Exhibit 99.1 1999 Bryan Street, Suite 3500 Dallas, Texas 75201 1.214.583.8500 Press Release FOR IMMEDIATE RELEASE November 20, 2025 1 Jacobs Reports Strong Fiscal Fourth Quarter and Fiscal Year 2025 Earnings Gross Revenue Grew 6.6% y/y, Adj. Net Revenue Grew 5.8% y/y in Fiscal Fourth Quarter 2025 Backlog Reached New Record with TTM Book-to-Bill Ratio of 1.1x Returned a Record $1.1 billion Through Repurchases and Dividends in Fiscal 2025 Fiscal 2026 Guidance for 16% Growth in Adj. EPS, at Midpoint DALLAS - Jacobs Solutions Inc. (NYSE: J) today announced its financial results for the fiscal fourth quarter and fiscal year ended September 26, 2025. Q4 2025 Financial Highlights 1 : • Gross revenue of $3.2 billion up 6.6% y/y; adjusted net revenue 2 of $2.2 billion up 5.8% y/y • GAAP net earnings of $138 million decreased (55.4)% y/y, impacted by mark-to-market gains/losses in the comparable period from our previous stake in Amentum stock; adjusted EBITDA 2 of $324 million increased 12.0% y/y • GAAP EPS of $1.05 decreased (55.9)% y/y; adjusted EPS 2 of $1.75 increased 27.7% y/y • Backlog of $23.1 billion, up 5.6% y/y; Q4 book-to-bill of 1.1x (1.1x TTM) Fiscal Year 2025 Financial Highlights 1 : • Gross revenue of $12.0 billion up 4.6% y/y; adjusted net revenue 2 of $8.7 billion up 5.3% y/y • GAAP net earnings of $313 million decreased (48.9)% y/y, impacted by mark-to-market gains/losses in the comparable period from our previous stake in Amentum stock; adjusted EBITDA 2 of $1.2 billion increased 13.9% y/y • GAAP EPS of $2.58 decreased (46.1)% y/y; adjusted EPS 2 of $6.12 increased 15.9% y/y • Cash conversion and reported free cash flow conversion 2 exceeded 100% Jacobs' Chair and CEO Bob Pragada commented, "We are pleased to have met or exceeded all our key metrics for FY25. We grew revenue organically mid-single-digits year-over-year and expanded our operating margin meaningfully. The Life Sciences, Data Center, Water, Energy & Power and Transportation sectors drove Infrastructure & Advanced Facilities' (I&AF) revenue growth in FY25, and we anticipate these sectors will remain strong in FY26 and beyond. Additionally, PA Consulting saw revenue growth accelerate during the fiscal year, contributing positively to consolidated results. We enter FY26 with multiple secular tailwinds, clear line-of-sight to continued synergistic expansion with PA Consulting and a record backlog, positioning us for profitable growth." Jacobs’ CFO Venk Nathamuni added, "We exited the first year of our strategy cycle above the high-end of the annual 50-80 basis point margin expansion target we established at our February Investor Day, and we are forecasting further margin improvement in FY26. We delivered a record $1.1 billion of capital back to shareholders during FY25 through share repurchases and dividends, and we plan to continue returning capital to shareholders given the strength of our balance sheet and our outlook for cash generation. We are starting FY26 with a record backlog, and we anticipate growth in revenue, margins, EPS and free cash flow for the full fiscal year.” Financial Outlook 3 The Company’s outlook for fiscal 2026 is for adjusted net revenue to grow 6% to 10% over fiscal 2025, adjusted EBITDA margin to range from 14.4% to 14.7%, adjusted EPS to range from $6.90 to $7.30 and for free cash flow margin to range from 7.0% to 8.0%. 1 All data reflects continuing operations only. 2 See Non-GAAP Financial Measures and Operating Metrics, and GAAP Reconciliations at the end of the press release for additional detail . 3 Reconciliation of fiscal 2026 adjusted EBITDA margin, adjusted EPS and expectations for adjusted net revenue growth and reported free cash flow margin to the most directly comparable GAAP measure is not available without unreasonable efforts because the Company cannot predict with sufficient certainty all the components required to provide such reconciliation, including with respect to the costs and charges relating to transaction expenses, restructuring and integration to be incurred in fiscal 2026. 2 Fourth Quarter Review (in thousands, except for per share and tax rate data) Fiscal Q4 2025 Fiscal Q4 2024 Change Revenue $3,154,644 $2,960,150 $194,494 Adjusted Net Revenue 1 $2,242,246 $2,118,930 $123,316 GAAP Net Earnings from Continuing Operations $138,036 $309,299 ($171,263) GAAP Earnings Per Diluted Share (EPS) from Continuing Operations $1.05 $2.38 $(1.33) Adjusted Net Earnings from Continuing Operations 1 $209,437 $170,480 $38,957 Adjusted EPS from Continuing Operations 1 $1.75 $1.37 $0.38 U.S. GAAP effective tax rate from Continuing Operations 28.6% 18.9% 970 bps Adjusted effective tax rate from Continuing Operations 1 22.7% 27.5% (480) bps 1 See "Non-GAAP Financial Measures and Operating Metrics" and the GAAP Reconciliation tables that follow for additional detail. Fiscal 2025 Review (in thousands, except for per share and tax rate data) Fiscal 2025 Fiscal 2024 Change Revenue $12,029,783 $11,500,941 $528,842 Adjusted Net Revenue 1 $8,694,965 $8,259,301 $435,664 GAAP Net Earnings from Continuing Operations $313,302 $612,804 ($299,502) GAAP Earnings Per Diluted Share (EPS) from Continuing Operations $2.58 $4.79 $(2.21) Adjusted Net Earnings from Continuing Operations 1 $745,615 $665,076 $80,539 Adjusted EPS from Continuing Operations 1 $6.12 $5.28 $0.84 U.S. GAAP effective tax rate from Continuing Operations 39.7% 16.9% 2,280 bps Adjusted effective tax rate from Continuing Operations 1 25.1% 19.6% 550 bps 1 See "Non-GAAP Financial Measures and Operating Metrics" and the GAAP Reconciliation tables that follow for additional detail. Jacobs is hosting a conference call at 10:00 A.M. ET on Thursday November 20, 2025, which will be webcast live at www.jacobs.com . 