Exhibit 99.1

Drilling Tools International Corp. Reports 2025 First Quarter Results

Board Authorizes a $10 Million Share Repurchase Program

HOUSTON — May 13, 2025 — Drilling Tools International Corp., (NASDAQ: DTI) (“DTI” or the “Company”), a global oilfield services company that designs, engineers, manufactures and provides a differentiated, rental-focused offering of tools for use in onshore and offshore horizontal and directional drilling operations, as well as other cutting-edge solutions across the well life cycle, today reported its results for the three months ended March 31, 2025.

DTI generated total consolidated revenue of $42.9 million in the first quarter of 2025. First quarter Tool Rental revenue was approximately $34.5 million and Product Sales revenue totaled $8.3 million. Total Operating Expenses were $39.6 million and Operating Income was $3.3 million. Net Loss for the first quarter was approximately $1.7 million and Adjusted Net Income(1) for the quarter was $0.7 million. Diluted EPS and Adjusted Diluted EPS(1) for the first quarter were a loss of $0.05 per share and an income of $0.02 per share, respectively. First quarter Adjusted EBITDA(1) was $10.8 million and Adjusted Free Cash Flow(1)(2) was $5.7 million. As of March 31, 2025, DTI had approximately $2.8 million of cash and cash equivalents and net debt of $52.1 million.

Wayne Prejean, President and Chief Executive Officer of DTI, stated, “We are pleased to report strong 2025 first quarter sequential and year-over-year revenue growth and solid Adjusted EBITDA results in spite of industry headwinds. Revenue grew 7.6% sequentially and 16% over last year’s first quarter. Adjusted EBITDA was essentially flat sequentially and grew nearly 18% over last year.

“Looking to the near term, we have yet to experience tangible disruptions to our forecast for our rental tools or the sale of our tools,” added Prejean. “However, we do see increased volatility and uncertainty in the marketplace due to the potential impacts of tariffs, recession fears that could lower demand for hydrocarbons, and OPEC+’s decision to increase production, to name a few. In anticipation of any prospective disruptions, we have implemented a new program to cut expenses by approximately $6 million this year and have contingency plans to cut more costs if necessary.

“While we cannot control global economic forces, we do believe that our input costs are fairly insulated from the increase in the costs associated with any tariff risks for three reasons: 1) DTI has a strong US manufacturing base; 2) our international footprint and diverse supply chain allows us flexibility in the face of uncertainty; and 3) should a significant reduction in rig count come, we are prepared to significantly curtail planned growth capital expenditures,” said Prejean. “We remain committed to identifying cost reduction opportunities and maintaining operational agility to quickly respond to a challenging environment, now or in the future, to enhance shareholder value.

“Based on this current volatility and market uncertainty, we feel it is prudent to adjust our annual Revenue, Adjusted EBITDA, and Adjusted Free Cash Flow guidance ranges as follows:

Updated 2025 Full Year Outlook

Board Authorizes a $10 Million Repurchase Program

Prejean added, “Our disciplined capital allocation strategy prioritizes financial strength through maintenance and organic growth capital investment, strategic acquisitions, and now a return of capital program to enhance shareholder value. We firmly believe that our common stock is undervalued and is an attractive investment opportunity within our overall capital allocation strategy.”

DTI announced today that its board of directors (the “Board”) recently authorized a repurchase program under which the Company may repurchase its outstanding shares of its common stock up to $10 million. The Board’s decision to initiate this program reflects its confidence in the Company’s long-term strategy and financial health. By repurchasing shares, DTI aims to enhance shareholder value in several ways, including optimizing its capital structure and demonstrating a commitment to returning excess capital to shareholders, providing the Company with flexibility to manage its equity base efficiently. The Board will periodically review the program and may adjust the amount and timing of repurchases based on market conditions, business outlook, and other factors relevant to the Company’s financial position and strategic priorities.

Under the share repurchase program, the Company intends to repurchase shares through open-market, round lot of block transactions, in privately negotiated, off-market purchases or otherwise in accordance with applicable federal and state securities laws, including Rule 10b-18 of the Securities Exchange Act of 1934 (the “Exchange Act”). Information regarding share repurchases will be available in the Company’s periodic reports on Form 10-Q and 10-K filed with the Securities and Exchange Commission as required by the applicable rules of the Exchange Act.

