Exhibit 99.1

			1999 Bryan Street, Suite 3500
			Dallas, Texas 75201
			1.214.583.8500

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 Highlights1:

•Gross revenue of $3.2 billion up 6.6% y/y; adjusted net revenue2 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 EBITDA2 of $324 million increased 12.0% y/y

•GAAP EPS of $1.05 decreased (55.9)% y/y; adjusted EPS2 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 Highlights1:

•Gross revenue of $12.0 billion up 4.6% y/y; adjusted net revenue2 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 EBITDA2 of $1.2 billion increased 13.9% y/y

•GAAP EPS of $2.58 decreased (46.1)% y/y; adjusted EPS2 of $6.12 increased 15.9% y/y

•Cash conversion and reported free cash flow conversion2 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 Outlook3

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%.

Fourth Quarter Review (in thousands, except for per share and tax rate data)

1See "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 Revenue1			$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 Operations1			$745,615			$665,076			$80,539
Adjusted EPS from Continuing Operations1			$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 Operations1			25.1%			19.6%			550 bps

1See "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.

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.

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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.

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.

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.

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 represents 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).

(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.

(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.

(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.

(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.

(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.

			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.

Certain amounts may not agree to other non-GAAP schedules due to rounding.

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)

For additional information contact:

Investors:

Bert Subin

JacobsIR@jacobs.com

Media:

Louise White

louise.white@jacobs.com

469-724-0810

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