3 Forward-Looking Statements Certain statements contained in this press release constitute forward-looking statements within the meaning of the United States Private Securities Litigation Reform Act of 1995. Forward-looking statements are statements that do not directly relate to any historical or current fact. When used herein, words such as “expects,” “anticipates,” “believes,” “seeks,” “estimates,” “plans,” “intends,” “future,” “will,” “would,” “could,” “can,” “may,” "target," "goal" and similar words are intended to identify forward-looking statements. Examples of forward-looking statements include, but are not limited to, statements we make concerning our expectations as to our future growth, prospects, financial outlook and business strategy, including our expectations for our fiscal year 2026 adjusted EBITDA margin, adjusted EPS, adjusted net revenue growth, reported free cash flow conversion and free cash flow margin, as well as our expectations for our effective tax rates. Although such statements are based on management's current estimates and expectations, and/or currently available competitive, financial, and economic data, forward-looking statements are inherently uncertain, and you should not place undue reliance on such statements as actual results may differ materially. We caution the reader that there are a variety of risks, uncertainties and other factors that could cause actual results to differ materially from what is contained, projected or implied by our forward-looking statements. Such factors include: ▪ general economic conditions, including inflation and the actions taken by monetary authorities in response to inflation, changes in interest rates and foreign currency exchange rates, changes in capital markets and stock market volatility, instability in the banking industry, labor shortages, or the impact of a possible recession or economic downturn or changes to monetary or fiscal policies or priorities in the U.S. and the other countries where we do business on our results, prospects and opportunities; ▪ competition from existing and future competitors in our target markets, as well as the possible reduction in demand for certain of our product solutions and services, including delays in the timing of the award of projects or reduction in funding, or the abandonment of ongoing or anticipated projects due to the financial condition of our clients and suppliers or due to governmental budget constraints or changes to governmental budgetary priorities, or the inability of our clients to meet their payment obligations in a timely manner or at all; ▪ our ability to fully execute on our corporate strategy, including the impact of acquisitions, strategic alliances, divestitures, and other strategic events resulting from evolving business strategies, including on our ability to maintain our culture and retain key personnel, customers or suppliers, or our ability to achieve the cost-savings and synergies contemplated by our recent acquisitions within the expected time frames or to achieve them fully and to successfully integrate acquired businesses while retaining key personnel, and our ability to invest in the tools needed to implement our strategy; ▪ financial market risks that may affect us, including by affecting our access to capital, the cost of such capital and/or our funding obligations under defined benefit pension and postretirement plans; ▪ legislative changes, including potential changes to the amounts provided for under the Infrastructure Investment and Jobs Act, as well as other legislation and executive orders related to governmental spending, including any directive to federal agencies to reduce federal spending or the size of the federal workforce, including the tax legislation enacted in the U.S. in July 2025, and changes in U.S. or foreign tax laws, statutes, rules, regulations or ordinances, including the impact of, and changes to tariffs and retaliatory tariffs or trade policies, that may adversely impact our future financial positions or results of operations; ▪ increased geopolitical uncertainty and risks, including policy risks and potential civil unrest, relating to the outcome of elections across our key markets and elevated geopolitical tension and conflicts, including the Russia-Ukraine and Israel-Hamas conflicts and the escalating tensions in the Middle East, among others; and ▪ the impact of any pandemic, and any resulting economic downturn on our results, prospects and opportunities, measures or restrictions imposed by governments and health officials in response to the pandemic, as well as the inability of governments in certain of the countries in which we operate to effectively mitigate the financial or other impacts of any future pandemics or infectious disease outbreaks on their economies and workforces and our operations therein. The foregoing factors and potential future developments are inherently uncertain, unpredictable and, in many cases, beyond our control. For a description of these and additional factors that may occur that could cause actual results to differ from our forward-looking statements see the Company’s filings with the U.S. Securities and Exchange Commission, including in particular the discussions contained in our fiscal 2025 Annual Report on Form 10-K under Item 1 - Business, Item 1A - Risk Factors, Item 3 - Legal Proceedings, and Item 7 - Management's Discussion and Analysis of Financial Condition and Results of Operations. The Company is not under any duty to update any of the forward-looking statements after the date of this press release to conform to actual results, except as required by applicable law. [ MORE ] 4 Regulation FD We use any of the following to comply with our disclosure obligations under Regulation FD: press releases, SEC filings, public conference calls, or our website. We routinely post important information on our website at www.jacobs.com, including information that may be deemed to be material. We encourage investors and others interested in the Company to monitor these distribution channels for material disclosures. About Jacobs At Jacobs, we’re challenging today to reinvent tomorrow – delivering outcomes and solutions for the world's most complex challenges. With approximately $12 billion in annual revenue and a talent force of almost 43,000, we provide end-to-end services in advanced manufacturing, cities & places, energy, environmental, life sciences, transportation and water. From advisory and consulting, feasibility, planning, design, program and lifecycle management, we're creating a more connected and sustainable world. See how at jacobs.com and connect with us on LinkedIn , Instagram, X and Facebook. 