SEC Filing Document

Company: ERock, Inc.
Ticker: 
CIK: 2110029
Filing Type: DRS/A
Document Type: DRS/A
Date Filed: 2026-04-01
Accession Number: 0001193125-26-138217
Exchange: 
SIC Code: 3620
SIC Description: Electrical Industrial Apparatus
URL: https://www.sec.gov/Archives/edgar/data/2110029/000119312526138217/filename1.htm

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high quality personnel. Safety is a focus for our operations, and we have a proven track record in safety with average TRIR of 0.93 for the years ended December 31, 2025, 2024 and 2023. We conduct weekly company-wide safety meetings and biweekly safety trainings in addition to other additional ad hoc safety trainings. We also have a designated safety leader responsible for advancing our culture of safety. Employee Welfare and Development We provide employees the option to participate in health and welfare plans, including medical, dental, life, accidental death and dismemberment and short-term and long-term disability insurance plans. We also offer a number of health and wellness programs, including telemedicine, health screens and fitness reimbursement as well as access to the Employee Assistance Program which provides employees and their family members access to professional providers to help navigate challenging life events 24 hours a day/365 days a year. Legal Proceedings

are from time to time involved in other various claims, litigation matters, contract negotiations and disputes, and we anticipate that we will be involved in such matters from time to time in the future. The operating hazards inherent in our
business expose us to claims and litigation, including personal injury litigation, environmental litigation, contractual litigation with customers, intellectual property litigation, tax or securities litigation and administrative actions by
regulatory agencies. Risks associated with litigation include potential negative outcomes, the costs associated with asserting our claims or defending such lawsuits, and the diversion of management’s attention to these matters. We may also be
subject to significant legal costs in defending these actions, which we may or may not be able to recoup depending on the results of such claim. While many of these matters involve inherent uncertainty, we believe that the amount of the liability,
if any, ultimately incurred with respect to current proceedings or claims will not have a material adverse effect on our consolidated financial position as a whole or on our liquidity, capital resources or future annual results of operations.

Table of Contents

MANAGEMENT

The following table sets forth certain information as of    , 2026 regarding individuals who are
expected to serve as our executive officers and directors upon the completion of this offering.

Name Age Position

John Carrington 59 Chief Executive Officer and Director

Corey Amthor 59 President

Ian Blakely 49 Chief Financial Officer

Paul Froutan 51 Chief Operating Officer

Davis Zapffe 38 General Counsel and Secretary

Non-Employee Director Nominees:

Charles Boynton 58 Director Nominee

Dan Brouillette 63 Director Nominee

Hans Kobler 60 Director Nominee

Mark Patterson 65 Director Nominee

Sameer Reddy 42 Director Nominee

Tony Satterthwaite 65 Director Nominee

Our Executive Officers and Director

John Carrington has served as Chief Executive Officer of ER Holdings since November 2025 and as Chairman of the
ER Holdings board of managers since June 2025. Mr. Carrington has served as Chief Executive Officer and a director of ERock, Inc. since January 2026. Previously, from December 2013 through December 2024, Mr. Carrington served as Chief Executive
Officer and a member of the board of directors of Stem, Inc., a NYSE-listed provider of AI-driven clean energy software and services. Prior to joining Stem, Mr. Carrington served as Chief Executive Officer of MiaSolé, Inc., a manufacturer of
thin-film photovoltaic solar panels, through its sale to Hanergy in December 2012. Earlier in his career, Mr. Carrington worked at First Solar and spent over 16 years at General Electric Company, where he held leadership roles across product
management, manufacturing, sales and international operations, including four years leading commercial and marketing activities in Japan. Mr. Carrington holds a Bachelor of Arts in Marketing and Economics from the University of Colorado, Boulder.

Mr. Carrington is qualified to serve on our board of directors due to his extensive executive leadership
experience in the energy and infrastructure sectors and his experience leading companies through periods of rapid growth and transformation.

Corey Amthor has served on the ER Holdings board of managers since November 2014 and as ER Holdings’
President since March 2020. Mr. Amthor has served as President of ERock, Inc. since January 2026. Mr. Amthor also served as ER Holdings’ interim Chief Executive Officer from June 2025 to December 2025 and as its Chief Financial Officer from
June 2024 to June 2025. Prior to joining ER Holdings in 2014, Mr. Amthor held senior roles at Calpine, ConAgra, DuPont/Conoco, and Statoil. Mr. Amthor holds a Bachelor of Science in Agricultural Economics and an MBA from the University of Missouri.

