Calix (CALX) director Wade Oosterman receives 4,967 RSUs as equity grant

Rhea-AI Filing Summary

Oosterman Wade reported acquisition or exercise transactions in this Form 4 filing.

Calix, Inc. director Wade Oosterman received a grant of 4,967 restricted stock units as part of the company’s non-employee director equity compensation policy. The RSUs vest in full one day prior to Calix’s next annual stockholder meeting, with each unit delivering one share of common stock upon vesting.

Following this award, Oosterman is reported as beneficially owning 12,156 shares of Calix common stock, which includes the 4,967 unvested RSUs. This is a compensation-related equity grant rather than an open-market purchase or sale.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Oosterman Wade

Role null

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

Holdings After Transaction: Common Stock — 12,156 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 units Grant price: $0.0000 per share Total shares after grant: 12,156 shares +2 more

5 metrics

RSUs granted 4,967 units Restricted stock units awarded to director

Grant price $0.0000 per share Compensation grant, no cash paid

Total shares after grant 12,156 shares Beneficial ownership following transaction

Transaction date 2026-05-14 Date of RSU grant

Transaction code A Grant, award, or other acquisition

Key Terms

restricted stock units ("RSUs"), non-employee director equity compensation policy, beneficially owned, contingent right

4 terms

restricted stock units ("RSUs") financial

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

Restricted stock units (RSUs) are a company promise to give an employee shares of stock (or cash equivalent) in the future, but only after certain conditions—usually staying with the company for a set time or hitting performance goals—are met. Investors watch RSUs because when they vest they increase the number of shares outstanding and can lead insiders to sell shares, affecting share price, company dilution and the true cost of employee pay.

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.

contingent right financial

"Each RSU represents a contingent right to receive one share of the issuer's common stock"

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^*

Oosterman Wade

(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	12,156(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 Wade Oosterman	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 did Calix (CALX) director Wade Oosterman report in this Form 4?

Wade Oosterman reported receiving 4,967 restricted stock units from Calix as a compensation grant. These RSUs are part of the non-employee director equity plan and increase his total reported beneficial ownership to 12,156 shares, including the unvested units.

Is Wade Oosterman buying or selling Calix (CALX) stock in this Form 4?

The filing shows an acquisition through a grant, not a market trade. Oosterman received 4,967 restricted stock units at no cash cost as director compensation, so there is no open-market buying or selling activity disclosed in this Form 4.

How many Calix (CALX) shares does Wade Oosterman own after this RSU grant?

After the grant, Oosterman is reported as beneficially owning 12,156 Calix common shares. This figure includes 4,967 unvested restricted stock units, each representing a contingent right to receive one share of common stock upon vesting.

When will Wade Oosterman’s new Calix (CALX) RSUs vest?

The 4,967 restricted stock units are scheduled to vest in full one day before Calix’s next annual stockholder meeting. At vesting, each RSU converts into one share of Calix common stock, assuming the standard terms and conditions are satisfied.

What is the transaction code used in Wade Oosterman’s Calix (CALX) Form 4?

The transaction is coded "A" for a grant, award, or other acquisition of non-derivative securities. This indicates a compensation-related stock award rather than an open-market purchase or sale, aligning with Calix’s non-employee director equity compensation policy.