5 Financial Highlights: Results of Operations (in thousands, except per-share data): For the Three Months Ended For the Years Ended Quarterly data unaudited September 26, 2025 September 27, 2024 September 26, 2025 September 27, 2024 Revenues $ 3,154,644 $ 2,960,150 $ 12,029,783 $ 11,500,941 Direct cost of contracts (2,387,732) (2,225,029) (9,044,849) (8,668,185) Gross profit 766,912 735,121 2,984,934 2,832,756 Selling, general and administrative expenses (555,358) (538,916) (2,121,300) (2,140,320) Operating Profit 211,554 196,205 863,634 692,436 Other Income (Expense): Interest income 8,326 8,514 35,804 34,454 Interest expense (35,337) (35,686) (145,788) (169,058) Loss on extinguishment of debt — — (20,510) — Miscellaneous income (expense), net 4,861 224,573 (189,663) 219,454 Total other (expense) income, net (22,150) 197,401 (320,157) 84,850 Earnings from Continuing Operations Before Taxes 189,404 393,606 543,477 777,286 Income Tax Expense for Continuing Operations (54,078) (74,467) (215,555) (131,493) Net Earnings of the Group from Continuing Operations 135,326 319,139 327,922 645,793 Net (Loss) Earnings of the Group from Discontinued Operations, net of tax (15,786) 19,618 (23,966) 206,850 Net Earnings of the Group 119,540 338,757 303,956 852,643 Net Earnings Attributable to Noncontrolling Interests from Continuing Operations (4,652) (4,953) (3,443) (17,990) Net Loss (Earnings) Attributable to Redeemable Noncontrolling Interests 7,362 (4,887) (11,177) (14,999) Net Earnings Attributable to Jacobs from Continuing Operations 138,036 309,299 313,302 612,804 Net Earnings Attributable to Noncontrolling Interests from Discontinued Operations — (3,480) — (13,561) Net (Loss) Earnings Attributable to Jacobs from Discontinued Operations (15,786) 16,138 (23,966) 193,289 Net Earnings Attributable to Jacobs $ 122,250 $ 325,437 $ 289,336 $ 806,093 Net Earnings Per Share: Basic Net Earnings from Continuing Operations Per Share $ 1.06 $ 2.39 $ 2.59 $ 4.81 Basic Net (Loss) Earnings from Discontinued Operations Per Share $ (0.13) $ 0.13 $ (0.20) $ 1.54 Basic Earnings Per Share $ 0.93 $ 2.52 $ 2.39 $ 6.35 Diluted Net Earnings from Continuing Operations Per Share $ 1.05 $ 2.38 $ 2.58 $ 4.79 Diluted Net (Loss) Earnings from Discontinued Operations Per Share $ (0.13) $ 0.13 $ (0.20) $ 1.54 Diluted Earnings Per Share $ 0.92 $ 2.51 $ 2.38 $ 6.32 6 Segment Information (in thousands): For the Three Months Ended For the Year Ended Quarterly data unaudited September 26, 2025 September 26, 2025 Infrastructure & Advanced Facilities PA Consulting Total Infrastructure & Advanced Facilities PA Consulting Total Revenues from External Customers (1) $ 2,836,183 $ 318,461 $ 3,154,644 $ 10,764,206 $ 1,265,577 $ 12,029,783 Pass Through Revenue (912,398) — (912,398) (3,334,818) — (3,334,818) Adjusted Net Revenue $ 1,923,785 $ 318,461 $ 2,242,246 $ 7,429,388 $ 1,265,577 $ 8,694,965 Direct cost of contracts (2,176,638) (211,094) (2,387,732) (8,228,935) (815,914) (9,044,849) Selling, general and administrative expenses (405,513) (35,370) (440,883) (1,631,723) (171,164) (1,802,887) Segment Operating Profit (1) $ 254,032 $ 71,997 $ 326,029 $ 903,548 $ 278,499 $ 1,182,047 Restructuring, Transaction and Other Charges (2) (74,904) (162,896) Amortization of Intangible Assets (39,571) (155,517) Total U.S. GAAP Operating Profit $ 211,554 $ 863,634 Total Other (Expense) Income, net (3) (22,150) (320,157) Earnings from Continuing Operations Before Taxes $ 189,404 $ 543,477 (1) I&AF revenue and operating profit for the year ended September 26, 2025 were impacted by a reserve in connection with an unfavorable interim ruling against a consolidated joint venture in which the Company holds a 50% interest (the "Consolidated JV Matter"), with the noncontrolling partner’s share included in noncontrolling interests in the Consolidated Statements of Earnings for the respective period. (2) The three months ended September 26, 2025 included $11.7 million in restructuring and other charges related to the Separation Transaction (primarily professional services and employee separation costs), as well as $54.8 million in charges for certain subsidiary level compensation based agreements. The three months ended September 26, 2025 included approximately $5.1 million in charges associated with the Company's TSA with Amentum. The year ended September 26, 2025 included $58.8 million in restructuring and other charges related to the Separation Transaction (primarily professional services and employee separation costs), as well as $75.3 million in charges for certain subsidiary level compensation based agreements. The year ended September 26, 2025 included approximately $26.0 million in charges associated with the Company's TSA with Amentum. (3) The three months ended September 26, 2025 included income associated with the Company's TSA with Amentum. The year ended September 26, 2025 included $227.3 million in mark-to-market losses and other related charges associated with our investment in Amentum stock in connection with the Separation Transaction, as well as $40.5 million in income associated with the Company's TSA with Amentum. The year ended September 26, 2025 included $20.5 million in discounts and expenses associated with the Equity-for-Debt Transaction. 