# EDGAR Filing Document

**Accession Number:** 0001406666
**File Stem:** 0001406666-25-000043
**Filing Date:** 2025-10
**Character Count:** 53659
**Document Hash:** 25a9442fbc9b4b1b5c04552975b7f0c7
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001406666-25-000043.hdr.sgml**: 20251029

**ACCESSION NUMBER**: 0001406666-25-000043

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 26

**CONFORMED PERIOD OF REPORT**: 20251029

**ITEM INFORMATION**: Results of Operations and Financial Condition

**ITEM INFORMATION**: Financial Statements and Exhibits

**FILED AS OF DATE**: 20251029

**DATE AS OF CHANGE**: 20251029

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** CALIX, INC
- **CENTRAL INDEX KEY:** 0001406666
- **STANDARD INDUSTRIAL CLASSIFICATION:** COMMUNICATION SERVICES, NEC [4899]
- **ORGANIZATION NAME:** 06 Technology
- **EIN:** 680438710
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-34674
- **FILM NUMBER:** 251430186

**BUSINESS ADDRESS:**
- **STREET 1:** 3155 OLSEN DRIVE, SUITE 450
- **CITY:** SAN JOSE
- **STATE:** CA
- **ZIP:** 95117
- **BUSINESS PHONE:** 408-514-3000

**MAIL ADDRESS:**
- **STREET 1:** 3155 OLSEN DRIVE, SUITE 450
- **CITY:** SAN JOSE
- **STATE:** CA
- **ZIP:** 95117

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** CALIX NETWORKS INC
- **DATE OF NAME CHANGE:** 20070713

?xml version='1.0' encoding='ASCII'? calx-20251029

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**WASHINGTON, D.C. 20549**

**FORM 8-K**

**CURRENT REPORT**

**Pursuant to Section 13 or 15(d) of the**

**Securities Exchange Act of 1934**

**Date of Report (Date of earliest event reported): October 29, 2025** 

**CALIX, INC.**

**(Exact name of Registrant as specified in its charter)**

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| | | |
|:---|:---|:---|
| **Delaware** | **001-34674** | **68-0438710** |
| **(State or other jurisdiction<br>of incorporation)** | **(Commission<br>File No.)** | |
| **3155 Olsen Drive, Suite 450, San Jose, California** | **3155 Olsen Drive, Suite 450, San Jose, California** | **(I.R.S. Employer<br>Identification No.)**<br>**95117** |
| **(Address of principal executive offices)** | **(Address of principal executive offices)** | **(Zip Code)** |

---

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| |
|:---|
| **(408) 514-3000** |
| **(Registrant's telephone number, including area code)** |

---

---

| |
|:---|
| **Not Applicable** |
| **(Former name or former address if changed since last report)** |

---

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

---

| | | |
|:---|:---|:---|
| **Title of Each Class** | **Trading Symbol** | **Name of Each Exchange on Which Registered** |
| Common Stock, par value $0.025 per share | CALX | New York Stock Exchange |

---

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging Growth Company ☐

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If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act). □

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**Item 2.02 &nbsp;&nbsp;&nbsp;&nbsp;Results of Operations and Financial Condition.**

On October 29, 2025, Calix, Inc. (the "Company") issued a press release announcing it has publicly disseminated a stockholder letter with its financial results for the third quarter ended September 27, 2025. The press release is attached hereto as Exhibit 99.1. The stockholder letter, a copy of which is attached hereto as Exhibit 99.2 and incorporated herein by reference, includes reference to the non-GAAP measures of non-GAAP gross margin, non-GAAP operating expenses, non-GAAP sales and marketing investments, non-GAAP research and development investments, non-GAAP general and administrative investments, non-GAAP effective income tax rate, non-GAAP net income or profitability, non-GAAP net income per diluted common share and non-GAAP free cash flow. These non-GAAP measures are provided to enhance the reader's understanding of the Company's operating performance as they exclude non-cash stock-based compensation, intangible asset amortization and the impact from changes in income taxes, which the Company believes are not indicative of its core operating results. Management believes that the non-GAAP measures used in this stockholder letter provide investors with important perspectives into the Company's ongoing business performance and management uses these non-GAAP measures to evaluate financial results and to establish operational goals. The presentation of these non-GAAP measures is not meant to be a substitute for results presented in accordance with U.S. GAAP, but rather should be evaluated in conjunction with those GAAP results. A reconciliation of the non-GAAP results to the most directly comparable U.S. GAAP results is contained in tabular form in Exhibit 99.2. The non-GAAP financial measures used by the Company may be calculated differently from, and therefore may not be comparable to, similarly titled measures used by other companies.

Such information shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), and is not incorporated by reference into any filing of the Company, whether made before or after the date hereof, regardless of any general incorporation language in such filing.

**Item 9.01 &nbsp;&nbsp;&nbsp;&nbsp;Financial Statements and Exhibits.**

(d) Exhibits

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| | |
|:---|:---|
| **Exhibit No.** | **Description** |
| 99.1 | <u>[Press Release, dated](ex991pressrelease25q3.htm)[October](ex991pressrelease25q3.htm)[29](ex991pressrelease25q3.htm)[, 2025 announcing](ex991pressrelease25q3.htm)[third](ex991pressrelease25q3.htm)[quarter 2025 financial results.](ex991pressrelease25q3.htm)</u> |
| 99.2 | <u>[Stockholder Letter dated](ex992stockholderletter25q3.htm)[October 29](ex992stockholderletter25q3.htm)[, 2025 announcing financial results of the Company.](ex992stockholderletter25q3.htm)</u> |

---

------

**SIGNATURES**

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

---

| | | | |
|:---|:---|:---|:---|
| Date: | October 29, 2025 | CALIX, INC. | CALIX, INC. |
|  |  | By: | /s/ Cory Sindelar |
|  |  |  | **Cory Sindelar** |
|  |  |  | ***Chief Financial Officer*** |

