UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-34674 Calix, Inc. | --- | --- | --- | |---------------------------------------------------------|------------------------------------- ...

Calix, Inc. (NYSE:CALX) Q4 2020 Results Conference Call January 28, 2021 8:30 AM ET Company Participants Tom Dinges - Director, Investor Relations Carl Russo - President & Chief Executive Officer Cory Sindelar - Chief Financial Officer Michael Weening - President & Chief Operating Officer Conference Call Participants George Notter - Jefferies Paul Silverstein - Cowen Rich Valera - Needham & Company Christian Schwab - Craig-Hallum Tim Savageaux - Northland Capital Operator Greetings, and welcome to the Calix ...

Calix, Inc. (NYSE:CALX) Q3 2020 Earnings Conference Call October 21, 2020 8:30 AM ET Company Participants Tom Dinges - Director, Investor Relations Carl Russo - President & Chief Executive Officer Michael Weening - Executive Vice President & Chief Operating Officer Conference Call Participants George Notter - Jefferies Paul Silverstein - Cowen Rich Valera - Needham & Company Christian Schwab - Craig-Hallum Capital Group Tim Savageaux - Northland Capital Markets Operator Greetings. Welcome to the Calix Third ...

Financial Data and Key Metrics Changes - The second quarter of 2020 saw strong bookings driven by increased demand due to the COVID-19 pandemic, which accelerated trends in the communications industry [6][10] - The company delivered results above the high end of its guidance, indicating strong performance despite supply chain challenges [7][10] Business Line Data and Key Metrics Changes - The all-platform offerings are gaining traction, with 18 new customers added in the second quarter, reflecting a positive trend in customer acquisition [10] - Systems gross margins improved by three percentage points compared to previous quarters, attributed to better product and customer mix [11][13] Market Data and Key Metrics Changes - The company noted that all customer segments (large, medium, and small) are now growing, indicating a recovery from previous headwinds [25] - U.S. small carrier or rural broadband growth was significant, with estimates suggesting mid-20s growth rates [43] Company Strategy and Development Direction - The company is embracing a full work-from-anywhere culture, leading to a reduction in real estate footprint [8] - There is a focus on helping service providers transform their business models, which is seen as a strategic driver for future growth [45][53] Management Comments on Operating Environment and Future Outlook - Management highlighted that the pandemic has created a unique opportunity for service providers to accelerate their transformations, which is beneficial for the company's all-platform offerings [10][53] - The Rural Digital Opportunity Fund (RDOF) is expected to distribute funds in the third quarter of next year, with potential for earlier distribution depending on congressional discussions [30] Other Important Information - The company experienced challenges with expedite fees and spot charges on components due to supply chain issues, which impacted gross margins [15][16] - A bad debt write-off for one international customer was noted, but management does not expect similar occurrences in the future [27] Q&A Session Summary Question: Inquiry about gross margins and supply chain impacts - Management acknowledged that gross margins benefited from a favorable product mix and noted that expedite fees are included in gross margins, with ongoing supply chain challenges [12][15] Question: Clarification on Access EXOS Cloud and Edge revenue contribution - Management confirmed that the contribution from these segments remains between 10% and 50% of total revenue, continuing to grow aggressively [22][23] Question: Comments on CenturyLink's performance - Management expects CenturyLink to remain flat year-over-year, with no significant changes anticipated in their business plan [26][36] Question: Discussion on international market performance - International business is described as lumpy and smaller in proportion, with no significant conclusions to draw from recent performance [44] Question: Insights on supply chain outperforming expectations - Management indicated that the supply chain outperformed expectations for Q2, but does not view it in terms of market share against competitors [47][48] Question: Future demand scenarios and capacity additions - Management emphasized that while current demand is strong, the focus is on long-term strategic shifts rather than temporary pull-forwards [51][53]

Calix Inc. (NYSE:CALX) Q1 2020 Earnings Conference Call April 29, 2020 8:30 AM ET Company Participants Tom Dinges – Director-Investor Relations Carl Russo – President and Chief Executive Officer Cory Sindelar – Chief Financial Officer Conference Call Participants George Notter – Jefferies Christian Schwab – Craig-Hallum Paul Silverstein – Cowen Tim Savageaux – Northland Capital Markets Operator Greetings, and welcome to the CalixÂ's First Quarter 2020 Earnings Conference Call. At this time, all participants ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-K (Mark One) x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2019 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-34674 Calix, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 68-0438710 (State or Other Jurisdiction of Incorpora ...

January 28, 2020 Fellow Calix stockholders: Our mission is to connect everyone and everything. Calix platforms empower our customers to build new business models, rapidly deploy new services and make the promise of the smart, connected home and business a reality. The fourth quarter brought a fitting close to 2019, a pivotal year in our transformation. Beginning with significant headwinds from certain of our medium and large customers and a tariff accelerated redesign of our supply chain, 2019 saw us return ...