7 For the Three Months Ended For the Year Ended September 27, 2024 September 27, 2024 Infrastructure & Advanced Facilities PA Consulting Total Infrastructure & Advanced Facilities PA Consulting Total Revenues from External Customers $ 2,670,703 $ 289,447 $ 2,960,150 $ 10,323,255 $ 1,177,686 $ 11,500,941 Pass Through Revenue (841,220) — (841,220) (3,241,640) — (3,241,640) Adjusted Net Revenue $ 1,829,483 $ 289,447 $ 2,118,930 $ 7,081,615 $ 1,177,686 $ 8,259,301 Direct cost of contracts (2,040,739) (184,290) (2,225,029) (7,915,256) (752,929) (8,668,185) Selling, general and administrative expenses (411,249) (43,420) (454,669) (1,609,624) (185,507) (1,795,131) Segment Operating Profit $ 218,715 $ 61,737 $ 280,452 $ 798,375 $ 239,250 $ 1,037,625 Restructuring, Transaction and Other Charges (1) (45,299) (192,522) Amortization of Intangible Assets (38,948) (152,667) Total U.S. GAAP Operating Profit $ 196,205 $ 692,436 Total Other Income (Expense), net (2) 197,401 84,850 Earnings from Continuing Operations Before Taxes $ 393,606 $ 777,286 (1) The three months ended September 27, 2024 included $43.2 million in restructuring and other charges relating to the Separation Transaction (primarily professional services and employee separation costs), as well as certain subsidiary level compensation based agreements. The year ended September 27, 2024 included $163.4 million in restructuring and other charges related to the Separation Transaction (primarily professional services and employee separation costs) and $6.4 million in restructuring and other charges related to the Company's investment in PA Consulting (primarily employee separation costs), as well as certain subsidiary level compensation based agreements. (2) The three months and year ended September 27, 2024 included $186.9 million in mark-to-market gains associated with our investment in Amentum stock in connection with the Separation Transaction and a $35.2 million realized gain on interest rate swaps settled during the fourth quarter of fiscal 2024. 8 Balance Sheet (in thousands): September 26, 2025 September 27, 2024 ASSETS Current Assets: Cash and cash equivalents $ 1,235,448 $ 1,144,795 Receivables and contract assets 2,989,067 2,845,452 Prepaid expenses and other 134,804 155,865 Investment in equity securities — 749,468 Total current assets 4,359,319 4,895,580 Property, Equipment and Improvements, net 311,872 315,630 Other Noncurrent Assets: Goodwill 4,780,818 4,788,181 Intangibles, net 717,670 874,894 Deferred income tax assets 325,814 195,406 Operating lease right-of-use assets 289,101 303,856 Miscellaneous 467,941 385,458 Total other noncurrent assets 6,581,344 6,547,795 $ 11,252,535 $ 11,759,005 LIABILITIES AND STOCKHOLDERS’ EQUITY Current Liabilities: Current maturities of long-term debt $ — $ 875,760 Accounts payable 1,261,489 1,029,140 Accrued liabilities 1,037,754 1,087,764 Operating lease liability 111,040 119,988 Contract liabilities 940,616 967,089 Total current liabilities 3,350,899 4,079,741 Long-term debt 2,236,456 1,348,594 Liabilities relating to defined benefit pension and retirement plans 272,069 298,221 Deferred income tax liabilities 151,821 116,655 Long-term operating lease liability 362,361 407,826 Other deferred liabilities 212,330 120,483 Total other noncurrent liabilities 3,235,037 2,291,779 Commitments and Contingencies Redeemable Noncontrolling Interests 1,018,694 820,182 Stockholders’ Equity: Capital stock: Preferred stock, $1 par value, authorized - 1,000,000 shares; issued and outstanding - none — — Common stock $1 par value, authorized - 240,000,000 shares; issued and outstanding - 119,081,294 shares and 124,084,028 shares as of September 26, 2025 and September 27, 2024, respectively 119,081 124,084 Additional paid-in capital 2,706,376 2,758,064 Retained earnings 1,525,760 2,366,769 Accumulated other comprehensive loss (710,410) (699,450) Total Jacobs stockholders’ equity 3,640,807 4,549,467 Noncontrolling interests 7,098 17,836 Total Group stockholders’ equity 3,647,905 4,567,303 $ 11,252,535 $ 11,759,005 9 Cash Flows (in thousands) (Quarterly data unaudited) For the Three Months Ended For the Years Ended September 26, 2025 September 27, 2024 September 26, 2025 September 27, 2024 Cash Flows from Operating Activities: Net earnings attributable to the Group $ 119,540 $ 338,757 $ 303,956 $ 852,643 Adjustments to reconcile net earnings to net cash flows provided by operations: Depreciation and amortization: Property, equipment and improvements 20,021 25,061 82,059 99,232 Intangible assets 39,571 53,215 155,517 209,507 Loss on extinguishment of debt — — 20,510 — (Gain) loss on investment in equity securities — (186,931) 227,305 (186,931) Stock based compensation 13,539 20,023 60,960 74,193 Equity in earnings of operating ventures, net of return on capital distributions (1,023) (2,525) (1,526) (16,079) Loss (gain) on disposals of assets, net 55 (4,233) (722) (3,200) Impairment of equity method investment and other long-term assets — 3,000 — 3,000 Deferred income taxes (40,738) (108,832) (94,532) (224,935) Changes in assets and liabilities, excluding the effects of businesses acquired: Receivables and contract assets, net of contract liabilities 47,403 36,147 (177,877) 59,587 Prepaid expenses and other current assets (7,785) (43,295) 8,383 11,217 Miscellaneous other assets 11,016 35,993 60,586 104,659 Accounts payable 134,931 (35,751) 231,254 81,469 Income taxes payable (17,329) 101,120 (183,273) 94,094 Accrued liabilities (1,956) (37,808) (64,945) (138,491) Other deferred liabilities 65,039 (16,196) 75,231 6,047 Other, net 801 18,787 (16,182) 28,661 Net cash provided by operating activities 383,085 196,532 686,704 1,054,673 Cash Flows from Investing Activities: Additions to property and equipment (29,577) (38,342) (79,232) (121,114) Disposals of property and equipment and other assets — 6,029 2,332 6,187 Capital contributions to equity investees, net of return of capital distributions 677 77 1,609 1,737 Acquisitions of businesses, net of cash acquired — — — (14,000) Net cash used for investing activities (28,900) (32,236) (75,291) (127,190) Cash Flows from Financing Activities: Proceeds from long-term borrowings 285,000 2,382,120 2,458,201 4,606,697 Repayments of long-term borrowings (545,000) (1,175,932) (1,471,800) (3,370,355) Proceeds from short-term borrowings — 4,239 — 5,345 Repayments of short-term borrowings — (834,879) (656,981) (866,761) Debt issuance costs — (32,725) (92) (34,331) Proceeds from issuances of common stock 9,245 12,089 34,712 47,503 Common stock repurchases (100,883) (56,286) (754,130) (402,668) Taxes paid on vested restricted stock (458) (8,331) (27,450) (41,720) Cash dividends to shareholders (38,214) (36,340) (153,027) (142,779) Net dividends associated with noncontrolling interests (6,765) (4,162) (14,205) (21,678) Repurchase of redeemable noncontrolling interests (1,977) (13,556) (10,449) (55,344) Proceeds from issuances of redeemable noncontrolling interests — — — 19,761 Cash