[144] CALIX, INC. SEC Filing

Rhea-AI Filing Summary

Calix, Inc. (CALX) insider filing reports a proposed sale of 126,000 common shares through Morgan Stanley Smith Barney LLC on the NYSE, with an aggregate market value of $7,560,000.00 and 65,303,995 shares outstanding. The shares were acquired on 08/28/2025 by stock option exercise from the issuer and payment was made in cash.

The filing identifies prior open-market sales by Michael Weening totaling four transactions in the past three months (100,000 on 06/02/2025 for $4,658,710.00; 92,000 on 07/22/2025 for $5,060,000.00; 108,000 on 07/23/2025 for $6,064,000.00; and 74,000 on 08/04/2025 for $4,218,000.00). The filer certifies no undisclosed material information and the notice follows Rule 144 disclosure requirements.

Positive

• Proposed sale fully disclosed with broker, amounts, acquisition method, and payment method specified
• Acquisition was via stock option exercise and payment was made in cash, both explicitly stated

Negative

• Multiple recent insider sales by Michael Weening in the prior three months are disclosed, indicating ongoing disposition activity
• Proposed sale size ($7.56M) is material relative to individual recent transactions and may be viewed negatively by some investors

Insights

Securities Compliance Analyst

TL;DR: Notice documents a routine Rule 144 sale following option exercise, with multiple recent insider dispositions disclosed.

The filing is straightforward: a proposed sale of 126,000 shares acquired by stock option exercise and paid in cash, to be executed through Morgan Stanley Smith Barney LLC. The filer discloses four prior sales by Michael Weening within three months, which may be aggregated for Rule 144 calculations. The representation that no material nonpublic information exists is included as required. From a compliance standpoint, the form contains the necessary elements: acquisition date, nature of acquisition, broker details, amounts, and past sales history.

Equity Markets Analyst

TL;DR: Insider is monetizing equity after option exercise; recent sales are sizable relative to single-sale value.

The proposed 126,000-share sale has an indicated market value of $7.56 million, comparable in scale to recent individual sales listed in the filing. The shares were exercised and paid in cash the same day, suggesting a standard liquidity event rather than an off-market transfer. The disclosure of four recent transactions offers transparency about insider selling activity over the prior three months, which investors often monitor for signaling but does not by itself indicate undisclosed information.

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

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	126000	7560000.00	65303995	08/28/2025	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	08/28/2025	Stock Option Exercise	ISSUER			126000	08/28/2025	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
MICHAEL WEENING 2777 ORCHARD PARKWAY SAN JOSE CA 95134	Common	08/04/2025	74000	4218000.00
MICHAEL WEENING 2777 ORCHARD PARKWAY SAN JOSE CA 95134	Common	07/23/2025	108000	6064000.00
MICHAEL WEENING 2777 ORCHARD PARKWAY SAN JOSE CA 95134	Common	07/22/2025	92000	5060000.00
MICHAEL WEENING 2777 ORCHARD PARKWAY SAN JOSE CA 95134	Common	06/02/2025	100000	4658710.00

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 insider sale does CALX Form 144 disclose?

The filing discloses a proposed sale of 126,000 common shares on 08/28/2025 through Morgan Stanley Smith Barney LLC with an aggregate market value of $7,560,000.00.

How were the 126,000 CALX shares acquired?

The shares were acquired on 08/28/2025 by stock option exercise from the issuer, with payment made in cash.

Who has sold CALX shares in the past three months according to the filing?

The filing lists sales by Michael Weening: 100,000 on 06/02/2025 for $4,658,710.00; 92,000 on 07/22/2025 for $5,060,000.00; 108,000 on 07/23/2025 for $6,064,000.00; and 74,000 on 08/04/2025 for $4,218,000.00.

On which exchange will the proposed CALX sale occur?

The proposed sale is listed to take place on the NYSE.

Does the filer state there is undisclosed material information?

By signing the notice, the person for whose account the securities are to be sold represents they do not know any material adverse information about the issuer that has not been publicly disclosed.