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Second Quarter 2026 Earnings Release

Exhibit 99.1

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RPC, Inc. Reports Second Quarter 2026 Financial Results

And Declares Regular Quarterly Cash Dividend

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ATLANTA, July 30, 2026 - RPC, Inc. (NYSE: RES) (“RPC” or the “Company”), a leading diversified oilfield services company, announced its unaudited results for the second quarter ended June 30, 2026.

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Non-GAAP and adjusted measures may include Adjusted operating income, Adjusted net income, Adjusted net income margin, Adjusted earnings per share (diluted), EBITDA and Adjusted EBITDA, Adjusted EBITDA margin, and Free cash flow which are reconciled to the most directly comparable GAAP measures in the appendices of this earnings release.

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Sequential comparisons are to 1Q:26. The Company thinks quarterly sequential comparisons are most useful in assessing industry trends and RPC’s recent financial results. Both sequential and year-over-year comparisons are available in the tables at the end of this earnings release.

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Second Quarter 2026 Highlights

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Revenues increased 1% sequentially to $460.9 million

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Net income was $12.1 million, compared to Net income of $0.9 million in the prior quarter, and diluted Earnings Per Share (EPS) was $0.05; Net income margin increased 240 basis points sequentially to 2.6%

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Adjusted net income was $17.8 million, compared to $7.6 million in the prior quarter, and Adjusted diluted EPS was $0.08; Adjusted net income margin was 3.9%. See Appendices B and C for additional details

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Adjusted Earnings Before Interest, Taxes, Depreciation and Amortization (EBITDA) was $66.0 million, compared to $53.5 million in the prior quarter; Adjusted EBITDA margin increased 250 basis points sequentially to 14.3%. See Appendix C for additional details

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The Board of Directors declared a regular quarterly cash dividend of $0.04 per share, payable on September 10, 2026, to common stockholders of record at the close of business on August 10, 2026

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Management Commentary

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“During the quarter our Technical Services segment experienced modest revenue increases. Within Technical Services, Cudd Pressure Controls’ Snubbing, Spinnaker’s Cementing, and Thru-Tubing Solutions’ Downhole Tools generated double-digit revenue increases, which were mostly offset by lower Pintail Wireline revenues. Our Support Services segment revenues were up 11% sequentially led by Patterson Rental Tools, which generated a 21% increase compared to the seasonally weak first quarter.”

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“During the second quarter we saw reasons for optimism with some improved pricing and activity visibility. This allowed us an opportunity to support targeted growth through a modest increase in CapEx. Oil price volatility keeps us cautious, but our balance sheet affords us the ability to invest opportunistically.”

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“As previously announced, after 30 years with RPC, I believe now is the right time to retire and transition to the Company's next generation of leadership. I am committed to working closely with the Board to ensure continuity and a smooth transition, leaving RPC well-positioned with strong brands, a solid balance sheet, and a disciplined focus on full cycle returns that drive long-term shareholder value. I am blessed to have spent the last three decades working with a wonderful and dedicated group of people,” stated Ben M. Palmer, RPC’s President and Chief Executive Officer.

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Second Quarter 2026 Earnings Release

Selected Industry Data (Source: Baker Hughes, Inc., U.S. Energy Information Administration)

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2Q:26 Consolidated Financial Results (sequential comparisons to previous quarter)

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Revenues were $460.9 million, up 1%. Within the Technical Services segment, revenues increased 1% sequentially, with increases in Snubbing, Cementing and Downhole Tools mostly offset by a decrease in Wireline revenues. Support Services segment revenues were up 11% primarily due to a 21% increase in Rental Tools.

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Cost of revenues, which excludes depreciation and amortization of $37.4 million, was $345.7 million, down from $355.6 million. Despite the increase in revenues, cost of revenues declined primarily due to improved job mix, specifically materials & supplies within Pressure Pumping.

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Selling, general and administrative expenses were $51.5 million, up from $48.2 million, primarily driven by higher professional and advisory fees.

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Acquisition related employment costs were approximately $7.3 million during 2Q:26, unchanged from 1Q:26, and represent non-cash accounting adjustments for costs related to the Pintail acquisition that are contingent upon continued employment.

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Depreciation and amortization was $43.0 million during 2Q:26, slightly up from the previous quarter.

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Interest income totaled $1.5 million, a decrease of 13% compared to the prior quarter. The decrease was due to a lower average cash balance which reflects a $20.0 million principal payment on the note payable related to the Pintail acquisition, made in early 2Q:26.

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Interest expense totaled $671 thousand, a decrease of 19% compared to the prior quarter, primarily due to the principal reduction of the note payable related to the Pintail acquisition.

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Income tax provision was $4.5 million, or 27.1% of income before income taxes. The effective tax rate was lower compared to previous quarter primarily due to the smaller impact of permanent adjustments on an increased pretax income.

