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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its conduct of a trade or business within the United States may be subject to an additional branch profits tax at a 30% rate (or such lower rate as may be specified by an applicable income tax treaty). Sale, Exchange or Other Taxable Disposition of Class A common stock. Subject to the discussion below under “—Additional Withholding Tax on Payments Made to Foreign Accounts,” a Non-U.S. Holder generally will not be subject to U.S. federal income or withholding tax on any gain recognized upon the sale, exchange or other taxable disposition of shares of our Class A common stock, unless: • such gain is effectively connected with the conduct by such Non-U.S. Holder of a trade or business within the United States (and, if required by an applicable income tax treaty, is attributable to a permanent establishment or a fixed base maintained by such Non-U.S. Holder within the United States);

• such Non-U.S. Holder is a nonresident alien individual who is present
in the United States for 183 days or more in the taxable year of disposition and certain other conditions are met; or

• we are or have been a “United States real property holding corporation” for U.S. federal income
tax purposes (a “USRPHC”) at any time within the shorter of the five-year period ending on the date of disposition or the period that such Non-U.S. Holder held shares of our Class A common
stock (the “applicable period”).

Gain described in the first bullet above generally will be
subject to U.S. federal income tax on a net income basis at the graduated rates generally applicable to United States persons. A Non-U.S. Holder described in the first bullet above that is a corporation for U.S. federal income tax purposes also may
be subject to the branch profits tax described above. A Non-U.S. Holder described in the second bullet above generally will be subject to U.S. federal income tax at a flat rate of 30% (or such lower rate as may be specified by an applicable income
tax treaty) on the gain, which may be offset by certain U.S.-source capital losses of the Non-U.S. Holder recognized in the same taxable year.

We believe we are not, and do not expect to become a USRPHC. However, no assurance can be given that we will not become a
USRPHC in the future. Even if we are or were to become a USRPHC, so long as our Class A common stock is “regularly traded on an established securities market” (within the meaning of Section 897(c)(3) of the Code), a Non-U.S. Holder will
be subject to U.S. federal income tax on gain from the disposition of our Class A common stock only if such Non-U.S. Holder actually or constructively owned more than 5% of our Class A common stock at any time during the applicable period. If our
Class A common stock were not so regularly traded, (i) the Non-U.S. Holder disposing of our Class A common stock generally would be subject to U.S. federal income tax on any gain recognized on the disposition on a net income basis as if such gain
were effectively connected with the conduct of a U.S. trade or business, (ii) the purchaser of the Class A common stock generally would be required to withhold and remit to the IRS 15% of the purchase price, and (iii) the Non-U.S. Holder generally
would be required to file a U.S. federal income tax return with respect to any gain recognized. Non-U.S. Holders should consult their own tax advisors regarding the possible application of these rules to their investment in our Class A common stock.

Information Reporting Requirements and Backup Withholding. The amount of dividends or proceeds paid to a Non-U.S. Holder, the name and address of the Non-U.S. Holder and the amount of tax, if any, withheld generally will be reported to the IRS. Copies of these information returns
may also be made available under the provisions of a specific treaty or agreement to the tax authorities of the country in which the Non-U.S. Holder resides.

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A Non-U.S. Holder generally will be
required to provide proper certification (usually on a Form W-8BEN or Form W-8BEN-E, as applicable) to establish that the Non-U.S. Holder is not a U.S. person or otherwise qualifies for an exemption in order to avoid backup withholding tax with respect to our payment of dividends on, or the proceeds from the disposition of, our
Class A common stock. Backup withholding is not an additional tax. Any amounts withheld under the backup withholding rules will be allowed as a refund or a credit against that Non-U.S. Holder’s U.S.
federal income tax liability provided the required information is timely furnished to the IRS. Each Non-U.S. Holder should consult its tax advisor regarding the application of the information reporting rules
and backup withholding to it.

Additional Withholding Tax on Payments Made to Foreign Accounts. Withholding taxes
may be imposed under Sections 1471 to 1474 of the Code, the Treasury Regulations promulgated thereunder and other official guidance (commonly referred to as “FATCA”) on certain types of payments made to
non-U.S. financial institutions and certain other non-U.S. entities. Specifically, a 30% withholding tax may be imposed on dividends on, or (subject to the proposed
Treasury Regulations discussed below) gross proceeds from the sale or other disposition of, our Class A common stock paid to a “foreign financial institution” or a “non-financial foreign
entity” (each as defined in the Code), unless (1) the foreign financial institution undertakes certain diligence, reporting and withholding obligations, (2) the non-financial foreign entity
either certifies it does not have any “substantial United States owners” (as defined in the Code) or furnishes identifying information regarding each substantial United States owner, or (3) the foreign financial institution or non-financial foreign entity otherwise qualifies for an exemption from these rules. If the payee is a foreign financial institution and is subject to the diligence, reporting and withholding requirements in
(1) above, it must enter into an agreement with the U.S. Department of the Treasury requiring, among other things, that it undertake to identify accounts held by certain “specified United States persons” or “United States
owned foreign entities” (each as defined in the Code), annually report certain information about such accounts, and withhold 30% on certain payments to non-compliant foreign financial institutions and
certain other account holders. Accordingly, the entity through which our Class A common stock is held will affect the determination of whether such withholding is required. Foreign financial institutions located in jurisdictions that have an
intergovernmental agreement with the United States governing FATCA may be subject to different rules. Future Treasury Regulations or other official guidance may modify these requirements.

Under the applicable Treasury Regulations and administrative guidance, withholding under FATCA generally applies to payments
of dividends on our Class A common stock. Under proposed regulations, the preamble to which states that taxpayers may rely on the proposed regulations until final regulations are issued, this withholding tax will not apply to the gross proceeds
from the sale, exchange, redemption or other taxable disposition of our Class A common stock. There can be no assurance that the proposed regulations will be finalized in their present form. If FATCA withholding is imposed, a beneficial owner
that is not a foreign financial institution generally may obtain a refund of any amounts withheld by filing a U.S. federal income tax return (which may entail significant administrative burden).

You should consult your tax advisor regarding the possible implications of FATCA withholding tax on an investment in our
Class A common stock (including the possibility of FATCA withholding on payments made to financial intermediaries through which the Non-U.S. Holders hold their Class A common stock).

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UNDERWRITING

Under the terms and subject to the conditions in an underwriting agreement dated the date of this prospectus, the underwriters
named below, for whom Morgan Stanley & Co. LLC and J.P. Morgan Securities LLC are acting as representatives, have severally agreed to purchase, and we have agreed to sell to them, severally, the number of shares indicated below:

Name Number of Shares

Morgan Stanley & Co. LLC

J.P. Morgan Securities LLC

Barclays Capital Inc.

BofA Securities, Inc.

Evercore Group L.L.C.

Guggenheim Securities, LLC

Nomura Securities International, Inc.

WR Securities, LLC

BNP Paribas Securities Corp.

Total:

“Wolfe | Nomura Alliance” is the marketing name used by Wolfe Research Securities
and Nomura Securities International, Inc. in connection with certain equity capital markets activities conducted jointly by the firms. Both Nomura Securities International, Inc. and WR Securities, LLC are serving as underwriters in the offering
described herein. In addition, WR Securities, LLC and certain of its affiliates may provide sales support services, investor feedback, investor education, and/ or other independent equity research services in connection with this offering.