Calix, Inc. (CALX) director Russo sells 75K shares under 10b5-1 plan

Rhea-AI Filing Summary

Calix, Inc. director and more-than-10% owner Carl Russo reported the sale of 75,000 shares of Common Stock on July 27, 2026, at a weighted average price of $36.1974 per share, in multiple trades between $35.795 and $36.74.

The shares were sold indirectly by The Crescentico Trust, for which Russo serves as trustee, under a Rule 10b5-1 trading plan adopted on April 23, 2026. Russo continues to hold 3,958,037 shares directly.

Insider Trade Summary 10b5-1

Net Seller: 75,000 shares

Net Sell 3 txns

Insider Russo Carl

Role Director, 10% Owner

Sold 75,000 shs ($2.71M)

Type	Security	Shares	Price	Value
Sale	Common Stock F1, F2	75,000	$36.1974	$2.71M
holding	Common Stock F3	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 1,582,970 shares (Indirect, See Footnote); Common Stock — 3,958,037 shares (Direct)

Footnotes (3)

1. F1. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $35.795 to $36.74, inclusive. Full information on the number of shares sold at each sale price is available upon request.
2. F2. Shares held by The Crescentico Trust, Carl Russo, Trustee.
3. F3. Shares held by Equanimous Investments. The managing members of Equanimous Investments are Carl Russo and Tim Pasquinelli. These individuals may be deemed to have shared voting and investment power over the shares held by Equanimous Investments. Each of these individuals disclaims beneficial ownership of such shares, except to the extent of his pecuniary interest therein.

Key Figures

Shares sold: 75,000 shares Weighted average sale price: $36.1974 per share Sale price range: $35.795–$36.74 per share +2 more

5 metrics

Shares sold 75,000 shares Common Stock sale on 2026-07-27

Weighted average sale price $36.1974 per share Common Stock sale on 2026-07-27

Sale price range $35.795–$36.74 per share Multiple sale transactions on 2026-07-27

Net shares sold 75,000 shares NetBuySellShares from transaction summary

Direct holdings after transactions 3,958,037 shares Directly owned Common Stock position as of 2026-07-27

Key Terms

Rule 10b5-1 trading plan, weighted average sale price, voting and investment power, beneficial ownership, +1 more

5 terms

Rule 10b5-1 trading plan financial

"Sales reported were effected pursuant to a Rule 10b5-1 trading plan"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

weighted average sale price financial

"The price reported in Column 4 is a weighted average sale price"

voting and investment power financial

"may be deemed to have shared voting and investment power over the shares"

beneficial ownership financial

"Each of these individuals disclaims beneficial ownership of such shares"

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

pecuniary interest financial

"except to the extent of his pecuniary interest therein"

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 07/28/2026 - 04:14 PM Accepted by SEC EDGAR 07/28/2026 - 04:13 PM Learn about SEC filing dates

FAQ

How many Calix (CALX) shares did Carl Russo sell in this insider transaction?

Carl Russo reported selling 75,000 shares of Calix Common Stock on July 27, 2026. The sale was executed in multiple trades and disclosed as part of his insider ownership reporting for the company.

What price did Carl Russo receive per Calix (CALX) share in the reported sale?

The reported weighted average sale price was $36.1974 per share, with individual trades ranging from $35.795 to $36.74. The filing notes that detailed trade-by-trade pricing is available upon request.

Were Carl Russo’s Calix (CALX) share sales made under a Rule 10b5-1 plan?

Yes. The sales were effected under a Rule 10b5-1 trading plan adopted on April 23, 2026. Such plans pre-schedule trades, which can reduce the significance of transaction timing as an indicator of insider sentiment.

How many Calix (CALX) shares does Carl Russo still own directly after this sale?

After the reported transactions, Carl Russo continues to hold 3,958,037 Calix Common Stock shares directly. This direct position is separate from shares held indirectly through entities such as trusts or investment vehicles.

Were the sold Calix (CALX) shares held directly by Carl Russo or through an entity?

The 75,000 sold shares were held indirectly by The Crescentico Trust, for which Carl Russo serves as trustee. The filing classifies this as indirect ownership, distinct from his directly held Calix shares.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

X

Check this box to indicate that a 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). See Instruction 10.

1. Name and Address of Reporting Person^*

Russo Carl

(Last) (First) (Middle)

C/O CALIX, INC.

3155 OLSEN DRIVE, SUITE 450

(Street)

SAN JOSE CALIFORNIA 95117

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
CALIX, INC [ (CALX) ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
07/27/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	07/27/2026		S		75,000	D	$36.1974(1)	1,569,188	I	See Footnote(2)
Common Stock								13,782	I	See Footnote(3)
Common Stock								3,958,037	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $35.795 to $36.74, inclusive. Full information on the number of shares sold at each sale price is available upon request.

2. Shares held by The Crescentico Trust, Carl Russo, Trustee.

3. Shares held by Equanimous Investments. The managing members of Equanimous Investments are Carl Russo and Tim Pasquinelli. These individuals may be deemed to have shared voting and investment power over the shares held by Equanimous Investments. Each of these individuals disclaims beneficial ownership of such shares, except to the extent of his pecuniary interest therein.

Remarks:

Sales reported on the Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on April 23, 2026.

	/s/ Tom Gemetti as Attorney-in-Fact for Carl Russo	07/28/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)