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Press Release · BillionToOne, Inc.

BillionToOne Reports Third Quarter 2026 Results and Raises 2026 Revenue Guidance

NASDAQBLLN

Distributed by Finance Private · Originally issued via SEC EDGAR

MENLO PARK, CA, November 4, 2026 — BillionToOne, Inc. (NASDAQ: BLLN), a next-generation molecular diagnostics company with a mission to create powerful and accurate tests that are accessible to all, today reported its financial results for the third quarter ended September 30, 2026 and raised guidance for full year 2026.

Financial Highlights:

●Total revenue of $123.0 million in the third quarter of 2026, compared to $83.5 million in the third quarter of 2025, an increase of 47%.

●Prenatal clinical testing revenue was $104.3 million in the third quarter of 2026, an increase of 41% from the third quarter of 2025.

●Oncology clinical testing revenue was $17.1 million in the third quarter of 2026, 96% higher than the $8.7 million reported in the third quarter of 2025.

●Gross profit margin was 71% in the third quarter of 2026, compared to 70% in the third quarter of 2025, a one percentage-point increase year-over-year.

●206,000 tests delivered in the third quarter of 2026, compared to 165,000 tests delivered in the third quarter of 2025, an increase of 25%.

●Income from operations of $11.0 million in the third quarter of 2026, compared to income from operations of $9.6 million in the third quarter of 2025.

●Free cash flow, defined as cash flow from operations minus capital expenditures, was $8.6 million in the third quarter of 2026.

●Raising 2026 full year revenue guidance to be in a range of $460 million to $470 million, which represents 51% to 54% growth over 2025.

●Expects to operate the business such that it will continue to generate profitability similar to current levels, even with significant continued investments.

Recent Operating Highlights:

●Today, we announced the upcoming launch of Northstar Clear, a tissue-free MRD test for patients with all solid tumors, which will be commercially available on December 15, 2026. Its pan-cancer, blood-only design makes it available on day one for all solid tumors, and initial data in colorectal cancer will show head-to-head performance against a tumor-informed assay.

●In October 2026, we announced peer-reviewed data published in The Journal of Liquid Biopsy from the first head-to-head comparison of Northstar Response with the most widely used tumor-informed assay in patients on active treatment for advanced cancer. The two assays agreed on the direction of ctDNA change in 94% of sequential pairs (67 of 71), and in all four divergent cases clinical records supported Northstar Response’s findings.

●In August 2026, we announced peer-reviewed data published in The Green Journal (Obstetrics & Gynecology) validating Unity Fetal Risk Screen as a first-line prenatal screen. The study is the first and largest prospective study of Unity Fetal Risk Screen in its intended-use population and was conducted in collaboration with nine U.S. institutions, demonstrating 94.4% sensitivity and 99.5% specificity.

“Our third quarter was another period of strong execution,” said Dr. Oguzhan Atay, Co-Founder and CEO of BillionToOne. “We delivered rapid growth with continued GAAP profitability, and more clinicians are

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choosing our tests in both prenatal and oncology. This quarter we also strengthened the clinical evidence behind our platform. Published data validated Unity Fetal Risk Screen as a first-line prenatal screen, and Northstar Response delivered strong results in the first head-to-head study of its kind. I am also pleased to announce that next month, we plan to launch Northstar Clear, our MRD test. Overall, we are proud of our performance so far in 2026 and believe we are still in the early chapters of what our platform can achieve.”

Three Months Ended
September 30, (Unaudited)
Nine Months Ended
September 30, (Unaudited)
20262025%20262025%
Revenue ($ in millions)
Prenatal$104.3 $74.1 41 %$295.1 $191.0 54 %
Oncology$17.1 $8.7 96 %$41.4 $15.8 162 %
Clinical trial support and other services$1.6 $0.8 115 %$4.3 $2.2 92 %
Total Revenue$123.0 $83.5 47 %$340.8 $209.1 63 %
Note: Numbers may not add due to rounding
Three Months Ended
September 30, (Unaudited)
Nine Months Ended
September 30, (Unaudited)
20262025%20262025%
Total tests accessioned207,000 163,000 27 %593,000 448,000 32 %
Total tests delivered206,000 165,000 25 %590,000 441,000 34 %
Overall ASP$589 $501 18 %$571 $469 22 %

Third Quarter 2026 Financial Results

Total revenue was $123.0 million in the third quarter of 2026 compared to $83.5 million in the third quarter of 2025, an increase of 47%. The increase in total revenue was driven by a 25% increase in the number of total tests delivered and an 18% increase in Overall ASP. Both prenatal and oncology delivered strong test volume growth year-over-year.