impact from distribution of SpinCo Business — (495,307) 70,000 (495,307) Net cash used for financing activities (399,052) (259,070) (525,221) (751,637) Effect of Exchange Rate Changes (14,297) 29,425 3,693 41,640 Net (Decrease) Increase in Cash and Cash Equivalents and Restricted Cash (59,164) (65,349) 89,885 217,486 Cash and Cash Equivalents, including Restricted Cash, at the Beginning of the Period 1,295,980 1,212,280 1,146,931 929,445 Cash and Cash Equivalents, including Restricted Cash, at the End of the Period $ 1,236,816 $ 1,146,931 $ 1,236,816 $ 1,146,931 10 Backlog (in millions): Unaudited September 26, 2025 September 27, 2024 Infrastructure & Advanced Facilities $ 22,649 $ 21,472 PA Consulting 415 378 Total $ 23,064 $ 21,850 11 Non-GAAP Financial Measures and Operating Metrics: In this press release, the Company has included certain non-GAAP financial measures as defined in Regulation G promulgated under the Securities Exchange Act of 1934, as amended. These non-GAAP measures are described below. As a result of the spin-off of the SpinCo Business and merger of the SpinCo Business with Amentum Parent Holdings LLC to form an independent, publicly traded company, Amentum Holdings, Inc. (NYSE: AMTM) (the "Separation Transaction"), substantially all CMS and C&I (the "SpinCo Business") related assets and liabilities were separated on September 27, 2024. As such, the financial results of the SpinCo Business are reflected as discontinued operations for all periods presented and therefore excluded from the non-GAAP measures described below. Adjusted net revenue is calculated by adjusting revenue from continuing operations to exclude amounts we bill to clients on projects where we are procuring subcontract labor or third-party materials and equipment on behalf of the client (referred to as “pass throughs”). These amounts are considered pass throughs because we receive no or only a minimal mark-up associated with the billed amounts. In 2023, we amended our name and convention for revenue, excluding pass-through costs from “net revenue” to “adjusted net revenue.” This name change is intended to make the non-GAAP nature of this measure more prominent and does not impact measurement. We sometimes refer to our GAAP revenue as "gross revenue". Jacobs adjusted operating profit, adjusted earnings from continuing operations before taxes, adjusted income tax expenses from continuing operations, adjusted net earnings from continuing operations, adjusted EPS from continuing operations and adjusted interest expense are calculated by: 1. Excluding items collectively referred to as Restructuring, Transaction and Other Charges, which include: a. costs and other charges associated with our Focus 2023 Transformation initiatives, including activities associated with the re-scaling and repurposing of physical office space, employee separations, contractual termination fees and related expenses, referred to as "Focus 2023 Transformation, mainly real estate rescaling efforts"; b. transaction costs and other charges incurred in connection with mergers, acquisitions, strategic investments and divestitures, including advisor fees, change in control payments, and the impact of the quarterly adjustment to the estimated performance based payout of contingent consideration to certain sellers in connection with certain acquisitions and similar transaction costs and expenses (collectively referred to as "Transaction Costs"); c. recoveries, costs and other charges associated with (i) restructuring activities, (ii) cost reduction initiatives implemented in connection with mergers, acquisitions, strategic investments and divestitures, including the separation of the CMS/C&I business, such as advisor fees, involuntary terminations and related costs, costs associated with co-locating offices of acquired companies, separating physical locations of continuing operations, professional services and other personnel costs, (iii) involuntary termination programs and other related separations impacting management and employees, including related transition costs, and (iv) certain legal costs and expenses to the extent related to (i) - (iii) or determined to not be related to continuing operations (clauses (i) – (iv) collectively referred to as “Restructuring, integration, separation and other charges"). 2. Excluding items collectively referred to as "Other adjustments", which include: a. intangible assets amortization and impairment charges; b. impact of certain subsidiary level contingent equity-based agreements in connection with the transaction structure of our PA Consulting investment; c. impacts related to tax rate increases in the UK in a prior period; d. revenue under the Company's transition services agreement (TSA) included in other income for U.S. GAAP reporting purposes, and any SG&A costs associated with the provision of such services; e. pretax mark-to-market and other related gains or losses associated with the Company's investment in Amentum stock recorded in connection with the Separation Transaction; f. discounts and expenses related to the one-time exchange of the Company's investment in Amentum shares for a portion of the Company's outstanding term loans, which term loans were canceled; and g. impacts resulting from the EPS numerator adjustment relating to the redeemable noncontrolling interests preference share repurchase and reissuance activities. 