CALX at a glance
CALIX, INC (CALX, SEC CIK 1406666) filed its latest 10-K annual report on February 20, 2026, a 10-Q quarterly report on July 21, 2026, an 8-K current report on July 20, 2026 and Form 4 insider filings as recently as September 29, 2026. SignalX summarizes each filing with AI and tracks the company's insider trades and institutional holders.
- For the fiscal year ended December 31, 2025 (FY2025), CALIX, INC (CALX) reported revenue of $1.0 billion (up 20.3% from FY2024) and net income of $17.9 million. Diluted EPS was $0.26.
- As of June 30, 2026, 30 institutional investment managers tracked by SignalX reported holding CALIX, INC (CALX) shares worth $1.2 billion in 13F-HR filings.
- The most recent insider open-market sale reported on Form 4 was by Russo Carl on July 27, 2026 of 75,000 shares at $36.20 per share.
- In the last 90 days, CALX insiders reported 0 open-market purchases ($0) and 1 open-market sale ($2.7M) on Form 4, a net sale of $2.7M.
Source: SEC EDGAR (XBRL financial data, 13F-HR and Form 4 filings).
- Revenue · FY2025
- $1.0B
- +20.3% vs prior year
- Insiders · 90 days
- 0 buys · 1 sell
- Net −$2.7M
- 13F holders
- 30 funds
- $1.2B · −3 vs prior quarter
- Latest 8-K
- Jul 20, 2026
- Item 2.02
AI 10-K Annual Report Analysis
Latest 10-K, fiscal year ended Dec 31, 2025
Business Overview
- Core business: AI-powered platform, cloud, and managed services enabling communication service providers (CXPs) to transform and grow subscriber experiences
- New emphasis on agentic AI with Calix Agent Workforce integrating marketing, operations, support, and subscriber self-service roles
- Strategic focus on expanding SmartLife managed services portfolio including SmartHome, SmartTown, SmartBiz, and SmartMDU to diversify services and markets
- Employee count rose to 1,921 globally, including expanded engineering teams in the US, China, and India
- Noteworthy: Calix’s platform supports at least two fiber-to-the-home providers competing per market, emphasizing CXPs' choice between speed provider vs experience provider models
Risk Factors
- Regulatory/legal risk: AI and Cybersecurity Committee oversight newly expanded in 2025 to include AI risk management under Board governance
- Operational risk: Key-person dependency on Chief Operating Officer and Chief Product Officer for managing cybersecurity and AI risks
- Financial/structural risk: Loss of former Chief Commercial Operations Officer with pivotal cybersecurity governance role may impact risk management continuity
Management Discussion & Analysis
- $148.7M common stock repurchased in 2026 year-to-date, $109.3M stock repurchase authorization available as of Dec 31, 2025
- Board authorized $125.0M increase to stock repurchase program in January 2026
- Total contractual obligations $336.1M: $317.8M purchase commitments, $18.4M operating leases
- Management expects current cash, equivalents, and marketable securities sufficient for next 12 months’ needs
AI summary of the CALX 10-K filed . Generated from the filing text; verify against the original.View on SEC EDGARHow to read a 10-K
AI 10-Q Quarterly Report Analysis
Latest 10-Q, quarter ended Jun 27, 2026
Management Discussion & Analysis
- Revenue $293.3M, up 21% YoY from $241.9M, led by Appliance revenue $242.8M, up 23%
- Overall gross margin 54.6% vs 56.3% YoY, pressured by increased component memory costs
- Software and service highest-margin segment at 63.0% vs 65.0% YoY; Appliance margin 52.8% vs 54.4%
- Cash, equivalents and marketable securities $194.3M; operating cash flow $31.1M vs $56.6M YoY
- Share repurchases $240.2M for 5.0M shares; memory shortages, tariffs and dynamic trade policies remained headwinds
