BREAKING · ANSWER KEY
At Holtec, still waiting to go public, the operating company borrowed $110 million from the founder’s side in July. One of the two rates is 1.0% per month, not per year
August 25, 2026 · Form S-1 Amendment No.1 (cover dated Aug 21 / EDGAR Filing Date Aug 24) × the original S-1
Holtec Nuclear, in the nuclear business, filed an amendment to its prospectus with the SEC. The SEC accepted it on the evening of August 21, 2026, Eastern time, and the EDGAR Filing Date is August 24. The offering price and the share count are both still blank, so this is not a pricing amendment. The company is not yet listed.
One of the things newly disclosed in the amendment is borrowing. And on both loans, the lender sits on the founder’s side.
The first is an agreement signed on July 29, which the prospectus calls the 2026 RP Agreement. The counterparty is Mariner Strategic Investments, LLC, or MSI. The same document describes it as a company controlled by founder Dr. Krishna P. Singh. The loan is capped at $150.0 million. The rate is fixed at 1.0% per month. It is unsecured, and principal together with accrued and unpaid interest falls due six months after the date of the agreement. Anything repaid cannot be borrowed again. The company says it actually drew $60.0 million during July.
To be precise, the borrower is not Holtec Nuclear, the registrant for this offering, but Holtec International. The agreement itself names the borrower that way. Holtec Nuclear was formed on December 16, 2025, and the prospectus says it had no business operations prior to this offering. The business has been carried on by Holtec International, and Holtec Nuclear only comes to operate and control it once the reorganization tied to the listing is complete. The prospectus itself defines “we” as Holtec International and its subsidiaries before that reorganization, and Holtec Nuclear and its subsidiaries after it. What follows uses the term the same way.
The second loan draws on a facility that already existed. In October 2025 the company entered a revolving credit facility with Harbor Associates Limited Partnership, which the prospectus calls the 2025 RP Agreement. The prospectus describes Harbor, too, as an entity owned and controlled by founder Dr. Singh. From that facility, $50.0 million was borrowed in the same month of July. Add the two together and July alone accounts for $110 million. That total is the sum of two figures the prospectus states in separate places.
The terms of the two loans stand in contrast.
The Harbor facility bears, from April 1, 2026, the greater of one-month SOFR plus 1.50% per annum or the applicable federal rate, so it floats. And it is secured. The prospectus says borrowings under it are secured by certain personal assets of Dr. Singh, including $717.0 million held in cash, equity, fixed income investments and private market securities. The new borrowing from MSI, by contrast, is unsecured and fixed at 1.0% per month. In the same month, from the same family side, two loans of different character were drawn.
There is one more thing that happened on the Harbor side. The 2025 RP Agreement facility had been amended during 2026, raised from $100.0 million to $250.0 million. Borrowings outstanding as of June 30 were $125.0 million. The $50.0 million in July brought that to $175.0 million. The prospectus then says this: Harbor adjusted the total availability on the facility to $175.0 million at this time. So at that moment the facility and the amount drawn became exactly the same size. This facility is revolving, and may be borrowed, repaid and re-borrowed. Read as written, though, at that moment there was no unused room left to draw on.
Why borrow from MSI, and on these terms? The amendment does not say. It sets out the terms and stops there. On related-party borrowing in general, however, there is an explanation. In the liquidity section of MD&A, the company includes related-party facilities among its sources of liquidity and says it may use borrowings under its credit facilities to fund capital expenditures before it receives proceeds under the Department of Energy loan guarantee facility.
The original S-1, filed on July 10, contains no such agreement with MSI. The agreement was signed 19 days later.
Our article gave one of its ten questions to the money moving between this family and this company. The personal assets pledged as collateral, the insurance company the founder’s side owns, the export sales commissions. These two loans sit on that line.
What to watch next is clear enough. The MSI loan comes due six months after the date of the agreement. Counting six months from July 29 gives January 29, 2027. It can also be prepaid at any time, in whole or in part, without premium or penalty. And the two parties can extend that date by written agreement. The company itself says it believes its existing liquidity and capital resources will be sufficient to meet its anticipated operating, capital expenditure and working capital requirements for at least the next twelve months. It also says its future liquidity requirements may be greater than currently anticipated, in which case it may seek additional funding. The next amendment, or the first quarterly report after listing, is where to look for how these two loans are handled.
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This article is based on the amendment to Form S-1 that Holtec Nuclear Corporation filed with the SEC (Amendment No. 1, accession 0001193125-26-361496), on Exhibit 10.14 to that filing, the Related Party Loan Agreement, and on the original S-1 filed July 10, 2026 (accession 0001193125-26-301023). The EDGAR filing header shows the amendment was accepted at 20:04:37 Eastern time on August 21, 2026, with a Filing Date of August 24. The SEC places filings begun after 17:30 Eastern on the next business day’s index, so those two dates are not in conflict. The $110 million total for July is calculated from two amounts the prospectus states in separate places. The January 29, 2027 maturity is arrived at by counting six months from the effective date, as the agreement defines it. The statement that no unused room remained under the Harbor facility is a conclusion from reading the disclosure as written, not something the prospectus itself says. The company was not listed as of the date of this article, and both the offering price and the share count are blank in the prospectus. Nothing here is a recommendation to buy or sell any security.