May 14, 2019

0 Message : Forward-Looking Statement Disclaimer Certain statements contained in this presentation constitute forward-looking statements as such term is defined in Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, and such statements are intended to be covered by the safe harbor provided by the same. Statements made in this presentation that are not based on historical fact are forward-looking statements. Although such statements are based on management's current estimates and expectations, and 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. The potential risks and uncertainties include, among others, the possibility that the acquisition of KeyW by Jacobs will not close or the closing may be delayed, the ability to recognize the benefits of the KeyW disposition, the outcome of legal proceedings, the risk that Jacobs' future performance may not achieve its estimated earnings, changes in market conditions and economic circumstances, availability of investment opportunities, the timing, method and amount of repurchases under the share repurchase authorization, and the market price of the Company's common stock, among others. For a description of these and other risks, uncertainties and other factors that may occur that could cause actual results to differ from our forward-looking statements see our Annual Report on Form 10-K for the year ended September 28, 2018, our Quarterly Reports on Form 10-Q for the quarters ended December 28, 2018 and March 29, 2019, as well as our other filings with the SEC. We are not under any duty to update any of the forward-looking statements after the date of this presentation to conform to actual results, except as required by applicable law. Non-GAAP Financial Measures To supplement the financial results presented in accordance with generally accepted accounting principles in the United States ("GAAP"), we present certain non-GAAP financial measures within the meaning of Regulation G under the Securities Exchange Act of 1934, as amended. These measures are not, and should not be viewed as, substitutes for GAAP financial measures. The non- GAAP financial measures used herein include: net revenue, adjusted net earnings, adjusted EPS, adjusted operating profit, adjusted operating profit margin and adjusted EBITDA. These measures are not, and should not be viewed as, substitutes for GAAP measures. More information about these non-GAAP financial measures and reconciliations of these non-GAAP financial measures to the most directly comparable GAAP financial measures can be found at the end of this presentation. Reconciliation of the adjusted EPS and adjusted pro forma EBITDA outlook for fiscal 2019 to the most directly comparable GAAP measure is not available without unreasonable efforts because the Company cannot predict with sufficient certainty all of 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 2019. Pro Forma Figures During this presentation, we may discuss comparisons of current quarter results to prior periods on a pro forma adjusted basis. The pro forma adjusted figures for the first quarter of fiscal 2018 were calculated by using revenue and income from continuing operations of the combined Jacobs and CH2M entities as if the acquisition of CH2M had occurred prior to the first quarter of fiscal 2018, as adjusted for (i) the exclusion of restructuring and other related charges, (ii) the deconsolidation of CH2M's investment in Chalk River as if deconsolidated on October 1, 2016 and (iii) the exclusion of the revenue and operating results associated with CH2M's MOPAC project. In addition, the prior fiscal periods are presented as if the divestiture of the ECR business had occurred prior to the first quarter of fiscal 2018. In addition, each quarterly period of fiscal 2018 has been recast to reflect the new segment realignment, backlog methodology and pension cost changes and the updated fiscal 2019 corporate cost allocation methodology, in addition to the other adjustments described on the Non-GAAP Financial Measures slides at the end of this presentation. We believe this information helps provide additional insight into the underlying trends of our business when comparing current performance against prior periods. Readers should consider this information together with a comparison to Jacobs' historical financial results as reported in Jacobs' filings with the SEC. ▪