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FDA BTD, trial advances and 2029 cash runway for Relay Therapeutics (Nasdaq: RLAY)

Filing Impact
(Moderate)
Filing Sentiment
(Neutral)
Form Type
8-K

Rhea-AI Filing Summary

Relay Therapeutics reported first quarter 2026 results and highlighted major clinical progress for its lead PI3Kα inhibitor zovegalisib.

Revenue was $3.0 million for Q1 2026 versus $7.7 million a year earlier, while R&D expenses were $70.6 million and G&A expenses $11.0 million. Net loss narrowed to $73.3 million, or $0.41 per share, compared with a net loss of $77.1 million, or $0.46 per share, in Q1 2025.

Cash, cash equivalents and investments rose to $642.1 million as of March 31, 2026, helped by $137.1 million in at-the-market equity proceeds, and are expected to fund operations into 2029. Strategically, zovegalisib received FDA Breakthrough Therapy designation in advanced HR+/HER2- breast cancer, showed 11.1‑month median progression-free survival in a Phase 1/2 trial, and delivered a 44% objective response rate in a triplet regimen in heavily pre-treated patients. The company also initiated a Phase 1/2 trial for RLY‑8161, an NRAS-selective inhibitor, and plans a Phase 3 frontline breast cancer study in early 2027.

Positive

  • FDA Breakthrough Therapy designation for zovegalisib in PIK3CA-mutant, HR+/HER2- advanced breast cancer, supported by 11.1-month median progression-free survival and a 44% objective response rate in heavily pre-treated patients.
  • Strengthened balance sheet and extended runway, with cash, cash equivalents and investments rising to $642.1 million at March 31, 2026, and management expecting funding to cover operating and capital needs into 2029.

Negative

  • Meaningful revenue decline, with Q1 2026 revenue of $3.0 million under the Elevar license agreement compared with $7.7 million in the prior-year quarter, while the company remains in a substantial net loss position.

Insights

BTD for zovegalisib and solid cash runway offset weaker near-term revenue.

Relay Therapeutics combined meaningful clinical milestones with a still-loss-making but better-controlled P&L. Zovegalisib secured FDA Breakthrough Therapy designation in PIK3CA‑mutant HR+/HER2- breast cancer, supported by Phase 1/2 data showing 11.1‑month median progression-free survival and a 44% objective response rate in heavily pre-treated, CDK4/6-experienced patients.

Financially, Q1 2026 revenue fell to $3.0M from $7.7M, but operating expenses declined as G&A dropped to $11.0M and R&D edged down to $70.6M. Net loss improved modestly to $73.3M. Cash, cash equivalents and investments increased to $642.1M, boosted by $137.1M from at-the-market offerings, and management expects this to fund operations into 2029.

Strategic risk now centers on execution of late-stage trials. The ongoing Phase 3 ReDiscover‑2 study in second-line breast cancer and the planned Phase 3 frontline trial expected to start in early 2027, together with the new Phase 1/2 trial for NRAS inhibitor RLY‑8161, will be key determinants of future value once results emerge in subsequent company disclosures.

