Intellia Therapeutics, Inc.

Forward-looking Information

This Quarterly Report on Form 10-Q contains forward-looking statements which are made pursuant to the safe harbor provisions of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). These statements may be identified by such forward-looking terminology as “may,” “should,” “expects,” “intends,” “plans,” “anticipates,” “believes,” “estimates,” “predicts,” “potential,” “continue” or the negative of these terms or other comparable terminology. Our forward-looking statements are based on a series of expectations, assumptions, estimates and projections about our company, are not guarantees of future results or performance and involve substantial risks and uncertainty. We may not actually achieve the plans, intentions or expectations disclosed in these forward-looking statements. Actual results or events could differ materially from the plans, intentions and expectations disclosed in these forward-looking statements. Our business and our forward-looking statements involve substantial known and unknown risks and uncertainties, including the risks and uncertainties inherent in our statements regarding:

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All of our express or implied forward-looking statements are as of the date of this Quarterly Report on Form 10-Q only. In each case, actual results may differ materially from such forward-looking information. We can give no assurance that such expectations or forward-looking statements will prove to be correct. An occurrence of or any material adverse change in one or more of the risk factors or risks and uncertainties referred to in this Quarterly Report on Form 10-Q or included in our other public disclosures or our other periodic reports or other documents or filings filed with or furnished to the Securities and Exchange Commission (the “SEC”) could materially and adversely affect our business, prospects, financial condition and results of operations. Except as required by law, we do not undertake or plan to update or revise any such forward-looking statements to reflect actual results, changes in plans, assumptions, estimates or projections or other circumstances affecting such forward-looking statements occurring after the date of this Quarterly Report on Form 10-Q, even if such results, changes or circumstances make it clear that any forward-looking information will not be realized. Any public statements or disclosures by us following this Quarterly Report on Form 10-Q that modify or impact any of the forward-looking statements contained in this Quarterly Report on Form 10-Q will be deemed to modify or supersede such statements in this Quarterly Report on Form 10-Q.

Management Overview

Intellia Therapeutics, Inc. (“we,” “us,” “our,” “Intellia,” or the “Company”) is a leading biopharmaceutical company, focused on revolutionizing medicine leveraging CRISPR gene editing and other core technologies. Our mission is to transform the lives of people with severe diseases by developing and commercializing potentially curative treatments. With deep scientific, technical and clinical development experience, we aim to reset the standard for medicine by durably treating the root causes of disease.

For over a decade, we have applied our proprietary technologies and expertise, including CRISPR-based gene editing technologies, oligonucleotides, and lipid nanoparticles (“LNPs”), to develop novel, first-in-class product candidates. This includes the development of lonvoguran ziclumeran (“lonvo-z,” previously referred to as NTLA-2002) for the treatment of hereditary angioedema (“HAE”) and nexiguran ziclumeran (“nex-z,” previously referred to as NTLA-2001) for the treatment of transthyretin (“ATTR”) amyloidosis. These lead product candidates are the first in vivo genome editing product candidates to advance into Phase 3 clinical development. These systemically administered CRISPR-based candidates are designed to address diseases with high unmet need with a single intravenous (“IV”) infusion that is administered in an outpatient setting. In April 2026, we reported positive topline data from the global Phase 3 HAELO clinical trial of lonvo-z in HAE, and preparations are underway for the planned commercial launch of lonvo-z in the first half of 2027, if approved.

Our management’s discussion and analysis of our financial condition and results of operations are based upon our unaudited condensed consolidated financial statements included in this Quarterly Report on Form 10-Q, which have been prepared by us in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) for interim periods and with Regulation S-X, promulgated under the Securities Exchange Act of 1934, as amended. This discussion and analysis should be read in conjunction with the unaudited condensed consolidated financial statements and the notes thereto included elsewhere in this Quarterly Report on Form 10-Q as well as in conjunction with the audited financial statements and notes thereto included in our Annual Report on Form 10-K (“Annual Report”) for the year ended December 31, 2025.

Our strategy is to (1) advance the clinical development of our lead CRISPR-based product candidates, (2) build and leverage a fully integrated commercial-stage infrastructure, (3) expand our pipeline utilizing our expertise and proprietary technologies, and (4) collaborate with partners to expand our technology reach and maximize our return on investment. All of our revenue to date has been collaboration revenue. Since our inception and through June 30, 2026, we have funded our operations through our initial public offering (“IPO”), private placements, follow-on public offerings, at-the-market offerings, the sale of convertible preferred stock and through our collaboration agreements.

