Michael Weening - Jul 22, 2025 Form 4 Insider Report for CALIX, INC ((CALX))

Signature
/s/ Tom Gemetti as Attorney-in-Fact for Michael Weening
Stock symbol
(CALX)
Transactions as of
Jul 22, 2025
Transactions value $
-$9,900,720
Form type
4
Date filed
7/24/2025, 06:42 PM
Previous filing
Jun 3, 2025
Next filing
Aug 5, 2025

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Weening Michael President & CEO, Director C/O CALIX, INC., 2777 ORCHARD PARKWAY, SAN JOSE /s/ Tom Gemetti as Attorney-in-Fact for Michael Weening 2025-07-24 0001678385

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction (CALX) Common Stock Options Exercise $547K +92K +581.84% $5.95 108K Jul 22, 2025 Direct
transaction (CALX) Common Stock Sale -$5.06M -92K -85.33% $55.00 15.8K Jul 22, 2025 Direct
transaction (CALX) Common Stock Options Exercise $547K +92K +581.84% $5.95 108K Jul 23, 2025 Direct
transaction (CALX) Common Stock Sale -$5.15M -92K -85.33% $56.00 15.8K Jul 23, 2025 Direct
transaction (CALX) Common Stock Options Exercise $128K +16K +101.19% $8.03 31.8K Jul 23, 2025 Direct
transaction (CALX) Common Stock Sale -$912K -16K -50.3% $57.00 15.8K Jul 23, 2025 Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction (CALX) Stock Option (right to buy) Options Exercise $0 -92K -50% $0.00 92K Jul 22, 2025 Common Stock 92K $5.95 Direct F1
transaction (CALX) Stock Option (right to buy) Options Exercise $0 -92K -100% $0.00 0 Jul 23, 2025 Common Stock 92K $5.95 Direct F1
transaction (CALX) Stock Option (right to buy) Options Exercise $0 -16K -17.78% $0.00 74K Jul 23, 2025 Common Stock 16K $8.03 Direct F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Explanation of Responses:

Id Content
F1 100% of the shares subject to the option were fully vested and exercisable on January 1, 2021.
F2 100% of the shares subject to the option were fully vested and exercisable on February 14, 2023.

Remarks:

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