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

Role
President & CEO, Director
Signature
/s/ Tom Gemetti as Attorney-in-Fact for Michael Weening
Issuer symbol
CALX
Transactions as of
30 Oct 2025
Net transactions value
-$15,912,422
Form type
4
Filing time
03 Nov 2025, 19:11:36 UTC
Previous filing
11 Sep 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 03 Nov 2025 0001678385

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction (CALX) Common Stock Options Exercise $1,568,000 +200,000 +1241% $7.84 216,117 30 Oct 2025 Direct
transaction (CALX) Common Stock Sale $9,694,200 -150,000 -69% $64.63 66,117 30 Oct 2025 Direct F1
transaction (CALX) Common Stock Sale $3,377,280 -50,000 -76% $67.55 16,117 30 Oct 2025 Direct F2
transaction (CALX) Common Stock Options Exercise $580,160 +74,000 +459% $7.84 90,117 03 Nov 2025 Direct
transaction (CALX) Common Stock Sale $4,989,102 -74,000 -82% $67.42 16,117 03 Nov 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 -200,000 -73% $0.000000 74,000 30 Oct 2025 Common Stock 200,000 $7.84 Direct F4
transaction (CALX) Stock Option (right to buy) Options Exercise $0 -74,000 -100% $0.000000 0 03 Nov 2025 Common Stock 74,000 $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.