Calix director receives 4,967 RSU equity grant

CRUSCO KATHLEEN M reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

CRUSCO KATHLEEN M reported acquisition or exercise transactions in this Form 4 filing.

Calix, Inc. director Kathleen M. Crusco received an equity award of 4,967 restricted stock units (RSUs). The RSUs were granted at no cash cost to her under the company’s non-employee director equity compensation policy and will vest in full one day before Calix’s next annual stockholder meeting.

Each RSU represents a right to receive one share of Calix common stock upon vesting. After this grant, Crusco beneficially owns 64,361 shares of Calix common stock, which includes the 4,967 unvested RSUs from this award.

Insider Trade Summary

Grant/Award: 4,967 shares

Grant/Award 1 txn

Insider CRUSCO KATHLEEN M

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	4,967	$0.00	$0.00

Holdings After Transaction: Common Stock — 64,361 shares (Direct)

Footnotes (2)

1. F1. Represents a grant of restricted stock units ("RSUs") awarded pursuant to the issuer's non-employee director equity compensation policy, that will vest in full one day prior to the issuer's next annual stockholder meeting. Each RSU represents a contingent right to receive one share of the issuer's common stock.
2. F2. Amount of securities beneficially owned includes 4,967 unvested RSUs.

Key Figures

RSUs granted: 4,967 units Transaction price per unit: $0.00 Shares beneficially owned after grant: 64,361 shares +1 more

4 metrics

RSUs granted 4,967 units Restricted stock units awarded to director on May 14, 2026

Transaction price per unit $0.00 Grant of RSUs under non-employee director equity compensation policy

Shares beneficially owned after grant 64,361 shares Total Calix common stock beneficially owned following RSU award

Unvested RSUs included in ownership 4,967 units Unvested RSUs counted within beneficial ownership total

Key Terms

restricted stock units, non-employee director equity compensation policy, beneficially owned

3 terms

restricted stock units financial

"Represents a grant of restricted stock units ("RSUs") awarded pursuant to the issuer's non-employee director equity compensation policy"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

non-employee director equity compensation policy financial

"RSUs awarded pursuant to the issuer's non-employee director equity compensation policy, that will vest in full one day prior"

beneficially owned financial

"Amount of securities beneficially owned includes 4,967 unvested RSUs"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did Calix (CALX) director Kathleen Crusco report in this Form 4?

Kathleen M. Crusco reported receiving a grant of 4,967 restricted stock units (RSUs) of Calix common stock. The award is part of the non-employee director equity compensation policy and was granted at no cash purchase price to the director.

How many Calix (CALX) shares does Kathleen Crusco own after this RSU grant?

Following the grant, Kathleen M. Crusco beneficially owns 64,361 Calix common shares. This total includes 4,967 unvested restricted stock units that will convert into common shares when they vest according to the director equity compensation terms.

When do Kathleen Crusco’s newly granted Calix (CALX) RSUs vest?

The 4,967 restricted stock units granted to Kathleen M. Crusco vest in full one day before Calix’s next annual stockholder meeting. At vesting, each RSU converts into one share of Calix common stock, increasing her directly held share count.

What is the price paid for the Calix (CALX) RSUs granted to Kathleen Crusco?

The reported transaction price per share for Kathleen M. Crusco’s 4,967 Calix restricted stock units is $0.00. This reflects that the units are a compensatory equity grant under the non-employee director equity compensation policy, not an open-market purchase.

What does each Calix (CALX) restricted stock unit represent in this Form 4?

Each restricted stock unit granted to Kathleen M. Crusco represents a contingent right to receive one share of Calix common stock. The RSUs convert into shares only upon satisfying the vesting condition tied to the timing of the next annual stockholder meeting.

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

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Accepted by SEC EDGAR 05/18/2026 - 05:57 PM EDT Learn about SEC filing dates

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).

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^*

CRUSCO KATHLEEN M

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/14/2026

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	05/14/2026		A		4,967(1)	A	$0	64,361(2)	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. Represents a grant of restricted stock units ("RSUs") awarded pursuant to the issuer's non-employee director equity compensation policy, that will vest in full one day prior to the issuer's next annual stockholder meeting. Each RSU represents a contingent right to receive one share of the issuer's common stock.

2. Amount of securities beneficially owned includes 4,967 unvested RSUs.

Remarks:

	/s/ Tom Gemetti as Attorney-in-Fact for Kathleen M. Crusco	05/18/2026
	** 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)