# EDGAR Filing Document

**Accession Number:** 0001808805
**File Stem:** 0001808805-25-000077
**Filing Date:** 2025-10
**Character Count:** 17626
**Document Hash:** 88887b6d528832d58c41feb3bd99d899
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001808805-25-000077.hdr.sgml**: 20251028

**ACCESSION NUMBER**: 0001808805-25-000077

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 13

**CONFORMED PERIOD OF REPORT**: 20251028

**ITEM INFORMATION**: Results of Operations and Financial Condition

**ITEM INFORMATION**: Financial Statements and Exhibits

**FILED AS OF DATE**: 20251028

**DATE AS OF CHANGE**: 20251027

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Nautilus Biotechnology, Inc.
- **CENTRAL INDEX KEY:** 0001808805
- **STANDARD INDUSTRIAL CLASSIFICATION:** LABORATORY ANALYTICAL INSTRUMENTS [3826]
- **ORGANIZATION NAME:** 08 Industrial Applications and Services
- **EIN:** 981541723
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-39434
- **FILM NUMBER:** 251420826

**BUSINESS ADDRESS:**
- **STREET 1:** 2701 EASTLAKE AVE EAST
- **CITY:** SEATTLE
- **STATE:** WA
- **ZIP:** 98102
- **BUSINESS PHONE:** 206-333-2001

**MAIL ADDRESS:**
- **STREET 1:** 2701 EASTLAKE AVE EAST
- **CITY:** SEATTLE
- **STATE:** WA
- **ZIP:** 98102

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** ARYA Sciences Acquisition Corp III
- **DATE OF NAME CHANGE:** 20200408

?xml version='1.0' encoding='ASCII'? naut-20251028

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**FORM 8-K**

**CURRENT REPORT**

**Pursuant to Section 13 or 15(d) of the**

**Securities Exchange Act of 1934**

**Date of Report (Date of earliest event reported): October 28, 2025**

**NAUTILUS BIOTECHNOLOGY, INC.**

(Exact name of registrant as specified in its charter)

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| | | |
|:---|:---|:---|
| **Delaware**<br>(State or other jurisdiction<br>of incorporation) | **001-39434** <br>(Commission File Number) | **98-1541723**<br>(I.R.S. Employer<br>Identification No.) |

---

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| | |
|:---|:---|
| **2701 Eastlake Avenue East**<br>**Seattle, Washington**<br>(Address of principal executive offices) | **98102**<br>(Zip code) |

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**(206) 333-2001**

(Registrant's telephone number, including area code)

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

□ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

□ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

□ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

□ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

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| | | |
|:---|:---|:---|
| Title of each class | Trading Symbol(s) | Name of each exchange on which registered |
| **Common Stock, par value $0.0001 per share** | **NAUT** | **The Nasdaq Stock Market LLC** |

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Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ⌧

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. □

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**Item 2.02.&nbsp;&nbsp;&nbsp;&nbsp;Results of Operations and Financial Condition.** 

On October 28, 2025, Nautilus Biotechnology, Inc. (the "Company") issued a press release reporting its financial results for the quarter ended September 30, 2025. A copy of the press release is furnished herewith as Exhibit 99.1 to this Current Report on Form 8-K.

The information furnished in this Current Report under Item 2.02 and the exhibit attached hereto shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

**Item 9.01.&nbsp;&nbsp;&nbsp;&nbsp;Financial Statements and Exhibits.** 

**(d)&nbsp;&nbsp;&nbsp;&nbsp;Exhibits** 

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| | |
|:---|:---|
| **Exhibit**<br>**Number** | **Description** |
| <u>[99.1](exhibit991-q3258xkearnings.htm)</u> | <u>[Press Release dated](exhibit991-q3258xkearnings.htm)[October 28](exhibit991-q3258xkearnings.htm)[, 2025.](exhibit991-q3258xkearnings.htm)</u> |
| 104 | Cover page Interactive Data File (embedded with the Inline XBRL document) |

