PSNL

EX-99.1

2 psnl-ex99_1.htm

EX-99.1

EX-99.1

Exhibit 99.1

Personalis Reports Third Quarter Results Reports Q3 clinical test volume of 13,157, clinical revenue of $4.4 million and overall revenue of $25.6 million

FREMONT, Calif. – November 4, 2026 – Personalis, Inc. (Nasdaq: PSNL), a leader in advanced genomics for precision oncology, today reported financial and operational results for the third quarter ended September 30, 2026.

Recent Strategic and Operational Highlights

● Launched NeXT Personal® Real-Time Variant Tracker™: Commercially launched optional Real-Time Variant Tracker supplemental results in the NeXT Personal molecular residual disease (MRD) test report, which identify clinically relevant resistance and therapeutically targetable variants over time, during NeXT Personal testing.

● Reported pre-interim results from prospective Triple Negative Breast Cancer (TNBC) B-STRONGER-1 study: Personalis’ study is a multi-site, prospective study evaluating ctDNA dynamics in stage I-III TNBC patients receiving neoadjuvant therapy (NAT). Results showed high sensitivity, achieving a 96% ctDNA detection rate at baseline with 83.3% of positive detections at T1 in the ultrasensitive range below 100 PPM. Also, the results showed an 82% ctDNA clearance rate following two cycles of NAT.

● Demonstrated the value of ultrasensitive ctDNA for predicting early immunotherapy response: A study conducted with The University of California, San Diego (UCSD) for 55 patients across 8 metastatic cancer types showed that an ultrasensitive assay may provide resolution in cases of heterogeneous response to stratify patients with radiographically stable disease into distinct risk groups, and dynamic ctDNA monitoring during immunotherapy provides lead time for identifying patients at high risk of progression.

Third Quarter 2026 Financial Results Compared with Third Quarter 2025

● Quarterly Revenue: Total revenue of $25.6 million compared with $14.5 million, primarily driven by growth in clinical test revenue, as well as core revenue from increased population sequencing and higher pharma testing services.

● Clinical Revenue: Clinical test revenue of $4.4 million compared with $0.4 million, resulting from the increase in test volume and also a full quarter of Medicare covered IO test volume, in addition to revenue from breast and lung cancer covered tests; delivered 13,157 clinical tests compared with 4,388.

● Core Revenue Streams: Revenue from pharma testing services and all other customers totaled $17.2 million compared with $13.2 million. Revenue from population sequencing (the VA MVP) totaled $4.0 million compared with $0.2 million.

● Cash Position: Ended the quarter with approximately $190.6 million in cash, cash equivalents, and short-term investments.

1

CEO Commentary

"These results reflect the strength of our team’s execution and commitment to helping transform the active management of cancer through more informed care," said Chris Hall, Chief Executive Officer of Personalis. “Combining with Tempus gives us the scale, complementary capabilities and resources to accelerate innovation and deliver even greater value to patients, clinicians, and biopharma partners.”

Full Year 2026 Outlook

As a result of the announcement on July 20, 2026, that Personalis and Tempus AI, Inc. have entered into an Agreement and Plan of Merger, Personalis will no longer provide financial guidance or conduct a quarterly earnings conference call.

About Personalis, Inc.

At Personalis, we are transforming the active management of cancer through breakthrough personalized testing. We aim to drive a new paradigm for cancer management, guiding care throughout the patient journey. Our highly sensitive assays combine tumor-and-normal profiling with proprietary algorithms to deliver advanced insights even as cancer evolves over time. Our products are designed to detect minimal residual disease (MRD) and recurrence at the earliest timepoints, enable the selection of targeted therapies based on ultra-comprehensive genomic profiling, and enhance biomarker strategy for drug development. Personalis is based in Fremont, California. To learn more, visit www.personalis.com and connect with us on LinkedIn and X (Twitter).

Forward-Looking Statements

This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements include all statements that are not historical facts and can generally be identified by terms such as “anticipate,” “estimate,” “expect,” “if,” “may,” “future,” “will” or similar expressions. These statements include statements relating to: the attributes, advantages, capabilities, sensitivity, availability and clinical relevance of the NeXT Personal test and the potential impact or expected benefits of the Personalis’ published data and presentations and statements regarding the proposed transaction between Personalis and Tempus AI, Inc. (Tempus) and th

SEC.gov | Request Rate Threshold Exceeded

U.S. Securities and Exchange Commission

You’ve Exceeded the SEC’s Traffic Limit

Your request rate has exceeded the SEC’s maximum allowable requests per second. Your access to SEC.gov will be limited for 10 minutes.

Current guidelines limit each user to a total of no more than 10 requests per second, regardless of the number of machines used to submit requests. To ensure that SEC.gov remains available to all users, we reserve the right to block IP addresses that submit excessive requests.

The block will be lifted automatically by waiting 10 minutes. Continuing to exceed the SEC’s maximum allowable request rate during the time-out period will extend the duration of the time-out period. To ensure fair access for all users, please reduce the rate of your requests and visit SEC.gov again after the 10 minute time-out period has passed.

For best practices on efficiently downloading information from SEC.gov, including the latest EDGAR filings, visit sec.gov/developer. You can also sign up for email updates on the SEC open data program, including best practices that make it more efficient to download data, and SEC.gov enhancements that may impact scripted downloading processes. For more information, contact opendata@sec.gov.

For more information, please see the SEC’s Web Site Privacy and Security Policy. Thank you for your interest in the U.S. Securities and Exchange Commission.