Gross profit was $87.1 million in the third quarter of 2026, compared to $58.4 million in the third quarter of 2025, representing a gross margin of 71% in the third quarter of 2026 and 70% in the third quarter of 2025. An increase in Overall ASP drove the improvement in gross profit margin compared to the third quarter of 2025. Overall cost-per-test increased slightly in the third quarter of 2026 compared to last year. The increase was driven by the faster growth of our oncology products, which have higher costs per test, and a slight increase in our prenatal cost per test, partially offset by improvements in cost-per-test for both of our oncology products.

Total operating expenses were $76.1 million in the third quarter of 2026, compared to $48.8 million in the third quarter of 2025, an increase of 56%.

Income from operations was $11.0 million in the third quarter of 2026, compared to income from operations of $9.6 million in the third quarter of 2025. Operating margin was 9% in the third quarter of 2026.

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Net income in the third quarter of 2026 was $17.4 million, or $0.32 per diluted share, compared to net income of $1.5 million, or $0.10 per diluted share, in the third quarter of 2025.

Financial Outlook

BillionToOne now expects full year 2026 total revenue of $460.0 million to $470.0 million, representing growth of 51% to 54% compared to full year 2025. This compares to the company's previous guidance of $450.0 million to $465.0 million.

BillionToOne also expects to operate the business such that it will continue to generate profitability similar to current levels, even with significant continued investments.

Webcast and Conference Call Information

BillionToOne will host a conference call today, November 4, 2026, at 1:30pm Pacific Time / 4:30pm Eastern Time. Investors interested in listening to the conference call are required to register online. A live and archived webcast of the event for interested listeners can be accessed at

https://investors.billiontoone.com/.

About BillionToOne

Headquartered in Menlo Park, California, BillionToOne is a molecular diagnostics company with a mission to create powerful and accurate tests that are accessible to all. The company's patented Quantitative Counting Templates™ (QCT™) molecular counting platform is the only multiplex technology that can accurately count DNA molecules at the single-molecule level.

Forward-Looking Statements

This press release contains certain forward-looking statements within the meaning of federal securities laws. These forward-looking statements generally are identified by the words “believe,” “project,” “expect,” “anticipate,” “estimate,” “intend,” “strategy,” “future,” “opportunity,” “plan,” “may,” “should,” “will,” “would,” “will be,” “will continue,” “will likely result,” and similar expressions. Forward-looking statements are predictions, projections and other statements about future events that are based on current expectations and assumptions and, as a result, are subject to risks and uncertainties. Forward-looking statements in this press release include, but are not limited to, statements regarding revenue, income and other financial information for the full year of 2026. These statements are based on management’s current expectations, forecasts and assumptions, and actual outcomes and results could differ materially from these statements due to a number of factors, some of which are beyond BillionToOne’s control. These and additional risks and uncertainties that could affect BillionToOne’s financial and operating results and cause actual results to differ materially from those indicated by the forward-looking statements made in this press release. These risks and uncertainties include those discussed under the captions “Risk Factors” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and elsewhere in BillionToOne’s most recently filed quarterly report on Form 10-Q, the annual report on Form 10-K and other filings BillionToOne makes with the Securities and Exchange Commission from time to time. The forward-looking statements in this press release are based on information available to BillionToOne as of the date hereof, and BillionToOne disclaims any obligation to update any forward-looking statements provided to reflect any change in its expectations or any change in events, conditions, or circumstances on which any such statement is based, except as required by law. These forward-looking statements should not be relied upon as representing BillionToOne’s views as of any date subsequent to the date of this press release.

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Non-GAAP financial measures

We use certain non-GAAP financial measures to supplement our unaudited financial results, which are presented in accordance with GAAP. These non-GAAP financial measures include EBITDA, adjusted EBITDA and free cash flow. By excluding the impact of certain items that we believe do not directly reflect our underlying operations, we are of the opinion that EBITDA, adjusted EBITDA and free cash flow provide meaningful supplemental information regarding our performance. Accordingly, we believe these non-GAAP financial measures are useful to investors and others because they allow for additional information with respect to financial measures used by management in its financial and operational decision-making and forecasting. These metrics also provide investors and other users of our financial information with additional tools to compare business performance across companies and periods, while eliminating the effects of items that may vary for different companies for reasons unrelated to core operating performance. However, there are a number of limitations related to the use of non-GAAP financial measures, and these non-GAAP measures should be considered in addition to, not as a substitute for or in isolation from, our financial results prepared in accordance with GAAP. Other companies, including companies in our industry, may calculate these non-GAAP financial measures differently or not at all, which reduces their usefulness as comparative measures. A reconciliation between GAAP and non-GAAP financial information is provided immediately following the financial tables. A reconciliation of the forecasted range for adjusted EBITDA for the full year 2026 is not included in this release due to the number of variables in the projected range and because we are currently unable to quantify accurately certain amounts that would be required to be included in the U.S. GAAP measure or the individual adjustments for such reconciliation.