Risk Factors
- New AI risk: agentic AI offerings remain early-stage, with uncertain market acceptance and rapidly evolving regulation
- Supply-chain risk: memory prices elevated by manufacturing capacity reallocation toward global AI infrastructure
- Regulatory risk: California and other states’ AI laws create a fragmented U.S. compliance framework
- Operational risk: sole-source Asian suppliers heighten exposure to shortages, tariffs, and extended component lead times
- Financial risk: nonrecurring revenue and customers’ ability to cancel orders increase revenue and cash-flow volatility
AI summary of the CALX 10-Q filed . Generated from the filing text; verify against the original.View on SEC EDGAR10-K vs 10-Q vs 8-K
AI 8-K Current Report Analysis
The most recent material events, by 8-K item
Item 2.02: Results of Operations and Financial Condition
- Calix reported financial results for Q2 ended June 27, 2026, via stockholder letter
- Exhibit 99.2 contains GAAP results and reconciliations for non-GAAP performance measures
Item EX-99.1: Item EX-99.1
- Q2 2026 unaudited financial results released for Calix
- Detailed results provided in the stockholder letter on Calix’s investor relations website
Item 5.07: Submission of Matters to a Vote of Security Holders
- All three Class I directors re-elected through 2029; Michael Weening received the strongest support with 48,150,666 votes
- Stock purchase plan expanded by 672,300 reserved shares, increasing potential employee equity issuance and dilution
Item 2.02: Results of Operations and Financial Condition
- Q1 FY2026 results covered quarter ended March 28, 2026
- Stockholder letter provides financial results and GAAP-to-non-GAAP reconciliations in Exhibit 99.2
Item EX-99.1: Item EX-99.1
- Q1 2026 financial results released, with detailed figures provided in the stockholder letter on Calix’s investor relations website
- Investor Day on April 22 to outline Calix One roadmap, operating priorities, financial framework, and capital allocation
AI summaries of CALX 8-K current reports filed with the SEC. What 8-K item codes mean
SignalX for CALX
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Recent Insider Transactions (Form 4)
Latest reported trades by officers, directors and 10% owners
| Insider | Type | Date | Shares | Price |
|---|---|---|---|---|
| Russo Carl | A | Sep 28, 2026 | 17,603 | - |
| Russo Carl | Sell | Jul 27, 2026 | 75,000 | $36.20 |
| Russo Carl | A | Jun 29, 2026 | 15,999 | - |
| BOWICK CHRISTOPHER J | A | May 14, 2026 | 4,967 | - |
| Peters Kevin Robert | A | May 14, 2026 | 4,967 | - |
| Mukherjee Rajatish | A | May 14, 2026 | 4,967 | - |
| Russo Carl | A | May 14, 2026 | 4,967 | - |
| CRUSCO KATHLEEN M | A | May 14, 2026 | 4,967 | - |
Financial SummaryXBRL
| Metric | FY2023 | FY2024 | FY2025 |
|---|---|---|---|
| Profitability | |||
| Revenue | - | $831.5M | $1.0B |
| Gross Profit | - | $453.6M | $568.3M |
| Operating Income | - | -$43.0M | $21.0M |
| Net Income | - | -$29.7M | $17.9M |
| Gross Margin | - | 54.6% | 56.8% |
| Op. Margin | - | -5.2% | 2.1% |
| Net Margin | - | -3.6% | 1.8% |
| Balance Sheet | |||
| Total Assets | $941.9M | $939.3M | $1.1B |
| Equity | $719.0M | $780.9M | $859.2M |
| ROE | - | -3.8% | 2.1% |
| Per Share | |||
| EPS | - | $-0.45 | $0.26 |
| Cash Flow | |||
| Operating CF | - | $68.4M | $135.0M |
| CapEx | - | $18.1M | $19.4M |
Source: XBRL data in CALIX, INC (CALX)'s 10-K filings on SEC EDGAR, in USD. Compare across companies →
13F Fund Holdings: Quarterly Trend
Latest: Q2 2026Aggregate CALX share value held by 13F filers tracked by SignalX, by quarter.