Our Pipeline

We are the first company to advance in vivo genome editing product candidates into Phase 3 clinical development. These candidates are being developed for patients with HAE and ATTR amyloidosis. Our research efforts focus on pursuing additional targets within the liver and expanding our targets and delivery technology for diseases outside the liver.

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Hereditary Angioedema (“HAE”) Program

Lonvo-z is a wholly owned, investigational in vivo CRISPR-based therapeutic candidate designed to inactivate the kallikrein B1 (“KLKB1”) gene in the liver, drive consistent, deep and potentially lifelong reduction in kallikrein levels, and dramatically reduce or eliminate HAE attacks via a one-time treatment. It also aims to eliminate the significant burdens associated with currently available HAE therapies.

Lonvo-z Clinical Program

HAELO is our Phase 3 clinical study of lonvo-z for the treatment of HAE. HAELO is a global, randomized, double-blind, placebo-controlled study that was designed to evaluate the efficacy and safety of lonvo-z planned for 60 adults with Type I or Type II HAE. Patients were randomized 2:1 to receive a single 50 mg infusion of lonvo-z or placebo. Patients randomized to the placebo arm are eligible for optional crossover to lonvo-z at week 28. The primary endpoint is the number of HAE attacks from week 5 through week 28. In January 2025, we announced that the first patient had been dosed in the global Phase 3 study. In September 2025, we announced that enrollment was completed. In total, 80 patients were enrolled in the trial and received a one-time 50 mg dose of lonvo-z or placebo.

In April 2026, we announced positive topline results from the global Phase 3 HAELO clinical trial. In June 2026, we reported additional data in a late-breaking oral session at the European Academy of Allergy & Clinical Immunology Annual Congress 2026 and in a manuscript published in the New England Journal of Medicine. The trial met its primary endpoint. For the six-month efficacy evaluation period (weeks 5 to 28), a one-time infusion of lonvo-z reduced attacks by 87% versus placebo, with a mean monthly attack rate of 0.26 in the lonvo-z arm compared with 2.10 in the placebo arm (p<0.0001). The trial met all of its key secondary endpoints with statistical significance (p<0.0001). These included: 62% of patients were entirely attack free and therapy free in the lonvo-z arm for the six-month efficacy evaluation period, compared with 11% of patients in the placebo arm; the mean monthly rate of attacks requiring on-demand treatment was 0.19 in the lonvo-z arm for the six-month efficacy evaluation period, compared with 1.79 in the placebo arm; the mean monthly rate of moderate/severe attacks was 0.11 in the lonvo-z arm for the six-month efficacy evaluation period, compared with 1.23 in the placebo arm; and the change in Angioedema Quality of Life (“AE-QoL”) total score was -23.51 in the lonvo-z arm from baseline to Week 28, compared with -6.47 in the placebo arm. Additionally, all patients in the lonvo-z arm experienced attack-rate reductions from baseline compared with weeks 5 to 28; attack-rate reductions were observed for all evaluated subgroups; and all patients who received lonvo-z at baseline or in crossover after week 28 remained free from long-term prophylaxis therapy as of the February 10, 2026 data cutoff. Favorable safety and tolerability data were observed for lonvo-z. The most common treatment emergent adverse events (“TEAEs”) were infusion-related reactions, headache, fatigue, back pain, and upper respiratory tract infection. All TEAEs reported were mild or moderate (Grade 1 or Grade 2) and there were no serious adverse events observed in the lonvo-z arm.

We significantly advanced our launch readiness activities in recent months, including finalizing our field medical, reimbursement and strategic accounts teams and engaging with HAE treatment centers around the U.S. In April 2026, we announced the initiation of a rolling biologics license application (“BLA”) to the U.S. Food and Drug Administration (“FDA”) for lonvo-z. We expect the FDA to accept our submission in the second half of 2026. If approved, we plan to launch lonvo-z commercially in the first half of 2027.

Transthyretin (“ATTR”) Amyloidosis Program

Nex-z is an investigational in vivo CRISPR-based therapeutic candidate designed to inactivate the TTR gene in the liver, thereby preventing the production of TTR protein. Delivered with our in vivo LNP technology, nex-z offers the possibility of halting and reversing the disease by driving a deep, consistent and potentially lifelong reduction in TTR protein after a one-time treatment.

Nex-z Clinical Program

Intellia has advanced enrollment in its MAGNITUDE and MAGNITUDE-2 Phase 3 clinical trials of nex-z in ATTR amyloidosis with cardiomyopathy (“ATTR-CM”) and hereditary ATTR amyloidosis with polyneuropathy (“ATTRv-PN”), respectively. We remain on track to complete patient enrollment in MAGNITUDE-2 in the second half of 2026.