EBITDA

We define EBITDA as net income (loss) adjusted for income taxes, interest income, interest expense, and depreciation and amortization expense.

Adjusted EBITDA

We define Adjusted EBITDA as net income (loss) adjusted for income taxes, interest income, interest expense, depreciation and amortization expense, and certain other items which include significant non-cash items and events that are highly variable, significant in size, and that we do not believe are indicative of ongoing or future business operations, which include: stock-based compensation expense; change in fair value of term loan; and change in fair value of warrant liabilities.

Free Cash Flow

We define Free Cash Flow as net cash provided by operating activities adjusted for purchases of property and equipment.

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BillionToOne, Inc.

Statements of Operations and Comprehensive Income (Loss)

(in thousands, except per share amounts, unaudited)

Three Months Ended
September 30,
Nine Months Ended
September 30,
2026202520262025
Revenue$122,981 $83,523 $340,817 $209,059 
Cost of revenue35,836 25,107 97,469 69,205 
Gross profit87,145 58,416 243,348 139,854 
Operating expenses:
Research and development20,216 12,953 52,223 35,134 
Selling, general and administrative55,906 35,830 156,765 99,029 
Total operating expenses76,122 48,783 208,988 134,163 
Income from operations11,023 9,633 34,360 5,691 
Other income (expense):
Interest income4,912 1,535 14,251 4,492 
Interest expense(6)(20)(24)(92)
Change in fair value of term loan1,482 (3,936)(5,747)(7,038)
Other income (expense), net(19)(1,630)579 (1,591)
Total other income (expense)6,369 (4,051)9,059 (4,229)
Income before provision for income taxes17,392 5,582 43,419 1,462 
Provision for income taxes1 (129)4 (15)
Net income$17,391 $5,711 $43,415 $1,477 
Less: Net income attributable to participating securities- (4,204)- (1,089)
Net income attributable to common stockholders$17,391 $1,507 $43,415 $388 
Other comprehensive income, net of taxes:
Change in fair value of term loan attributable to instrument‑specific credit risk$(1,069)$- $(1,069)$- 
Other comprehensive loss, net of taxes(1,069)- (1,069)- 
Comprehensive income, net of taxes$16,322 $5,711 $42,346 $1,477 
Net income per share, basic and diluted:
Net income per share, basic$0.37 $0.14 $0.93 $0.04 
Net income per share, diluted$0.32 $0.10 $0.81 $0.03 
Weighted-average shares used in calculating net income per share, basic and diluted:
Weighted-average shares used in calculating net income per share, basic47,271,38310,429,58346,540,72110,376,253
Weighted-average shares used in calculating net income per share, diluted53,732,15815,571,94953,743,73715,117,365

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BillionToOne, Inc.

Balance Sheets

(in thousands, except share amounts, unaudited)

September 30, 2026December 31, 2025
Assets
Current assets:
Cash and cash equivalents$561,512 $495,975 
Accounts receivable88,283 41,617 
Inventories21,891 17,545 
Prepaid expenses and other current assets10,407 5,421 
Total current assets682,093 560,558 
Property and equipment, net26,784 20,361 
Operating lease right-of-use assets, net46,300 46,742 
Other non-current assets5,313 4,993 
Total assets$760,490 $632,654 
Liabilities and stockholders’ equity
Current liabilities:
Accounts payable$10,232 $7,184 
Accrued expenses and other current liabilities15,018 7,247 
Accrued commissions3,465 3,912 
Accrued compensation and employee benefits22,869 12,551 
Common stock warrant liability— 9,282 
Deferred revenue, current1,884 2,188 
Operating lease liabilities, current6,784 5,079 
Financing lease liabilities, current385 519 
Total current liabilities60,637 47,962 
Operating lease liabilities, non-current44,222 45,723 
Financing lease liabilities, non-current75 348 
Deferred revenue, non-current28 1,290 
Long-term debt88,982 57,226 
Total liabilities193,944 152,549 
Stockholders’ equity:
Class A common stock, $0.00001 par value, 800,000,000 shares authorized as of September 30, 2026 and December 31, 2025; 43,128,349 and 41,252,105 shares issued and outstanding as of September 30, 2026 and December 31, 2025, respectively— — 
Class B common stock, $0.00001 par value; 10,000,000 shares authorized as of September 30, 2026 and December 31, 2025; 4,502,650 and 4,552,650 shares issued and outstanding as of September 30, 2026 and December 31, 2025, respectively— — 
Additional paid-in capital800,739 756,644 
Accumulated other comprehensive loss(2,861)(1,792)
Accumulated deficit(231,332)(274,747)
Total stockholders’ equity566,546 480,105 
Total liabilities and stockholders’ equity$760,490 $632,654 

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BillionToOne, Inc.