Quarterly totals table
| Quarter | Funds | Total value |
|---|---|---|
| Q2 2026 | 30 | $1.18B |
| Q1 2026 | 33 | $1.49B |
| Q4 2025 | 31 | $1.58B |
| Q3 2025 | 32 | $1.90B |
| Q2 2025 | 30 | $1.62B |
| Q1 2025 | 25 | $662.5M |
| Q4 2024 | 21 | $612.7M |
| Q3 2024 | 18 | $348.8M |
- Citadel Advisors LLC+780.6K (+182%)
- BlackRock+622.1K (+6%)
- Two Sigma Investments+542.5K (+336%)
- D.E. Shaw & Co+388.0K (+1841%)
- State Street Corp+313.2K (+12%)
- Millennium Management−1.21M (-63%)
- Bank of America Corp−190.1K (-25%)
- Morgan Stanley−187.3K (-26%)
- Vanguard Capital Management LLC−99.1K (-4%)
- BNY Mellon−65.6K (-17%)
- Blackstone Group−56.4K
- Allstate−14.0K
- HANCOCK WHITNEY CORP−4.7K
Source: 13F-HR filings on SEC EDGAR (aggregated from 220 fund-quarter rows). Reflects only 13F filers tracked by SignalX, not the full institutional ownership universe. How 13F filings work
CALX filing archive
AI analysis pages for each 10-K, 10-Q and 8-K
10-K annual reports
10-Q quarterly reports
8-K current reports
Latest 2026 SEC Filings: 10-K, 10-Q, 8-K & Form 4
| Form | Filing date | Period | Analysis | SEC |
|---|---|---|---|---|
| 4 | Sep 29, 2026 | - | - | - |
| 4 | Jul 28, 2026 | - | - | - |
| 10-Q | Jul 21, 2026 | Jun 27, 2026 | Analysis | |
| 8-K | Jul 20, 2026 | - | Analysis | - |
| 4 | Jun 30, 2026 | - | - | - |
| 4 | May 18, 2026 | - | - | |
| 4 | May 18, 2026 | - | - | |
| 4 | May 18, 2026 | - | - | |
| 4 | May 18, 2026 | - | - | |
| SC 13G | May 18, 2026 | - | - | |
| 4 | May 18, 2026 | - | - | |
| 4 | May 18, 2026 | - | - | |
| 4 | May 18, 2026 | - | - | |
| 4 | May 18, 2026 | - | - | |
| 8-K | May 15, 2026 | - | Analysis | |
| SC 13G | Apr 29, 2026 | - | - | |
| 4 | Apr 28, 2026 | - | - | - |
| 10-Q | Apr 22, 2026 | Mar 28, 2026 | Analysis | |
| 8-K | Apr 21, 2026 | - | Analysis | - |
| 8-K | Apr 21, 2026 | - | Analysis | - |
| 4 | Apr 10, 2026 | - | - | - |
| 4 | Mar 31, 2026 | - | - | - |
| 4 | Feb 26, 2026 | - | - | - |
| 10-K | Feb 20, 2026 | Dec 31, 2025 | Analysis | |
| 4 | Feb 17, 2026 | - | - |
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CALX SEC filings: frequently asked questions
Are CALX insiders buying or selling?
In the last 90 days, CALIX, INC (CALX) officers, directors and 10% owners reported no open-market purchases and 1 open-market sale worth $2.7 million by 1 insider on Form 4. Many insider sales are pre-planned or for taxes, so purchases usually carry more information.
Which institutions hold CALX stock?
As of June 30, 2026, the largest CALIX, INC (CALX) holders among the 13F filers tracked by SignalX were BlackRock ($439.5 million), Vanguard Portfolio Management LLC ($208.5 million), State Street Corp ($108.8 million), Vanguard Capital Management LLC ($96.6 million), Dimensional Fund Advisors ($48.9 million). 13F-HR reports are filed up to 45 days after each quarter ends.
What was CALX's revenue in fiscal year 2025?
For the fiscal year ended December 31, 2025 (FY2025), CALIX, INC (CALX) reported revenue of $1.0 billion (up 20.3% from FY2024) and net income of $17.9 million. Diluted EPS was $0.26. The figures come from the XBRL data in the 10-K.
What are the main risks in CALX's latest 10-K?
In the 10-K filed February 20, 2026, CALIX, INC (CALX) flagged: Regulatory/legal risk: AI and Cybersecurity Committee oversight newly expanded in 2025 to include AI risk management under Board governance. Operational risk: Key-person dependency on Chief Operating Officer and Chief Product Officer for managing cybersecurity and AI risks. (AI summary of the Risk Factors section.)
What did CALX report in its latest 8-K?
CALIX, INC (CALX) filed an 8-K on July 20, 2026 reporting Item 2.02 (Results of Operations and Financial Condition). Calix reported financial results for Q2 ended June 27, 2026, via stockholder letter.
What are the latest CALX SEC filings?
CALIX, INC (CALX) filed its latest 10-K annual report on February 20, 2026, a 10-Q quarterly report on July 21, 2026, an 8-K current report on July 20, 2026 and a Form 4 insider filing on September 29, 2026.
What is CALX's SEC CIK number?
CALIX, INC (CALX)'s SEC Central Index Key (CIK) is 1406666. EDGAR lists every CALX filing under that number.
Ask anything about CALX
The research agent reads CALX's filings, financials, insider trades and 13F holders, then answers with sources.