Calix (NYSE: CALX) director receives 4,967 restricted stock units as equity grant

Rhea-AI Filing Summary

CALIX, INC director Rajatish Mukherjee received a grant of 4,967 restricted stock units of common stock. The award was made as part of the company’s non-employee director equity compensation policy and carries a grant price of $0.00 per share.

The RSUs will vest in full one day before Calix’s next annual stockholder meeting, at which point each unit will convert into one share of common stock. After this grant, Mukherjee beneficially owns 9,656 shares of Calix common stock, including the 4,967 unvested RSUs.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Mukherjee Rajatish

Role null

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

Holdings After Transaction: Common Stock — 9,656 shares (Direct, null)

Footnotes (1)

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

Key Figures

RSUs granted: 4,967 RSUs Grant price: $0.00 per share Shares beneficially owned: 9,656 shares

3 metrics

RSUs granted 4,967 RSUs Restricted stock units granted on 2026-05-14

Grant price $0.00 per share RSU award under non-employee director policy

Shares beneficially owned 9,656 shares Total Calix common stock after RSU grant, including 4,967 unvested RSUs

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 to the issuer's next annual stockholder meeting"

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.

Form 4 Insider Transactions: What Each Field Means →

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^*

Mukherjee Rajatish

(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	9,656(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 Rajatish Mukherjee	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)

FAQ

What insider transaction did CALX director Rajatish Mukherjee report?

Rajatish Mukherjee reported receiving a grant of 4,967 restricted stock units of Calix common stock. The grant is part of the company’s non-employee director equity compensation policy and was recorded at a grant price of $0.00 per share.

When do Rajatish Mukherjee’s new CALX RSUs vest?

The 4,967 restricted stock units granted to Rajatish Mukherjee will vest in full one day before Calix’s next annual stockholder meeting. Upon vesting, each RSU converts into one share of Calix common stock, increasing his directly held shares.

How many CALX shares does Rajatish Mukherjee beneficially own after this grant?

After the RSU grant, Rajatish Mukherjee beneficially owns 9,656 shares of Calix common stock. This total includes the 4,967 unvested restricted stock units, each representing a contingent right to receive one share upon vesting.

What is the nature of the CALX equity grant to Rajatish Mukherjee?

The transaction is a grant of restricted stock units under Calix’s non-employee director equity compensation policy, not an open-market purchase. It reflects compensation in equity form, with the units converting into common shares when they vest before the next annual meeting.

Does the CALX RSU grant to Rajatish Mukherjee involve any cash payment?

The grant was recorded at a transaction price of $0.00 per share, so Mukherjee did not pay cash for the 4,967 restricted stock units. The award represents stock-based compensation provided by Calix to a non-employee director.