Exhibit 99.1

		Chubb Limited Bärengasse 32 CH-8001 Zurich Switzerland		www.chubb.com @Chubb

News Release

Chubb Reports First Quarter Per Share Net Income and Core

Operating Income of $5.07 and $2.52, Respectively, Including Net

Catastrophe Losses Per Share of $1.26 Versus $0.44 Prior Year;

Consolidated Net Premiums Written Up 8.6%, with Commercial

P&C Lines Globally Up 15.6%

ZURICH – April 27, 2021 – Chubb Limited (NYSE: CB) today reported net income for the quarter ended March 31, 2021 of $2.30 billion, or $5.07 per share, compared with $252 million, or $0.55 per share, for the same quarter last year. Core operating income was $1.14 billion, or $2.52 per share, compared with $1.22 billion, or $2.68 per share, for the same quarter last year. Book and tangible book value per share decreased 0.4% and 0.6%, respectively, from December 31, 2020 and now stand at $131.37 and $87.16, respectively. Book value was unfavorably impacted by total after-tax net realized and unrealized losses of $737 million, including a $1.1 billion loss in the investment portfolio, principally due to rising interest rates, partially offset by a gain of $275 million in the company’s variable annuity reinsurance portfolio.

Chubb Limited News Release

Chubb Limited

First Quarter Summary

(in millions of U.S. dollars, except per share amounts)

(Unaudited)

For the three months ended March 31, 2021 and 2020, the tax expenses (benefits) related to the table above were $(5) million for amortization of fair value adjustment of acquired invested assets and long-term debt for both periods; $133 million and $(17) million, respectively, for adjusted net realized gains and losses; and $210 million and $237 million, respectively, for core operating income.

Evan G. Greenberg, Chairman and Chief Executive Officer of Chubb Limited, commented: “Chubb had another very good quarter with excellent commercial premium revenue growth globally, double-digit renewal rate change in our commercial P&C businesses, and further expansion of our underwriting margins. Core operating income was $2.52 per share and net income per share was $5.07. Though it was an active quarter for natural catastrophes, we published an excellent combined ratio of 91.8%, while excluding catastrophes, current accident year underwriting income was up over 26%, leading to a world-class combined ratio of 85.2%. Margin improvement from both the loss and expense ratios was broad based.

“Our commercial P&C businesses globally continued to capitalize on favorable underwriting conditions. P&C net premiums were up 9.7% globally, with commercial lines up over 15.5%. Foreign exchange contributed 1.6 points to this outstanding result. Rates continued to increase and varied by line, averaging about 14.5% globally. From what we can see, I am confident these market conditions will endure. Frankly, they are a continued and rational response to the loss environment and years of industry underpricing.

“Our consumer lines globally remain impacted by the pandemic’s effects on travel and other business and consumer-related activity, with net premiums down 2.5%. We see early signs of recovery and, in fact, our personal lines division globally reported modest growth in the quarter. We expect growth to improve as the year goes along.

“Our organization is focused, energized and mission-driven. We are leaning into the current favorable underwriting conditions, growing exposure and expanding margins. We have all of the capabilities in place to grow our company profitably while increasing shareholder value.”

Chubb Limited News Release

Operating highlights for the quarter ended March 31, 2021 were as follows:

Chubb Limited News Release

Details of financial results by business segment are available in the Chubb Limited Financial Supplement. Key segment items for the quarter ended March 31, 2021 are presented below:

Chubb Limited News Release

Chubb Limited News Release

All comparisons are with the same period last year unless otherwise specifically stated.

Please refer to the Chubb Limited Financial Supplement, dated March 31, 2021, which is posted on the company’s investor relations website, investors.chubb.com, in the Financials section for more detailed information on individual segment performance, together with additional disclosure on reinsurance recoverable, loss reserves, investment portfolio, and debt and capital.

Chubb Limited will hold its first quarter earnings conference call on Wednesday, April 28, 2021 beginning at 8:30 a.m. Eastern. The earnings conference call will be available via live webcast at investors.chubb.com or by dialing 888-394-8218 (within the United States) or 323-794-2588 (international), passcode 3276681. Please refer to the Chubb website under Events and Presentations for details. A replay of the call will be available until Wednesday, May 12, 2021 and the archived webcast will be available on our website for approximately one month. To listen to the replay, please click here to register and receive dial-in numbers.

