[144] CALIX, INC SEC Filing

Rhea-AI Filing Summary

Calix, Inc. (CALX) filed a Form 144 indicating that Cory J Sindelar plans to sell 10,000 shares of common stock with an aggregate market value of $700,000. The proposed sale is listed for 10/31/2025 on the NYSE through Morgan Stanley Smith Barney LLC.

The filing notes the shares were acquired via a stock option exercise on 10/31/2025 with cash payment. Recent activity disclosed includes sales by the same seller of 10,000 shares for $650,000 on 10/30/2025 and 10,000 shares for $600,000 on 08/28/2025.

Insights

Equity Capital Markets Analyst

Administrative notice of a potential insider sale; neutral impact.

This Form 144 lists a proposed sale of 10,000 CALX shares with an aggregate market value of $700,000, to be executed on 10/31/2025 via Morgan Stanley Smith Barney LLC on the NYSE. The seller, Cory J Sindelar, acquired the shares through a same‑day stock option exercise paid in cash.

Form 144 is a notice that permits sales under Rule 144; it does not guarantee execution or timing beyond what’s stated. The filing also discloses prior sales of 10,000 shares for $650,000 on 10/30/2025 and 10,000 shares for $600,000 on 08/28/2025. Actual market impact depends on execution under Rule 144 conditions.

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.

Relationship to Issuer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	10000	700000.00	66276473	10/31/2025	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	10/31/2025	Stock Option Exercise	ISSUER			10000	10/31/2025	Cash

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
CORY J SINDELAR 3155 Olsen Drive, Suite 450 SAN JOSE CA 95117	Common	10/30/2025	10000	650000.00
CORY J SINDELAR 3155 Olsen Drive, Suite 450 SAN JOSE CA 95117	Common	08/28/2025	10000	600000.00

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

ATTENTION:

The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.

Signature

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What did Calix (CALX) disclose in this Form 144?

A proposed sale of 10,000 common shares with an aggregate market value of $700,000 planned for 10/31/2025 on the NYSE.

Who is the seller in the CALX Form 144?

The seller is Cory J Sindelar, as named in the filing.

How were the 10,000 shares acquired?

Via a stock option exercise on 10/31/2025, with cash payment.

Which broker is listed for the proposed sale?

Morgan Stanley Smith Barney LLC, Executive Financial Services, New York.

What prior sales were reported in the last 3 months?

10,000 shares for $650,000 on 10/30/2025 and 10,000 shares for $600,000 on 08/28/2025.

On which exchange is the sale listed?

The proposed sale is listed for the NYSE.