---

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**EXHIBIT INDEX**

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| | |
|:---|:---|
| **Exhibit No.** | **Description** |
| 99.1 | <u>[Press Release, dated](ex991pressrelease25q3.htm)[October 29](ex991pressrelease25q3.htm)[, 2025 announcing](ex991pressrelease25q3.htm)[third](ex991pressrelease25q3.htm)[quarter 2025 financial results.](ex991pressrelease25q3.htm)</u> |
| 99.2 | <u>[Stockholder Letter dated](ex992stockholderletter25q3.htm)[October 29](ex992stockholderletter25q3.htm)[, 2025 announcing financial results of the Company.](ex992stockholderletter25q3.htm)</u> |

---

## Exhibit 99.1

**Exhibit 99.1**

![calixlogoa.jpg](calixlogoa.jpg)

**Calix Releases Third Quarter 2025 Financial Results**

SAN JOSE, CA – October 29, 2025 – Calix, Inc. (NYSE: CALX) today announced unaudited financial results for its third quarter of 2025, which have been posted as a letter to stockholders to the investor relations section of its website. Please visit the Calix investor relations website at <u>https://investor-relations.calix.com</u> to view the letter to stockholders.

A conference call to discuss these results with President and CEO Michael Weening and CFO Cory Sindelar will be held tomorrow, October 30, 2025, at 5:30 a.m. Pacific Time / 8:30 a.m. Eastern Time.

Interested parties may listen to a live webcast of the conference call by visiting the Events section of the <u>Calix Investor Relations website</u>. The live conference call will be available by dialing (877) 407-4019, or international (201) 689-8337, with conference ID# 13756202. Participants may also click <u>this link</u> for instant telephone access to the event. The link will become active approximately 15 minutes prior to the start of the conference call. The conference call and webcast will include forward-looking information.

A webcast replay of the conference call will be available following its completion and will be archived on the Calix Investor Relations website.

**About Calix**

<u>Calix, Inc.</u> (NYSE: CALX) — Calix delivers the industry's only agentic AI cloud and appliance-based platform, purpose-built over two decades with open standards and advanced security so service providers of all sizes can transform into experience providers. The platform combines agentic AI, intelligent appliances, and fully integrated managed services with Calix Customer Success and a partner community to simplify operations, engagement, and service, innovate for their consumer, business, and municipal subscribers, and grow their value for members, investors, and the communities they serve.

Category: Financial

**Investor Inquiries:**

Nancy Fazioli

VP, Investor Relations

InvestorRelations@calix.com

(669) 308-3901

## Exhibit 99.2

**Exhibit 99.2**

![calixlogoa.jpg](calixlogoa.jpg)

October 29, 2025

Fellow Calix stockholders:

During the third quarter of 2025, the Calix team delivered record revenue of $265 million, our 5<sup>th</sup> quarter of consecutive revenue growth and an impressive sequential growth rate of 10% while guiding to continued sequential growth in the fourth quarter, underscoring the robust demand for our unique platform model by our broadband experience provider (BXP) customers. We set another non-GAAP gross margin record, improving 90 basis points sequentially to 57.7%, our 7th quarter of consecutive margin improvement.

We added 20 new platform customers in the quarter as they began their journey to transform their business by leveraging our appliance-based platform, cloud and managed services to attract new subscribers, reduce churn and expand revenue per subscriber while supporting the communities they serve. As a result of our BXP customers' ongoing growth and success, our remaining performance obligations (RPOs) increased by 20% year-over-year and 2% quarter-over-quarter, reaching $355 million.

Our strong financial performance and balance sheet continued to distinguish our team's rigorous focus on operational excellence. Days sales outstanding (DSO) remained low at 30 days; inventory turns improved to 3.8; and we generated $27 million of free cash flow, the 10<sup>th</sup> consecutive quarter of eight-figure free cash flow, ending with record cash and investments of $340 million.

**Continuing to Cross the Chasm with our Third-Generation Platform for Agentic AI**

The clarity of our vision and strategy, commitment to long term customer transformation and financial strength enable our team to maximize opportunities for our BXP customers to take advantage of the ongoing commoditization of broadband by differentiating across market segments.

Building on 15 years and $2 billion invested, the unique Calix broadband platform has fueled our mission to enable BXPs of all sizes to **simplify** operations and go to market, **innovate** by delivering exceptional experiences to residential, small business, multi-dwelling units (MDUs), education, first responders and the communities they serve and to **grow** revenue, margin, customer satisfaction and their brand.

Last week at our annual ConneXions Customer Success and Innovation conference, we shared two key insights with customers on the 3<sup>rd</sup> generation of our platform:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• **Their investment in the Calix platform sets the foundation for agentic success**, as Access Edge, Experience Edge and Calix cloud provide the crucial capabilities – network and subscriber data, knowledge, trust and orchestration – to automate end-to-end with AI.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• **The 3**<sup>rd</sup> **generation platform and the Calix Agent Workforce will launch in the 4**<sup>th</sup> **quarter of 2025**, building on six years of BXP partnership, learning and insight.

As we shared in the July investor letter, our goals with the 3<sup>rd</sup> generation Calix platform are:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• **Accelerate customer success** on the Calix platform through new capabilities and the end-to-end enablement of the rapidly learning, adapting and expanding Calix Agent Workforce.

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• **Expand to new geographies** by enabling the launch of our platform, cloud, managed services and Calix Agent Workforce using sovereign local data centers in partnership with Google Cloud.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• **Launch the Calix private platform offering to large customers** by making the unique Calix platform, cloud, managed services and Calix Agent Workforce available on a private cloud in partnership with Google Cloud.

This exciting next stage of the Calix platform enables Calix to maintain our leadership position as the innovator in the broadband market by enabling new addressable markets while ensuring that our existing BXP customers maintain their leadership position as they **simplify**, **innovate** and **grow** through a platform that is purpose built for AI.

In addition, the launch of the Calix Agent Workforce will strengthen our ability to scale our customer success team and in turn, our BXP customers' success by automating and augmenting their capabilities, accelerating transformation and expanding their impact despite resource constraints.

