Michael Weening - 28 Aug 2025 Form 4 Insider Report for CALIX, INC (CALX)

Reporting relationship: President & CEO, Director
Issuer ticker: CALX
Reported as of: 28 Aug 2025
Net transaction value: -$6,572,160
SEC form: 4
Accepted by SEC: 02 Sep 2025, 17:05:39 UTC
Prior SEC filing: 15 Aug 2025
Next SEC filing: 08 Sep 2025
Source filing: View source filing
Reporting owner signature: /s/ Tom Gemetti as Attorney-in-Fact for Michael Weening

Key filing fact

Michael Weening filed Form 4 for CALIX, INC (CALX) on 02 Sep 2025.

Key facts

This page summarizes Michael Weening's Form 4 filing for CALIX, INC (CALX).
3 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 02 Sep 2025, 17:05.

Change

Previous filing in this sequence was filed on 15 Aug 2025.
Current net transaction value: -$6,572,160.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001678385 Primary reporting owner

Weening Michael

Relationship: President & CEO, Director
Address: C/O CALIX, INC., 2777 ORCHARD PARKWAY, SAN JOSE
Signature: /s/ Tom Gemetti as Attorney-in-Fact for Michael Weening
Signature date: 02 Sep 2025

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

(CALX) transaction

Common Stock

Options Exercise

Transaction value: $987,840
Shares: +126,000
Change %: +782%
Price: $7.84
Shares after: 142,117
Date: 28 Aug 2025
Ownership: Direct

(CALX) transaction

Common Stock

Sale

Transaction value: $7,560,000
Shares: -126,000
Change %: -89%
Price: $60.00
Shares after: 16,117
Date: 28 Aug 2025
Ownership: Direct

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

(CALX) transaction Derivative

Stock Option (right to buy)

Options Exercise

Transaction value: $0
Shares: -126,000
Change %: -21%
Price: $0.000000
Shares after: 474,000
Date: 28 Aug 2025
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 126,000
Exercise price: $7.84
Footnotes: F1

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 1 footnote

Footnote F1

100% of the shares subject to the option were fully vested and exercisable on November 27, 2023.

SEC remarks

Sales reported on the Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on February 28, 2025.