Exhibit 99.1

2858 De La Cruz Boulevard, Santa Clara CA 95050 USA

+1.408.280.7900 www.pdf.com

News Release


Company Contacts:
Adnan Raza		Sonia Segovia
Chief Financial Officer		Investor Relations
Tel: (408) 516-0237		Tel: (408) 938-6491
Email: [email protected]		Email: [email protected]

PDF Solutions® Reports Fourth Quarter and Full Year 2023 Results

Santa Clara, CA, February 15, 2024, – PDF Solutions, Inc. (Nasdaq: PDFS), a leading provider of comprehensive data solutions for the semiconductor ecosystem, today announced financial results for its fourth quarter and year ended December 31, 2023.

Financial Highlights of Fourth Quarter 2023

●

Analytics revenues of $39.1 million, up 9% over last year’s comparable quarter

●

Quarterly revenues of $41.1 million, up slightly over last year’s comparable quarter

●

GAAP gross margin of 68% and Non-GAAP gross margin of 72%

●

GAAP diluted earnings per share of $0.02 and non-GAAP diluted earnings per share of $0.15

Financial Highlights of Full Year 2023

●

Analytics revenues of $152.1 million, up 17% over last year

●

Record total full year revenues of $165.8 million, up 12% over last year

●

GAAP gross margin of 69% and Non-GAAP gross margin of 73%

●

GAAP diluted earnings per share of $0.08 and non-GAAP diluted earnings per share of $0.73

●

Cash, cash equivalents and short-term investments of $135.5 million

Total revenues for the fourth quarter of 2023 were $41.1 million, compared to $42.4 million for the third quarter of 2023 and $40.5 million for the fourth quarter of 2022. Analytics revenue for the fourth quarter of 2023 was $39.1 million, compared to $39.5 million for the third quarter of 2023 and $36.1 million for the fourth quarter of 2022. Integrated Yield Ramp revenue for the fourth quarter of 2023 was $2.0 million, compared to $2.9 million for the third quarter of 2023 and $4.5 million for the fourth quarter of 2022. Total revenues for the full year 2023 and 2022 were $165.8 million and $148.5 million, respectively.

GAAP gross margin for the fourth quarter of 2023 was 68%, compared to 66% for the third quarter of 2023 and 71% for the fourth quarter of 2022. GAAP gross margin for the full year 2023 and 2022 was 69% and 68%, respectively.

Non-GAAP gross margin for the fourth quarter of 2023 was 72%, compared to 70% for the third quarter of 2023 and 74% for the fourth quarter of 2022. Non-GAAP gross margin for the full year 2023 and 2022 was 73% and 71%, respectively.

On a GAAP basis, net income for the fourth quarter of 2023 was $0.9 million, or $0.02 per diluted share, compared to a net loss of $5.0 million, or ($0.13) per diluted share, for the third quarter of 2023, and a net income of $0.5 million, or $0.01 per diluted share, for the fourth quarter of 2022. On a GAAP basis, net income for the full year 2023 was $3.1 million, or $0.08 per diluted share, compared to a net loss of $3.4 million, or ($0.09) per diluted share, for the full year 2022.

Non-GAAP net income for the fourth quarter of 2023 was $5.7 million, or $0.15 per diluted share, compared to a non-GAAP net income of $8.0 million, or $0.20 per diluted share, for the third quarter of 2023, and non-GAAP net income of $7.4 million, or $0.19 per diluted share, for the fourth quarter of 2022. Non-GAAP net income for the full year 2023 was $28.5 million, or $0.73 per diluted share, compared to a non-GAAP net income of $22.9 million, or $0.60 per diluted share, for the full year 2022.

Cash, cash equivalents and short-term investments as of December 31, 2023 were $135.5 million.