12 We eliminate the impact of “Restructuring, integration, separation and other charges” because we do not consider these to be indicative of ongoing operating performance. Actions taken by the Company to enhance efficiencies are subject to significant fluctuations from period to period. The Company's management believes the exclusion of the amounts relating to the above-listed items improves the period-to-period comparability and analysis of the underlying financial performance of the business. Adjustments to derive adjusted net earnings from continuing operations and adjusted EPS from continuing operations are calculated on an after-tax basis. Free cash flow (FCF) is calculated as net cash provided by operating activities from continuing operations as reported on the statement of cash flows less additions to property and equipment. FCF Margin is calculated as FCF divided by adjusted net revenue. Adjusted EBITDA is calculated by adding income tax expense, depreciation expense and adjusted interest expense to, and deducting interest income from, adjusted net earnings attributable to Jacobs from continuing operations. I&AF Operating Margin is a ratio of I&AF operating profit for the segment to the segment's adjusted net revenue. Jacobs Adjusted Operating Margin is a ratio of adjusted operating profit for the Company to the Company's adjusted net revenue. For a reconciliation of revenue to adjusted net revenue, see "Segment Information". We believe that the measures listed above are useful to management, investors and other users of our financial information in evaluating the Company’s operating results and understanding the Company’s operating trends by excluding or adding back the effects of the items described above and below, the inclusion or exclusion of which can obscure underlying trends. Additionally, management uses such measures in its own evaluation of the Company’s performance, particularly when comparing performance to past periods, and believes these measures are useful for investors because they facilitate a comparison of our financial results from period to period. This press release also contains certain financial and operating metrics which management believes are useful in evaluating the Company's performance. Backlog r epresents revenue or gross profit, as applicable, we expect to realize for work to be completed by our consolidated subsidiaries and our proportionate share of work to be performed by unconsolidated joint ventures . Gross margin in backlog refers to the ratio of gross profit in backlog to gross revenue in backlog. For more information on how we determine our backlog, see our Backlog Information in our most recent annual report filed with the Securities and Exchange Commission. Adjusted EBITDA margin refers to a ratio of adjusted EBITDA to adjusted net revenue. Cash conversion refers to a ratio of cash flow from operations to GAAP net earnings from continuing operations. Reported FCF conversion refers to a ratio of FCF to GAAP net earnings from continuing operations. Book-to-bill ratio is an operational measure representing the ratio of change in backlog since the prior reporting period plus reported revenue for the reporting period to the reported revenues for the same period. We regularly monitor these operating metrics to evaluate our business, identify trends affecting our business, and make strategic decisions. The Company provides non-GAAP measures to supplement U.S. GAAP measures, as they provide additional insight into the Company’s financial results. However, non-GAAP measures have limitations as analytical tools and should not be considered in isolation and are not in accordance with, or a substitute for, U.S. GAAP measures. In addition, other companies may define non-GAAP measures differently, which limits the ability of investors to compare non-GAAP measures of the Company to those used by our peer companies. The following tables reconcile the components and values of U.S. GAAP earnings from continuing operations before taxes, income taxes from continuing operations, net earnings attributable to Jacobs from continuing operations, Diluted Net Earnings from Continuing Operations Per Share (which we refer to as EPS from continuing operations), to the corresponding "adjusted" amount, net cash provided by operating activities to reported free cash flow, and revenue to adjusted net revenue. For the comparable period presented below, such adjustments consist of amounts incurred in connection with the items described above. Amounts are shown in thousands, except for per-share data (note: earnings per share amounts may not total due to rounding). 13 Reconciliation of Earnings from Continuing Operations Before Taxes to Adjusted Earnings from Continuing Operations Attributable to Jacobs Before Taxes (in thousands): Three Months Ended For the Years Ended September 26, 2025 September 27, 2024 September 26, 2025 September 27, 2024 Earnings from Continuing Operations Before Taxes $ 189,404 $ 393,606 $ 543,477 $ 777,286 Restructuring, Transaction and Other Charges (1): Focus 2023 Transformation, mainly real estate rescaling efforts — (10) — 49 Transaction costs 1,347 1,232 64 9,246 Restructuring, integration, separation and other charges 13,659 7,234 61,316 134,862 Other Adjustments (2): Transition Services Agreement, net (3,907) — (14,475) — Amortization of intangibles 39,571 38,948 155,517 152,666 Mark-to-market and other related (gains) losses on investment in Amentum stock — (186,931) 227,305 (186,931) Other 54,822 1,910 97,060 13,433 Adjusted Earnings from Continuing Operations Before Taxes $ 294,896 $ 255,989 $ 1,070,264 $ 900,611 Adjusted Earnings Attributable to Noncontrolling Interests from Continuing Operations (18,421) (15,053) (55,764) (58,713) Adj. Earnings from Continuing Operations attributable to Jacobs before Taxes $ 276,475 $ 240,936 $ 1,014,500 $ 841,898 (1) Includes pre-tax charges primarily relating to the Separation Transaction for the three months and years ended September 26, 2025 and September 27, 2024, as well as charges associated with various transaction costs and activity associated with Company's restructuring and integration programs. Includes real estate impairment charges associated with the Company's Focus 2023 Transformation program for the three months and year ended September 27, 2024. (2) Includes pre-tax charges relating to amortization of intangible assets and the impact of certain subsidiary level compensation based agreements for the three months and years ended September 26, 2025 and September 27, 2024. The year ended September 26, 2025, as well as three months and year ended September 27, 2024 also include pretax mark-to-market gains and losses associated with our investment in Amentum stock in connection with the Separation Transaction and income under the Company's TSA with Amentum in connection with the Separation Transaction for the three months and year ended September 26, 2025. The year ended September 26, 2025 includes discounts and expenses associated with the Company's non-cash equity for debt exchange transacted on March 13, 2025. 