About Chubb

Chubb is the world’s largest publicly traded property and casualty insurance company. With operations in 54 countries and territories, Chubb provides commercial and personal property and casualty insurance, personal accident and supplemental health insurance, reinsurance and life insurance to a diverse group of clients. As an underwriting company, we assess, assume and manage risk with insight and discipline. We service and pay our claims fairly and promptly. The company is also defined by its extensive product and service offerings, broad distribution capabilities, exceptional financial strength and local operations globally. Parent company Chubb Limited is listed on the New York Stock Exchange (NYSE: CB) and is a component of the S&P 500 index. Chubb maintains executive offices in Zurich, New York, London, Paris and other locations, and employs approximately 31,000 people worldwide. Additional information can be found at: www.chubb.com.

Investor Contact

Karen Beyer: (212) 827-4445; karen.beyer@chubb.com

Media Contact

Jeffrey Zack: (212) 827-4444; jeffrey.zack@chubb.com

Chubb Limited News Release

Regulation G - Non-GAAP Financial Measures

In presenting our results, we included and discussed certain non-GAAP measures. These non-GAAP measures, which may be defined differently by other companies, are important for an understanding of our overall results of operations and financial condition. However, they should not be viewed as a substitute for measures determined in accordance with generally accepted accounting principles (GAAP).

Throughout this document there are various measures presented on a constant-dollar basis (i.e., excludes the impact of foreign exchange). We believe it is useful to evaluate the trends in our results exclusive of the effect of fluctuations in exchange rates between the U.S. dollar and the currencies in which our international business is transacted, as these exchange rates could fluctuate significantly between periods and distort the analysis of trends. The impact is determined by assuming constant foreign exchange rates between periods by translating prior period results using the same local currency exchange rates as the comparable current period.

Net premiums written adjusted for reinstatement premiums are net premiums written in Q1 2021 adjusted to exclude the year-over-year impact of $23 million of reinstatement premiums in the North America Personal P&C insurance segment. We believe these measures are meaningful to evaluate trends in the underlying business on a comparable basis.

Adjusted net investment income is net investment income excluding the amortization of the fair value adjustment on acquired invested assets from the acquisition of The Chubb Corporation (Chubb Corp) of $26 million in Q1 2021 and including investment income of $41 million in Q1 2021 from partially owned investment companies (private equity partnerships) where our ownership interest is in excess of three percent that are accounted for under the equity method. The mark-to-market movement on these private equity partnerships are included in adjusted net realized gains (losses) as described below. We believe this measure is meaningful as it highlights the underlying performance of our invested assets and portfolio management in support of our lines of business.

Adjusted net realized gains (losses), net of tax, includes net realized gains (losses) and net realized gains (losses) recorded in other income (expense) related to unconsolidated subsidiaries, and excludes realized gains and losses on crop derivatives. These derivatives were purchased to provide economic benefit, in a manner similar to reinsurance protection, in the event that a significant decline in commodity pricing impacts underwriting results. We view gains and losses on these derivatives as part of the results of our underwriting operations, and therefore realized gains (losses) from these derivatives are reclassified to adjusted losses and loss expenses.

P&C underwriting income is calculated by subtracting adjusted losses and loss expenses, policy acquisition costs and administrative expenses from net premiums earned by our P&C operations. We use P&C underwriting income and operating ratios to monitor the results of our operations without the impact of certain factors, including net investment income, other income (expense), interest expense, amortization expense of purchased intangibles, income tax expense and adjusted net realized gains (losses).

Current accident year underwriting income excluding catastrophe losses is underwriting income adjusted to exclude catastrophe losses and prior period development (PPD). We believe it is useful to exclude catastrophe losses, as they are not predictable as to timing and amount, and PPD as these unexpected loss developments on historical reserves are not indicative of our current underwriting performance. We believe the use of these measures enhances the understanding of our results of operations by highlighting the underlying profitability of our insurance business.