On October 29, 2025, the FDA placed a clinical hold on the investigational new drug (“IND”) applications for the MAGNITUDE and MAGNITUDE-2 Phase 3 clinical trials for patients with ATTR-CM and ATTRv-PN, respectively. This action followed a report of Grade 4 liver transaminase elevations and increased total bilirubin in a patient who was dosed with nex-z in the MAGNITUDE trial. This patient passed away on November 5, 2025. It was reported by the principal investigator that the patient

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died due to septic shock secondary to a perforated duodenal ulcer. The patient’s complicated clinical course also included acute liver injury and its treatment with corticosteroids. An autopsy report supported the clinical diagnoses.

In January 2026, we announced that the FDA lifted the clinical hold on the IND for MAGNITUDE-2 for patients with ATTRv-PN. In March 2026, we announced that the FDA lifted the clinical hold on the IND for MAGNITUDE for patients with ATTR-CM. Patient enrollment is advancing in both trials.

In August 2026 we announced that, together with Regeneron Pharmaceuticals, Inc. (“Regeneron”) and other external experts, we recently conducted a comprehensive genomic analysis of more than 600 patient samples across nex-z clinical trials. The analysis revealed that the highest observed liver transaminase elevations were in patients carrying one specific human leukocyte antigen (“HLA”) allele. As we engage with the FDA regarding this finding, we will provide HLA genotyping results to investigators and patients enrolled or entering screening in the ongoing nex-z Phase 3 trials.

Nex-z is the subject of a co-development and co-promotion (“Co/Co”) agreement (the “ATTR Co/Co”) with Regeneron, for which we are the clinical and commercial lead party and Regeneron is the participating party. Regeneron shares in approximately 25% of worldwide development costs and commercial profits for the ATTR program and has an option to enter into a co-promotion agreement for the U.S. commercialization.

ATTR Amyloidosis with Cardiomyopathy (“ATTR-CM”):

In 2024, we initiated the pivotal Phase 3 MAGNITUDE trial. The MAGNITUDE trial is an international, randomized, double-blind, placebo-controlled study to evaluate the efficacy and safety of nex-z in approximately 1,200 adults with ATTR-CM. The primary endpoint of the study is a composite of cardiovascular (“CV”)-related mortality and events. Patients are randomized 2:1 nex-z:placebo, with a single 55 mg infusion of nex-z administered.

In November 2025, we presented positive follow-up data from the ongoing Phase 1 clinical trial of nex-z in patients with ATTR-CM at the American Heart Association Scientific Sessions. The data were as of an August 23, 2025, data cut-off date. Across all 36 patients, a one-time treatment of nex-z led to consistent and durable reductions in serum TTR, regardless of baseline levels, through the latest follow-up. Among the nine patients who reached 36 months of follow-up, the mean serum TTR reduction was 87%. Patients dosed with nex-z continued to show evidence of disease stabilization or improvement as evidenced by multiple markers of cardiomyopathy, including N-terminal pro-B-type natriuretic peptide, high sensitivity Troponin T, 6-minute walk test, Kansas City Cardiomyopathy Questionnaire and echocardiographic measures. The most commonly reported treatment-related adverse events were infusion-related reactions (“IRRs”) and transaminase elevations. Additionally, data from a post-hoc analysis was presented from a cohort of 1,792 ATTR-CM patients from the National Amyloidosis Center (“NAC”) who were followed contemporaneously and whose baseline characteristics were matched to those of the Phase 1 nex-z population. The analysis showed patients receiving a one-time treatment with nex-z had an all-cause mortality rate of 3.9 per 100 patient-years, while the matched cohort had an all-cause mortality rate of 12.7 per 100 patient-years. Nex-z was generally well tolerated across all patients in the Phase 1 clinical trial.

Hereditary ATTR Amyloidosis with Polyneuropathy (“ATTRv-PN”):

In November 2024, we announced that the FDA had cleared our nex-z IND application to initiate the MAGNITUDE-2 pivotal Phase 3 trial for ATTRv-PN. MAGNITUDE-2 is an international, randomized, double-blind, placebo-controlled study to evaluate the efficacy and safety of nex-z in 50 adults with ATTRv-PN. Patients will be randomized 1:1 to receive a single 55 mg infusion of nex-z or placebo. Patients randomized to the placebo arm will be eligible for optional crossover to receive nex-z following month 18. The primary endpoints are the change from baseline in modified Neuropathy Impairment Score +7 (mNIS+7) at month 18 and serum TTR at day 29. The mNIS+7 scale is a validated measure specifically designed to assess and quantify polyneuropathy impairment, including muscle weakness, muscle stretch reflexes, sensory loss and autonomic impairment. In April 2025, we announced that the first patient was randomized and dosed with nex-z in the global Phase 3 MAGNITUDE-2 study.

