Statement of Changes in Beneficial Ownership (Form 4)

FORM 4 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 that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN 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

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1. Name and Address of Reporting Person * Energy Impact Partners LLC 2. Issuer Name and Ticker or Trading Symbol ERock, Inc. [EROC] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director __X__ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 600 THIRD AVENUE, 38TH FLOOR 3. Date of Earliest Transaction (Month/Day/Year) 06/11/2026 (Street) NEW YORK, NY 10016 4. If Amendment, Date Original Filed (Month/Day/Year) 6. Individual or Joint/Group Filing (Check Applicable Line) ___ Form filed by One Reporting Person _X_ Form filed by More than One Reporting Person (City) (State) (Zip) 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 A Common Stock 06/11/2026 J(2) 19,350,897 A (2) 19,350,897 I See Footnotes(1)(4)(5) Class B Common Stock 06/11/2026 J(6) 6,041,206(7) D (6) 83,355,210 I See Footnotes(3)(4)(5)

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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 Underlying Securities (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 of Derivative Security: 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

(8)

06/11/2026

S(6)

6,041,206

(8)

(8)

Class A Common Stock

6,041,206

(6)

83,355,210

I

See Footnotes(3)(4)(5)

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Energy Impact Partners LLC 600 THIRD AVENUE, 38TH FLOOR NEW YORK, NY 10016		X
EIP Flagship Fund I ER Holdings LLC 600 THIRD AVENUE, 38TH FLOOR NEW YORK, NY 10016		X
EIF ER Holdings LLC 600 THIRD AVENUE, 38TH FLOOR NEW YORK, NY 10016		X
Energy Impact Fund (FT-B) LP 600 THIRD AVENUE, 38TH FLOOR NEW YORK, NY 10016		X
Energy Impact Fund (FT-D) LP 600 THIRD AVENUE, 38TH FLOOR NEW YORK, NY 10016		X

Signatures

/s/ Energy Impact Partners LLC, Daniel Reichert as attorney-in-fact		06/15/2026
**Signature of Reporting Person		Date
/s/ EIP Flagship Fund I ER Holdings LLC, Daniel Reichert as attorney-in-fact		06/15/2026
**Signature of Reporting Person		Date
/s/ EIF ER Holdings LLC, Daniel Reichert as attorney-in-fact		06/15/2026
**Signature of Reporting Person		Date
/s/ Energy Impact Fund (FT-B) LP, Daniel Reichert as attorney-in-fact		06/15/2026
**Signature of Reporting Person		Date
/s/ Energy Impact Fund (FT-D) LP, Daniel Reichert as attorney-in-fact		06/15/2026
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	These securities are directly held by Energy Impact Fund (FT-B) LP ("FT-B").
(2)	In connection with the Issuer's initial public offering of Class A common stock (the "Offering"), EIF ER Blocker LLC ("EIF ER Blocker") merged with and into the Issuer pursuant to the Blocker Mergers (as defined in the Issuer's prospectus filed with Securities and Exchange Commission on June 10, 2026 (the "Prospectus")). As a result of the merger, 20,751,551 Class A Units held by EIF ER Blocker were cancelled, and, as consideration pursuant to the Blocker Mergers, FT-B received 19,350,897 shares of Class A common stock of the Issuer and approximately $27.8 million in cash from the net proceeds from the closing of the Offering.
(3)	These securities are directly held by EIP Flagship Fund I ER Holdings LLC ("Flagship").
(4)	Each of EIF ER Holdings LLC ("EIF ER Holdings", as the sole owner of Flagship), Energy Impact Fund (FT-D) LP ("FT-D", as owner of EIF ER Holdings), Energy Impact Partners LLC ("EIP LLC", as the managing member of EIF ER Holdings and the general partner of FT-D) and Hans Kobler, a nominee to the Issuer's Board of Directors ("Board") (as the managing member of EIP LLC), may also be deemed to be the beneficial owners having shared voting power and shared investment power of the securities held by Flagship. Each of FT-B, EIP LLC (as the general partner of FT-B) and Mr. Kobler (as the managing member of EIP LLC) may also be deemed to be the beneficial owners having shared voting power and shared investment power of the securities held by FT-B. Voting and investment decisions with respect to the securities described in this Form 4 are made by the investment committee of EIP LLC, which is comprised of seven individuals,
(5)	(Continued from footnote 4) including Mr. Kobler, Lindsay Luger and Sameer Reddy, each of whom is a nominee to the Issuer's Board. Each member of this investment committee disclaims beneficial ownership of all securities described by this Form 4 except to the extent of his or her pecuniary interest therein.
(6)	The Issuer used approximately $119.9 million of the net proceeds from the closing of the Offering to purchase 6,041,206 Class B Units from Flagship. An equal number of shares of the Issuer's Class B common stock were cancelled in connection with the repurchase of the Class B Units.
(7)	Shares of the Issuer's Class B common stock ("Class B Common Stock") have no economic value and have one vote per share. One share of Class B Common Stock is issued for each Class B Unit ("Class B Units") of Enchanted Rock Holdings, LLC ("ER Holdings") held. Upon an exchange of Class B Units for shares of the Issuer's Class A common stock ("Class A Common Stock"), an equivalent number of shares of Class B Common Stock held by such holder will be automatically cancelled.
(8)	The Class B Units are exchangeable, at the holder's option, on a one-for-one basis into shares of Class A Common Stock.

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