Exceeds 2Q Revenue Expectations, Growing 10% Sequentially and 14% Year-over-Year with Continued Double-Digit Year-over-Year Growth Momentum into 3Q

Diodes Incorporated (Diodes) (Nasdaq: DIOD) today reported its financial results for the second quarter ended June 30, 2025.

Second Quarter Highlights

• Revenue was $366.2 million, compared to $319.8 million in the second quarter 2024 and $332.1 million in the prior quarter;
• GAAP gross profit was $115.3 million, compared to $107.4 million in the same quarter a year ago and $104.7 million in the prior quarter;
• GAAP gross profit margin was 31.5 percent, compared to 33.6 percent in the second quarter of 2024 and 31.5 percent in the prior quarter;
• GAAP net income was $46.1 million, compared to GAAP net income of $8.0 million in the same quarter a year ago and GAAP net loss of $4.4 million last quarter;
• Non-GAAP adjusted net income was $15.0 million, compared to $15.4 million in the same quarter a year ago and $8.8 million in the prior quarter;
• GAAP income was $0.99 per diluted share, compared to GAAP EPS of $0.17 per diluted share in the second quarter of 2024 and GAAP loss per share of $0.10 per share in the prior quarter;
• Non-GAAP EPS was $0.32 per diluted share, compared to $0.33 per diluted share in the same quarter a year ago and $0.19 per diluted share in the prior quarter;
• Excluding $4.6 million, net of tax, non-cash share-based compensation expense, both GAAP net income and non-GAAP adjusted net income would have increased by $0.10 per diluted share;
• EBITDA was $84.5 million, or 23.1 percent of revenue, compared to $41.1 million, or 12.8 percent of revenue during the same quarter last year and $26.2 million, or 7.9 percent of revenue in the prior quarter; and
• Achieved $41.5 million cash flow from operations and $21.1 million of free cash flow, including $20.4 million of capital expenditures. Net cash flow was a negative $18.2 million, including approximately $49.2 million from an increase in equity investments and $10.0 million for the stock buyback program.

Commenting on the results, Gary Yu, President and CEO of Diodes, stated, “Our above expected revenue results represent our third consecutive quarter of year-over-year growth, indicating the ongoing improvement in market conditions and demand. Point of sales (POS) increased sequentially across all regions with double-digit growth in Asia. The increasing demand in the quarter also contributed to channel inventory being reduced further with both channel and internal inventory days decreasing.

“While we continue to see positive signs of a broader market recovery, our consumer end market experienced the strongest growth during the quarter, contributing to less favorable product mix combined with our higher-margin automotive and industrial markets remaining effectively flat as a percentage of total revenue. Additionally, the channel inventory depletion continues to limit increased loading at our manufacturing facilities, resulting in underloading costs also being a headwind to gross margin expansion. Even when considering these dynamics, we continued to increase gross profit dollars and delivered non-GAAP earnings growth of almost 70% sequentially as we continued to closely manage expenses.

“As we look to the third quarter, we expect to extend our strong growth momentum with revenue anticipated to increase 7% sequentially and 12% year-over-year at the mid-point, mainly driven by strong demand in Asia for AI-related computing applications, consumer and increasing demand in the EV automotive market in China.”

Second Quarter 2025

Revenue for second quarter 2025 was $366.2 million, compared to $319.8 million in the second quarter 2024 and $332.1 million in the first quarter 2025.

GAAP gross profit for the second quarter 2025 was $115.3 million, or 31.5 percent of revenue, compared to $107.4 million, or 33.6 percent of revenue, in the second quarter of 2024 and $104.7 million, or 31.5 percent of revenue, in the first quarter 2025.

GAAP operating expenses for second quarter 2025 were $105.9 million, or 28.9 percent of revenue, and on a non-GAAP basis were $99.8 million, or 27.3 percent of revenue, which excludes $5.8 million acquisition-related intangible asset cost. GAAP operating expenses in the second quarter 2024 were $103.7 million, or 32.4 percent of revenue and in the first quarter 2025 were $103.4 million, or 31.1 percent of revenue.

Second quarter 2025 GAAP net income was $46.1 million, or $0.99 per diluted share, compared to GAAP net income in the second quarter 2024 of $8.0 million, or $0.17 per diluted share and GAAP net loss in the first quarter 2025 of $4.4 million, or $0.10 per diluted share.