Ian Blakely has served as ER Holdings’ Chief Financial Officer since June 2025, a role he previously
held from October 2014 to April 2020. Mr. Blakely has served as Chief Financial Officer of ERock, Inc. since January 2026. Since joining ER Holdings in 2015, Mr. Blakely has held roles of increasing responsibility, including serving as ER
Holdings’ Chief Strategy Officer from May 2022 to June 2025 and as Chief Technology Officer and

Table of Contents

Executive Vice President of Asset Management from April 2020 to May 2022. Before joining the Company, Mr. Blakely worked with venture capital and private equity funds specializing in energy,
supporting teams in developing, commercializing and scaling technology businesses. Mr. Blakely holds a Bachelor of Science in Economics from Duke University and an MBA from MIT’s Sloan School of Management.

Paul Froutan has served as ER Holdings’ Chief Operating Officer since February 2024. From May 2022 to
February 2024, he served as ER Holdings’ Chief Technology Officer. Prior to joining ER Holdings, Mr. Froutan served as Chief Financial Officer at Xenex Disinfection Services, a San Antonio, Texas-based developer and provider of ultraviolet
light-based disinfection technologies for healthcare and other commercial environments, from January 2012 to September 2021. At Xenex, he also held the position of Chief Operating Officer from January 2012 to September 2020. Before Xenex, Mr.
Froutan led Google’s Global Data Center Operations, overseeing the design, construction, and management of its worldwide data centers and server infrastructure. Mr. Froutan holds a Bachelor of Science in Mechanical Engineering and an MBA
from the University of Texas at Austin.

Davis Zapffe has served as ER Holdings’ General Counsel and
Secretary since May 2025 and as General Counsel and Secretary of ERock, Inc. since January 2026. From March 2024 to November 2024, he served as General Counsel of Arkon Energy, a digital infrastructure company, where he led all legal aspects of
corporate transactions, including regulatory and governance functions. From August 2021 to November 2023, he served as the General Counsel of Argo Blockchain, a bitcoin mining and technology company, where he played a leading role in that
company’s successful initial public offering on the Nasdaq and managed all of the company’s legal, regulatory and corporate governance functions. From September 2017 to September 2021, he served as Senior Counsel at Oasis Petroleum, a
hydrocarbon exploration and hydraulic fracturing company, where he advised on energy development, midstream, upstream, and oil and gas legal matters. Mr. Zapffe began his legal career as an Associate Attorney at Vinson & Elkins LLP. Mr. Zapffe
holds a Bachelor of Science in Electrical Engineering from the University of Texas at Austin and a Juris Doctor from the University of Houston.

Non-Employee Director Nominees

Charles Boynton is expected to
serve as one of our directors upon completion of this offering. He has served as Chief Financial Officer of Nextpower Inc. (Nasdaq: NXT, and formerly known as Nextracker Inc.), a leading provider of intelligent power generation technology and
solutions for solar power plants, since May 2024. Prior to his appointment, Mr. Boynton served on Nextpower’s board of directors, where he served as chair of the audit committee, from February of 2023 until March 2024. Mr. Boynton has
more than 30 years of finance and accounting experience, as well as significant experience in the solar industry. Prior to joining Nextpower, Mr. Boynton served as the Chief Financial Officer at Logitech, a global provider of personal computer and
mobile accessories from February 2023 to May 2024. He also served as Executive Vice President and Chief Financial Officer at Poly, a global provider of premium audio, video, and collaboration products and software from March 2019 until its
acquisition by HP Inc. in October 2022. From June 2010 to July 2018, Mr. Boynton served as Executive Vice President and Chief Financial Officer of SunPower Corporation, a U.S. solar technology and services provider, and from June 2015 to June 2018,
he served as the Chief Executive Officer of 8point3 Energy Partners, a U.S. growth-oriented solar energy partnership. Prior to 8point3, he served as the Chief Financial Officer of other public and private companies. Mr. Boynton holds a Bachelor of
Science degree in Accounting from the Kelley School of Business at Indiana University, Bloomington and an MBA in Finance and International Business from the Northwestern University Kellogg School of Management.