2025 First Quarter Conference Call Information

DTI's 2025 first quarter conference call can be accessed live via dial-in or webcast on Wednesday, May 14, 2025 at 10:00 a.m. Eastern Time (9:00 a.m. Central Time) by dialing 201-389-0869 and asking for the DTI call at least 10 minutes prior to the start time, or via live webcast by logging onto the webcast at this URL address: https://investors.drillingtools.com/news-events/events. An audio replay will be available through May 21, 2025 by dialing 201-612-7415 and using passcode 13753220#. Also, an archive of the webcast will be available shortly after the call at https://investors.drillingtools.com/news-events/events for 90 days. Please submit any questions for management prior to the call via email to [email protected].

About Drilling Tools International Corp.

DTI is a Houston, Texas based leading oilfield services company that manufactures and rents downhole drilling tools used in horizontal and directional drilling of oil and natural gas wells. With roots dating back to 1984, DTI operates from 15 service and support centers across North America and maintains 11 international service and support centers across the EMEA and APAC regions. To learn more about DTI, please visit: www.drillingtools.com.

Contact:

DTI Investor Relations

Ken Dennard / Rick Black

[email protected]

Forward-Looking Statements

This press release may include, and oral statements made from time to time by representatives of the Company may include, “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Statements regarding the business combination and the financing thereof, and related matters, as well as all other statements other than statements of historical fact included in this press release are forward-looking statements. The words “anticipate,” “believe,” “continue,” “could,” “estimate,” “expect,” “intends,” “may,” “might,” “plan,” “possible,” “potential,” “predict,” “project,” “should,” “will,” “would” and similar expressions may identify forward-looking statements, but the absence of these words does not mean that a statement is not forward looking. These forward-looking statements include, but are not limited to, statements regarding DTI and its management team’s expectations, hopes, beliefs, intentions or strategies regarding the future. In addition, any statements that refer to projections, forecasts or other characterizations of future events or circumstances, including any underlying assumptions, are forward-looking statements. Forward looking statements in this press release may include, for example,

statements about: (1) the demand for DTI’s products and services, which is influenced by the general level activity in the oil and gas industry; (2) DTI’s ability to retain its customers, particularly those that contribute to a large portion of its revenue; (3) DTI’s ability to employ and retain a sufficient number of skilled and qualified workers, including its key personnel; (4) DTI’s ability to source tools and raw materials at a reasonable cost; (5) DTI’s ability to market its services in a competitive industry; (6) DTI’s ability to execute, integrate and realize the benefits of acquisitions, and manage the resulting growth of its business; (7) potential liability for claims arising from damage or harm caused by the operation of DTI’s tools, or otherwise arising from the dangerous activities that are inherent in the oil and gas industry; (8) DTI’s ability to obtain additional capital; (9) potential political, regulatory, economic and social disruptions in the countries in which DTI conducts business, including changes in tax laws or tax rates; (11) DTI’s dependence on its information technology systems, in particular Customer Order Management Portal and Support System, for the efficient operation of DTI’s business; (11) DTI’s ability to comply with applicable laws, regulations and rules, including those related to the environment, greenhouse gases and climate change; (12) DTI’s ability to maintain an effective system of disclosure controls and internal control over financial reporting; (13) the potential for volatility in the market price of DTI’s common stock; (14) the impact of increased legal, accounting, administrative and other costs incurred as a public company, including the impact of possible shareholder litigation; (15) the potential for issuance of additional shares of DTI’s common stock or other equity securities; (16) DTI’s ability to maintain the listing of its common stock on Nasdaq; and (17) other risks and uncertainties separately provided to you and indicated from time to time described in in DTI’s most recent Forms 10-K, 10-Q and 8-K filed with or furnished to the Securities and Exchange Commission (the “SEC”). You should carefully consider the risks and uncertainties including those described in Part I, Item 1A – “Risk Factors” of our Annual Report on Form 10-K filed on March 14, 2025 and in comparable “Risk Factor” sections of our Quarterly Reports on Form 10-Q filed after such Form 10-K. Such forward-looking statements are based on the beliefs of management of DTI, as well as assumptions made by, and information currently available to DTI’s management and are subject to numerous conditions, many of which are beyond the control of DTI. Actual results could differ materially from those contemplated by the forward-looking statements as a result of certain factors detailed in DTI’s most recent Forms 10-K, 10-Q and 8-K filed with or furnished to the SEC. All subsequent written or oral forward-looking statements attributable to the Company or persons acting on its behalf are qualified in their entirety by this paragraph. The Company undertakes no obligation to update these statements for revisions or changes after the date of this release, except as required by law.

