Welcome to our dedicated page for Lightbridge SEC filings (Ticker: LTBR), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
Lightbridge Corporation filings document the formal disclosure record for an advanced nuclear fuel technology company developing Lightbridge Fuel™ for water-cooled reactors and small modular reactors. Its 8-K filings report financial results, business updates, R&D activity, patent and testing developments, and material events related to financing, compensation arrangements, and corporate governance.
Proxy materials describe annual meeting proposals, board and executive compensation matters, equity incentive plans, and shareholder voting procedures. Registration-related and prospectus supplement filings disclose common-stock offering capacity under shelf and at-the-market programs, while results disclosures furnished on Form 8-K frame liquidity, operating losses, research spending, and capital-structure activity tied to nuclear fuel development.
Lightbridge Corporation filed a Post-Effective Amendment converting its shelf registration to a non-automatic Form S-3 that registers up to $350,000,000 of securities, including an at-the-market program for up to $150,000,000 of common stock under a Sales Agreement with Jefferies LLC.
The at-the-market prospectus supplement states $19,143,332 of common stock has been issued and sold under the Sales Agreement as of the date of this prospectus. Shares outstanding were 34,152,062 as of February 20, 2026. The registration includes common stock, preferred stock (including depositary shares), debt securities, warrants, purchase contracts and units.
Lightbridge Corporation is a pre-revenue nuclear technology company developing Lightbridge Fuel™, an advanced metallic fuel for water‑cooled reactors that aims to boost output by up to 30% in new reactors and about 17% in existing pressurized water reactors while improving safety and proliferation resistance.
The company targets lead test rods and assemblies in commercial reactors in the early‑ to mid‑2030s and initial reload batch orders in the late 2030s, supported by long‑dated R&D partnerships with Idaho National Laboratory and membership in the DOE HALEU Consortium. Lightbridge held about $201.9 million in cash and cash equivalents as of December 31, 2025, after raising roughly $182.0 million via at‑the‑market equity programs during 2025, but expects substantial additional capital needs to fund an estimated $19.5 million of INL project obligations and broader development, fabrication, and licensing efforts.
Lightbridge Corporation files a post-effective amendment registering $350,000,000 of securities under a shelf registration, with an accompanying $150,000,000 “at the market” common stock prospectus supplement included in that shelf.
The amendment states the change was filed because the company expects it will no longer be a "well-known seasoned issuer" when it files its Form 10-K for the fiscal year ended December 31, 2025. The Sales Agreement with Jefferies LLC dated June 5, 2025 covers the at-the-market program; the filing discloses $19,143,332 of common stock has been issued and sold under that agreement as of the date of this prospectus. Shares outstanding were 34,152,062 as of February 20, 2026.
Lightbridge Corporation reported fiscal 2025 results showing a larger net loss as it accelerated investment in its advanced nuclear fuel program while significantly strengthening its balance sheet. The company generated no revenue and recorded a net loss of $19.6 million, compared with $11.8 million in 2024.
General and administrative expenses rose to $14.0 million and research and development spending doubled to $9.2 million, reflecting higher stock-based compensation, employee costs, project labor at Idaho National Laboratory, and IT for fuel modeling. These investments expanded the company’s fuel development activities.
Lightbridge ended 2025 with cash and cash equivalents of $201.9 million, up sharply from $40.0 million a year earlier, after raising $176.2 million from equity financing and option exercises. Working capital reached about $201.7 million, total assets were $203.8 million, and liabilities were only $0.8 million, giving the company substantial financial resources to continue its development efforts.
State Street Corporation has filed a Schedule 13G reporting a passive ownership stake in Lightbridge Corp. The firm reports beneficial ownership of 1,847,661 shares of Lightbridge common stock, representing 5.7% of the outstanding class.
State Street reports no sole voting or dispositive power, with 1,817,181 shares subject to shared voting power and 1,847,661 shares subject to shared dispositive power. The filing states the shares were acquired and are held in the ordinary course of business and not for the purpose of changing or influencing control of Lightbridge.
Lightbridge Corporation executive Andrey Mushakov, EVP of Nuclear Operations, reported planned sales of company stock. On January 29, 2026, he sold an aggregate of 30,289 shares of Lightbridge common stock under a Rule 10b5-1 trading plan adopted on September 30, 2025.
The sales occurred in three transactions at weighted average prices of $17.475 for 2,533 shares, $16.544 for 24,929 shares, and $16.033 for 2,827 shares, leaving him with 389,082 shares of common stock held directly. He also holds a fully vested employee stock option for 11,351 shares at an exercise price of $18.48, expiring on November 9, 2026.
Lightbridge Corporation has a notice of proposed sale under Rule 144 for up to 30,289 shares of common stock, to be sold through Jefferies LLC. The filing lists an aggregate market value of $502,015.94 for these shares and notes 32,371,338 shares outstanding.
The shares are planned to be sold on or about January 29, 2026 on the Nasdaq. The notice details that the securities were acquired over time through restricted stock vesting and the company’s employee stock purchase plan from 2006 through 2024.
BlackRock, Inc. has filed a Schedule 13G reporting a passive ownership stake in Lightbridge Corp common stock. BlackRock reports beneficial ownership of 1,998,562 shares, representing 6.2% of the outstanding common stock as of the event date of December 31, 2025. The filing states that these securities are held in the ordinary course of business and were not acquired, and are not held, for the purpose of changing or influencing control of Lightbridge. BlackRock has sole voting power over 1,972,999 shares and sole dispositive power over 1,998,562 shares, with no shared voting or dispositive power.
Lightbridge Corporation CFO Larry Goldman reported a planned sale of company stock under a Rule 10b5-1 trading plan. On January 14 and 15, 2026, he sold a total of 8,869 shares of Lightbridge common stock in open market transactions. The January 14 sale covered 2,519 shares at a weighted average price of $18.0001 per share, with trades ranging from $18.00 to $18.0012. The January 15 sale covered 6,350 shares at a weighted average price of $18.0694 per share, with trades ranging from $18.00 to $18.30.
After these sales, Goldman beneficially owned 328,840 shares of common stock directly. He also held 4,469 employee stock options with an exercise price of $18.48 per share, which were fully vested as of the report date.