Reference ID: 0.e618d017.1786388808.cf9d4fc7

More Information

Internet Security Policy

By using this site, you are agreeing to security monitoring and auditing. For security purposes, and to ensure that the public service remains available to users, this government computer system employs programs to monitor network traffic to identify unauthorized attempts to upload or change information or to otherwise cause damage, including attempts to deny service to users.

Unauthorized attempts to upload information and/or change information on any portion of this site are strictly prohibited and are subject to prosecution under the Computer Fraud and Abuse Act of 1986 and the National Information Infrastructure Protection Act of 1996 (see Title 18 U.S.C. §§ 1001 and 1030).

To ensure our website performs well for all users, the SEC monitors the frequency of requests for SEC.gov content to ensure automated searches do not impact the ability of others to access SEC.gov content. We reserve the right to block IP addresses that submit excessive requests. Current guidelines limit users to a total of no more than 10 requests per second, regardless of the number of machines used to submit requests.

If a user or application submits more than 10 requests per second, further requests from the IP address(es) may be limited for a brief period. Once the rate of requests has dropped below the threshold for 10 minutes, the user may resume accessing content on SEC.gov. This SEC practice is designed to limit excessive automated searches on SEC.gov and is not intended or expected to impact individuals browsing the SEC.gov website.

Note that this policy may change as the SEC manages SEC.gov to ensure that the website performs efficiently and remains available to all users.

Note: We do not offer technical support for developing or debugging scripted downloading processes.

EX-99.1

2 d68794dex991.htm

EX-99.1

EX-99.1

Exhibit 99.1

Tempus to Acquire Personalis, More Tightly Integrating Molecular Residual Disease (MRD) into Its AI-Enabled Precision Oncology Platform

Acquisition brings together Personalis’ MRD technology with Tempus’ commercial scale, multimodal data and AI platform to advance cancer monitoring, deepen insights and accelerate growth

Expands Tempus’ reach across the cancer care continuum and accelerates access to industry-leading technology within the rapidly emerging MRD market, a $20 billion opportunity

FREMONT, Calif., July 20, 2026 — Personalis, Inc. (Nasdaq: PSNL), a leader in advanced genomics for precision oncology, today announced that it has entered into a definitive agreement to be acquired by Tempus AI, Inc. (NASDAQ: TEM), a technology company leading the adoption of AI to advance precision medicine and patient care. The acquisition will expand Tempus capabilities in minimal residual disease (MRD) and enhance its ability to support patients from diagnosis and treatment selection, to recurrence and monitoring.

Under the terms of the agreement, Personalis shareholders will receive consideration of $16.25 per share of common stock, representing a total enterprise value of $1.5 billion, net

of Tempus’ existing ownership interest.

The complementary acquisition builds on the companies’ existing partnership, established in November 2023, through which Tempus invested in Personalis and commercializes the company’s NeXT Personal® MRD test. It brings together Tempus’ multimodal data platform, AI capabilities and precision oncology portfolio with Personalis’ industry-leading tumor-informed MRD technology to expand access to longitudinal monitoring, create new opportunities to advance biomarker discovery and enhance personalized cancer care.

“MRD is a large and rapidly growing market with the potential to truly transform how cancer patients are monitored, helping clinicians make faster and more informed decisions when cancer recurs,” said Eric Lefkofsky, CEO of Tempus. “Through our existing collaboration with Personalis, we have already demonstrated the strength of combining highly sensitive MRD technology with our commercial infrastructure. With clinical adoption and reimbursement momentum building, we are collectively well positioned to capture this opportunity, which makes this acquisition particularly exciting.”

With approximately 2.1 million new cancer diagnoses expected in the U.S. this year1 and more people living longer after a cancer diagnosis, the need for long-term monitoring is critical and continues to grow. Personalis’ ultrasensitive MRD tests are uniquely positioned to support this essential need. NeXT Personal has industry-leading sensitivity for detecting small traces of circulating tumor DNA, enabling tracking of cancer treatment response, detection of residual cancer and early detection of recurrence. With Medicare coverage in three indications and additional coverage anticipated, Personalis continues to demonstrate leadership in monitoring treatment response and cancer recurrence.

1

https://www.cancer.org/content/dam/cancer-org/research/cancer-facts-and-statistics/annual-cancer-facts-and-figures/2026/2026-cancer-facts-and-figures.pdf

“We believe this transaction represents an exciting next chapter for Personalis,” said Chris Hall, CEO of Personalis. “Combining with Tempus gives us the scale, complementary capabilities and resources to accelerate innovation and deliver even greater value to patients, clinicians and biopharma partners. After conducting an exhaustive process, we are confident Tempus’ offer provides the most value to our shareholders and the fastest path to bringing Personalis’ industry-leading tests to patients suffering from cancer.”

Transaction Terms

Under the terms of the agreement Tempus will acquire all outstanding shares of Personalis not already owned by Tempus at a price of $16.25 per common share, representing a 6% premium to Friday’s closing price and a 28% premium to unaffected 30-day VWAP. Consideration will be structured as a 100% stock transaction with Tempus having the option to elect payment in cash at Tempus’ discretion, capped at 50% of the consideration paid. Personalis shareholders will receive a floating exchange ratio of Tempus AI common stock for each share of Personalis common stock they own at closing, subject to a maximum exchange ratio of 0.3356, which shall be finalized closer to the closing of the transaction. Cash consideration will be financed with cash on hand and borrowings under the Company’s then existing credit facilities.

The closing is expected in late 2026 or early 2027, and is subject to Personalis’ shareholder approval, as well as receipt of applicable regulatory approvals and other customary closing conditions. The transaction was approved by both companies’ board of directors.

Personalis delivered preliminary revenue in Q2 of $22.4 million. In the quarter, they delivered 10