---

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**SIGNATURES**

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Dated: October 28, 2025

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| | |
|:---|:---|
| **NAUTILUS BIOTECHNOLOGY, INC.** | **NAUTILUS BIOTECHNOLOGY, INC.** |
| By: | /s/ Sujal Patel |
| Name: | Sujal Patel |
| Title: | Chief Executive Officer |

---

## Exhibit 99.1

**Exhibit 99.1**

**Nautilus Biotechnology Reports Third Quarter 2025 Financial Results**

**SEATTLE, WA,** October 28, 2025 – Nautilus Biotechnology, Inc. (NASDAQ: NAUT; or "Nautilus"), a company pioneering a single-molecule proteome analysis platform, today reported financial results for the third quarter ended September 30, 2025.

**Third Quarter 2025 Business Highlights**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Continued progress was made in processing Tau proteoform samples from collaborators in support of our goals of product validation and growing our publications. We expect to share this data at the upcoming World HUPO conference.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Further progress was made in the development of a new broadscale assay format, which is intended to support our forthcoming commercial launch in late 2026.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• We expect to launch our early access program with Tau proteoforms in the first half of 2026.

"In Q3, Nautilus maintained disciplined execution and delivered meaningful progress across our platform, strategic collaborations, and operational initiatives—all aligned with our path toward commercialization in late 2026," said Sujal Patel, CEO of Nautilus Biotechnology. "Our near-term focus is on the successful launch of our early access program, beginning with Tau proteoforms in the first half of 2026 and expanding to broadscale capabilities later in the year. These milestones are critical steps toward enabling customers to experience the value of our technology and advancing toward full commercial availability."

**Third Quarter 2025 Financial Results**

Operating expenses were $15.5 million for the third quarter of 2025, a 19% decrease compared to $19.1 million for the corresponding prior year period. The decrease in operating expenses is attributable to operating efficiencies, lower development-related costs, and decreased salaries, related benefits and stock-based compensation.

Net loss was $13.6 million for the third quarter of 2025, as compared to the net loss of $16.4 million for the corresponding prior year period.

Cash, cash equivalents, and investments were $168.5 million as of September 30, 2025.

**Webcast and Conference Call Information**

Nautilus will host a conference call to discuss the third quarter 2025 financial results, business developments and outlook before market open on Tuesday, October 28, 2025, at 5:30 AM Pacific Time / 8:30 AM Eastern Time. Live audio of the webcast will be available on the "Investors" section of the company website at: <u>www.nautilus.bio</u>.

**About Nautilus Biotechnology, Inc.**

With its corporate headquarters in Seattle, Washington and its research and development headquarters in San Carlos, California, Nautilus is a development stage life sciences company working to create a platform technology for quantifying and unlocking the complexity of the proteome. Nautilus' mission is to transform the field of proteomics by democratizing access to the proteome and enabling fundamental advancements across human health and medicine. To learn more about Nautilus, visit www.nautilus.bio

**Special Note Regarding Forward-Looking Statements**

This press release contains forward-looking statements within the meaning of federal securities laws. Forward-looking statements in this press release include, but are not limited to, statements regarding Nautilus' expectations regarding the company's business operations, financial performance and results of operations; expectations