Non-GAAP Financial Measures

This release includes Adjusted EBITDA, Adjusted Free Cash Flow, Net Debt and Adjusted Net Income measures. Each of the metrics are “non-GAAP financial measures” as defined in Regulation G of the Securities Exchange Act of 1934.

Adjusted EBITDA is a supplemental non-GAAP financial measure that is used by management and external users of our financial statements, such as industry analysts, investors, lenders and rating agencies. Adjusted EBITDA is not a measure of net earnings or cash flows as determined by GAAP. We define Adjusted EBITDA as net earnings (loss) before interest, taxes, depreciation and amortization, further adjusted for (i) goodwill and/or long-lived asset impairment charges, (ii) stock-based compensation expense, (iii) restructuring charges, (iv) transaction and integration costs related to acquisitions and (v) other expenses or charges to exclude certain items that we believe are not reflective of ongoing performance of our business.

We believe Adjusted EBITDA is useful because it allows us to supplement the GAAP measures in order to more effectively evaluate our operating performance and compare the results of our operations from period to period without regard to our financing methods or capital structure. We exclude the items listed above in arriving at Adjusted EBITDA because these amounts can vary substantially from company to company within our industry depending upon accounting methods and book values of assets, capital structures and the method by which the assets were acquired. Adjusted EBITDA should not be considered as an alternative to, or more meaningful than, net income as determined in accordance with GAAP, or as an indicator of our operating performance or liquidity. Certain items excluded from Adjusted EBITDA are significant components in understanding and assessing a company’s financial performance, such as a company’s cost of capital and tax structure, as well as the historic costs of depreciable assets, none of which are components of Adjusted EBITDA. Our computations of Adjusted EBITDA may not be comparable to other similarly titled measures of other companies.

Adjusted Free Cash Flow is a supplemental non-GAAP financial measure, and we define Adjusted Free Cash Flow as Adjusted EBITDA less Gross Capital Expenditures. We use Adjusted Free Cash Flow as a financial performance measure used for planning, forecasting, and evaluating our performance. We believe that Adjusted Free Cash Flow is useful to enable investors and others to perform comparisons of current and historical performance of the Company. As a performance measure, rather than a liquidity measure, the most closely comparable GAAP measure is net income (loss).

Net Debt is a supplemental non-GAAP financial measure, and we define Net Debt as total debt less cash and cash equivalents. We use Net Debt to determine our outstanding debt obligations that would not be readily satisfied by our cash and cash equivalents on hand. We believe this metric is useful to analysts and investors in determining our leverage position since we have the ability to, and may decide to, use a portion of our cash and cash equivalents to reduce debt.

We define Adjusted Net Income (Loss) as consolidated net income (loss) adjusted for (i) goodwill and/or long-lived asset impairment charges, (ii) restructuring charges, (iii) transaction and integration costs related to acquisitions, (iv) income taxes expense which is calculated by applying our effective tax rate on unadjusted net income to adjusted pre-tax income, and (v) other expenses or charges to exclude certain items that we believe are not reflective of the ongoing performance of our business. We believe Adjusted Net Income (Loss) is useful because it allows us to exclude non-recurring items in evaluating our operating performance.

We define Adjusted Diluted Earnings (Loss) per share as the quotient of adjusted net income (loss) and diluted weighted average common shares. We believe that Adjusted Diluted Earnings (Loss) per share provides useful information to investors because it allows us to exclude non-recurring items in evaluating our operating performance on a diluted per share basis.

The following tables present a reconciliation of the non-GAAP financial measures of Adjusted EBITDA, Adjusted Free Cash Flow and Adjusted Net Income to the most directly comparable GAAP financial measures for the periods indicated: