Cable One COO reports zero share ownership

Cable One, Inc. (CABO) had its Chief Operating Officer, Heather A. McCallion, file an initial Form 3 as a reporting person.

Rhea-AI Filing Summary

Cable One, Inc. (CABO) had its Chief Operating Officer, Heather A. McCallion, file an initial Form 3 as a reporting person. The filing lists her position in Cable One common stock, par value $0.01 per share, and reports 0 shares directly owned as of 2026-08-24.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider McCallion Heather A

Role Chief Operating Officer

Type	Security	Shares	Price	Value
holding	Common Stock, par value $0.01	--	--	--

Holdings After Transaction: Common Stock, par value $0.01 — 0 shares (Direct)

Key Figures

Total shares following holding entry: 0.0000 shares Par value per share: $0.01 Holding entries reported: 1

3 metrics

Total shares following holding entry 0.0000 shares Directly owned common stock position as of 2026-08-24

Par value per share $0.01 Cable One, Inc. Common Stock, par value $0.01 per share

Holding entries reported 1 Number of holding entries in the Form 3 transaction summary

Key Terms

par value, Common Stock, Power of Attorney

3 terms

par value financial

"Common Stock, par value $0.01"

Par value is the fixed amount printed on a bond or stock that represents its original value when issued. It’s like the face value of a coin or bill—what the issuer promises to pay back or the starting price of a stock—though it often doesn’t change with market prices. It matters because it helps determine certain financial details, like how much the company will pay back at maturity.

Common Stock financial

"Common Stock, par value $0.01"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

Power of Attorney regulatory

"remarks: Exhibit A Power of Attorney"

A power of attorney is a legal document that allows one person to make decisions and act on behalf of another person, often in financial or legal matters. It’s like giving someone a trusted helper or agent the authority to handle important tasks if you are unable to do so yourself. This matters to investors because it can impact how their assets are managed or transferred if they become unable to oversee their affairs.

FAQ

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

What does the Form 3 filed for CABO disclose about Heather A. McCallion?

The Form 3 identifies Heather A. McCallion as a reporting person and Chief Operating Officer of Cable One, Inc., and reports her beneficial ownership position in the company’s common stock as part of the initial disclosure required for insiders.

How many CABO shares does Heather A. McCallion report owning on this Form 3?

The Form 3 reports that Heather A. McCallion directly owns 0 shares of Cable One, Inc. common stock following the reported holding entry dated 2026-08-24.

What type of security is reported on Heather A. McCallion’s CABO Form 3?

The security reported is Cable One, Inc. Common Stock, par value $0.01 per share. The filing shows her direct ownership position in this class of security.

Is Heather A. McCallion an officer or director of Cable One, Inc. (CABO) according to the Form 3?

According to the Form 3, Heather A. McCallion is an officer of Cable One, Inc., serving as Chief Operating Officer. She is not indicated as a director or a 10% owner in this filing.

Does the CABO Form 3 for Heather A. McCallion report any insider buy or sell transactions?

No buy or sell transactions are reported. The Form 3 contains a holding entry only, with total shares following the entry shown as 0, and no transaction code indicating a purchase or sale.

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

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Available on EDGAR 08/25/2026 - 04:34 PM Accepted by SEC EDGAR 08/25/2026 - 04:33 PM Learn about SEC filing dates

SEC Form 3

FORM 3

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

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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:			3235-0104
Estimated average burden
hours per response:			0.5

1. Name and Address of Reporting Person^*

McCallion Heather A

(Last) (First) (Middle)

C/O CABLE ONE, INC.

210 E. EARLL DRIVE

(Street)

PHOENIX ARIZONA 85012

(City) (State) (Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
08/24/2026

3. Issuer Name and Ticker or Trading Symbol
Cable One, Inc. [ CABO ]

3a. Foreign Trading Symbol

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

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

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

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

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

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock, par value $0.01	0	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

Exhibit A Power of Attorney

	/s/ Christopher J. Arntzen for Heather A. McCallion	08/25/2026
	** 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 5 (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 3: SEC 1473 (03-26)