14 Reconciliation of Income Tax Expense from Continuing Operations to Adjusted Income Tax Expense from Continuing Operations (in thousands): Three Months Ended For the Years Ended September 26, 2025 September 27, 2024 September 26, 2025 September 27, 2024 Income Tax Expense for Continuing Operations $ (54,078) $ (74,467) $ (215,555) $ (131,493) Tax Effects of Restructuring, Transaction and Other Charges (1) Focus 2023 Transformation, mainly real estate rescaling efforts — 2 — (12) Transaction costs (342) (174) 83 (1,428) Restructuring, integration, separation and other charges (3,480) 14,565 (16,949) (4,779) Tax Effects of Other Adjustments (2) Transition Services Agreement, net 996 — 3,691 — Amortization of intangibles (10,119) (10,362) (39,776) (39,073) Other (15) (20) (379) (36) Adjusted Income Tax Expense from Continuing Operations $ (67,038) $ (70,456) $ (268,885) $ (176,821) Adjusted effective tax rate from Continuing Operations 22.7% 27.5% 25.1% 19.6% (1) Includes income tax impacts on restructuring activities primarily relating to the Separation Transaction as well as charges associated with various transaction costs and activity associated with Company's restructuring and integration programs for the three months and years ended September 26, 2025 and September 27, 2024. Includes income tax impacts on real estate impairments associated with the Company's Focus 2023 Transformation program for the three months and year ended September 27, 2024. (2) Includes income tax impacts on amortization of intangible assets as well as certain subsidiary level compensation based agreements for the three months and years ended September 26, 2025 and September 27, 2024. The three months and year ended September 26, 2025 includes income tax impacts on income under the Company's TSA with Amentum in connection with the Separation Transaction. The year ended September 26, 2025 includes income tax impacts on discounts and expenses associated with the Company's non-cash equity for debt exchange transacted on March 13, 2025. 15 Reconciliation of Net Earnings Attributable to Jacobs from Continuing Operations to Adjusted Net Earnings Attributable to Jacobs from Continuing Operations (in thousands): Three Months Ended For the Years Ended September 26, 2025 September 27, 2024 September 26, 2025 September 27, 2024 Net Earnings Attributable to Jacobs from Continuing Operations $ 138,036 $ 309,299 $ 313,302 $ 612,804 After-tax effects of Restructuring, Transaction and Other Charges (1): Focus 2023 Transformation, mainly real estate rescaling efforts — (8) — 36 Transaction costs 984 845 21 6,606 Restructuring, integration, separation and other charges 9,823 22,077 43,935 128,155 After-tax effects of Other Adjustments (2): Transition Services Agreement, net (2,911) — (10,784) — Amortization of intangibles 24,696 23,859 97,203 95,020 Mark-to-market and other related (gains) losses on investment in Amentum stock — (186,931) 227,305 (186,931) Other 38,809 1,339 74,633 9,386 Adjusted Net Earnings Attributable to Jacobs from Continuing Operations $ 209,437 $ 170,480 $ 745,615 $ 665,076 (1) Includes after-tax charges primarily relating to the Separation Transaction and activity associated with Company's restructuring and integration programs for the three months and years ended September 26, 2025 and September 27, 2024. Includes non-cash real estate impairment charges associated with the Company's Focus 2023 Transformation program and charges associated with various transaction costs for the three months and year ended September 27, 2024. (2) Includes after-tax and noncontrolling interest charges from the amortization of intangible assets and certain subsidiary level compensation based agreements for the three months and years ended September 26, 2025 and September 27, 2024. The year ended September 26, 2025, as well as three months and year ended September 27, 2024 also include pretax mark-to-market gains and losses associated with our investment in Amentum stock in connection with the Separation Transaction and after-tax income under the Company's TSA with Amentum in connection with the Separation Transaction for the three months and year ended September 26, 2025. The year ended September 26, 2025 includes after-tax discounts and expenses associated with the Company's non-cash equity for debt exchange transacted on March 13, 2025. 16 Reconciliation of Diluted Net Earnings from Continuing Operations Per Share to Adjusted Diluted Net Earnings from Continuing Operations Per Share (in thousands): Three Months Ended For the Years Ended September 26, 2025 September 27, 2024 September 26, 2025 September 27, 2024 Diluted Net Earnings from Continuing Operations Per Share $ 1.05 $ 2.38 $ 2.58 $ 4.79 After-tax effects of Restructuring, Transaction and Other Charges (1): Transaction costs 0.01 0.01 — 0.05 Restructuring, integration, separation and other charges 0.08 0.18 0.36 1.02 After-tax effects of Other Adjustments (2): Transition Services Agreement, net (0.02) — (0.09) — Amortization of intangibles 0.21 0.19 0.80 0.75 Mark-to-market and other related (gains) losses on investment in Amentum stock — (1.50) 1.86 (1.48) Other 0.42 0.11 0.60 0.16 Adjusted Diluted Net Earnings from Continuing Operations Per Share $ 1.75 $ 1.37 $ 6.12 $ 5.28 (1) Includes per-share impact charges primarily relating to the Separation Transaction and activity associated with the Company's restructuring and integration programs for the three months and years ended September 26, 2025 and September 27, 2024. Includes charges associated with various transaction costs for the three months and year ended September 26, 2025 and year ended September 27, 2024. (2) Includes per-share impacts from the amortization of intangible assets and certain subsidiary level compensation based agreements for the three months and years ended September 26, 2025 and September 27, 2024, along with discounts and expenses associated with the Company's non-cash debt for equity exchange transacted on March 13, 2025 for the year ended September 26, 2025. The year ended September 26, 2025, as well as three months and year ended September 27, 2024 also include per-share impacts from mark-to-market gains and losses associated with our investment in Amentum stock in connection with the Separation Transaction and income under the Company's TSA with Amentum in connection with the Separation Transaction for the three months and year ended September 26, 2025. 