Last, our third-generation platform will expand our development capabilities and speed time to market, enabling Calix to expedite the expansion of our platform solutions and the transformation processes that our customers need. At the same time, our agentic learnings uniquely enable the internal Calix enterprise to rapidly deploy AI to further improve our operations.

**The Calix Difference**

While delivering record results and bringing our third-generation platform to market, the Calix team continued to receive numerous industry awards for our culture and technology innovation in the quarter including:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• *Fortune* named Calix #21 on its list of the "Best Workplaces in Technology"

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• *Stevie Awards for Technology Excellence* recognized the Intelligent Access solution for "New Product of the Year"

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• *Comparably* recognized Calix in the large company category for "Happiest Employees", "Best Company Perks and Benefits" and "Best Company Work-Life Balance"

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• *iNFHRA*, India's premier association for workplace engagement, recognized Calix India for "Corporate Service"

As we close out 2025, our leadership team continues to align our strategy and investments to support our BXP customers' success as they transform to dominate the markets they serve, which fuels our long-term financial performance across four measurable objectives:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Deliberate revenue growth

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Gross margin expansion

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Disciplined operating expense investment

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Ongoing predictability

The disruption and commoditization of the broadband industry continue. With the introduction of the Calix Agent Workforce, we will accelerate the adoption of our platform, cloud and managed services with our ability to support BXPs' subscriber growth, footprint expansion and business transformation. We will do this while maintaining our own strong operating discipline, allowing us to expand our highly differentiated business model into new markets such as MDUs, new sovereign geographies and new private platform customers for years to come.

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**Third Quarter 2025 Financial Results**

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| | | | |
|:---|:---|:---|:---|
|  | **GAAP** | **Non-GAAP** | **Guidance Non-GAAP** <sup>1</sup> |
| Revenue | $265.4m | $265.4m | $243.0m – $249.0m |
| Gross margin | 57.3% | 57.7%<sup>2</sup> | 56.0% – 58.0% |
| Operating expenses | $134.6m | $114.7m<sup>2</sup> | $112.0m – $114.0m |
| Net income per diluted common share | $0.22 | $0.44<sup>2</sup> | $0.31 – $0.37 |

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<sup>1</sup> Non-GAAP guidance provided on July 21, 2025.

<sup>2</sup> Non-GAAP excludes stock-based compensation and intangible asset amortization as well as the income tax impact of these items. See GAAP to non-GAAP reconciliations beginning on page 15.

![a1reva.jpg](a1reva.jpg)

For the third quarter of 2025, revenue was $265.4 million, representing an increase of 10% from the prior quarter and an increase of 32% compared with the same quarter a year ago. We saw robust, broad-based demand from our BXP customers as well as the urgent need for appliances as we continue to take footprint from legacy box vendors. Experience Edge revenue increased by 11% and 62% from the prior quarter and year ago quarter, respectively, primarily due to our BXP customers' focus on the subscriber experience and adding subscribers. Access Edge revenue increased by 11% and 30% from the prior quarter and year ago quarter, respectively, driven by healthy demand this quarter for network technology investment and upgrades.

U.S. revenue was 94% of revenue for the third quarter of 2025, up from 91% in the second quarter of 2025 and 93% for the year ago quarter. U.S. revenue increased 14% sequentially and increased 33% compared with the year ago quarter. International revenue was 6% of revenue in the third quarter of 2025, down 29% sequentially and up 17% compared with the year ago period. The sequential decline in international revenue was primarily due to lower shipments to a European customer.

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![a2rpoa.jpg](a2rpoa.jpg)

RPOs result from long-term commitments made by our customers and consist mainly of Calix Cloud, managed services, extended warranties and support/maintenance agreements and exclude platform licenses, month-to-month usage-based models and true-ups to actual usage from minimum commitments. These minimum commitments generally have a three-year term at signing.

At the end of the third quarter of 2025, our RPOs were $354.6 million, which is an increase of $8.0 million, or 2%, from the prior quarter and an increase of $58.9 million, or 20%, from the same quarter a year ago. Current RPO was $140.8 million, up 5% from $134.3 million as compared with the prior quarter and up 28% from $110.1 million as compared with the year-ago quarter. The increases reflected continued strength as our BXP customers adopt our platform, cloud and managed services, add incremental cloud and managed service offerings and win new subscribers. We expect RPOs will continue to grow each quarter while the size of the increases may fluctuate quarter to quarter.

![a3platforma.jpg](a3platforma.jpg)

Expanded customer adoption of our platform, cloud and managed services was again evidenced by an increase in all three metrics compared with the prior quarter. As we have noted previously, the growth in subscribers and on-going adoption of our platform, cloud and managed services form the "expand" in our "land and expand" strategy. Over time, we expect the recurring revenue from continued platform, cloud and managed services adoption will drive higher gross margin.

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During the third quarter of 2025, we added 16 new Experience Edge and/or Access Edge platform deployments. By deploying the Experience Edge, BXPs can quickly implement and sell managed services, thereby enabling them to improve their average revenue per user at higher margins with the greatest levels of subscriber satisfaction.

We also added 14 new Calix Cloud deployments, which include Engagement Cloud, Operations Cloud and/or Service Cloud. Calix Cloud allows our BXPs to benefit from the power of data-driven insights to drive best-in-class Net Promoter Scores℠.

Our managed services continued to grow as 33 additional customers began deploying a managed service. We currently offer the following SmartLife™ managed services: SmartHome™ (which includes Wi-FiIQ, CommandIQ<sup>®</sup>, ProtectIQ<sup>®</sup> and ExperienceIQ<sup>®</sup>), Arlo Secure, Bark, SmartBiz™, SmartMDU™ and SmartTown<sup>®</sup>.