PDF Solutions® Reports Fourth Quarter and Full Year 2023 Results

Information Regarding Use of Non-GAAP Financial Measures

In addition to providing results that are determined in accordance with Generally Accepted Accounting Principles in the United States of America (“GAAP”), PDF Solutions also provides certain non-GAAP financial measures. Non-GAAP gross profit and margin exclude stock-based compensation expense and the amortization of acquired technology. Non-GAAP net income excludes stock-based compensation expense, amortization of acquired technology and other acquired intangible assets, and the effects of certain non-recurring items, such as expenses related to an arbitration proceeding for a disputed contract with a customer, acquisition-related costs, proceeds from the sale of previously written-off property and equipment, and their related income tax effects, as applicable, as well as adjustments for the valuation allowance for deferred tax assets. These non-GAAP financial measures are used by management internally to measure the Company’s profitability and performance. PDF Solutions’ management believes that these non-GAAP measures provide useful supplemental information to investors regarding the Company’s ongoing operations in light of the fact that none of these categories of expense has a current effect on the future uses of cash (with the exception of expenses related to an arbitration proceeding for a disputed contract with a customer and acquisition-related costs) nor do they impact the generation of current or future revenues. These non-GAAP results should not be considered an alternative to, or a substitute for, GAAP financial information, and may differ from similarly titled non-GAAP measures used by other companies. In particular, these non-GAAP financial measures are not a substitute for GAAP measures of income or loss as a measure of performance, or to cash flows from operating, investing and financing activities as a measure of liquidity. Since management uses these non-GAAP financial measures internally to measure profitability and performance, PDF Solutions has included these non-GAAP measures to give investors an opportunity to see the Company’s financial results as viewed by management. A reconciliation of the comparable GAAP financial measures to the non-GAAP financial measures is provided at the end of the Company’s condensed consolidated financial statements presented below.

Forward-Looking Statements

The press release and the planned conference call include forward-looking statements regarding the Company’s future expected business performance and financial results, including expectations about total revenue growth for 2024, that are subject to future events and circumstances. Actual results could differ materially from those expressed in these forward-looking statements. Risks and uncertainties that could cause results to differ materially include, but are not limited to, risks associated with: expectations about the effectiveness of our business and technology strategies; expectations and integration concerns regarding recent and future acquisitions; current semiconductor industry trends; expectations of continued adoption of the Company’s solutions by new and existing customers; project milestones or delays and performance criteria achieved; cost and schedule of new product development; the impact of global economic trends and rising inflation and interest rates; supply chain disruptions; the success of the Company’s strategic growth opportunities and partnerships; customers’ production volumes under contracts that provide Gainshare royalties; possible impacts from the evolving trade regulatory environment and geopolitical tensions; and other risks set forth in PDF Solutions’ periodic public filings with the Securities and Exchange Commission, including, without limitation, its Annual Report on Form 10-K for the year ended December 31, 2022, Quarterly Reports on Form 10-Q, and Current Reports on Form 8-K and amendments to such reports. The forward-looking statements made in the conference call are made as of the date hereof, and PDF Solutions does not assume any obligation to update such statements nor the reasons why actual results could differ materially from those projected in such statements. The Company has not filed its Form 10-K for the year ended December 31, 2023. As a result, all financial results described in this earnings release should be considered preliminary, and are subject to change to reflect any necessary adjustments or changes in accounting estimates, that are identified prior to the time the Company files its Form 10-K.

About PDF Solutions

PDF Solutions (NASDAQ: PDFS) provides comprehensive data solutions designed to empower organizations across the semiconductor and electronics ecosystem to improve the yield and quality of their products and operational efficiency for increased profitability. The Company’s products and services are used by Fortune 500 companies across the semiconductor and electronics ecosystem to achieve smart manufacturing goals by connecting and controlling equipment, collecting data generated during manufacturing and test operations, and performing advanced analytics and machine learning to enable profitable, high-volume manufacturing.

