Form: 3

Initial statement of beneficial ownership of securities

Documents

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*
Energy Impact Partners LLC

(Last) (First) (Middle)
600 THIRD AVENUE, 38TH FLOOR

(Street)
NEW YORK NY 10016

(City) (State) (Zip)
2. Date of Event Requiring Statement (Month/Day/Year)
06/09/2026
3. Issuer Name and Ticker or Trading Symbol
ERock, Inc. [ EROC ]
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director X 10% Owner
Officer (give title below) Other (specify below)
5. If Amendment, Date of 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
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)
Class B Common Stock 89,396,416(1) I See Footnotes(2)(3)
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
Class B Units (4) (4) Class A Common Stock 89,396,416 (4) I See Footnotes(2)(3)
Class M Units (4)(5)(6) (4)(5)(6) Class A Common Stock 107,739 (4)(5)(6) I See Footnotes(2)(3)
1. Name and Address of Reporting Person*
Energy Impact Partners LLC

(Last) (First) (Middle)
600 THIRD AVENUE, 38TH FLOOR

(Street)
NEW YORK NY 10016

(City) (State) (Zip)
1. Name and Address of Reporting Person*
EIP Flagship Fund I ER Holdings LLC

(Last) (First) (Middle)
600 THIRD AVENUE, 38TH FLOOR

(Street)
NEW YORK NY 10016

(City) (State) (Zip)
1. Name and Address of Reporting Person*
EIF ER Holdings LLC

(Last) (First) (Middle)
600 THIRD AVENUE, 38TH FLOOR

(Street)
NEW YORK NY 10016

(City) (State) (Zip)
1. Name and Address of Reporting Person*
Energy Impact Fund (FT-B) LP

(Last) (First) (Middle)
600 THIRD AVENUE, 38TH FLOOR

(Street)
NEW YORK NY 10016

(City) (State) (Zip)
1. Name and Address of Reporting Person*
Energy Impact Fund (FT-D) LP

(Last) (First) (Middle)
600 THIRD AVENUE, 38TH FLOOR

(Street)
NEW YORK NY 10016

(City) (State) (Zip)
Explanation of Responses:
1. 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.
2. These securities are directly held by EIP Flagship Fund I ER Holdings LLC ("Flagship").
3. 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. Voting and investment decisions with respect to the securities described in this Form 3 are made by the investment committee of EIP LLC, which comprises seven individuals, 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 in this Form 3 except to the extent of his or her pecuniary interest therein.
4. The Class B Units are exchangeable, at the holder's option, on a one-for-one basis into shares of Class A Common Stock.
5. Reflect Class M Units ("Class M Units") of ER Holdings, which are "profits interests" for U.S. federal income tax purposes. Vested Class M Units are convertible, at the holder's option, into a number of Class B Units generally equal to the product of (a) the number of vested Class M Units to be converted, and (b) a fraction, the numerator of which is the amount that would be distributed in respect of a vested Class M Unit (taking into account the applicable threshold amount), and the denominator of which is the amount that would be distributed in respect of a Class B Unit, in each case if, immediately before the exchange, ER Holdings were to sell all of its assets for their fair market values, pay any liabilities, and distribute the proceeds available for distribution, subject to certain adjustments. Class M Units have no expiration date.
6. All of these Class M Units have vested.
Remarks:
Exhibit 24 - Power of Attorney
/s/ Energy Impact Partners LLC, Daniel Reichert as attorney-in-fact 06/09/2026
/s/ EIP Flagship Fund I ER Holdings LLC, Daniel Reichert as attorney-in-fact 06/09/2026
/s/ EIF ER Holdings LLC, Daniel Reichert as attorney-in-fact 06/09/2026
/s/ Energy Impact Fund (FT-B) LP, Daniel Reichert as attorney-in-fact 06/09/2026
/s/ Energy Impact Fund (FT-D) LP, Daniel Reichert as attorney-in-fact 06/09/2026
** 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.