Statements of Cash Flows

(in thousands, unaudited)

Nine Months Ended September 30,
20262025
Cash flows from operating activities:
Net income$43,415 $1,477 
Adjustments to reconcile net income to net cash provided by operating activities:
Stock-based compensation24,430 9,581 
Depreciation and amortization5,540 5,232 
Amortization of operating right-of-use assets4,432 3,715 
Loss on disposal of fixed assets82 7 
Change in fair value of common stock warrant liability(62)1,409 
Change in fair value of redeemable convertible preferred stock warrant liability- 176 
Change in fair value of term loan687 3,505 
Changes in operating assets and liabilities:
Accounts receivable(46,666)(9,937)
Inventories(4,346)(8,656)
Prepaid expenses and other current assets(4,903)(1,727)
Other non-current assets(320)(62)
Accounts payable4,025 3,047 
Accrued expenses and other current liabilities7,871 3,972 
Accrued commissions(447)166 
Accrued compensation and employee benefits8,727 5,268 
Deferred revenue(1,566)(123)
Operating lease liabilities(3,786)(3,247)
Net cash provided by operating activities37,113 13,803 
Cash flows from investing activities:
Purchases of property and equipment(12,466)(7,344)
Net cash used in investing activities(12,466)(7,344)

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BillionToOne, Inc.

Statements of Cash Flows

(in thousands, unaudited)

Nine Months Ended September 30,
20262025
Cash flows from financing activities:
Proceeds from issuance of debt30,000 - 
Principal payments on finance lease liabilities(407)(1,449)
Payment of deferred offering costs(504)(2,516)
Proceeds from exercise of stock options12,236 1,181 
Taxes paid related to net share settlement of equity awards(435)- 
Net cash provided by (used in) financing activities40,890 (2,784)
Net increase in cash and cash equivalents65,537 3,675 
Cash and cash equivalents at beginning of period495,975 191,477 
Cash and cash equivalents at end of period$561,512 $195,152 
Supplemental cash flow disclosure:
Cash payments for interest$5,084 $3,626 
Cash paid for income taxes$393 $460 
Supplemental cash flow information and non-cash investing and financing activities:
Purchases of property and equipment in accounts payable and accrued expenses and other current liabilities$1,970 $500 
Deferred offering costs in accounts payable and accrued expenses and other current liabilities$- $1,144 
Right-of-use assets obtained in exchange for new operating lease liabilities$4,034 $- 
Cash paid for amounts included in the measurement of operating lease liabilities$7,135 $6,594 
Net exercise of Class A common stock warrants$9,220 $- 
Operating cash flows from financing leases (interest paid)$24 $89 
Exercise of stock options for which cash had not been received$86 $- 

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BillionToOne, Inc.

Reconciliation of Net Income (Loss) to EBITDA

Three Months Ended
September 30,
Nine Months Ended
September 30,
2026202520262025
Net income$17,391 $5,711 $43,415 $1,477 
Provision for income taxes1 (129)4 (15)
Interest (income)(4,912)(1,535)(14,251)(4,492)
Interest expense6 20 24 92 
Depreciation and amortization1,973 1,692 5,540 5,232 
EBITDA$14,459 $5,759 $34,732 $2,294 

Reconciliation of Net Income (Loss) to Adjusted EBITDA

(in thousands, unaudited)

Three Months Ended
September 30,
Nine Months Ended
September 30,
2026202520262025
Net income$17,391 $5,711 $43,415 $1,477 
Provision for income taxes1 (129)4 (15)
Interest (income)(4,912)(1,535)(14,251)(4,492)
Interest expense6 20 24 92 
Depreciation and amortization1,973 1,692 5,540 5,232 
Stock-based compensation expense9,703 4,475 24,430 9,581 
Change in fair value of term loan(1,482)3,936 5,747 7,038 
Change in fair value of warrant liabilities- 1,627 (62)1,585 
Adjusted EBITDA$22,680 $15,797 $64,847 $20,498 

Reconciliation of Free Cash Flow to Net Cash Provided by Operating Activities

(in thousands, unaudited)

Three Months Ended
September 30,
Nine Months Ended
September 30,
2026202520262025
Net cash provided by operating activities$12,547 $9,996 $37,113 $13,803 
Purchases of property and equipment(3,946)(2,123)(12,466)(7,344)
Free cash flow$8,601 $7,873 $24,647 $6,459 

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Investor Contact

[email protected]

Media Contact
[email protected]

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