Calix Upgraded to Rating of AA From MSCI Due to Industry-Leading Sustainability Programs and Results

SAN JOSE, CA—April 18, 2024—Calix, Inc. (NYSE: CALX) announces it has achieved an AA rating from the environmental, social, and governance ratings agency MSCI. This represents a notable achievement just one year after Calix formally established its office of sustainability, tapping Martha Galley to lead as chief sustainability officer. As of 2024, Calix has earned a cumulative “Industry-Adjusted” score of 7.3 to achieve an AA rating from MSCI—up from a score of 6.8 and an A rating in 2023. This recognizes Calix as an industry leader in sustainability, a distinction shared by only 18 percent of the approximately 8,500 companies evaluated by MSCI.

MSCI conducts comprehensive research, ratings, and analysis of the environmental, social, and governance practices of thousands of global companies, offering institutional investors essential insights into risks and opportunities beyond traditional investment analysis.

The company maintained or grew its score in every category, with its strongest performance in social responsibility. Calix earned a social score of 5.2 compared to an industry average score of 4.4. This increase was driven by the company's leadership in human capital development, including its highly effective strategy for attracting and retaining top talent. Over the past two years, the Calix workforce has grown over 60 percent, operating under a fully remote work policy since 2016.

Calix continually innovates for the Calix Broadband Platform, which enables broadband service providers (BSPs) to build energy-efficient networks and easily deliver an array of broadband services that positively impact their communities. Calix-partnered BSPs can deploy broadband networks with up to 50 percent less power consumption and data center space than traditional networks. Additionally, the Calix Platform and extensive portfolio of Wi-Fi systems help subscribers cut broadband power consumption in half by reducing power usage and extending home Wi-Fi coverage.

"Earning an AA rating from MSCI underscores the purpose-driven innovation that informs everything we do at Calix," said Galley. "As we continue our mission to help our customers simplify operations, innovate for subscribers, and grow their businesses and the communities they serve, we remain committed to transparency and environmental stewardship. We also invest in growing a highly skilled workforce to collaborate with customers and partners so we can continue to make positive societal contributions.”

Learn more about the Calix commitment to a sustainable business future.

About Calix
This press release contains forward-looking statements that are based upon management’s current expectations and are inherently uncertain. Forward-looking statements are based upon information available to us as of the date of this release, and we assume no obligation to revise or update any such forward-looking statement to reflect any event or circumstance after the date of this release, except as required by law. Actual results and the timing of events could differ materially from current expectations based on risks and uncertainties affecting Calix’s business. The reader is cautioned not to rely on the forward-looking statements contained in this press release. Additional information on potential factors that could affect Calix’s results and other risks and uncertainties are detailed in its quarterly reports on Form 10-Q and Annual Report on Form 10-K filed with the SEC and available at www.sec.gov.

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