CORY SINDELAR - 28 Aug 2025 Form 4 Insider Report for CALIX, INC (CALX)

Signature
/s/ Tom Gemetti as Attorney-in-Fact for Cory Sindelar
Issuer symbol
CALX
Transactions as of
28 Aug 2025
Net transactions value
-$549,500
Form type
4
Filing time
29 Aug 2025, 16:57:09 UTC
Previous filing
15 Aug 2025
Next filing
03 Nov 2025

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
SINDELAR CORY Chief Financial Officer C/O CALIX, INC., 2777 ORCHARD PARKWAY, SAN JOSE /s/ Tom Gemetti as Attorney-in-Fact for Cory Sindelar 29 Aug 2025 0001226868

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction (CALX) Common Stock Options Exercise $50,500 +10,000 +13% $5.05 86,555 28 Aug 2025 Direct
transaction (CALX) Common Stock Sale $600,000 -10,000 -12% $60.00 76,555 28 Aug 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 -10,000 -3.9% $0.000000 245,000 28 Aug 2025 Common Stock 10,000 $5.05 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 October 1, 2021.

Remarks:

Sales reported on the Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on February 7, 2025.