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regarding operating expenses and cash runway; expectations with respect to any revenue timing or projections; expectations with respect to the development required for and the timing of the launch of Nautilus' product platform and full commercial availability; the functionality and performance of Nautilus' product platform, its potential impact on providing proteome or proteoform access, pharmaceutical development and drug discovery, expanding research horizons, and enabling scientific explorations and discovery; expectations regarding platform specifications required by potential customers and partners and the timeline for adoption of Nautilus' platform by researchers; and the present and future capabilities and limitations of emerging proteomics technologies. These statements are based on numerous assumptions concerning the development of Nautilus' products, target markets, and other current and emerging proteomics technologies, and involve substantial risks, uncertainties and other factors that may cause actual results to be materially different from the information expressed or implied by these forward-looking statements. Risks and uncertainties that could materially affect the accuracy of Nautilus' assumptions and its ability to achieve the forward-looking statements set forth in this press release include (without limitation) the following: Nautilus' product platform is not yet commercially available and remains subject to significant scientific and technical development, which is inherently challenging and difficult to predict, particularly with respect to highly novel and complex products such as those being developed by Nautilus. Even if our development efforts are successful, our product platform will require substantial validation of its functionality and utility in life science research. In the course of Nautilus' scientific and technical development and associated product validation and commercialization, we may experience material delays as a result of unanticipated events. We cannot provide any guarantee or assurance with respect to the outcome of our development, collaboration, and commercialization initiatives or with respect to their associated timelines. For a more detailed description of additional risks and uncertainties facing Nautilus and its development efforts, investors should refer to the information under the caption "Risk Factors" in our Annual Report on Form 10-K as well as in our Quarterly Report on Form 10-Q to be filed for the quarter ended September 30, 2025 and our other filings with the SEC. The forward-looking statements in this press release are as of the date of this press release. Except as otherwise required by applicable law, Nautilus disclaims any duty to update any forward-looking statements. You should, therefore, not rely on these forward-looking statements as representing our views as of any date subsequent to the date of this press release.

**Disclosure Information** 

Nautilus uses filings with the Securities and Exchange Commission, its website (www.nautilus.bio), press releases, public conference calls, public webcasts, and its social media accounts as means of disclosing material non-public information and for complying with Regulation FD. Therefore, Nautilus encourages investors, the media, and others interested in Nautilus to review the information it makes public in these locations, as such information could be deemed to be material information.

**Media Contact**

press@nautilus.bio

**Investor Contact**

investorrelations@nautilus.bio

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**Nautilus Biotechnology, Inc.** <br>**Condensed Consolidated Balance Sheets** <br>**As of September 30, 2025 and December 31, 2024 (Unaudited)**<br>

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| | | |
|:---|:---|:---|
| *(in thousands)* | **September 30, 2025** | **December 31, 2024** |
| **Assets** |  |  |
| Current assets: |  |  |
| &nbsp;&nbsp;Cash and cash equivalents | $23875 | $27646 |
| &nbsp;&nbsp;Short-term investments | 107552 | 102247 |
| &nbsp;&nbsp;Prepaid expenses and other current assets | 2898 | 2933 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total current assets | 134325 | 132826 |
| Property and equipment, net | 3624 | 4076 |
| Operating lease right-of-use assets | 24727 | 28256 |
| Long-term investments | 37059 | 76405 |
| Other long-term assets | 1180 | 1180 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total assets | $200915 | $242743 |
| **Liabilities and Stockholders' Equity** |  |  |
| Current liabilities: |  |  |
| &nbsp;&nbsp;Accounts payable | $893 | $987 |
| &nbsp;&nbsp;Accrued expenses and other liabilities | 3880 | 2548 |
| &nbsp;&nbsp;Current portion of operating lease liabilities | 4209 | 4097 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total current liabilities | 8982 | 7632 |
| &nbsp;&nbsp;Operating lease liabilities, net of current portion | 22794 | 26381 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total liabilities | 31776 | 34013 |
| Stockholders' equity: |  |  |
| &nbsp;&nbsp;Preferred stock |  |  |
| &nbsp;&nbsp;Common stock | 13 | 13 |
| &nbsp;&nbsp;Additional paid-in capital | 487165 | 481679 |
| &nbsp;&nbsp;Accumulated other comprehensive income | 200 | 57 |
| &nbsp;&nbsp;Accumulated deficit | (318239) | (273019) |
| &nbsp;&nbsp;&nbsp;&nbsp;Total stockholders' equity | 169139 | 208730 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total liabilities and stockholders' equity | $200915 | $242743 |