Second quarter 2025 non-GAAP adjusted net income was $15.0 million, or $0.32 per diluted share, which excluded, net of tax, $23.4 million of non-cash unrealized mark-to-market gains on investments, $12.7 million gain on the disposal of a subsidiary, and $4.8 million of acquisition-related intangible asset amortization cost. This compares to non-GAAP adjusted net income of $15.4 million, or $0.33 per diluted share, in the second quarter 2024 and $8.8 million, or $0.19 per diluted share, in the first quarter 2025.

The following is an unaudited summary reconciliation of GAAP net income to non-GAAP adjusted net income and per share data, net of tax (in thousands, except per share data):

Note: Throughout this release, we refer to “net income/loss attributable to common stockholders” as “net income/loss.”

(See the reconciliation tables of GAAP net income to non-GAAP adjusted net income near the end of this release for further details.)

Included in second quarter 2025 GAAP and non-GAAP adjusted net income was approximately $4.6 million, net of tax, non-cash share-based compensation expense. Excluding share-based compensation expense, GAAP earnings per share (“EPS”) and non-GAAP adjusted EPS would have increased by $0.10 per share for the second quarter 2025, compared to $0.07 per share for GAAP and $0.06 per share for non-GAAP in the second quarter 2024 and $0.11 for both GAAP and non-GAAP in the first quarter 2025.

EBITDA (a non-GAAP measure), which represents earnings before net interest expense, income tax, depreciation and amortization, in the second quarter 2025 was $84.5 million, or 23.1 percent of revenue, compared to $41.1 million, or 12.8 percent of revenue, in the second quarter 2024 and $26.2 million, or 7.9 percent of revenue, in the first quarter 2025. For a reconciliation of GAAP net income to EBITDA, see the table near the end of this release for further details.

For the second quarter 2025, net cash provided by operating activities was $41.5 million. Net cash flow was negative $18.2 million, including approximately $49.2 million for increase in equity investment and $10.0 million for the stock buyback program. Free cash flow (a non-GAAP measure) was $21.1 million, which includes $20.4 million of capital expenditures.

Balance Sheet

As of June 30, 2025, the Company had approximately $333 million in cash and cash equivalents, restricted cash, and short-term investments. Total debt (including long-term and short-term) amounted to approximately $54 million and working capital was approximately $871 million.

The results announced today are preliminary and unaudited, as they are subject to the Company finalizing its closing procedures and completion of the quarterly review by its independent registered public accounting firm. As such, these results are subject to revision until the Company files its Form 10-Q for the quarter ending June 30, 2025.

Business Outlook

Gary Yu further commented, “For the third quarter of 2025, we expect revenue to increase to approximately $392 million, plus or minus 3 percent, representing 12 percent over the prior year period at the mid-point, which will be the fourth consecutive quarter of year-over-year growth. GAAP gross margin is expected to be 31.6 percent, plus or minus 1 percent. Non-GAAP operating expenses, which are GAAP operating expenses adjusted for amortization of acquisition-related intangible assets, are expected to be approximately 26.0 percent of revenue, plus or minus 1 percent. We expect net interest income to be approximately $1.0 million. Our income tax rate is expected to be 18.0 percent, plus or minus 3 percent, and shares used to calculate diluted EPS for the third quarter are anticipated to be approximately 46.5 million.”

Amortization of acquisition-related intangible assets of $4.8 million, after tax, for previous acquisitions is not included in these non-GAAP estimates.

Conference Call

Diodes will host a conference call on Thursday, August 7, 2025 at 4:00 p.m. Central Time (5:00 p.m. Eastern Time) to discuss its second quarter financial results. Investors and analysts may join the conference call by dialing 1-833-634-2590, and international callers may join the teleconference by dialing +1-412-317-6038. A telephone replay of the call will be made available approximately two hours after the call and will remain available until August 14, 2025 at midnight Central Time. The replay number is 1-877-344-7529 with an access code of 1987388 followed by the # key. International callers should dial +1-412-317-0088 and enter the same pass code at the prompt followed by the # key.

Additionally, this conference call will be broadcast live over the Internet and can be accessed by all interested parties on the Investor Relations section of the Company’s website. To listen to the live call, please go to the investors’ section of Diodes’ website and click on the conference call link at least 15 minutes prior to the start of the call to register, download and install any necessary audio software. For those unable to participate during the live broadcast, a replay will be available shortly after the call on Diodes' website for approximately 90 days.