Founded in 1991, PDF Solutions is headquartered in Santa Clara, California, with operations across North America, Europe, and Asia. The Company (directly or through one or more subsidiaries) is an active member of SEMI, INEMI, TPCA, IPC, the OPC Foundation, and DMDII. For the latest news and information about PDF Solutions or to find office locations, visit https://www.pdf.com.

PDF Solutions and the PDF Solutions logo are trademarks or registered trademarks of PDF Solutions, Inc. or its subsidiaries.

PDF Solutions® Reports Fourth Quarter and Full Year 2023 Results

PDF SOLUTIONS, INC.

CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED)

(In thousands)


	December 31,
	2023		2022

ASSETS
Current assets:
Cash and cash equivalents	$	98,978	$	119,624
Short-term investments		36,544		19,557
Accounts receivable, net		44,904		42,164
Prepaid expenses and other current assets		17,422		12,063
Total current assets		197,848		193,408
Property and equipment, net		37,338		40,174
Operating lease right-of-use assets, net		4,926		6,002
Goodwill		15,029		14,123
Intangible assets, net		15,620		18,055
Deferred tax assets, net		157		64
Other non-current assets		19,218		6,845
Total assets	$	290,136	$	278,671

LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Accounts payable	$	2,561	$	6,388
Accrued compensation and related benefits		14,800		16,948
Accrued and other current liabilities		4,633		5,581
Operating lease liabilities ‒ current portion		1,529		1,412
Deferred revenues ‒ current portion		25,750		26,019
Billings in excess of recognized revenues		1,570		1,852
Total current liabilities		50,843		58,200
Long-term income taxes		2,972		2,622
Non-current operating lease liabilities		4,657		5,932
Other non-current liabilities		2,718		1,905
Total liabilities		61,190		68,659

Stockholders’ equity:
Common stock and additional paid-in capital		473,301		447,421
Treasury stock at cost		(143,923)		(133,709)
Accumulated deficit		(98,045)		(101,150)
Accumulated other comprehensive loss		(2,387)		(2,550)
Total stockholders’ equity		228,946		210,012
Total liabilities and stockholders’ equity	$	290,136	$	278,671

PDF Solutions® Reports Fourth Quarter and Full Year 2023 Results

PDF SOLUTIONS, INC.

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED)

(In thousands, except per share amounts)


	Three months ended						Year ended
	December 31,		September 30,		December 31,		December 31,		December 31,
	2023		2023		2022		2023		2022

Revenues:
Analytics	$	39,128	$	39,497	$	36,058	$	152,085	$	130,480
Integrated yield ramp		1,997		2,853		4,465		13,750		18,069
Total revenues		41,125		42,350		40,523		165,835		148,549

Costs and Expenses:
Costs of revenues		13,194		14,282		11,791		51,749		47,907
Research and development		12,308		13,113		14,360		50,736		56,126
Selling, general, and administrative		16,194		15,611		12,724		62,216		45,338
Amortization of acquired intangible assets		306		328		324		1,285		1,270
Interest and other expense (income), net		(1,020)		(2,018)		250		(5,020)		(2,562)
Income before income taxes		143		1,034		1,074		4,869		470
Income tax benefit (expense)		744		(6,006)		(591)		(1,764)		(3,899)
Net income (loss)	$	887	$	(4,972)	$	483	$	3,105	$	(3,429)

Net income (loss) per share:
Basic	$	0.02	$	(0.13)	$	0.01	$	0.08	$	(0.09)
Diluted	$	0.02	$	(0.13)	$	0.01	$	0.08	$	(0.09)

Weighted average common shares used to calculate net income (loss) per share:
Basic		38,269		38,187		37,379		38,015		37,309
Diluted		38,814		38,187		38,276		38,937		37,309

PDF Solutions® Reports Fourth Quarter and Full Year 2023 Results

PDF SOLUTIONS, INC.