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**Nautilus Biotechnology, Inc.** <br>**Condensed Consolidated Statements of Operations** <br>**Three and Nine Months Ended September 30, 2025 and 2024 (Unaudited)**<br>

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| | | | | |
|:---|:---|:---|:---|:---|
| | **Three Months Ended September 30,** | **Three Months Ended September 30,** | **Nine Months Ended September 30,** | **Nine Months Ended September 30,** |
| *(in thousands, except share and per share data)* | **2025** | **2024** | **2025** | **2024** |
| Operating expenses: |  |  |  |  |
| &nbsp;&nbsp;Research and development | $9605 | $12288 | $31535 | $37654 |
| &nbsp;&nbsp;General and administrative | 5867 | 6812 | 19878 | 23842 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total operating expenses | 15472 | 19100 | 51413 | 61496 |
| Other income (expense): |  |  |  |  |
| &nbsp;&nbsp;Interest income | 1903 | 2674 | 6214 | 8349 |
| &nbsp;&nbsp;Other expense | (5) | (20) | (21) | (39) |
| &nbsp;&nbsp;&nbsp;&nbsp;Total other income | $1898 | $2654 | $6193 | $8310 |
| Net loss | $(13574) | $(16446) | $(45220) | $(53186) |
| Net loss per share attributable to common stockholders, basic and diluted | $(0.11) | $(0.13) | $(0.36) | $(0.42) |
| Weighted-average shares used in computing net loss per share attributable to common stockholders, basic and diluted | 126305122 | 125452572 | 126218587 | 125302440 |

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**Nautilus Biotechnology, Inc.** <br>**Consolidated Statements of Cash Flows** <br>**Nine Months Ended September 30, 2025 and 2024 (Unaudited)**<br>

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| | | |
|:---|:---|:---|
| | **Nine Months Ended September 30,** | **Nine Months Ended September 30,** |
| *(in thousands)* | **2025** | **2024** |
| **Cash flows from operating activities** |  |  |
| Net loss | $(45220) | $(53186) |
| Adjustments to reconcile net loss to net cash used in operating activities |  |  |
| &nbsp;&nbsp;Stock-based compensation expense | 5373 | 9577 |
| &nbsp;&nbsp;Amortization of operating lease right-of-use assets | 3529 | 3257 |
| &nbsp;&nbsp;Depreciation | 1348 | 1543 |
| &nbsp;&nbsp;Amortization (accretion) of premium (discount) on securities, net | (1286) | (2176) |
| &nbsp;&nbsp;Changes in operating assets and liabilities: |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Prepaid expenses and other assets | 149 | (26) |
| &nbsp;&nbsp;&nbsp;&nbsp;Accounts payable | (71) | (35) |
| &nbsp;&nbsp;&nbsp;&nbsp;Accrued expenses and other liabilities | 1332 | (729) |
| &nbsp;&nbsp;&nbsp;&nbsp;Operating lease liabilities | (3475) | (3061) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Net cash used in operating activities | (38321) | (44836) |
| **Cash flows from investing activities** |  |  |
| Proceeds from maturities of securities | 74241 | 90410 |
| Purchases of securities | (38771) | (59398) |
| Purchases of property and equipment | (1033) | (1868) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Net cash provided by investing activities | 34437 | 29144 |
| **Cash flows from financing activities** |  |  |
| Proceeds from exercise of stock options | 26 | 415 |
| Proceeds from issuance of common stock under employee stock purchase plan | 87 | 289 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Net cash provided by financing activities | 113 | 704 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Net decrease in cash, cash equivalents and restricted cash | (3771) | (14988) |
| Cash, cash equivalents and restricted cash at beginning of period | 28648 | 20399 |
| Cash, cash equivalents and restricted cash at end of period | $24877 | $5411 |

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