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Net earnings and Diluted EPS totaled $12.1 million and $0.05 respectively, versus net income of $0.9 million and diluted earnings per share of $0.00, respectively, in 1Q:26. Net income margin increased 240 basis points sequentially to 2.6%.

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Adjusted net income and Adjusted diluted EPS were $17.8 million and $0.08, respectively, versus $7.6 million and $0.03, respectively, in 1Q:26. Adjusted net income margin increased to 3.9% compared to 1.7% in 1Q:26. See Appendix B for additional details.

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Adjusted EBITDA was $66.0 million, up 23.3% from $53.5 million in 1Q:26. Adjusted EBITDA margin increased 250 basis points sequentially to 14.3%. See Appendix C for additional details.

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Second Quarter 2026 Earnings Release

Balance Sheet, Cash Flow and Capital Allocation

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Cash and cash equivalents decreased to $179.5 million at the end of the second quarter compared to the end of 2025, primarily due to the $20.0 million principal payment on the note payable related to the Pintail acquisition. In the second quarter of 2026 the Company amended its credit agreement to, among other things, extend the maturity date for revolving loans from June 22, 2027, to June 30, 2031. The Company had no outstanding borrowings under the Company’s $100 million revolving credit facility during the quarter.

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Net cash provided by operating activities and Free cash flow were $74.6 million and $3.8 million, respectively, year-to-date through 2Q:26. Working capital was a significant use of cash during the quarter primarily due to higher accounts receivable resulting from increased customer activity and timing of collections.

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Payment of dividends totaled $17.7 million year-to-date. Additionally, the Board of Directors declared a regular quarterly cash dividend of $0.04 per share, payable on September 10, 2026, to common stockholders of record at the close of business on August 10, 2026.

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Share repurchases totaled $3.5 million year-to-date, all of which related to tax withholdings for restricted stock vesting.

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Segment Operations (sequential comparisons versus the previous quarter)

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Technical Services performs value-added completion, production and maintenance services directly to a customer’s well. These services include Pressure Pumping, Downhole Tools, Wireline, Coiled Tubing, Cementing, and other offerings.

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Revenues were $438.1 million, up 1%

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Operating income was $27.6 million, up $11.6 million or 73%

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Operating income saw increases across most of our service lines

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Support Services provides equipment for customer use or services to assist customer operations, including Rental Tools, pipe inspection services and storage.

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Revenues were $22.8 million, up 11%

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Operating income was $2.3 million, up $1.9 million

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Results were driven by higher activity in Rental Tools and the fixed-cost nature of this service line

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Second Quarter 2026 Earnings Release

Conference Call Information

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RPC, Inc. will hold a conference call today, July 30, 2026, at 9:00 a.m. ET to discuss the results for the quarter. Interested parties may listen in by accessing a live webcast in the investor relations section of RPC, Inc.’s website at www.rpc.net. The live conference call can also be accessed by calling (833) 461-5787, or +1 (585) 542-9983 for international callers, and using conference ID number 300-114-924. For those not able to attend the live conference call, a replay will be available in the investor relations section of RPC, Inc.’s website beginning approximately two hours after the call and for a period of 90 days.

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About RPC

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RPC provides a broad range of specialized oilfield services and equipment primarily to independent and major oilfield companies engaged in the exploration, production and development of oil and gas properties throughout the United States, including the Gulf of America, mid-continent, southwest, Appalachian and Rocky Mountain regions, and in selected international markets. RPC’s investor website can be found at www.rpc.net.

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Forward-Looking Statements

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Certain statements and information included in this press release constitute forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements generally relate to future events or performance and often can be identified by the use of words such as “may,” “will,” “should,” “could,” “anticipate,” “believe,” “estimate,” “expect,” “intend,” “plan,” “project,” “target,” “potential,” “continue,” or similar expressions. In particular, forward-looking statements in this press release include, without limitation, the Company’s statements regarding (i) “reasons for optimism” about its business, including improved pricing and activity visibility, (ii) the opportunity to “support targeted growth through a modest increase in CapEx,” (iii) the Company’s ability to “invest opportunistically” based on its balance sheet, and (iv) the Company being “well positioned” with strong brands, a strong balance sheet, and a disciplined focus on full cycle returns that drive long term shareholder value. These forward-looking statements are based on the Company’s current expectations and assumptions and are subject to a number of risks and uncertainties, many of which are beyond the Company’s control, that could cause actual results to differ materially from those expressed or implied by the forward-looking statements. These risks and uncertainties include, among others, changes in the price of oil and natural gas and the overall performance of the U.S. and global economies; levels of capital spending by our customers and the resulting demand for our services; the impact of tariffs and other trade actions, which may increase our cost of materials and affect our profitability; business interruptions due to adverse weather conditions or other natural or man-made disasters; changes in the competitive environment of our industry; political instability and geopolitical events in petroleum-producing regions of the world, including actions by the United States or other governments, such as the recent actions by the United States in Iran and Venezuela, and any related sanctions or disruptions of key transportation routes such as the Strait of Hormuz; actions of OPEC and other oil producing nations; our customers’ drilling and production activities; and our ability to identify, consummate and successfully integrate acquisitions and/or other strategic investments or transactions. Additional factors that could cause actual results to differ materially from management’s projections, forecasts, estimates and expectations are described under “Risk Factors,” “Forward-Looking Statements” and elsewhere in the Company’s Annual Report on Form 10-K for the year ended December 31, 2025, and in other reports and filings with the Securities and Exchange Commission. Forward-looking statements speak only as of the date of this press release, and readers are cautioned not to place undue reliance on such statements. The Company undertakes no obligation to publicly update or revise any forward-looking statements after the date of this press release, whether as a result of new information, future events or otherwise, except as required by applicable law.