![a4custsizea.jpg](a4custsizea.jpg)

As we have discussed previously, technology disruptions start with small customers and eventually work their way up to large customers. For the third quarter of 2025, revenue from large customers increased sequentially by $6.9 million to a total of 13% of total revenue, up 1% of total revenue from last quarter, primarily related to continued healthy demand for network technology investment and upgrades, and increased $25.0 million, or up 8% of total revenue from the same quarter a year ago. The increase in large customers over the past year is related to strong Access Edge demand and customer expansion. Revenue from medium customers decreased $9.0 million to 11% of total revenue, down 5% of total revenue from last quarter, mainly due to reduced shipments to a European customer. Revenue from small customers accounted for 76% of revenue for the third quarter of 2025, up 4% of total revenue from the prior quarter and down 7% of total revenue from the year ago quarter. In absolute dollars, revenue from small customers increased sequentially by $25.7 million and year-over-year by $33.3 million. The increases are related to broad-based customer demand.

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![a5gma.jpg](a5gma.jpg)

Our GAAP gross margin for the third quarter of 2025 was a record 57.3%, an increase of 100 basis points sequentially and 250 basis points year-over-year. U.S. tariff and tariff-related costs were not material in the third quarter of 2025. Included in GAAP gross margin was stock-based compensation and intangible asset amortization. Excluding these items, our non-GAAP gross margin for the third quarter of 2025 was a record 57.7%, representing an increase of 90 basis points sequentially and 230 basis points from the year ago period. The sequential and year-over-year increases relate primarily to our BXP customers winning new subscribers and the continued adoption of our platform by new broadband service providers and to a lesser extent customer mix. We expect that gross margin will continue to increase each quarter; however, the amount of increase may vary from quarter to quarter depending on customer and product mix.

![a6opexa.jpg](a6opexa.jpg)

Our GAAP and non-GAAP operating expenses for the third quarter of 2025 were $134.6 million and $114.7 million, representing 51% and 43% of revenue, respectively. Sequentially, GAAP operating expenses decreased by $1.3 million primarily due to stock-based compensation, and non-GAAP operating expenses increased by $3.7 million due to increases in all functions. Compared with the year ago quarter, GAAP operating expenses increased by $13.7 million mainly due to stock-based compensation, and non-GAAP operating expenses increased by $9.4 million primarily related to personnel costs, including higher sales commissions and incentive compensation. Non-GAAP sales and marketing investments were 20% of revenue, which is within our Target Financial Model range of 18% to 20%. Non-GAAP research and development investments were 27% of gross profit, which is below our Target Financial Model of 29%. Non-GAAP general and administrative investments were 7% of revenue, which is in line with our Target Financial Model of 7%.

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![a7nia.jpg](a7nia.jpg)

Our GAAP net income was $15.7 million for the third quarter of 2025, an improvement of $15.9 million sequentially and $19.6 million from the year ago period. The improvement was primarily the result of higher revenue and gross margin partially offset by higher operating expenses. GAAP net income for the third quarter of 2025 included stock-based compensation of $20.6 million and intangible asset amortization of $0.4 million. Excluding these items, our non-GAAP net income was $30.6 million, an increase of $8.4 million compared with the prior quarter due primarily to higher revenue and gross margin. Non-GAAP net income increased $21.7 million when compared with $8.9 million from the year ago quarter due to higher revenue and gross margin.

**Balance Sheet and Cash Flow**

![a8cashconva.jpg](a8cashconva.jpg)

Our balance sheet remains strong. Our DSO at the end of the third quarter of 2025 was 30 days, up 6 days from the prior quarter and down 9 days from the year ago period, reflecting continued strong shipment linearity and the absence of early customer payments as seen in the second quarter of 2025. Our Target Financial Model for DSO remains between 35 and 45 days. Inventory turns were 3.8, up from 3.4 in the prior quarter and up from 3.2 a year ago. Inventory turns were within our Target Financial Model of 3 to 4 turns. In the third quarter of 2025, our inventory deposits decreased by $19.2 million, bringing our total inventory deposits to $24.3 million. Days payable outstanding (DPO) at the end of the third quarter was 18 days, up 1 day from the prior quarter and down 9 days from the year ago quarter. Our Target Financial Model for DPO is between 25 and 35 days. Our cash conversion cycle was 108 days

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compared with 113 days in the prior quarter and 127 days in the same quarter last year. Our Target Financial Model for our cash conversion cycle remains between 100 and 130 days.

![a9cfa.jpg](a9cfa.jpg)

We ended the third quarter of 2025 with record cash and investments of $339.6 million, which was a sequential quarterly increase of $40.7 million. The increase was primarily due to quarterly operating cash flow of $32.4 million and proceeds from equity-based employee benefit plans of $16.6 million partially offset by capital expenditures of $5.7 million and common stock repurchases of $3.5 million. Compared with the year ago period, our cash and investments increased by $52.0 million. The increase was primarily due to the generation of operating cash flow of $104.3 million and proceeds from equity-based employee benefit plans of $47.0 million partially offset by common stock repurchases of $84.0 million and capital expenditures of $18.9 million. We continue to expect both GAAP operating and non-GAAP free cash flow to remain strong due to continued non-GAAP profitability and a robust cash conversion cycle.

The remaining amount of the common stock repurchase authorization at the end of the third quarter of 2025 was $125.9 million.

**Fourth Quarter 2025 Guidance**

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| | | |
|:---|:---|:---|
| | **Guidance Non-GAAP** | **Guidance Reconciled to GAAP** |
| Revenue | $267m – $273m | $267m – $273m |
| Gross margin | 56.75% – 58.75%<sup>1</sup> | 56.45% – 58.45% |
| Operating expenses | $122.0m – $124.0m<sup>1</sup> | $141.0m – $143.0m |
| Net income per diluted common share<sup>2</sup> | $0.35 – $0.41<sup>1</sup> | $0.15 – $0.21 |

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<sup>1</sup> Non-GAAP excludes stock-based compensation as well as the income tax impact of these items. See GAAP to non-GAAP reconciliation on page 17.

<sup>2</sup> Based on 71.2 million weighted-average diluted common shares outstanding.

Our guidance for the fourth quarter of 2025, ending December 31, 2025, reflects our expectations as of the date of this letter.

Our revenue guidance for the fourth quarter of 2025 is for revenue to be between $267 million and $273 million, up 2% (at the midpoint) from the prior quarter taking into consideration the robust demand that we are seeing across our customer base.

