SEC Filing Document

Company: ERock, Inc.
Ticker: 
CIK: 2110029
Filing Type: S-1
Document Type: S-1
Date Filed: 2026-05-15
Accession Number: 0001193125-26-227199
Exchange: 
SIC Code: 3620
SIC Description: Electrical Industrial Apparatus
URL: https://www.sec.gov/Archives/edgar/data/2110029/000119312526227199/d12401ds1.htm

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other stock-based awards. We refer to these collectively herein as “Awards.” Table of Contents The following description of the 2026 Plan is not intended to be complete and is qualified in its entirety by reference to the complete text of the 2026 Plan, a copy of which will be filed as an exhibit to the registration statement of which this prospectus forms a part. Please read the 2026 Plan in its entirety. Administration The 2026 Plan will be administered by the compensation committee of our board of directors (or another committee designated by our board of directors to administer the 2026 Plan), which we refer to herein as the “Administrator.” The Administrator will have broad authority, subject to the provisions of the 2026 Plan, to administer and interpret the 2026 Plan and Awards granted thereunder. All decisions and actions of the Administrator will be final. Stock Subject to 2026 Plan

The maximum number of shares of Class A common stock that may be issued under the 2026 Plan will not exceed
shares (the “Share Pool”); however, the Share Pool will be increased on January 1 of each calendar year beginning in 2027 by a number of shares equal to 1.5% of the outstanding shares of the
Company’s Class A common stock and Class B common stock on the immediately preceding December 31 (or such lesser amount as approved by the Administrator). The Share Pool is subject to certain adjustments in the event of a change in our
capitalization. Shares of Class A common stock issued under the 2026 Plan may be either authorized and unissued shares or previously issued shares acquired by us. On termination or expiration of an Award under the 2026 Plan, in whole or in part, the
number of shares of Class A common stock subject to such Award but not issued thereunder or that are otherwise forfeited back to the Company will again become available for grant under the 2026 Plan. Additionally, shares retained or withheld in
payment of any exercise price, purchase price, or tax withholding obligation of an Award will again become available for grant under the 2026 Plan.

Eligibility

Current or
prospective employees, officers, non-employee directors, and other service providers of the Company and its affiliates will be eligible to participate in the 2026 Plan.

Under the terms of the 2026 Plan, the aggregate dollar value of equity-based and cash compensation for any non-employee
director for service on the Board may not exceed $750,000 during any calendar year; provided, that in the calendar year in which a non-employee director first joins the Board or during any calendar year in which a non-employee director is designated
as Chairman or Lead Director, the maximum aggregate dollar value of equity-based and cash compensation for the non-employee director may be up to 200% of this limit.

Types of Awards

Stock
Options. Stock options granted under the 2026 Plan may be granted as incentive stock options or non-qualified stock options, in either case with a term not to exceed 10 years. Subject to the express
provisions of the 2026 Plan, stock options generally may be exercised over such period, in installments or otherwise, as the Administrator may determine. The exercise price for any stock option granted may not generally be less than the
fair market value of the Class A common stock subject to that option on the grant date. The exercise price may be paid in cash or such other method as determined by the Administrator, including an irrevocable commitment by a broker to pay
over such amount from a sale of the shares issuable under an option, the delivery of previously owned shares, or withholding of shares deliverable upon exercise.

Stock Appreciation Rights. SARs may be granted alone or in conjunction with all or part of a stock option. Upon
exercising a SAR, the participant is entitled to receive the amount by which the fair market value of the Class A common stock at the time of exercise exceeds the exercise price of the SAR. This amount is payable in shares of Class A common
stock, cash, restricted stock, or a combination thereof, at the Administrator’s discretion. The exercise price for any SARs may not generally be less than the fair market value of the Class A common stock subject to the SAR on the grant
date.

Restricted Stock and RSUs. Awards of restricted stock consist of shares of stock that are transferred to the
participant subject to restrictions that may result in forfeiture if specified conditions are not satisfied. RSUs result

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in the transfer of cash or shares of Class A common stock to the participant only after specified conditions are satisfied. The Administrator will determine the restrictions and conditions
applicable to each award of restricted stock or RSUs, which may include performance vesting conditions.

Incentive
Bonuses. Each incentive bonus will confer upon the participant the opportunity to earn a future payment tied to the level of achievement with respect to one or more performance criteria established for a specified performance period. The
Administrator will establish the performance criteria and level of achievement versus these criteria that will determine the threshold, target, and maximum amount payable under an incentive bonus, which criteria may be based on financial performance
and/or personal performance evaluations. Payment of the amount due under an incentive bonus may be made in cash or shares of Class A common stock, as determined by the Administrator.

Other Stock-Based Awards. Other stock-based awards are Awards denominated in or payable in, valued in whole or in part
by reference to, or otherwise based on or related to, the value of the Class A common stock.

Performance Criteria

The Administrator may specify certain performance criteria which must be satisfied before Awards will be granted or will vest.
The performance goals may vary from participant to participant, group to group, and period to period.

Transferability

Awards generally may not be sold, transferred for value, pledged, assigned, or otherwise alienated or hypothecated by a
participant other than by will or the laws of descent and distribution, and each stock option or SAR may be exercisable only by the participant during his or her lifetime.

Clawback

Awards will be
subject to recoupment in accordance with any clawback policy that we adopt, including any clawback policy required under Rule 10D-1 of the Exchange Act.

Amendment and Termination

Our board of directors has the right to amend, alter, suspend, or terminate the 2026 Plan at any time, provided certain
enumerated material amendments may not be made without stockholder approval. No amendment or alteration to the 2026 Plan or an Award or Award agreement will be made that would materially impair the rights of the holder, without such holder’s
consent; however, no consent will be required if the Administrator determines in its sole discretion and prior to the date of any change in control that such amendment or alteration either is required or advisable in order for us, the 2026 Plan, or
such Award to satisfy any law or regulation or to meet the requirements of or avoid adverse financial accounting consequences under any accounting standard, or is not reasonably likely to significantly diminish the benefits provided under such
Award, or that any such diminishment has been adequately compensated. The 2026 Plan is expected to be adopted by our board of directors and approved by our stockholders in connection with this offering and will automatically terminate as to the
grant of future awards, unless earlier terminated by our board of directors, 10 years after such approval by our board of directors.

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Director Compensation

The following table presents the total compensation for each person who served as a
non-employee member of the ER Holdings board of managers during 2025. All of our NEOs other than Mr. Blakely also served as directors during 2025 and compensation paid to them for services on the ER
Holdings board of managers (if any) is reflected in the 2025 Summary Compensation Table above.

Name and Principal Position Year Fees Earned or Paid in Cash ($) Stock Awards ($) (1) Total Compensation ($)

Jim Decker 2025 198,172 — 198,172

Dan Brouillette (2) 2025 — 48,774 48,774

Mark Patterson (2) 2025 — 48,774 48,774

Sameer Reddy 2025 — — —

Hans Kobler 2025 — — —

Steven Yang 2025 — — —

(1)	Amounts reported in this column represent the aggregate grant date fair value of the Compensatory Units
granted during 2025, calculated in accordance with FASB ASC Topic 718, disregarding the effect of estimated forfeitures. For additional information regarding the assumptions underlying this calculation please read Note 14—Stock-Based
Compensation, to our consolidated financial statements for the year ended December 31, 2025.

(2)	As of December 31, 2025, Messrs. Brouillette and Patterson each held 968 outstanding unvested
Compensatory Units.

ER Holdings entered into service agreements with each of Messrs. Decker,
Brouillette, and Patterson pursuant to which they are eligible to receive the following cash payments and equity incentive awards.