X-Energy, Inc. SEC Filings

X-Energy, Inc. director Michael J. Wallace filed an amended Form 3 to correct his previously reported holdings. The amendment notes that 50,250 shares of Class A common stock and 16,750 shares of restricted stock were omitted from his original Form 3 and a subsequent Form 4. The filing also adds 18,997 previously omitted stock options.

After these corrections, Wallace is shown holding 137,161 shares of Class A common stock directly and a stock option tied to 23,834 shares of Class A common stock at an exercise price of $23.00 per share. The option is vested as to 17,874 underlying shares and is scheduled to vest further as to 1,210 shares on September 12, 2026, 2,374 shares on January 1, 2027, and 2,376 shares on January 1, 2028.

X-Energy, Inc. insider Kamal Seyed Ghaffarian reported updated holdings and a collateral arrangement involving company stock. One entry shows he directly holds 1,240,543 shares of Class A Common Stock. Another reflects 5,308,515 shares held indirectly through several entities he controls.

Within these indirect holdings, IBX, LLC perfected a security interest in 279,438 shares to secure a non‑negotiable promissory note owed to IBX, LLC by an unaffiliated third party. The outstanding note balance was $3,727,858 as of June 12, 2026 and increases by $1,414 per day, plus collection costs. Using the June 12, 2026 NASDAQ closing price of $18.59 per share, 200,530 shares would have satisfied the note on that date, though the actual number of shares ultimately transferred to cover the debt may differ, up to the 279,438 pledged shares. The filing does not show any open‑market share purchases or sales by Dr. Ghaffarian.

X-Energy, Inc. reported strong top-line growth but a much larger loss for the quarter ended March 31, 2026. Total revenues and grant income rose to $43.4 million from $20.8 million a year earlier, driven mainly by U.S. government-funded engineering and development work under the Advanced Reactor Demonstration Program.

The company posted a net loss of $166.2 million versus $10.2 million in the prior-year quarter, largely due to a $108.9 million mark‑to‑market loss on warrant liabilities. Operating expenses more than doubled to $109.5 million as X‑Energy ramped direct project costs and corporate overhead.

Cash, cash equivalents and restricted cash fell to $228.3 million from $462.6 million at year-end, after $67.3 million of operating cash use and $166.0 million of investing outflows, including heavy capital spending on fuel fabrication and reactor test facilities. Subsequent to quarter-end, X‑Energy closed an IPO of 50.9 million Class A shares, raising approximately $1.1 billion in net proceeds.

X-Energy, Inc. reported strong top-line growth and a much larger loss for the first quarter of 2026 while also highlighting its new public-company status and upcoming lock-up expiration. Total revenues and grant income were $43.4 million, up 109% from $20.8 million a year earlier, driven mainly by higher activity under its Advanced Reactor Demonstration Program agreement with the U.S. Department of Energy. Operating expenses rose faster, up 133% to $109.5 million, leading to a net loss of $166.2 million versus $10.2 million in the prior-year quarter, including a large non-cash loss tied to warrant liabilities.

Cash used in operations was $67.3 million, and cash used in investing reached $166.0 million, reflecting significant capital spending and purchases of investments. As of March 31, 2026, X-Energy held $944.0 million in cash, cash equivalents and investments with no debt, and in April it raised approximately $1.1 billion in net IPO proceeds, bringing liquidity (including IPO proceeds) to about $2.0 billion. The company reported a project pipeline of 144 reactors totaling roughly 11.5 gigawatts electric across the U.S. and U.K., anchored by Dow, Amazon and Centrica. X-Energy also disclosed that IPO lock-up agreements for officers, directors and major holders are expected to end early on September 1, 2026, making those shares eligible for sale subject to trading limitations.

GARCIA LAURA reported acquisition or exercise transactions in this Form 4 filing.

X-Energy, Inc. Chief Accounting Officer Laura Garcia reported receiving a grant of 43,478 shares of Class A common stock in the form of restricted stock units. The award was granted at no cash cost to her and is part of her equity compensation.

The RSUs each represent one share of Class A common stock and vest in three substantially equal annual installments, starting on the first anniversary of the grant date. After this grant, Garcia directly holds 240,300 shares, so this filing reflects a compensation-related equity award rather than an open-market trade.

Gross Daniel Andrew reported acquisition or exercise transactions in this Form 4 filing.

X-Energy, Inc. officer Daniel Andrew Gross reported receiving equity compensation consisting of restricted stock units and stock options. He was granted 246,665 shares of Class A common stock as RSUs at a price of $0.00 per share, reflecting a compensation award rather than an open-market purchase. Following this grant, his direct holdings of common stock total 1,025,183 shares.

Gross also received a grant of 332,615 stock options exercisable for Class A common stock at a strike price of $26.44 per share, with 1,605,770 stock options held after the award. The RSUs and options each vest in four substantially equal annual installments beginning on December 23, 2026, spreading the compensation over several years and linking it to continued service.

X-Energy, Inc. is sharing an investor presentation that explains its advanced small modular reactor (Xe-100) and TRISO-X fuel business model, recent milestones, and growth plans. The company focuses on licensing reactor technology, providing engineering and lifecycle services, and manufacturing nuclear fuel rather than owning plants or taking construction risk.

The presentation highlights a 10-year graphite supply agreement with SGL Carbon exceeding $100M, a ~$1.1B net IPO capital raise, and visibility to about 11.5 gigawatts across 144 planned Xe-100 reactors. Each four-reactor 320 MWe plant is projected to generate roughly $2.4B–$4.7B in lifetime revenue, with estimated gross margins of 30–55%. Management cites a potential ~$2.3T revenue opportunity by 2050 across the U.S., Canada, and U.K. advanced nuclear market.

X-energy describes progress on its TRISO-X fuel facilities in Oak Ridge, including a first-of-a-kind commercial advanced nuclear fuel fabrication plant (TX-1) supported by a roughly $150M DOE tax credit and an NRC Category II license. The company also notes blue-chip relationships with customers such as Dow and Amazon and outlines a strategy to scale from first-of-a-kind projects to broader deployment in the early 2030s.

X-Energy, Inc. received a joint Schedule 13G disclosing beneficial ownership stakes held or reported by related Citadel entities and Mr. Kenneth Griffin. The filing states shares outstanding were 273,442,494 as of April 27, 2026. GFNCI LLC and XERC Holdings report 16,219,322 shares (5.9%) each; Citadel Advisors, Citadel Advisors Holdings LP and Citadel GP LLC report 2,198,811 shares (0.8%) each; Citadel Securities entities report 139,868 shares (0.1%); and Mr. Griffin is reported to beneficially own 18,558,001 shares (6.8%). The filing shows these holdings reflect shared voting and shared dispositive power rather than sole voting or disposal power. The statement is joint and includes organizational and address details for the reporting persons.

X-Energy, Inc. filed a Form 4 identifying three entities — Ares Partners Holdco LLC, Ares X-Energy Holdings LP, and ACIP Investments Pooling LLC - Series 31 — as reporting persons, each described as a "Former 10% Owner". The filing does not report any insider share purchases, sales, derivative exercises, gifts, tax withholdings, or restructurings, as all transaction counts and share amounts are shown as zero.