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CALX CALIX, INC

Last updated: Mar 17, 2026

Execution Consistency

Did the company actually spend money buying back stock in 3+ of the last 4 quarters?

Bought back stock in 2/4 quarters. Q3 2025: $0M, Q2 2025: $0M, Q1 2025: $4M, Q3 2024: $32M

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Execution Acceleration

Is the most recent quarter's buyback spend more than 15% above the trailing average?

Latest quarter $0M vs trailing avg $12M (-100%)

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Buyback vs FCF

What percentage of free cash flow is going to buybacks? Bull: 30-80%. Bear: <10% or >80%.

Buyback $36M / FCF $28M = 130% of FCF

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Buyback Intensity

How fast are they shrinking the float? Bull: 2%+ annually. Bear: under 0.5%.

Repurchased 5,700,000 shares = 8.6% of 66,434,000 outstanding (annualized)

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Insider Buying

Are officers and directors buying stock with their own money on the open market?

15 open-market purchases by 3 insiders

  • Weening Michael (President & CEO) bought 341 shares at $34.98 on 2023-08-14
  • LISTWIN DONALD J () bought 10,000 shares at $50.94 on 2022-02-04
  • LISTWIN DONALD J () bought 23 shares at $74.36 on 2021-11-04
  • LISTWIN DONALD J () bought 15,000 shares at $60.00 on 2021-10-28
  • Weening Michael (President & COO) bought 337 shares at $31.28 on 2021-08-14
  • LISTWIN DONALD J () bought 20,000 shares at $35.75 on 2021-02-09
  • LISTWIN DONALD J () bought 20,000 shares at $22.53 on 2020-11-10
  • SINDELAR CORY (Chief Financial Officer) bought 5,000 shares at $19.75 on 2020-08-31
  • LISTWIN DONALD J () bought 21,936 shares at $20.40 on 2020-08-26
  • LISTWIN DONALD J () bought 5,109 shares at $19.82 on 2020-08-25

Insider-Buyback Convergence

Are insider purchases happening during the same quarters the company is actively buying back stock?

Insider buying coincided with company buybacks in 1 of 4 quarters

  • Q3 2024: Weening Michael bought while company spent $32M
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Insider Net Direction

Looking at all open-market transactions, are insiders net buyers or net sellers?

Insiders bought $5M, sold $193M (net selling)

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Red Flag

Active buyback + insiders net selling 3x+ more than buying. Company cash may be supporting price while insiders exit.

Company buying back stock while insiders sold 42.0x more than bought. 4 C-suite officers among sellers

  • Eleniak Shane Todd Marshall (Chief Product Officer) sold 24,000 shares on 2025-11-10
  • SINDELAR CORY (Chief Financial Officer) sold 50,000 shares on 2025-11-06
  • Eleniak Shane Todd Marshall (Chief Product Officer) sold 50,000 shares on 2025-11-04
  • Weening Michael (President & CEO) sold 150,000 shares on 2025-10-30
  • Weening Michael (President & CEO) sold 50,000 shares on 2025-10-30
  • Weening Michael (President & CEO) sold 74,000 shares on 2025-11-03
  • SINDELAR CORY (Chief Financial Officer) sold 10,000 shares on 2025-10-30
  • SINDELAR CORY (Chief Financial Officer) sold 10,000 shares on 2025-10-31
  • Weening Michael (President & CEO) sold 150,000 shares on 2025-09-10
  • Weening Michael (President & CEO) sold 7,990 shares on 2025-09-10