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 executive vice president of nuclear operations Andrey Mushakov reported a tax-related share withholding. On December 4, 2025, 11,936 shares of Lightbridge common stock were withheld at $17.79 per share to cover taxes upon vesting of restricted stock awards, and he beneficially owns 427,475 shares directly after this transaction. The filing notes that no shares were sold. He also holds fully vested employee stock options exercisable at $18.48 for 11,351 shares of common stock, expiring on November 9, 2026.
Lightbridge Corporation (LTBR) reported insider activity by its CFO on a Form 4. On 11/20/2025, 7,048 shares of common stock were withheld to cover taxes upon vesting of restricted stock awards at a price of $14.53 per share, and no shares were sold in that tax withholding transaction. On the same date, the CFO sold 4,527 shares of common stock at a weighted average price of $15.22 per share, executed under a pre-arranged Rule 10b5-1 trading plan adopted on March 7, 2025.
After these transactions, the CFO beneficially owned 325,511 shares of Lightbridge common stock directly. The filing also reports a fully vested employee stock option to purchase 4,469 shares of common stock at an exercise price of $18.48 per share, expiring on 11/09/2026.
Lightbridge Corp (LTBR) executive vice president of Nuclear Operations Andrey Mushakov reported an insider equity transaction. On 11/20/2025, 6,730 shares of Lightbridge common stock were withheld at $14.53 per share to cover taxes upon vesting of restricted stock awards, and no shares were sold into the market. After this withholding, Mushakov beneficially owns 388,969 shares of common stock directly. He also holds a fully vested employee stock option to buy 11,351 shares of common stock at an exercise price of $18.48 per share, which expires on 11/09/2026.
Lightbridge Corp (LTBR) President and CEO Seth Grae, who is also a director, reported a routine insider transaction on a Form 4. On 11/20/2025, 10,791 shares of common stock were withheld at $14.53 per share to cover taxes upon the vesting of restricted stock awards, and no shares were sold into the market. Following this transaction, he directly owns 742,525 shares of Lightbridge common stock.
Grae also reports fully vested employee stock options giving the right to buy 7,937 shares at an exercise price of $12.60 per share expiring on 10/26/2027, and 18,199 shares at $18.48 per share expiring on 11/09/2026. These holdings show his continued equity stake and option-based incentives in the company.
Lightbridge Corporation reported Q3 2025 results highlighting a much stronger balance sheet and continued R&D spend. Cash and cash equivalents were $153,330,134 versus $39,990,827 at year‑end 2024, primarily from at‑the‑market (ATM) equity sales. For the quarter, the company recorded an operating loss of $5,204,200, offset by interest income of $1,104,955, resulting in a net loss of $4,099,245 (vs. $2,656,161 a year ago). Shares outstanding were 30,384,981 as of September 30, 2025; 32,371,338 as of October 31, 2025.
Year‑to‑date, Lightbridge sold 9,854,669 shares under its ATM for net proceeds of $120.4 million, including $57.3 million in Q3 from 3,612,403 shares. Q3 expenses included G&A $3,164,343 and R&D $2,039,857, with R&D focused on Idaho National Laboratory (INL). Cash payments under INL umbrella agreements are estimated at ~$6.8 million, with $2.0 million obligations outstanding. Subsequent to quarter‑end, ATM sales added 1,891,613 shares for ~$42.0 million net. The company extended its INL agreements (SPPA to 12 years; CRADA to 2032) and entered a $0.8 million safety analysis software agreement. Authorized common shares increased to 100,000,000 in May 2025.
Lightbridge Corporation furnished a Form 8-K to announce it issued a press release with results for the quarter ended September 30, 2025. The press release is attached as Exhibit 99.1 and dated November 5, 2025.
The company states the information provided under Item 2.02, including the press release, is furnished and not deemed “filed” under the Exchange Act, nor incorporated by reference into Securities Act filings unless expressly referenced. Lightbridge’s common stock trades on Nasdaq under the symbol LTBR.
Lightbridge (LTBR) director reports an open-market sale under a pre-set plan. On 11/03/2025, the reporting person sold 1,948 shares of common stock pursuant to a Rule 10b5-1 trading plan adopted on May 21, 2025. The weighted average sale price was $26.73, with individual trades ranging from $26.2975 to $27.195. Following the transaction, the director beneficially owns 43,501 shares, held directly.
Lightbridge Corporation (LTBR) reported an insider transaction by President and CEO Seth Grae. On 10/15/2025, he exercised 32,296 stock options at $12.60 and sold 32,296 common shares at a $28.07 weighted average price, executed under a Rule 10b5-1 trading plan adopted on September 12, 2024. Following these transactions, he beneficially owns 753,316 common shares directly. Footnotes note the sale prices ranged from $28.00 to $28.28 and that the exercised option was fully vested as of the report date.
Lightbridge Corporation (LTBR) President & CEO and Director Seth Grae reported an insider transaction. On October 13, 2025, he exercised 20,600 stock options at $10.80 per share and sold 20,600 shares at a $26.01 weighted average price under a Rule 10b5-1 trading plan adopted on September 12, 2024.
The sale occurred in multiple trades between $25.80 and $26.58. Following these transactions, Grae beneficially owns 753,316 shares directly. The exercised option (20,600 shares at $10.80) is now fully settled; other vested options remain outstanding with stated exercise prices and expirations.
Director and CEO Seth Grae reported exercising 7,616 employee stock options on 10/10/2025 and immediately selling the same 7,616 shares. The option exercise used a $10.80 exercise price for those options and the subsequent sale generated a weighted average sale price of $25.84 per share, with trade prices reported between $25.80 and $25.92. The transactions were executed under a Rule 10b5-1 trading plan adopted on 09/12/2024, which the filer discloses as the basis for the timing. Following these transactions, the reporting person beneficially owned 760,932 shares before the sale and 753,316 shares after the sale. The filing also lists outstanding employee stock options exercisable at $12.60, $18.48, and $55.20 with various exercisability and expiration dates.