17 Reconciliation of Earnings Attributable to Noncontrolling Interests from Continuing Operations to Adjusted Earnings Attributable to Noncontrolling Interests from Continuing Operations (in thousands) Three Months Ended Twelve Months Ended September 26, 2025 September 27, 2024 September 26, 2025 September 27, 2024 Loss (Earnings) Attributable to Noncontrolling Interests from Continuing Operations $ 2,710 $ (9,840) $ (14,620) $ (32,989) Restructuring, Transaction and Other Charges (1) Transaction costs (21) (213) (126) (1,212) Restructuring, integration and separation charges (357) 278 (432) (1,928) Other Adjustments (2) Amortization of intangibles (4,756) (4,727) (18,538) (18,573) Other (15,997) (551) (22,048) (4,011) Adjusted Earnings Attributable to Noncontrolling Interests from Continuing Operations $ (18,421) $ (15,053) $ (55,764) $ (58,713) (1) Includes noncontrolling interests amounts related to various transaction costs as well as activity associated with Company's restructuring and integration programs. (2) Includes noncontrolling interests impacts from the amortization of intangible assets and certain subsidiary level compensation based agreements. 18 Reconciliation of Interest Expense from Continuing Operations to Adjusted Interest Expense from Continuing Operations (in thousands): Three Months Ended For the Years Ended September 26, 2025 September 27, 2024 September 26, 2025 September 27, 2024 Interest Expense from Continuing Operations $ (35,337) $ (35,686) $ (145,788) $ (169,058) Restructuring, Transaction and Other Charges (1) Restructuring, integration and separation charges — 219 — 219 Adjusted Interest Expense from Continuing Operations $ (35,337) $ (35,467) $ (145,788) $ (168,839) (1) Includes pre-tax charges related to the Separation Transaction for the three months and year ended September 27, 2024. 19 Reconciliation of Net Earnings Attributable to Jacobs from Continuing Operations to Adjusted EBITDA (in thousands): Three Months Ended For the Years Ended September 26, 2025 September 27, 2024 September 26, 2025 September 27, 2024 Net Earnings Attributable to Jacobs from Continuing Operations $ 138,036 $ 309,299 $ 313,302 $ 612,804 After-tax effects of Restructuring, Transaction and Other Charges 10,807 22,914 43,956 134,797 After-tax effects of Other Adjustments 60,594 (161,733) 388,357 (82,525) Adj. Net Earnings Attributable to Jacobs from Continuing Operations 209,437 170,480 745,615 665,076 Adj. Income Tax Expense from Continuing Operations 67,038 70,456 268,885 176,821 Adj. Earnings from Continuing Operations attributable to Jacobs before Taxes 276,475 240,936 1,014,500 841,897 Depreciation expense 20,021 21,053 82,059 82,987 Interest income (8,326) (8,514) (35,804) (34,454) Adjusted Interest expense 35,337 35,467 145,788 168,839 Adjusted EBITDA $ 323,507 $ 288,942 $ 1,206,543 $ 1,059,269 Adjusted EBITDA Margin 14.4% 13.6% 13.9% 12.8% Depreciation expense (20,021) (21,053) (82,059) (82,987) Adjusted Earnings Attributable to Noncontrolling Interests from Continuing Operations 18,421 15,053 55,764 58,713 Adjusted Miscellaneous Income (Expense) from Continuing Operations 4,122 (2,490) 1,799 2,629 Adjusted Operating Profit $ 326,029 $ 280,452 $ 1,182,047 $ 1,037,624 Certain amounts may not agree to other non-GAAP schedules due to rounding. 20 Reconciliation of Free Cash Flow (in thousands): Three Months Ended For the Years Ended September 26, 2025 September 27, 2024 September 26, 2025 September 27, 2024 Net cash provided by operating activities $ 383,085 $ 196,532 $ 686,704 $ 1,054,673 Additions to property and equipment (29,577) (38,342) (79,232) (121,114) Free cash flow $ 353,508 $ 158,190 $ 607,472 $ 933,559 Net cash used for investing activities $ (28,900) $ (32,236) $ (75,291) $ (127,190) Net cash used for financing activities $ (399,052) $ (259,070) $ (525,221) $ (751,637) 21 Earnings Per Share (in thousands): For the Three Months Ended For the Years Ended September 26, 2025 September 27, 2024 September 26, 2025 September 27, 2024 Numerator for Basic and Diluted EPS: Net earnings attributable to Jacobs from continuing operations $ 138,036 $ 309,299 $ 313,302 $ 612,804 Preferred Redeemable Noncontrolling interests redemption value adjustment (11,505) (12,020) 912 (10,274) Net earnings from continuing operations allocated to common stock for EPS calculation $ 126,531 $ 297,279 $ 314,214 $ 602,530 Net (loss) earnings from discontinued operations allocated to common stock for EPS calculation $ (15,786) $ 16,138 $ (23,966) $ 193,289 Net earnings allocated to common stock for EPS calculation $ 110,745 $ 313,417 $ 290,248 $ 795,819 Denominator for Basic and Diluted EPS: Shares used for calculating basic EPS attributable to common stock 119,476 124,315 121,468 125,324 Effect of dilutive securities: Stock compensation plans 507 569 464 557 Shares used for calculating diluted EPS attributable to common stock 119,983 124,884 121,932 125,881 Net Earnings Per Share: Basic Net Earnings from Continuing Operations Per Share $ 1.06 $ 2.39 $ 2.59 $ 4.81 Basic Net (Loss) Earnings from Discontinued Operations Per Share $ (0.13) $ 0.13 $ (0.20) $ 1.54 Basic Earnings Per Share: $ 0.93 $ 2.52 $ 2.39 $ 6.35 Diluted Net Earnings from Continuing Operations Per Share $ 1.05 $ 2.38 $ 2.58 $ 4.79 Diluted Net (Loss) Earnings from Discontinued Operations Per Share $ (0.13) $ 0.13 $ (0.20) $ 1.54 Diluted Earnings Per Share: $ 0.92 $ 2.51 $ 2.38 $ 6.32 Note: Earnings per share amounts may not add due to rounding 22 For additional information contact: Investors: Bert Subin JacobsIR@jacobs.com Media: Louise White louise.white@jacobs.com 469-724-0810 [END] 23

the item shown at left

other guidance in this release

Text is the filed exhibit, verbatim.