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Our non-GAAP gross margin guidance for the fourth quarter of 2025 of 57.75% (at the midpoint) would be a slight increase from the prior quarter reflecting expected customer and product mix for the fourth quarter of 2025. This guidance would equate to annual gross margin improvement in 2025 at the high end of our Target Financial Model range of 100 to 200 basis points, reflecting the growth of our platform, cloud and managed services.

Our non-GAAP operating expense guidance for the fourth quarter of 2025 of $123.0 million (at the midpoint) represents an increase sequentially primarily related to investments in ConneXions, our annual customer success and innovation conference, and to accelerate the development of AI functionality and capabilities of our platform, cloud and managed services into the first half of 2026. We expect to return to our operating expense Target Financial Model in 2026.

We expect our non-GAAP effective tax rate for 2025 and 2026 will be in a range of 23% to 25%.

**Summary**

Our team has invested the last decade living the innovator's dilemma, transforming Calix from a systems to a platform company with the capability to transform the broadband industry by pursuing our mission to enable BXPs of all sizes to **simplify** operations and go to market and to **innovate** experiences across consumer, small business, municipality and MDU to **grow** for their members, investors and the communities they serve. Our product investment over the last two years has once again allowed us to take advantage of the biggest disruption in human history, artificial intelligence, by launching the Calix Agent Workforce. These investments and the resulting innovations position Calix and, more importantly, our BXP customers to lead.

As we close out 2025, we will enable the next level of transformation within our BXP customers through agentic AI and begin our internal transformation to evolve the way that we work to serve our customers while embracing new markets such as MDU, new sovereign geographies and new private platform customers for years to come.

The foundation for our growth continues to be based on three vectors:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• **New subscribers:** BXP customers leverage our platform, cloud and managed services to differentiate themselves in their markets thereby adding subscribers.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• **Existing subscribers:** BXP customers adopt additional platform extensions, cloud and managed services, enabling them to reduce their operational costs and grow revenue per subscriber.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• **New BXPs:** We continue to help legacy operators and operators in new customer segments and geographies become strategically aligned experience providers who recognize that our unique platform, cloud and managed services model enables their teams to transform their business as they **simplify** their operations, subscriber engagement and services, **innovate** for their consumer, business and municipal subscribers and **grow** their value for members, investors and the communities they serve.

With strong demand for our appliances, platform, cloud and managed services, we are confident in our sequential revenue growth, and we are excited by the multi-year outlook for our business. We remain focused on growing our footprint by adding to our BXP customer base and expanding the reach of our platform, cloud and managed services across their subscribers in the geographies they serve.

We thank our customers, employees, partners, vendors and stockholders for their continued support.

Sincerely,

------

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| | |
|:---|:---|
| ![weeningsiga.jpg](weeningsiga.jpg)<br>![weeningsiga.jpg](weeningsiga.jpg)<br>Michael Weening<br>President and CEO&nbsp;&nbsp;&nbsp;&nbsp; | ![sindelarsignaturea10a.jpg](sindelarsignaturea10a.jpg)<br>Cory Sindelar<br>CFO |

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**Conference Call**

In conjunction with this announcement, Calix will host a conference call tomorrow, October 30, 2025 at 5:30 a.m. Pacific Time / 8:30 a.m. Eastern Time to answer questions regarding our third quarter 2025 financial results. A live audio webcast and replay of the call will be available in the Investor Relations section of the Calix website at http://investor-relations.calix.com.

Live call access information: Dial-in number: (877) 407-4019 (U.S.) or (201) 689-8337 (outside the U.S.) ID# 13756202. The conference call and webcast will include forward-looking information.

**Investor Inquiries**

Nancy Fazioli

VP, Investor Relations

InvestorRelations@calix.com

(669) 308-3901

**About Calix**

Calix, Inc. (NYSE: CALX) — Calix delivers the industry's only agentic AI cloud and appliance-based platform, purpose-built over two decades with open standards and advanced security so service providers of all sizes can transform into experience providers. The platform combines agentic AI, intelligent appliances, and fully integrated managed services with Calix Customer Success and a partner community to simplify operations, engagement, and service, innovate for their consumer, business, and municipal subscribers, and grow their value for members, investors, and the communities they serve.

**Forward-Looking Statements**

Statements made in this stockholder letter and the earnings call referencing the stockholder letter that are not statements of historical fact are forward-looking statements. Forward-looking statements are subject to the "safe harbor" provisions of the Private Securities Litigation Reform Act of 1995. Forward-looking statements relate to, but are not limited to, impact from U.S. tariffs and trade policies, potential customer or market opportunities, growth and future opportunities, customer demand or the sustainability of continued demand, anticipated customer purchase trends, anticipated government funding, programs and proposals, expected customer and product mix or anticipated adoption or deployment of our appliances, platform, cloud or managed services, implementation of agentic AI, industry, market and customer trends, opportunities with existing and prospective customers, the timing of BEAD shipments, free cash flow and liquidity, continuation of our stock repurchase program and future financial performance (including the outlook for the fourth quarter of 2025, full year and future periods and performance against our Target Financial Model). Forward-looking statements are subject to risks and uncertainties that could cause actual results to differ materially from expectations, including but not limited to fluctuations in our financial and operating results, the capital spending decisions of our customers, U.S. tariffs, changes and disruptions in the market and industry, availability of capital in the market, potential for growth in our business driven by government funds, changes in and impacts of regulations and/or government sponsored programs, competition, our ability to achieve market acceptance of our appliances, platform, cloud or managed services, our ability to grow our customer base, our ability to implement agentic AI across our platform to scale our customer success team and our BXP customers' success, fluctuations in costs associated with our appliances and services including

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higher costs, dependence on third-parties for production and resource management associated with our global supply chain that may cause delays in production, inventory write-offs or component liabilities, cost overruns, disruptions in global trade and relations, social unrest and political uncertainties and other unanticipated factors, as well as the risks and uncertainties described in our annual report on Form 10-K and our quarterly reports on Form 10-Q, each as filed with the SEC and available at www.sec.gov, particularly in the sections titled "Risk Factors." Forward-looking statements speak only as of the date the statements are made and are based on information available to us at the time those statements are made and/or management's good faith belief as of that time with respect to future events. Calix assumes no obligation to update forward-looking statements to reflect actual performance or results, changes in assumptions or changes in other factors affecting forward-looking information, except to the extent required by applicable securities laws. Accordingly, investors should not place undue reliance on any forward-looking statements.

