Welcome to our dedicated page for Aura Biosciences SEC filings (Ticker: AURA), 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.
This page compiles U.S. Securities and Exchange Commission (SEC) filings for Aura Biosciences, Inc. (NASDAQ: AURA), a Boston-based clinical-stage biotechnology company developing precision therapies for solid tumors that aim to preserve organ function. These regulatory documents provide detailed insight into AURA’s financial condition, clinical development plans, governance, and capital markets activity.
Among the most frequently referenced filings are Aura’s Form 10-K annual reports and Form 10-Q quarterly reports, which describe the company’s business, risk factors, research and development focus on bel-sar (AU-011), and operating expenses tied to its global Phase 3 CoMpass trial in early or early-stage choroidal melanoma, additional ocular oncology programs, and non-muscle invasive bladder cancer. Investors can also review Form 8-K current reports, such as those filed on dates when Aura announces quarterly results or updates its corporate presentation, to see how the company communicates material events and financial updates.
For users interested in ownership and governance, SEC filings provide information on matters submitted to stockholder votes, including director elections and auditor ratification, as illustrated by Aura’s Form 8-K reporting results of its annual meeting of stockholders. Registration statements and prospectus supplements related to public offerings of common stock and warrants detail how the company raises capital to fund its clinical programs and general corporate purposes.
Stock Titan’s platform enhances these filings with AI-powered summaries that highlight key points from lengthy reports, helping readers quickly understand clinical priorities, cash runway disclosures, and risk factor discussions without reading every page. Real-time updates from EDGAR ensure new AURA filings appear promptly, while structured access to forms such as 10-K, 10-Q, 8-K, and registration statements allows investors to navigate Aura Biosciences’ regulatory history efficiently.
de los Pinos Elisabet reported open-market sale transactions in a Form 4 filing for AURA. The filing lists transactions totaling 47,648 shares at a weighted average price of $5.06 per share. Following the reported transactions, holdings were 409,815 shares.
Aura Biosciences, Inc. received an updated Schedule 13G/A from a group of Frazier Life Sciences funds and related entities reporting passive ownership of its common stock.
Frazier Life Sciences Public Fund, L.P. directly holds 4,032,060 shares of Aura common stock, representing 6.3% of the class based on 63,503,269 shares outstanding as of November 10, 2025. Other affiliated Frazier funds directly hold additional stakes of 128,520 shares (0.2%), 342,210 shares (0.5%), and 597,210 shares (0.9%), with voting and investment power allocated through various Delaware limited partnerships and limited liability companies.
The filing notes that these ownership figures exclude prefunded warrants. The funds hold warrants to purchase 1,008,016, 32,130, 85,552, and 149,302 additional shares of common stock, each subject to a 9.99% beneficial ownership limitation, which prevents exercise if it would push the holder above that ownership threshold. The reporting group certifies that the securities are not held for the purpose of changing or influencing control of Aura Biosciences.
Aura Biosciences insider Amy Elazzouzi has filed a Form 144 indicating an intention to sell up to 1,581 shares of the company’s common stock through broker Morgan Stanley Smith Barney LLC on or about 01/20/2026. The filing lists an aggregate market value of $7,683.66 for this planned sale, with 63,503,269 shares of common stock outstanding and the stock listed on Nasdaq.
The securities to be sold were originally acquired as a restricted stock unit award granted on 01/19/2023 under Aura Biosciences’ 2021 Stock Option and Incentive Plan, in an amount of 2,844 shares. Over the past three months, the same seller has sold 896 shares of common stock for gross proceeds of $5,689.60. By signing the notice, the seller represents they are not aware of undisclosed material adverse information about Aura Biosciences.