RECONCILIATION OF GAAP GROSS MARGIN TO NON-GAAP GROSS MARGIN (UNAUDITED)

(In thousands)


	Three months ended									Year ended
	December 31,			September 30,			December 31,			December 31,			December 31,
	2023			2023			2022			2023			2022

GAAP
Total revenues	$	41,125		$	42,350		$	40,523		$	165,835		$	148,549
Costs of revenues		13,194			14,282			11,791			51,749			47,907
GAAP gross profit	$	27,931		$	28,068		$	28,732		$	114,086		$	100,642
GAAP gross margin		68	%		66	%		71	%		69	%		68	%

Non-GAAP
GAAP gross profit	$	27,931		$	28,068		$	28,732		$	114,086		$	100,642
Adjustments to reconcile GAAP to non-GAAP gross margin:
Stock-based compensation expense		1,147			1,120			737			4,169			2,974
Amortization of acquired technology		586			574			553			2,266			2,213
Non-GAAP gross profit	$	29,664		$	29,762		$	30,022		$	120,521		$	105,829
Non-GAAP gross margin		72	%		70	%		74	%		73	%		71	%

PDF Solutions® Reports Fourth Quarter and Full Year 2023 Results

PDF SOLUTIONS, INC.

RECONCILIATION OF GAAP NET INCOME (LOSS) TO NON-GAAP NET INCOME (UNAUDITED)

(In thousands, except per share amounts)


	Three months ended						Year ended
	December 31,		September 30,		December 31,		December 31,		December 31,
	2023		2023		2022		2023		2022

GAAP net income (loss)	$	887	$	(4,972)	$	483	$	3,105	$	(3,429)
Adjustments to reconcile GAAP net income (loss) to non-GAAP net income:
Stock-based compensation expense		5,923		5,999		5,088		21,484		19,649
Amortization of acquired technology under costs of revenues		586		574		553		2,266		2,213
Amortization of other acquired intangible assets		306		328		325		1,285		1,270
Expenses of arbitration (1)		75		226		852		2,600		1,895
Acquisition-related costs (2)		—		33		—		209		—
Proceeds from the sale of previously written-off property and equipment		—		(105)		—		(105)		—
Tax impact of valuation allowance for deferred tax assets and reconciling items (3)		(2,060)		5,904		98		(2,374)		1,326
Non-GAAP net income	$	5,717	$	7,987	$	7,399	$	28,470	$	22,924

GAAP net income (loss) per diluted share	$	0.02	$	(0.13)	$	0.01	$	0.08	$	(0.09)
Non-GAAP net income per diluted share	$	0.15	$	0.20	$	0.19	$	0.73	$	0.60

Weighted average common shares used in GAAP net income (loss) per diluted share calculation		38,814		38,187		38,276		38,937		37,309
Weighted average common shares used in non-GAAP net income per diluted share calculation		38,814		38,992		38,276		38,937		38,130

(1)	Represents expenses related to an arbitration proceeding over a disputed customer contract, which expenses are expected to continue until the arbitration is resolved.

(2)	Acquisition-related costs are incremental expenses related to business or asset acquisition transaction(s). These expenses may include consulting, legal and other fees. For the year ended December 31, 2023, the charges were related to the acquisition of Lantern Machinery Analytics, Inc.

(3)

The difference between the GAAP and non-GAAP income tax provisions is primarily due to the valuation allowance on a GAAP basis and non-GAAP adjustments. For example, on a GAAP basis, the Company does not receive a deferred tax benefit for foreign tax credits or research and development credits after the valuation allowance. The Company’s non-GAAP tax rate and resulting non-GAAP tax expense is not calculated with a full U.S. federal or state valuation allowance due to the Company’s cumulative non-GAAP income and management’s conclusion that it is more likely than not to utilize its net deferred tax assets (DTAs). Each reporting period, management evaluates the need for a valuation allowance and may place a valuation allowance against its U.S. net DTAs on a non-GAAP basis if it concludes it is more likely than not that it will not be able to utilize some or all of its U.S. DTAs on a non-GAAP basis.