Financial Data and Key Metrics Changes - The company reported a 4% year-over-year increase in revenue for Q4 2019, achieving results at the high end of guidance [8][7] - Calix Cloud revenue more than tripled year-over-year and quadrupled for the full year [9] - The company forecasts double-digit year-over-year revenue growth for Q1 2020 [12] Business Line Data and Key Metrics Changes - The company added 20 new customers in Q4, totaling over 100 new customers for the second consecutive year [9] - The transformation to an all-platform company providing cloud, software, systems, and services to communication service providers (CSPs) continued with solid bookings [8] Market Data and Key Metrics Changes - The international business performed well, with CityFibre contributing to the ramp-up, although it was not solely attributable to one customer [32] Company Strategy and Development Direction - The company aims to continue diversifying its customer base, with expected growth in small customers and moderated growth in medium and large customers [15][16] - The focus is on transitioning from hardware to software, which is expected to drive margin improvements [24] Management's Comments on Operating Environment and Future Outlook - Management indicated that 2019 was a year of significant transformation and positioned the company to capitalize on the secular disruption in the communications service provider marketplace [12] - The company plans to invest in sales and marketing in line with revenue growth while keeping R&D and G&A expenses flat [22][34] Other Important Information - The company will host its 2020 Investor Day on March 4, 2020, to provide further updates [38] Q&A Session Summary Question: Trends in customer size and future growth - Management expects to continue diversifying the customer base, with more growth in small customers and less in medium and large [15][16] Question: Long-term EPS target and growth drivers - The long-term EPS guidance has been removed, with updates expected during the Analyst Meeting on March 4 [18] Question: Sales and marketing leverage - Management plans to invest in sales and marketing at a rate aligned with revenue growth, while keeping R&D and G&A expenses stable [22] Question: Impact of gross margin from hardware sales - The shift from hardware to software is expected to be the primary driver of margin improvements, rather than price declines [24] Question: Competitive dynamics in the market - No significant changes in competitive dynamics have been observed in the last 90 days [26] Question: Growth dynamics among smaller customers - Continuous programmatic growth is expected, with potential for double-digit growth in the small customer segment [28][30] Question: Expectations for gross margins throughout the year - Management anticipates gross margins will expand over time, but cautioned against expecting consistent quarter-to-quarter growth due to potential noise [36]

Financial Data and Key Metrics Changes - The company achieved flat year-over-year revenue in Q3 2019, marking a significant turn in the business, with revenue and earnings above market expectations [6][8] - The company generated cash and entered Q4 with a solid backlog of business, forecasting a return to growth [6][8] Business Line Data and Key Metrics Changes - The services business declined by 13% year-on-year, but the company expects modest revenue growth moving forward as the heavy lifting of low-margin deployment services is behind [28][29] - The mix of services is shifting towards higher differentiable value offerings, which are expected to lead to gross margin expansion [29][32] Market Data and Key Metrics Changes - The U.S. Tier 3 market has shown significant growth, with expectations for continued growth driven by small customers aggressively deploying fiber and wireless infrastructure [20][25] - The company is seeing a shift in customer demographics, moving from a focus on large customers to a broader base that includes municipalities, cable MSOs, and electric cooperatives [25][26] Company Strategy and Development Direction - The company is transforming into an all-platform provider, focusing on cloud, software, systems, and services for facilities-based CSPs [6][8] - The management is optimistic about the expansion of the addressable market and the growth of new platforms, which are expected to drive future revenue [16][22] Management's Comments on Operating Environment and Future Outlook - Management expressed confidence in the company's ability to achieve 50% or higher gross margins in the long term as revenue grows [15][17] - The company is positioned to benefit from the secular disruption in the communications service provider marketplace, with a strong pipeline of demand [8][22] Other Important Information - The company is hosting its 2019 Connections Event, which is anticipated to be the best yet, indicating a focus on customer engagement and market presence [8] - The management highlighted the importance of aligning services with customer success and the ongoing shift towards software and platforms [29][32] Q&A Session Summary Question: Insights on margins impacted by customer and product mix - Management explained that margins are affected by product mix and a large customer with better-than-average pricing, specifically mentioning Verizon as a significant customer [11][12] Question: Revenue base from new products - Management refrained from providing specific revenue figures but indicated that new platforms are growing rapidly and are material to the business [14] Question: Outlook for Tier 3 U.S. market growth - Management noted that the Tier 3 market is experiencing growth due to aggressive small customers deploying next-generation infrastructure [20][25] Question: Services business decline and future expectations - Management expects services revenue to start increasing modestly as the low-margin deployment services are behind, with a focus on higher-value offerings [28][29] Question: Transition from legacy to new products - Management indicated that the transition involves both acquiring new customers and encouraging existing customers to adopt new platforms, without forcing the change [34][36]

Calix, Inc. (NYSE:CALX) Q2 2019 Earnings Conference Call July 24, 2019 8:30 AM ET Company Participants Thomas Dinges - Director, IR Carl Russo - CEO, President & Director Cory Sindelar - CFO & CAO Conference Call Participants Paul Silverstein - Cowen and Company Christian Schwab - Craig-Hallum Capital Group George Notter - Jefferies Timothy Savageaux - Northland Capital Markets Fahad Najam - Cowen and Company Operator Greetings, and welcome to the Calix Second Quarter 2019 Earnings Conference Call. [Operato ...