**Use of Non-GAAP Financial Information**

The Company uses certain non-GAAP financial measures in this stockholder letter to supplement its consolidated financial statements, which are presented in accordance with U.S. GAAP. These non-GAAP measures include non-GAAP gross margin, non-GAAP operating expenses, non-GAAP sales and marketing investments, non-GAAP research and development investments, non-GAAP general and administrative investments, non-GAAP effective income tax rate, non-GAAP net income or profitability, non-GAAP net income per diluted common share and non-GAAP free cash flow. These non-GAAP measures are provided to enhance the reader's understanding of the Company's operating performance as they exclude non-cash stock-based compensation, intangible asset amortization and the impact from changes in income taxes, which the Company believes are not indicative of its core operating results. Management believes that the non-GAAP measures used in this stockholder letter provide investors with important perspectives into the Company's ongoing business performance and management uses these non-GAAP measures to evaluate financial results and to establish operational goals. The presentation of these non-GAAP measures is not meant to be a substitute for results presented in accordance with GAAP, but rather should be evaluated in conjunction with those GAAP results. A reconciliation of the non-GAAP results to the most directly comparable GAAP results is provided in this stockholder letter. The non-GAAP financial measures used by the Company may be calculated differently from, and therefore may not be comparable to, similarly titled measures used by other companies.

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| | | | | |
|:---|:---|:---|:---|:---|
| **Calix, Inc.** | **Calix, Inc.** | **Calix, Inc.** | **Calix, Inc.** | **Calix, Inc.** |
| **Condensed Consolidated Statements of Operations** | **Condensed Consolidated Statements of Operations** | **Condensed Consolidated Statements of Operations** | **Condensed Consolidated Statements of Operations** | **Condensed Consolidated Statements of Operations** |
| **(Unaudited, in thousands, except per share data)** | **(Unaudited, in thousands, except per share data)** | **(Unaudited, in thousands, except per share data)** | **(Unaudited, in thousands, except per share data)** | **(Unaudited, in thousands, except per share data)** |
| | **Three Months Ended** | **Three Months Ended** | **Nine Months Ended** | **Nine Months Ended** |
| | **September 27,** | **September 28,** | **September 27,** | **September 28,** |
|  | **2025** | **2024** | **2025** | **2024** |
| Revenue | $265437 | $200945 | $727561 | $625394 |
| Cost of revenue | 113427 | 90898 | 316548 | 285167 |
| Gross profit | 152010 | 110047 | 411013 | 340227 |
| Operating expenses: |  |  |  |  |
| Sales and marketing | 60257 | 52301 | 181969 | 158436 |
| Research and development | 47055 | 45467 | 136822 | 134012 |
| General and administrative | 27293 | 23175 | 80507 | 72063 |
| Total operating expenses | 134605 | 120943 | 399298 | 364511 |
| Operating income (loss) | 17405 | (10896) | 11715 | (24284) |
| Interest income and other expense, net: |  |  |  |  |
| Interest income, net | 3264 | 3282 | 9510 | 8877 |
| Other expense, net | (335) | (178) | (454) | (599) |
| Total interest income and other expense, net | 2929 | 3104 | 9056 | 8278 |
| Income (loss) before income taxes | 20334 | (7792) | 20771 | (16006) |
| Income taxes (benefit) | 4676 | (3824) | 10099 | (4183) |
| Net income (loss) | $15658 | $(3968) | $10672 | $(11823) |
| Net income (loss) per common share: |  |  |  |  |
| Basic | $0.24 | $(0.06) | $0.16 | $(0.18) |
| Diluted | $0.22 | $(0.06) | $0.15 | $(0.18) |
| Weighted average number of shares used to compute net income (loss) per common share: |  |  |  |  |
| Basic | 65753 | 66078 | 65771 | 65700 |
| Diluted | 69789 | 66078 | 68973 | 65700 |

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| | | |
|:---|:---|:---|
| **Calix, Inc.** | **Calix, Inc.** | **Calix, Inc.** |
| **Condensed Consolidated Balance Sheets** | **Condensed Consolidated Balance Sheets** | **Condensed Consolidated Balance Sheets** |
| **(Unaudited, in thousands)** | **(Unaudited, in thousands)** | **(Unaudited, in thousands)** |
| | **September 27,** | **December 31,** |
|  | **2025** | **2024** |
| **ASSETS** | **ASSETS** | **ASSETS** |
| Current assets: |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Cash and cash equivalents | $95012 | $43162 |
| &nbsp;&nbsp;&nbsp;&nbsp;Marketable securities | 244611 | 253929 |
| &nbsp;&nbsp;&nbsp;&nbsp;Accounts receivable, net | 87465 | 79321 |
| &nbsp;&nbsp;&nbsp;&nbsp;Inventory | 107981 | 102727 |
| &nbsp;&nbsp;&nbsp;&nbsp;Prepaid expenses and other current assets | 80448 | 105596 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Total current assets | 615517 | 584735 |
| Property and equipment, net | 32722 | 31153 |
| Right-of-use operating leases | 10822 | 6216 |
| Deferred tax assets | 168712 | 177601 |
| Goodwill | 116175 | 116175 |
| Other assets | 32421 | 23387 |
|  | $976369 | $939267 |
| **LIABILITIES AND STOCKHOLDERS' EQUITY** | **LIABILITIES AND STOCKHOLDERS' EQUITY** | **LIABILITIES AND STOCKHOLDERS' EQUITY** |
| Current liabilities: |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Accounts payable | $20138 | $20226 |
| &nbsp;&nbsp;&nbsp;&nbsp;Accrued liabilities | 78511 | 84167 |
| &nbsp;&nbsp;&nbsp;&nbsp;Deferred revenue | 23992 | 26750 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total current liabilities | 122641 | 131143 |
| Long-term portion of deferred revenue | 19939 | 20883 |
| Operating leases | 9270 | 3720 |
| Other long-term liabilities | 2013 | 2581 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total liabilities | 153863 | 158327 |
| Stockholders' equity: |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Common stock | 1657 | 1661 |
| &nbsp;&nbsp;&nbsp;&nbsp;Additional paid-in capital | 1200506 | 1170017 |
| &nbsp;&nbsp;&nbsp;&nbsp;Accumulated other comprehensive loss | (203) | (612) |
| &nbsp;&nbsp;&nbsp;&nbsp;Accumulated deficit | (379454) | (390126) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total stockholders' equity | 822506 | 780940 |
|  | $976369 | $939267 |