In September 2025, we presented updated data from our Phase 1 clinical trial of nex-z in patients with ATTRv-PN at the 5th International ATTR Amyloidosis Annual Meeting for Patients and Doctors in Baveno, Italy. The results were simultaneously published in the New England Journal of Medicine. Deep, durable and consistent TTR reductions continued to be observed. Across the 33 patients who received a one-time dose of 0.3 mg/kg or higher, the mean serum TTR reduction at 24 months was 92% and among the 12 patients who had reached 36 months of follow-up, the mean serum TTR reduction was 90%. Favorable trends indicating stability or improvement were observed in most patients with ATTRv-PN after a single dose of

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nex-z as evidenced by multiple clinical and biomarker measures, including Neuropathy Impairment Score, modified Neuropathy Impairment Score +7, modified body mass index, Norfolk Quality of Life-Diabetic Neuropathy questionnaire, neurofilament light chain, and polyneuropathy disability score. Nex-z was generally well tolerated as of the data cutoff date across all patients and at all dose levels tested. The most commonly reported treatment-related adverse events were infusion-related reactions, which were mild or moderate and did not result in any discontinuations. As previously reported, three participants had Grade 3 or greater liver enzyme elevations that were not considered serious, were asymptomatic and resolved spontaneously without medical intervention or sequelae.

We remain on track to complete patient enrollment in MAGNITUDE-2 in the second half of 2026.

Collaborations and Other Arrangements

In order to treat—and potentially cure—a broader range of severe diseases, we and our collaboration partners are advancing the development of additional clinical and preclinical product candidates. Throughout our history, we have leveraged collaborations to expand and accelerate the development of product candidates. Our current relationships include our collaboration with Regeneron and other research collaborations focused on the development of product candidates. See Note 7, “Collaborations and Other Arrangements” of our condensed consolidated financial statements appearing elsewhere in this Quarterly Report on Form 10-Q for additional information related to the terms of the agreements between us and our collaborators.

Financial Overview

Collaboration Revenue

Our revenue consists of collaboration revenue, including amounts recognized related to upfront technology access payments for licenses, technology access fees, research materials shipped, research funding and milestone payments earned under our license and collaboration agreements.

Research and Development

Research and development expenses consist of expenses incurred in performing research and development activities, such as compensation and benefits, which includes stock-based compensation, for full-time research and development employees, allocated facility-related expenses, overhead expenses, license and milestone fees, contract research, development and manufacturing services, clinical trial costs and other related costs.

General and Administrative

General and administrative expenses consist primarily of compensation and benefits, including stock-based compensation, for our executive, finance, legal, human resources, business development and support functions. Also included in general and administrative expenses are allocated facility-related costs not otherwise included in research and development expenses, adjustments related to impairment or accelerated amortization of long-lived assets, ongoing expenses related to the buildout of our commercial infrastructure, travel expenses and professional fees for auditing, tax and legal services, including intellectual property-related legal services, and other consulting fees and expenses.

Other Income (Expense), Net

During the three and six months ended June 30, 2026 and 2025, other income (expense), net consists of interest income earned on our cash, cash equivalents, restricted cash equivalents and marketable securities and change in the fair value of our investments.

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Results of Operations

The following discussion of the financial condition and results of operations should be read in conjunction with the accompanying condensed consolidated financial statements and the related footnotes thereto.

Comparison of Three Months Ended June 30, 2026 and 2025

The following table summarizes our results of operations:

Collaboration Revenue

Collaboration revenue decreased by $6.6 million during the three months ended June 30, 2026, as compared to the three months ended June 30, 2025. The decrease in collaboration revenue is primarily due to reductions in revenue under the 2016 Regeneron Agreement and the ATTR Co/Co.

Research and Development

Research and development expenses decreased by $14.4 million during the three months ended June 30, 2026, as compared to the three months ended June 30, 2025.

The following table summarizes our research and development expenses, together with the changes in those items in dollars and the respective percentages of change:

The decrease in research and development expenses for the three months ended June 30, 2026 compared to the three months ended June 30, 2025 was primarily attributable to:

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General and Administrative

General and administrative expenses increased by $10.6 million during the three months ended June 30, 2026, as compared to the three months ended June 30, 2025. This increase is primarily related to increased legal expenses, compensation, and consulting costs associated with the continued buildout of a commercial function.