Michael Weening - 10 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
10 Sep 2025
Net transactions value
-$9,558,160
Form type
4
Filing time
11 Sep 2025, 18:33:00 UTC
Previous filing
08 Sep 2025
Next filing
03 Nov 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 11 Sep 2025 0001678385

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction (CALX) Common Stock Options Exercise $1,176,000 +150,000 +931% $7.84 166,117 10 Sep 2025 Direct
transaction (CALX) Common Stock Sale $9,300,000 -150,000 -90% $62.00 16,117 10 Sep 2025 Direct
transaction (CALX) Common Stock Options Exercise $62,642 +7,990 +50% $7.84 24,107 10 Sep 2025 Direct
transaction (CALX) Common Stock Sale $503,370 -7,990 -33% $63.00 16,117 10 Sep 2025 Direct
transaction (CALX) Common Stock Options Exercise $141,198 +18,010 +112% $7.84 34,127 11 Sep 2025 Direct
transaction (CALX) Common Stock Sale $1,134,630 -18,010 -53% $63.00 16,117 11 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 -150,000 -33% $0.000000 300,000 10 Sep 2025 Common Stock 150,000 $7.84 Direct F1
transaction (CALX) Stock Option (right to buy) Options Exercise $0 -7,990 -2.7% $0.000000 292,010 10 Sep 2025 Common Stock 7,990 $7.84 Direct F1
transaction (CALX) Stock Option (right to buy) Options Exercise $0 -18,010 -6.2% $0.000000 274,000 11 Sep 2025 Common Stock 18,010 $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.