ERock CFO disposes 449,233 units in IPO deal

ERock, Inc. Chief Financial Officer Robert Ian Blakely reported dispositions tied to the company’s initial public offering.

Rhea-AI Filing Summary

ERock, Inc. Chief Financial Officer Robert Ian Blakely reported dispositions tied to the company’s initial public offering. He disposed of 449,233 Class B Units of Enchanted Rock Holdings, LLC to the issuer at $19.85 per unit, matching the IPO Class A share price paid by underwriters less his offering expenses. In connection with this sale, the issuer automatically cancelled 449,233 shares of Class B Common Stock held by him, leaving him with 4,487,528 shares following the transactions. Each Class B Unit had been exchangeable on a one-for-one basis into shares of Class A Common Stock or cash at the issuer’s election.

Insider Trade Summary

Disposition: 898,466 shares

Disposition 2 txns

Insider Blakely Robert Ian

Role Chief Financial Officer

Type	Security	Shares	Price	Value
Disposition	Class B Units	449,233	$19.85	$8.92M
Disposition	Class B Common Stock	449,233	$0.00	$0.00

Holdings After Transaction: Class B Units — 4,487,528 contracts (Direct); Class B Common Stock — 4,487,528 shares (Direct)

Footnotes (2)

1. F1. Represents Class B Units of Enchanted Rock Holdings, LLC sold by the Reporting Person to the Issuer in connection with the closing of the Issuer's initial public offering ("IPO") at a price per Class B Unit of $19.85 (the per-share price paid by the underwriters for shares of the Class A Common Stock in the IPO, less the Reporting Person's share of offering expenses). In connection with such sale, the Issuer automatically cancelled an equivalent number of shares of Class B Common Stock held by the Reporting Person.
2. F2. The Class B Units are exchangeable, at the holder's option, on a one-for-one basis into shares of Class A Common Stock of the Issuer or cash (at the Issuer's election). Upon exchange of a Class B Unit, the corresponding share of Class B Common Stock will be automatically cancelled.

Key Figures

Class B Units disposed: 449,233 units Price per Class B Unit: $19.85 Class B Common shares cancelled: 449,233 shares +2 more

5 metrics

Class B Units disposed 449,233 units Sold to issuer in connection with IPO

Price per Class B Unit $19.85 Per-share price paid by underwriters for Class A in IPO, less expenses

Class B Common shares cancelled 449,233 shares Automatically cancelled upon sale of Class B Units

Shares following transaction 4,487,528 shares Total shares held after dispositions

Exchange ratio 1 Class B Unit : 1 Class A share Class B Units exchangeable into Class A Common Stock or cash

Key Terms

Class B Units, initial public offering ("IPO"), Class A Common Stock, Class B Common Stock, +1 more

5 terms

Class B Units financial

"Represents Class B Units of Enchanted Rock Holdings, LLC sold by the Reporting Person"

initial public offering ("IPO") financial

"sold by the Reporting Person to the Issuer in connection with the closing of the Issuer's initial public offering ("IPO")"

A company’s first sale of stock to the public through a stock exchange, marking its move from private ownership to public ownership. For investors it creates a new opportunity to buy a stake early, sets a market price for the business, and often brings higher attention and volatility—think of a local bakery that used to be family-run finally selling shares so the whole neighborhood can own a piece; that change affects value, control and risk.

Class A Common Stock financial

"the per-share price paid by the underwriters for shares of the Class A Common Stock in the IPO"

Class A common stock is a category of a company’s shares that carries a specific set of ownership rights—most commonly defined voting power and claims on dividends—set out in the company’s charter. For investors it matters because the class determines how much influence you have over corporate decisions, the share’s likely dividend and trading behavior, and how it compares in value to other share classes, like choosing a particular seat with different privileges at the company’s decision-making table.

Class B Common Stock financial

"the Issuer automatically cancelled an equivalent number of shares of Class B Common Stock held by the Reporting Person"

A class B common stock is one of multiple types of a company’s ordinary shares that carries specific rights—often different voting power or dividend priority—compared with other classes. For investors it matters because those differences affect how much influence you have over company decisions, the income you might receive, and how freely the shares trade; think of it like owning a car with different keys: some keys let you start the engine and open the trunk, others only unlock the door.

Disposition to issuer financial

"transaction_code_description": "Disposition to issuer""

FAQ

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

What insider transaction did ERock (EROC) report for its CFO?

ERock’s Chief Financial Officer Robert Ian Blakely disposed of 449,233 Class B Units and an equivalent 449,233 shares of Class B Common Stock. The transactions were issuer dispositions connected to the closing of ERock’s initial public offering at a price of $19.85 per Class B Unit.

At what price were the ERock (EROC) Class B Units disposed of?

The Class B Units were sold to the issuer at $19.85 per unit. This matched the per-share price underwriters paid for Class A Common Stock in the IPO, reduced by Robert Ian Blakely’s share of offering expenses as described in the footnote.

How many ERock (EROC) shares did the CFO hold after the Form 4 transaction?

Following the reported dispositions, Robert Ian Blakely held 4,487,528 shares. This figure reflects his remaining position in ERock after 449,233 shares of Class B Common Stock were automatically cancelled in connection with the IPO-related sale of Class B Units to the issuer.

How are ERock (EROC) Class B Units related to Class A Common Stock?

Each Class B Unit is exchangeable, at the holder’s option, on a one-for-one basis into shares of ERock’s Class A Common Stock or cash at the issuer’s election. When a Class B Unit is exchanged, the corresponding share of Class B Common Stock is automatically cancelled.

Why were ERock (EROC) Class B Common shares cancelled in this Form 4?

In connection with the sale of 449,233 Class B Units to the issuer at the IPO closing, ERock automatically cancelled an equivalent 449,233 shares of Class B Common Stock held by Robert Ian Blakely. This automatic cancellation is described directly in the Form 4 footnote.

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

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Accepted by SEC EDGAR 06/12/2026 - 06:21 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^*

Blakely Robert Ian

(Last) (First) (Middle)

C/O EROCK, INC.

1113 VINE STREET, SUITE 101

(Street)

HOUSTON TEXAS 77002

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
ERock, Inc. [ EROC ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/11/2026

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
Class B Common Stock	06/11/2026		D(1)		449,233	D	(1)	4,487,528	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
Class B Units	(2)	06/11/2026		D(1)			449,233	(2)	(2)	Class A Common Stock	449,233	$19.85(1)	4,487,528	D

Explanation of Responses:

1. Represents Class B Units of Enchanted Rock Holdings, LLC sold by the Reporting Person to the Issuer in connection with the closing of the Issuer's initial public offering ("IPO") at a price per Class B Unit of $19.85 (the per-share price paid by the underwriters for shares of the Class A Common Stock in the IPO, less the Reporting Person's share of offering expenses). In connection with such sale, the Issuer automatically cancelled an equivalent number of shares of Class B Common Stock held by the Reporting Person.

2. The Class B Units are exchangeable, at the holder's option, on a one-for-one basis into shares of Class A Common Stock of the Issuer or cash (at the Issuer's election). Upon exchange of a Class B Unit, the corresponding share of Class B Common Stock will be automatically cancelled.

	/s/ Davis Zapffe, Attorney-in-Fact for Robert Ian Blakely	06/12/2026
	** 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)