Rank One director buys 4,000 shares at $4.36

Rank One Computing Corp (ROC) director Kathleen Louise Kiernan purchased common stock in the company.

Rhea-AI Filing Summary

Rank One Computing Corp (ROC) director Kathleen Louise Kiernan purchased common stock in the company. On September 14, 2026, she bought 4,000 shares of ROC common stock in multiple open market transactions at a weighted average price of $4.3587 per share, resulting in direct ownership of 4,000 shares. No Rule 10b5-1 trading plan is reported for these purchases.

Insider Trade Summary

Net Buyer: 4,000 shares

Net Buy 1 txn

Insider Kiernan Kathleen Louise

Role Director

Bought 4,000 shs ($17K)

Type	Security	Shares	Price	Value
Purchase	Common Stock F1	4,000	$4.3587	$17K

Holdings After Transaction: Common Stock — 4,000 shares (Direct)

Footnotes (1)

1. F1. The number of securities reported represents an aggregate number of shares purchased in multiple open market transactions over a range of purchase prices. The price reported represents the weighted average price. The Reporting Person undertakes to provide to the staff of the SEC, the Issuer, or a stockholder of the Issuer, upon request, the number of shares purchased by the Reporting Person at each separate price within the range.

Key Figures

Shares purchased: 4,000 shares Weighted average purchase price: $4.3587 per share Shares owned after transaction: 4,000 shares +1 more

4 metrics

Shares purchased 4,000 shares Common stock acquired by director on September 14, 2026

Weighted average purchase price $4.3587 per share Open market purchases of ROC common stock

Shares owned after transaction 4,000 shares Direct ownership of ROC common stock following the reported purchase

Net buy shares 4,000 shares Net effect of reported Form 4 transactions

Key Terms

weighted average price, open market transactions, Rule 10b5-1

3 terms

weighted average price financial

"The price reported represents the weighted average price."

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

open market transactions financial

"shares purchased in multiple open market transactions over a range"

Open market transactions are the buying and selling of a company’s shares or other securities conducted on public exchanges or through the wider market rather than through private deals or negotiated placements. They matter to investors because these trades change supply and demand in real time—like shoppers affecting a store’s inventory—and so can move prices, signal management or investor sentiment, affect liquidity, and alter ownership stakes that influence future returns and risk.

Rule 10b5-1 regulatory

"No Rule 10b5-1 trading plan is reported for these purchases"

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

FAQ

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

What insider transaction did ROC report in this Form 4?

The filing reports that director Kathleen Louise Kiernan purchased 4,000 shares of Rank One Computing Corp common stock on September 14, 2026 in multiple open market transactions.

At what price did the ROC director buy the 4,000 shares?

The 4,000 ROC shares were purchased at a weighted average price of $4.3587 per share, reflecting multiple open market trades within a price range described in the filing’s footnote.

How many ROC shares does the director own after this transaction?

After the reported purchases, director Kathleen Louise Kiernan directly owns 4,000 shares of Rank One Computing Corp common stock, as shown in the post-transaction holdings line.

Was the ROC insider purchase made under a Rule 10b5-1 trading plan?

No. The Form 4 indicates no Rule 10b5-1 trading plan; the trading plan affirmation box is not checked, and no footnote states that the trades were made under such a plan.

What type of transaction did the ROC Form 4 disclose?

The Form 4 discloses a purchase of common stock coded as an open market or private transaction, with 4,000 shares acquired and held as direct ownership by the reporting person.

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

Form 4 Insider Transactions: What Each Field Means →

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Available on EDGAR 09/16/2026 - 07:51 AM Accepted by SEC EDGAR 09/16/2026 - 07:50 AM 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^*

Kiernan Kathleen Louise

(Last) (First) (Middle)

6526 SPYGLASS CIRCLE

(Street)

FERNANDINA BEACH FLORIDA 32034

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Rank One Computing Corp [ ROC ]

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)
09/14/2026

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	09/14/2026		P		4,000(1)	A	$4.3587	4,000(1)	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 number of securities reported represents an aggregate number of shares purchased in multiple open market transactions over a range of purchase prices. The price reported represents the weighted average price. The Reporting Person undertakes to provide to the staff of the SEC, the Issuer, or a stockholder of the Issuer, upon request, the number of shares purchased by the Reporting Person at each separate price within the range.

	/s/ Kathleen Louise Kiernan	09/16/2026
	** 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)