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| | | |
|:---|:---|:---|
| **Calix, Inc.** | **Calix, Inc.** | **Calix, Inc.** |
| **Condensed Consolidated Statements of Cash Flows** | **Condensed Consolidated Statements of Cash Flows** | **Condensed Consolidated Statements of Cash Flows** |
| **(Unaudited, in thousands)** | **(Unaudited, in thousands)** | **(Unaudited, in thousands)** |
| | **Nine Months Ended** | **Nine Months Ended** |
| | **September 27,** | **September 28,** |
|  | **2025** | **2024** |
| **Operating activities:** |  |  |
| Net income (loss) | $10672 | $(11823) |
| Adjustments to reconcile net income (loss) to net cash provided by operating activities: |  |  |
| Stock-based compensation | 65976 | 48686 |
| Depreciation and amortization | 13310 | 14805 |
| Deferred income taxes | 8778 | (10420) |
| Net accretion of available-for-sale securities | (3001) | (3958) |
| Changes in operating assets and liabilities: |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Accounts receivable, net | (8144) | 40755 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Inventory | (5255) | 32376 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Prepaid expenses and other assets | 11297 | 7659 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Accounts payable | (71) | (11809) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Accrued liabilities | (5936) | (39768) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Deferred revenue | (3702) | (10636) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Other long-term liabilities | 4983 | (2830) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Net cash provided by operating activities | 88907 | 53037 |
| **Investing activities:** |  |  |
| Purchases of property and equipment | (13670) | (12905) |
| Purchases of marketable securities | (166936) | (228456) |
| Sales of marketable securities | 11362 | 49905 |
| Maturities of marketable securities | 168350 | 115529 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Net cash used in investing activities | (894) | (75927) |
| **Financing activities:** |  |  |
| Proceeds from common stock issuances related to employee benefit plans | 40821 | 25433 |
| Repurchases of common stock | (77010) | (3738) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Net cash provided by (used in) financing activities | (36189) | 21695 |
| Effect of exchange rate changes on cash and cash equivalents | 26 | 147 |
| Net increase (decrease) in cash and cash equivalents | 51850 | (1048) |
| Cash and cash equivalents at beginning of period | 43162 | 63409 |
| Cash and cash equivalents at end of period | $95012 | $62361 |

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Calix, Inc.** | **Calix, Inc.** | **Calix, Inc.** | **Calix, Inc.** | **Calix, Inc.** | **Calix, Inc.** |
| **Reconciliation of GAAP to Non-GAAP Gross Margin** | **Reconciliation of GAAP to Non-GAAP Gross Margin** | **Reconciliation of GAAP to Non-GAAP Gross Margin** | **Reconciliation of GAAP to Non-GAAP Gross Margin** | **Reconciliation of GAAP to Non-GAAP Gross Margin** | **Reconciliation of GAAP to Non-GAAP Gross Margin** |
| **(Unaudited)** | **(Unaudited)** | **(Unaudited)** | **(Unaudited)** | **(Unaudited)** | **(Unaudited)** |
| | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** |
| | **September 27,<br>2025** | **June 28,<br>2025** | **March 29,<br>2025** | **December 31,<br>2024** | **September 28,<br>2024** |
| GAAP gross margin | 57.3% | 56.3% | 55.7% | 55.0% | 54.8% |
| Adjustments to GAAP amount: |  |  |  |  |  |
| Stock-based compensation | 0.3 | 0.4 | 0.4 | 0.4 | 0.3 |
| Intangible asset amortization | 0.1 | 0.1 | 0.1 | 0.1 | 0.3 |
| Non-GAAP gross margin | 57.7% | 56.8% | 56.2% | 55.5% | 55.4% |

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Calix, Inc.** | **Calix, Inc.** | **Calix, Inc.** | **Calix, Inc.** | **Calix, Inc.** | **Calix, Inc.** |
| **Reconciliation of GAAP to Non-GAAP Operating Expenses** | **Reconciliation of GAAP to Non-GAAP Operating Expenses** | **Reconciliation of GAAP to Non-GAAP Operating Expenses** | **Reconciliation of GAAP to Non-GAAP Operating Expenses** | **Reconciliation of GAAP to Non-GAAP Operating Expenses** | **Reconciliation of GAAP to Non-GAAP Operating Expenses** |
| **(Unaudited, in thousands)** | **(Unaudited, in thousands)** | **(Unaudited, in thousands)** | **(Unaudited, in thousands)** | **(Unaudited, in thousands)** | **(Unaudited, in thousands)** |
| | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** |
| | **September 27,** | **June 28,** | **March 29,** | **December 31,** | **Sept. 28,** |
|  | **2025** | **2025** | **2025** | **2024** | **2024** |
| GAAP operating expenses: |  |  |  |  |  |
| &nbsp;&nbsp;Sales and marketing | $60257 | $63653 | $58059 | $59443 | $52301 |
| &nbsp;&nbsp;Research and development | 47055 | 45787 | 43980 | 45858 | 45467 |
| &nbsp;&nbsp;General and administrative | 27293 | 26464 | 26750 | 26816 | 23175 |
|  | 134605 | 135904 | 128789 | 132117 | 120943 |
| Stock-based compensation: |  |  |  |  |  |
| &nbsp;&nbsp;Sales and marketing | (6158) | (11047) | (6469) | (7138) | (4630) |
| &nbsp;&nbsp;Research and development | (5965) | (5890) | (5081) | (5388) | (4783) |
| &nbsp;&nbsp;General and administrative | (7742) | (7912) | (7415) | (8729) | (6188) |
|  | (19865) | (24849) | (18965) | (21255) | (15601) |
| Non-GAAP operating expenses: |  |  |  |  |  |
| &nbsp;&nbsp;Sales and marketing | 54099 | 52606 | 51590 | 52305 | 47671 |
| &nbsp;&nbsp;Research and development | 41090 | 39897 | 38899 | 40470 | 40684 |
| &nbsp;&nbsp;General and administrative | 19551 | 18552 | 19335 | 18087 | 16987 |
|  | $114740 | $111055 | $109824 | $110862 | $105342 |

