Michael Weening - Sep 10, 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
Sep 10, 2025
Transactions value $
-$9,558,160
Form type
4
Date filed
9/11/2025, 06:33 PM
Previous filing
Sep 8, 2025
Next filing
Nov 3, 2025

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Weening Michael President & CEO, Director C/O CALIX, INC., 3155 OLSEN DRIVE, SUITE 450, SAN JOSE /s/ Tom Gemetti as Attorney-in-Fact for Michael Weening 2025-09-11 0001678385

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction (CALX) Common Stock Options Exercise $1.18M +150K +930.69% $7.84 166K Sep 10, 2025 Direct
transaction (CALX) Common Stock Sale -$9.3M -150K -90.3% $62.00 16.1K Sep 10, 2025 Direct
transaction (CALX) Common Stock Options Exercise $62.6K +7.99K +49.57% $7.84 24.1K Sep 10, 2025 Direct
transaction (CALX) Common Stock Sale -$503K -7.99K -33.14% $63.00 16.1K Sep 10, 2025 Direct
transaction (CALX) Common Stock Options Exercise $141K +18K +111.75% $7.84 34.1K Sep 11, 2025 Direct
transaction (CALX) Common Stock Sale -$1.13M -18K -52.77% $63.00 16.1K Sep 11, 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 -150K -33.33% $0.00 300K Sep 10, 2025 Common Stock 150K $7.84 Direct F1
transaction (CALX) Stock Option (right to buy) Options Exercise $0 -7.99K -2.66% $0.00 292K Sep 10, 2025 Common Stock 7.99K $7.84 Direct F1
transaction (CALX) Stock Option (right to buy) Options Exercise $0 -18K -6.17% $0.00 274K Sep 11, 2025 Common Stock 18K $7.84 Direct F1
* 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 November 27, 2023.

Remarks:

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