Aura Biosciences insider Elisabet de los Pinos has filed a Rule 144 notice to sell 16,928 shares of common stock through Morgan Stanley Smith Barney LLC on or about 01/20/2026, with an indicated aggregate market value of $82,234.36 on Nasdaq. These shares relate to a restricted stock unit award of 30,469 shares granted on 01/19/2023 under the company’s 2021 Stock Option and Incentive Plan. The notice also discloses that 9,049 shares of common stock were sold in the past three months for $57,461.15. Aura Biosciences had 63,503,269 shares of common stock outstanding, providing scale for the planned sale.
Amy Elazzouzi, Senior Vice President, Finance of Aura Biosciences, Inc. (AURA), reported an insider transaction involving company common stock. On January 20, 2026, she sold 1,581 shares of common stock at $4.86 per share. According to the disclosure, these shares were sold to cover tax withholding obligations arising from the vesting of restricted stock units, and the sales were automatic rather than discretionary. After this transaction, she beneficially owned 84,081 shares of Aura Biosciences common stock, held directly.
Aura Biosciences, Inc. director and President & Chief Executive Officer Elisabet de los Pinos reported an automatic sale of common stock to cover taxes on vesting restricted stock units. On January 20, 2026, she sold 16,928 shares of common stock at a weighted average price of $4.86 per share in multiple trades within a price range of $4.73 to $4.86. After this transaction, she beneficially owned 457,463 shares of Aura Biosciences common stock directly. An additional 127,763 shares were reported as indirectly owned through the Elisabet de los Pinos Revocable Trust, of which she is a trustee. The filing notes that the sales were solely to satisfy tax withholding obligations and were not made at her discretion.
Aura Biosciences, Inc. (AURA) reported an insider tax-related stock sale by its Chief Medical Officer. On 11/17/2025, the officer sold 17,109 shares of common stock at a weighted average price of $5.42 per share, with individual sale prices ranging from $5.42 to $5.44. The filing explains that these shares were sold automatically to cover tax withholding obligations tied to the vesting of restricted stock units, and the transactions were not at the officer’s discretion. After these sales, the reporting person beneficially owned 252,685 shares of Aura Biosciences common stock in direct ownership.
Aura Biosciences reported Q3 2025 results, highlighting ongoing late-stage development of bel-sar and continued investment in R&D. Net loss was $26.1 million (basic and diluted loss per share $0.40) on total operating expenses of $27.9 million, driven by research and development of $22.2 million and general and administrative of $5.7 million. Other income was $1.8 million.
Liquidity remained solid with $47.6 million in cash and cash equivalents and $114.3 million in marketable securities as of September 30, 2025. Total assets were $190.0 million and stockholders’ equity was $156.7 million. Shares outstanding were 62,985,569 at quarter-end; 63,503,269 as of November 10, 2025.
Year to date, operating cash use was $64.3 million, offset by financing inflows including the May 2025 follow-on that raised approximately $69.9 million net (common shares, pre-funded warrants, and accompanying warrants) and Q3 activity under the ATM. Management expects current cash and marketable securities to fund operations for at least 12 months from issuance. The Phase 3 CoMpass trial in early choroidal melanoma is ongoing, with enrollment targeted for 2026 and a 15‑month primary endpoint readout planned for Q4 2027.
Aura Biosciences announced its financial results for the quarter ended September 30, 2025, via a press release furnished as Exhibit 99.1. The company also updated its corporate presentation for investor and analyst meetings, filed as Exhibit 99.2. The press release is furnished under Item 2.02, while the presentation is filed under Item 8.01.
The materials include forward-looking statements covering development timelines, regulatory interactions, manufacturing, commercialization plans, market opportunities, and financing needs. The company notes an expected cash runway into the first half of 2027, with outcomes subject to clinical, regulatory, and operational risks described in its risk factor disclosures.
Aura Biosciences (AURA) filed a Form 4 disclosing that its Senior Vice President, Finance sold 896 shares of common stock at $6.35 on 10/29/2025. According to the filing, the sale was made to cover tax withholding obligations arising from the vesting of restricted stock units and was automatic, not at the reporting person’s discretion.
Following the transaction, the officer directly holds 85,662 shares of Aura Biosciences common stock.