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Calix, Inc.** | **Calix, Inc.** | **Calix, Inc.** | **Calix, Inc.** | **Calix, Inc.** | **Calix, Inc.** |
| **Reconciliation of GAAP Net Income (Loss) to Non-GAAP Net Income** | **Reconciliation of GAAP Net Income (Loss) to Non-GAAP Net Income** | **Reconciliation of GAAP Net Income (Loss) to Non-GAAP Net Income** | **Reconciliation of GAAP Net Income (Loss) to Non-GAAP Net Income** | **Reconciliation of GAAP Net Income (Loss) to Non-GAAP Net Income** | **Reconciliation of GAAP Net Income (Loss) to Non-GAAP Net Income** |
| **(Unaudited, in thousands)** | **(Unaudited, in thousands)** | **(Unaudited, in thousands)** | **(Unaudited, in thousands)** | **(Unaudited, in thousands)** | **(Unaudited, in thousands)** |
| | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** |
| | **September 27,** | **June 28,** | **March 29,** | **December 31,** | **Sept. 28,** |
|  | **2025** | **2025** | **2025** | **2024** | **2024** |
| GAAP net loss | $15658 | $(199) | $(4787) | $(17924) | $(3968) |
| Adjustments to GAAP amount: |  |  |  |  |  |
| &nbsp;&nbsp;Stock-based compensation | 20618 | 25613 | 19745 | 22075 | 16371 |
| &nbsp;&nbsp;Intangible asset amortization | 381 | 228 | 298 | 298 | 604 |
| &nbsp;&nbsp;Income tax effect of non-GAAP adjustments | (6071) | (3398) | (2125) | 781 | (4100) |
| Non-GAAP net income | $30586 | $22244 | $13131 | $5230 | $8907 |

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Calix, Inc.** | **Calix, Inc.** | **Calix, Inc.** | **Calix, Inc.** | **Calix, Inc.** | **Calix, Inc.** |
| **Non-GAAP Free Cash Flow Reconciliation** | **Non-GAAP Free Cash Flow Reconciliation** | **Non-GAAP Free Cash Flow Reconciliation** | **Non-GAAP Free Cash Flow Reconciliation** | **Non-GAAP Free Cash Flow Reconciliation** | **Non-GAAP Free Cash Flow Reconciliation** |
| **(Unaudited, in thousands)** | **(Unaudited, in thousands)** | **(Unaudited, in thousands)** | **(Unaudited, in thousands)** | **(Unaudited, in thousands)** | **(Unaudited, in thousands)** |
| | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** |
| | **September 27,** | **June 28,** | **March 29,** | **December 31,** | **Sept. 28,** |
|  | **2025** | **2025** | **2025** | **2024** | **2024** |
| Net cash provided by operating activities | $32314 | $39381 | $17212 | $15363 | $15999 |
| Purchases of property and equipment | (5625) | (3735) | (4310) | (5149) | (3244) |
| Non-GAAP free cash flow | $26689 | $35646 | $12902 | $10214 | $12755 |

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| | |
|:---|:---|
| **Calix, Inc.** | **Calix, Inc.** |
| **Reconciliation of GAAP Net Income to Non-GAAP Net Income Per Diluted Common Share**<sup>1</sup> | **Reconciliation of GAAP Net Income to Non-GAAP Net Income Per Diluted Common Share**<sup>1</sup> |
| **(Unaudited)** | **(Unaudited)** |
| | **Three Months Ended<br>September 27, 2025** |
| GAAP net income per diluted common share | $0.22 |
| Adjustments to GAAP amount: |  |
| Stock-based compensation | 0.30 |
| Intangible asset amortization | 0.01 |
| Income tax effect of non-GAAP adjustments | (0.09) |
| Non-GAAP net income per diluted common share | $0.44 |

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<sup>1</sup> Based on 69.8 million weighted-average diluted common shares outstanding.

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| | | | |
|:---|:---|:---|:---|
| **Calix, Inc.** | **Calix, Inc.** | **Calix, Inc.** | **Calix, Inc.** |
| **Reconciliation of GAAP to Non-GAAP Guidance** | **Reconciliation of GAAP to Non-GAAP Guidance** | **Reconciliation of GAAP to Non-GAAP Guidance** | **Reconciliation of GAAP to Non-GAAP Guidance** |
| **(Unaudited, dollars in thousands, except per share data)** | **(Unaudited, dollars in thousands, except per share data)** | **(Unaudited, dollars in thousands, except per share data)** | **(Unaudited, dollars in thousands, except per share data)** |
| **Three Months Ending December 31, 2025** | **Three Months Ending December 31, 2025** | **Three Months Ending December 31, 2025** | **Three Months Ending December 31, 2025** |
| | **GAAP** | **Stock-Based Compensation** | **Non-GAAP** |
| Gross margin | 56.45% - 58.45% | 0.3% | 56.75% - 58.75% |
| Operating expenses | $141000 - $143000 | $(19000) | $122000 - $124000 |
| Net income per diluted common share<sup>1</sup> | $0.15 - $0.21 | $0.20 <sup>2</sup> | $0.35 - $0.41 |

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<sup>1</sup> Based on 71.2 million weighted-average diluted common shares outstanding.

<sup>2</sup> Net of income taxes.