Michael Weening - 04 Sep 2025 Form 4 Insider Report for CALIX, INC (CALX)

Signature
/s/ Tom Gemetti as Attorney-in-Fact for Michael Weening
Issuer symbol
CALX
Transactions as of
04 Sep 2025
Net transactions value
-$1,251,840
Form type
4
Filing time
08 Sep 2025, 16:08:44 UTC
Previous filing
02 Sep 2025
Next filing
11 Sep 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 08 Sep 2025 0001678385

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction (CALX) Common Stock Options Exercise $188,160 +24,000 +149% $7.84 40,117 04 Sep 2025 Direct
transaction (CALX) Common Stock Sale $1,440,000 -24,000 -60% $60.00 16,117 04 Sep 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 -24,000 -5.1% $0.000000 450,000 04 Sep 2025 Common Stock 24,000 $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.