About Diodes Incorporated

Diodes Incorporated (Nasdaq: DIOD), a Standard and Poor’s SmallCap 600 and Russell 3000 Index company, delivers high-quality semiconductor products to the world’s leading companies in the automotive, industrial, computing, consumer electronics, and communications markets. We leverage our expanded product portfolio of analog and discrete power solutions combined with leading-edge packaging technology to meet customers’ needs. Our broad range of application-specific products and solutions-focused sales, coupled with global operations including engineering, testing, manufacturing, and customer service, enable us to be a premier provider for high-volume, high-growth markets. For more information, visit www.diodes.com.

Safe Harbor Statement Under the Private Securities Litigation Reform Act of 1995: Any statements set forth above that are not historical facts are forward-looking statements that involve risks and uncertainties that could cause actual results to differ materially from those in the forward-looking statements. Such statements include statements containing forward-looking words such as “expect,” “anticipate,” “aim,” “estimate,” and variations thereof, including without limitation statements, whether direct or implied, regarding expectations of that for the third quarter of 2025, we expect revenue to be approximately $392 million plus or minus 3 percent; we expect GAAP gross margin to be 31.6 percent, plus or minus 1 percent; non-GAAP operating expenses, which are GAAP operating expenses adjusted for amortization of acquisition-related intangible assets, are expected to be approximately 26.0 percent of revenue, plus or minus 1 percent; we expect non-GAAP net interest income to be approximately $1.0 million; we expect our income tax rate to be 18.0 percent, plus or minus 3 percent; shares used to calculate diluted EPS for the third quarter are anticipated to be approximately 46.5 million. Potential risks and uncertainties include, but are not limited to, such factors as: the risk that such expectations may not be met; the risk that the expected benefits of acquisitions may not be realized or that integration of acquired businesses may not continue as rapidly as we anticipate; the risk that we may not be able to maintain our current growth strategy or continue to maintain our current performance, costs, and loadings in our manufacturing facilities; the risk that we may not be able to increase our automotive, industrial, or other revenue and market share; risks of domestic and foreign operations, including excessive operating costs, labor shortages, higher tax rates, and our joint venture prospects; the risks of cyclical downturns in the semiconductor industry and of changes in end-market demand or product mix that may affect gross margin or render inventory obsolete; the risk of unfavorable currency exchange rates; the risk that our future outlook or guidance may be incorrect; the risks of global economic weakness or instability in global financial markets; the risks of trade restrictions, tariffs, or embargoes; the risk of breaches of our information technology systems; and other information, including the “Risk Factors” detailed from time to time in Diodes’ filings with the United States Securities and Exchange Commission.

The Diodes logo is a registered trademark of Diodes Incorporated in the United States and other countries.

© 2025 Diodes Incorporated. All Rights Reserved.

Note: Throughout this release, we refer to “net income attributable to common stockholders” as “net income.”

Note: Included in GAAP net income and non-GAAP adjusted net income was approximately $4.6 million, net of tax, non-cash share-based compensation expense. Excluding share-based compensation expense, both GAAP and non-GAAP diluted earnings per share would have improved by $0.10 per share.

Note: Included in GAAP net income and non-GAAP adjusted net income was approximately $3.4 million and $2.8 million respectively, net of tax, non-cash share-based compensation expense. Excluding share-based compensation expense, GAAP diluted earnings per share would have improved by $0.07 per share and non-GAAP diluted earnings per share would have improved by $0.06 per share.

Note: Included in GAAP net income and non-GAAP adjusted net income was approximately $9.6 million, net of tax, non-cash share-based compensation expense. Excluding share-based compensation expense, both GAAP and non-GAAP diluted earnings per share would have improved by $0.21 per share

ADJUSTED NET INCOME AND ADJUSTED EARNINGS PER SHARE

The Company’s financial statements present net income and earnings per share that are calculated using accounting principles generally accepted in the United States (“GAAP”). The Company’s management makes adjustments to the GAAP measures that it feels are necessary to allow investors and other readers of the Company’s financial releases to view the Company’s operating results as viewed by the Company’s management, board of directors and research analysts in the semiconductor industry. These non-GAAP measures are not prepared in accordance with, and should not be considered alternatives or necessarily superior to, GAAP financial data and may be different from non-GAAP measures used by other companies. Because non-GAAP financial measures are not standardized, it may not be possible to compare these financial measures with other companies’ non-GAAP financial measures, even if they have similar names. The explanation of the adjustments made in the table above, are set forth below:

Detail of non-GAAP adjustments

Amortization of acquisition-related intangible assets – The Company excluded this item, including amortization of developed technologies and customer relationships. The fair value of the acquisition-related intangible assets is amortized using straight-line methods which approximate the proportion of future cash flows estimated to be generated each period over the estimated useful life of the applicable assets. The Company believes that exclusion of this item is appropriate because a significant portion of the purchase price for its acquisitions was allocated to the intangible assets that have short lives and exclusion of the amortization expense allows comparisons of operating results that are consistent over time for both the Company’s newly acquired and long-held businesses. In addition, the Company excluded this item because there is significant variability and unpredictability among companies with respect to this expense.

