash flow was $1,418.6 million for 2025, from $1,759.8 million of operating cash flow less $341.2 million of property, plant and equipment payments, a 24% margin. Source
  • Capital spending fell in 2025: Payments for property, plant and equipment were $341.2 million in 2025, against $694.0 million in 2024, and $69.1 million in the fourth quarter. Source
  • Debt repaid in the fourth quarter: The company repaid $375.0 million of borrowings in the fourth quarter, leaving long-term debt of $2,980.5 million at December 31, 2025. Source
  • Cash balance declined in fourth quarter: Cash and cash equivalents were $2,147.6 million at December 31, 2025, down from $2,472.5 million at October 3, 2025. Source

Share repurchases and shareholder returns

  • Share repurchases rose across 2025: Repurchases of common stock were $1,377.6 million for 2025, against $654.1 million in 2024, including $450.2 million in the fourth quarter. Source
  • New three-year repurchase program authorized: The company announced a new repurchase program of up to $6 billion over three years, listed among the fourth quarter business highlights. Source
  • Weighted diluted shares declined: Weighted average diluted shares were 411.8 million for 2025 and 402.3 million in the fourth quarter, against 432.7 million in 2024. Source

Strategy and investment

  • Major investment cycle described as behind: The CFO said the major investment cycle is behind the company, with new technologies ramping and the financial foundation being strengthened. Source
  • Acquisition payments in 2025: Payments related to business acquisitions were $124.5 million for 2025, including $7.0 million in the fourth quarter. Source
  • Focus on intelligent power and sensing: Management said it continues to invest in intelligent power and sensing technologies to win in the most critical technology transitions in the industry. Source

Coming up, as management said on 9 February 2026

  • Repurchase program over three years: The up to $6 billion repurchase authorization covers the next three years. Source
  • GlobalFoundries 650V GaN development: The GlobalFoundries agreement is to develop and manufacture next-generation GaN power devices, beginning with 650V. Source
  • Normalized tax rate from 2026: From 2026 the company will use a normalized non-GAAP effective tax rate of 15%. Source

In management's words

“As we continue to drive meaningful improvements to our cost structure across the company, we are creating greater leverage in our operating model going forward,”

Thad Trent, EVP and CFO of onsemi

Figures management reported

FigureReported
Gross margin Source36.0% GAAP; 38.2% non-GAAP (fourth quarter of 2025)

Risks management discussed

  • Demand: Management tied the expected benefit of its position to market conditions improving, after noting signs of stabilization. Source
  • Operational: Special items in the non-GAAP reconciliations may change significantly from period to period, and the company cannot estimate them individually in advance. Source
  • Financial: Diluted share count may vary with restricted stock unit vesting, convertible note dilution and repurchases, which affects per-share measures. Source

Earlier plans management reported on

  • Met: Management said the company met expectations in the fourth quarter. Source
  • Not stated: The company referred to a 16% rate through 2025 and a 15% rate from 2026; the release does not state progress against it. Source

Other quarters

Summarised with AI from the documents the company filed with the SEC. Every point is checked against the filing before it is shown: management’s own words word for word, figures against the line or table row they come from. A point that fails the check is left out. Source opens the filing at that line.