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Second Quarter 2026 Earnings Release

For information about RPC, Inc., please contact:

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Joshua Large,

Vice President, Corporate Finance and Investor Relations

(404) 321-2152

jlarge@rpc.net

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Michael L. Schmit,

Chief Financial Officer

(404) 321-2140

irdept@rpc.net

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RPC INCORPORATED AND SUBSIDIARIES

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CONSOLIDATED STATEMENTS OF OPERATIONS (In thousands except per share data)

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Second Quarter 2026 Earnings Release

RPC INCORPORATED AND SUBSIDIARIES

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CONSOLIDATED BALANCE SHEETS

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Second Quarter 2026 Earnings Release

RPC INCORPORATED AND SUBSIDIARIES

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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

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Non-GAAP Measures

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RPC, Inc. has used the non-GAAP financial measures of Adjusted operating income, Adjusted net income, Adjusted net income margin, Adjusted earnings per share, Adjusted EBITDA, Adjusted EBITDA margin and free cash flow in today's earnings release. These measures should not be considered in isolation or as a substitute for performance or liquidity measures prepared in accordance with GAAP. Management believes that presenting these non-GAAP measures, other than free cash flow, enables investors to compare the operating performance of our core business consistently over various time periods, without regard to acquisition related employment costs and changes in our accounting for purchases of wireline cables, and in the case of Adjusted EBITDA and Adjusted EBITDA margin, without regard to changes in our capital structure. Management believes that free cash flow, which measures our ability to generate additional cash from our business operations, is an important financial measure for use in evaluating RPC's liquidity. Free cash flow should be considered in addition to, rather than as a substitute for, net cash provided by operating activities as a measure of our liquidity. Additionally, RPC’s definition of free cash flow is limited, in that it does not represent residual cash flows available for discretionary expenditures, due to the fact that the measure does not deduct the payments required for debt service and other contractual obligations or payments made for business acquisitions. Therefore, management believes it is important to view free cash flow as a measure that provides supplemental information to our Condensed Consolidated Statements of Cash Flows.

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A non-GAAP financial measure is a numerical measure of financial performance, financial position, or cash flows that either 1) excludes amounts, or is subject to adjustments that have the effect of excluding amounts,

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that are included in the most directly comparable measure calculated and presented in accordance with GAAP in the statement of operations, balance sheet or statement of cash flows, or 2) includes amounts, or is subject to adjustments that have the effect of including amounts, that are excluded from the most directly comparable measure so calculated and presented.

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Set forth in the appendices below are reconciliations of these non-GAAP measures with their most directly comparable GAAP measures. These reconciliations also appear on RPC, Inc.'s investor website, which can be found at www.rpc.net.

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Appendix A

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⁽¹⁾ Beginning in the fourth quarter of 2025, wireline cables, previously capitalized and depreciated over 18 months, began being expensed due to a change in their estimated useful lives.

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Appendix B

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⁽¹⁾ Beginning in the fourth quarter of 2025, wireline cables, previously capitalized and depreciated over 18 months, began being expensed due to a change in their estimated useful lives.

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Second Quarter 2026 Earnings Release

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⁽¹⁾ Adjusted diluted earnings per share may not equal the sum of Diluted earnings per share plus the Total adjustments, net of tax due to rounding.

⁽²⁾ Beginning in the fourth quarter of 2025, wireline cables, previously capitalized and depreciated over 18 months, began being expensed due to a change in their estimated useful lives.

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Appendix C

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⁽¹⁾ Net income margin is calculated as Net income divided by Revenues. Adjusted net income margin is calculated as Adjusted net income divided by Revenues. Adjusted EBITDA margin is calculated as Adjusted EBITDA divided by Revenues.

⁽²⁾ Beginning in the fourth quarter of 2025, wireline cables, previously capitalized and depreciated over 18 months, began being expensed due to a change in their estimated useful lives.