Michael Weening - Oct 30, 2025 Form 4 Insider Report for CALIX, INC ((CALX))

Role
President & CEO, Director
Signature
/s/ Tom Gemetti as Attorney-in-Fact for Michael Weening
Stock symbol
(CALX)
Transactions as of
Oct 30, 2025
Transactions value $
-$15,912,422
Form type
4
Date filed
11/3/2025, 07:11 PM
Previous filing
Sep 11, 2025
SEC
View on sec.gov

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 2025-11-03 0001678385

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction (CALX) Common Stock Options Exercise $1.57M +200K +1240.93% $7.84 216K Oct 30, 2025 Direct
transaction (CALX) Common Stock Sale -$9.69M -150K -69.41% $64.63 66.1K Oct 30, 2025 Direct F1
transaction (CALX) Common Stock Sale -$3.38M -50K -75.62% $67.55 16.1K Oct 30, 2025 Direct F2
transaction (CALX) Common Stock Options Exercise $580K +74K +459.14% $7.84 90.1K Nov 3, 2025 Direct
transaction (CALX) Common Stock Sale -$4.99M -74K -82.12% $67.42 16.1K Nov 3, 2025 Direct F3

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 -200K -72.99% $0.00 74K Oct 30, 2025 Common Stock 200K $7.84 Direct F4
transaction (CALX) Stock Option (right to buy) Options Exercise $0 -74K -100% $0.00 0 Nov 3, 2025 Common Stock 74K $7.84 Direct F4
* 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 The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $64.55 to $65.00, inclusive. Full information on the number of shares sold at each sale price is available upon request.
F2 The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $67.35 to $67.93, inclusive. Full information on the number of shares sold at each sale price is available upon request.
F3 The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $66.245 to $69.450, inclusive. Full information on the number of shares sold at each sale price is available upon request.
F4 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.