Core operating income, net of tax, excludes from net income the after-tax impact of adjusted net realized gains (losses) and the amortization of fair value adjustment of acquired invested assets and long-term debt related to the Chubb Corp acquisition. We believe this presentation enhances the understanding of our results of operations by highlighting the

Chubb Limited News Release

underlying profitability of our insurance business. We exclude adjusted net realized gains (losses) because the amount of these gains (losses) are heavily influenced by, and fluctuate in part according to, the availability of market opportunities. We exclude the amortization of the fair value adjustments related to purchased invested assets and long-term debt due to the size and complexity of this acquisition. References to core operating income measures mean net of tax, whether or not noted.

Core operating return on equity (ROE) and Core operating return on tangible equity (ROTE) are annualized non-GAAP financial measures. The numerator includes core operating income (loss), net of tax. The denominator includes the average shareholders’ equity for the period adjusted to exclude unrealized gains (losses) on investments, net of tax. For the ROTE calculation, the denominator is also adjusted to exclude goodwill and other intangible assets, net of tax. These measures enhances the understanding of the return on shareholders’ equity by highlighting the underlying profitability relative to shareholders’ equity and tangible equity excluding the effect of unrealized gains and losses on our investments.

P&C combined ratio is the sum of the loss and loss expense ratio, acquisition cost ratio and the administrative expense ratio excluding the life business and including the realized gains and losses on the crop derivatives, as noted above.

Current accident year combined ratio excluding catastrophe losses excludes the impact of catastrophe losses and PPD from the combined ratio. We believe this measure provides a better evaluation of our underwriting performance and enhances the understanding of the trends in our property and casualty business that may be obscured by these items.

Global P&C performance metrics comprise consolidated operating results (including corporate) and exclude the operating results of the company’s Life Insurance and North America Agricultural Insurance segments. The agriculture insurance business is a different business in that it is a public sector and private sector partnership in which insurance rates, premium growth, and risk-sharing is not market-driven like the remainder of the company’s P&C insurance business. We believe that these measures are useful and meaningful to investors as they are used by management to assess the company’s global P&C operations which are the most economically similar. We exclude the North America Agricultural Insurance and Life Insurance segments because the results of these businesses do not always correlate with the results of our global P&C operations.

Tangible book value per common share is shareholders’ equity less goodwill and other intangible assets, net of tax, divided by the shares outstanding. We believe that goodwill and other intangible assets are not indicative of our underlying insurance results or trends and make book value comparisons to less acquisitive peer companies less meaningful.

See the reconciliation of Non-GAAP Financial Measures on pages 26-30 in the Financial Supplement. These measures should not be viewed as a substitute for measures determined in accordance with GAAP, including premium, net income, return on equity, and net investment income.

NM - not meaningful comparison

Chubb Limited News Release

Cautionary Statement Regarding Forward-Looking Statements:

Forward-looking statements made in this press release, such as those related to company performance, including 2021 performance and the impact of the COVID-19 pandemic, pricing, economic and market conditions, and our expectations and intentions and other statements that are not historical facts, reflect our current views with respect to future events and financial performance and are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Such statements involve risks and uncertainties that could cause actual results to differ materially, including without limitation, the following: competition, pricing and policy term trends, the levels of new and renewal business achieved, the frequency and severity of unpredictable catastrophic events, actual loss experience, uncertainties in the reserving or settlement process, integration activities and performance of acquired companies, loss of key employees or disruptions to our operations, new theories of liability, judicial, legislative, regulatory and other governmental developments, litigation tactics and developments, investigation developments and actual settlement terms, the amount and timing of reinsurance recoverable, credit developments among reinsurers, rating agency action, infection rates and severity of pandemics, including COVID-19, and their effects on our business operations and claims activity, possible terrorism or the outbreak and effects of war, economic, political, regulatory, insurance and reinsurance business conditions, potential strategic opportunities including acquisitions and our ability to achieve and integrate them, as well as management’s response to these factors, and other factors identified in our filings with the Securities and Exchange Commission (SEC).

Readers are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the dates on which they are made. We undertake no obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

Chubb Limited News Release

Chubb Limited

Summary Consolidated Balance Sheets

(in millions of U.S. dollars, except per share data)

(Unaudited)

Chubb Limited News Release

Chubb Limited

Summary Consolidated Financial Data

(in millions of U.S. dollars, except share, per share data, and ratios)

(Unaudited)