Board member retirement – The Company excluded costs related to the retirement of a board member. These costs represent cash payments and the accelerated vesting of previously issued stock awards. The Company feels it is appropriate to exclude these costs since they don’t represent ongoing operating expenses and will present investors with a more accurate indication of our continuing operations.

Acquisition related costs – The Company excluded expenses associated with previous acquisitions of that typically consist of advisory, legal and other professional and consulting fees. These costs were expensed as they were incurred and as services were received, and in which the corresponding tax adjustments were made for the non-deductible portions of these expenses. The Company believes the exclusion of the acquisition related costs provides investors with a more accurate reflection of costs likely to be incurred in the absence of an unusual event such as an acquisition and facilitates comparisons with the results of other periods that may not reflect such costs.

Insurance recovery for manufacturing facility – The Company recorded gains related to insurance recovery for a manufacturing facility in Asia. The Company believes the exclusion of the insurance recovery provides investors with a more accurate reflection of the continuing operations of the Company and facilitates comparisons with the results of other periods which may not reflect such gains.

Unrealized gain on investments – The Company excluded unrealized mark-to-market adjustments on various equity related investments. The Company believes this is not reflective of the ongoing operations and exclusion of this provides investors an enhanced view of the Company’s operating results.

Restructuring charge – The Company recorded restructuring charges related to various locations. These restructuring charges are excluded from management’s assessment of the Company’s operating performance. The Company believes the exclusion of the restructuring charges provides investors an enhanced view of the cost structure of the Company’s operations and facilitates comparisons with the results of other periods that may not reflect such charges or may reflect different levels of such charges.

Gain of disposal of subsidiary – The Company excluded the gain on the disposal of a subsidiary. The Company believes this is not reflective of the ongoing operations and exclusion of this item provides investors an enhanced view of the Company’s operating results.

Impairment of equity investment – The Company excluded the impairment on equity investment. The Company believes this is not reflective of the ongoing operations and exclusion of this item provides investors an enhanced view of the Company’s operating results.

CASH FLOW ITEMS

Free cash flow (FCF) (Non-GAAP)

FCF for the second quarter of 2025 is a non-GAAP financial measure, which is calculated by subtracting capital expenditures from cash flow from operations. For the second quarter of 2025, FCF was $21.1million, which represents the cash and cash equivalents that we are able to generate after taking into account cash outlays required to maintain or expand property, plant and equipment. FCF is important because it allows us to pursue opportunities to develop new products, make acquisitions and reduce debt.

CONSOLIDATED RECONCILIATION OF NET INCOME TO EBITDA

EBITDA represents earnings before net interest expense, income tax provision, depreciation and amortization. Management believes EBITDA is useful to investors because it is frequently used by securities analysts, investors and other interested parties, such as financial institutions in extending credit, in evaluating companies in our industry and provides further clarity on our profitability. In addition, management uses EBITDA, along with other GAAP and non-GAAP measures, in evaluating our operating performance compared to that of other companies in our industry. The calculation of EBITDA generally eliminates the effects of financing, operating in different income tax jurisdictions, and accounting effects of capital spending, including the impact of our asset base, which can differ depending on the book value of assets and the accounting methods used to compute depreciation and amortization expense. EBITDA is not a recognized measurement under GAAP, and when analyzing our operating performance, investors should use EBITDA in addition to, and not as an alternative for, income from operations and net income, each as determined in accordance with GAAP. Because not all companies use identical calculations, our presentation of EBITDA may not be comparable to similarly titled measures used by other companies. For example, our EBITDA takes into account all net interest expense, income tax provision, depreciation and amortization without taking into account any amounts attributable to noncontrolling interest. Furthermore, EBITDA is not intended to be a measure of free cash flow for management’s discretionary use, as it does not consider certain cash requirements such as tax and debt service payments.

The following table provides a reconciliation of net income to EBITDA (in thousands, unaudited):

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