Item 2.02 Results of Operations and Financial Condition Financial
Disclosure of earnings results, typically an earnings press release or preliminary financials.
Item 9.01 Financial Statements and Exhibits Exhibits
Financial statements, pro forma financial information, and exhibit attachments filed with this report.
Revenue $3.0 million Three months ended March 31, 2026; vs $7.7 million in Q1 2025
Net loss $73.3 million Q1 2026; vs $77.1 million in Q1 2025
Net loss per share $0.41 Basic and diluted for Q1 2026; vs $0.46 in Q1 2025
Cash, cash equivalents and investments $642.1 million As of March 31, 2026; vs $554.5 million at December 31, 2025
ATM equity proceeds $137.1 million Net proceeds from at-the-market offerings during Q1 2026
R&D expenses $70.6 million Three months ended March 31, 2026; vs $73.8 million in Q1 2025
G&A expenses $11.0 million Three months ended March 31, 2026; vs $18.7 million in Q1 2025
Median PFS 11.1 months Zovegalisib doublet in PI3Kα-mutated HR+/HER2- metastatic breast cancer
Breakthrough Therapy designation regulatory
"FDA Breakthrough Therapy designation granted to zovegalisib for PIK3CA-mutant, HR+/HER2- advanced breast cancer"
A breakthrough therapy designation is a regulatory fast-track given to a drug or treatment that shows early signs of providing a major improvement over existing options for a serious condition. Think of it as a VIP lane that can speed up development and more intensive guidance from regulators, which matters to investors because it can shorten time to market, reduce development risk and potentially increase a company’s value — though it does not guarantee approval.
progression-free survival medical
"demonstrating 11.1-month median PFS with similar efficacy in kinase and non-kinase mutations"
Progression-free survival is the length of time during and after a treatment that a patient's disease does not get worse, measured from the start of treatment until the disease shows measurable signs of progression or the patient dies. Investors care because longer progression-free survival in clinical trials often signals that a drug is effective, improving chances of regulatory approval, market adoption, and revenue potential—think of it as a stopwatch showing how long a therapy can keep the illness at bay.
objective response rate medical
"44% objective response rate (ORR) reported in heavily pre-treated CDK4/6-experienced patients"
The objective response rate (ORR) is the percentage of patients in a clinical trial whose tumors measurably shrink or disappear according to preset rules. Investors use it as a quick, objective signal of a drug’s ability to produce a clear treatment effect—like counting how many plants visibly respond after applying a new fertilizer—and higher ORR can improve odds of regulatory approval, commercial success, and company valuation.
at-the-market offerings financial
"net proceeds from "at-the-market" offerings under our sales agreement with TD Securities (USA) LLC"
An at-the-market offering is a method for a company to sell new shares of its stock directly into the stock market over time, rather than all at once. This approach allows the company to raise money gradually, similar to selling small portions of a product as demand grows. For investors, it can influence stock availability and price, making it an important factor to consider when assessing a company's financial strategy.
NRAS-selective inhibitor medical
"Initiated Phase 1/2 clinical trial for RLY-8161, a NRAS-selective inhibitor, in patients with NRAS-mutant melanoma"
vascular anomalies medical
"Continued execution of the Phase 1/2 ReInspire trial, evaluating zovegalisib in PIK3CA-driven vascular anomalies"
Vascular anomalies are abnormal blood vessels or vessel growths—ranging from birth defects in the body's “plumbing” to tumors made of blood vessels—that can cause bleeding, pain, or organ problems. Investors care because diagnosing and treating these conditions drives demand for specialized drugs, devices, imaging and procedures; changes in clinical trial results, approvals, reimbursement, or new technologies can materially affect the revenue and cost outlook for companies in healthcare and medtech.
Revenue $3.0 million vs $7.7 million in Q1 2025
Net loss $73.3 million vs $77.1 million in Q1 2025
Net loss per share $0.41 vs $0.46 in Q1 2025
R&D expenses $70.6 million vs $73.8 million in Q1 2025
G&A expenses $11.0 million vs $18.7 million in Q1 2025
Cash, cash equivalents and investments $642.1 million vs $554.5 million at December 31, 2025
0001812364false00018123642026-05-052026-05-05

 

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): May 05, 2026

 

 

RELAY THERAPEUTICS, INC.

(Exact name of Registrant as Specified in Its Charter)

 

 

Delaware

001-39385

47-3923475

(State or Other Jurisdiction
of Incorporation)

(Commission File Number)

(IRS Employer
Identification No.)

 

 

 

 

 

60 Hampshire Street

 

Cambridge, Massachusetts

 

02139

(Address of Principal Executive Offices)

 

(Zip Code)

 

Registrant’s Telephone Number, Including Area Code: (617) 370-8837

 

 

(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:


Title of each class

 

Trading
Symbol(s)

 


Name of each exchange on which registered

Common Stock, par value $0.001 per share

 

RLAY

 

Nasdaq Global Market

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.

 


Item 2.02 Results of Operations and Financial Condition.

On May 5, 2026, Relay Therapeutics, Inc. announced its financial results for the quarter ended March 31, 2026. A copy of the press release is being furnished as Exhibit 99.1 to this Current Report on Form 8-K.

The information in this Item 2.02, including Exhibit 99.1, of this Current Report on Form 8-K is intended to be furnished and shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such filing.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits

 

99.1

Press release issued by Relay Therapeutics, Inc. on May 5, 2026, furnished herewith.

104

Cover Page Interactive Data File (embedded within Inline XBRL document).

 


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.

 

 

 

RELAY THERAPEUTICS, INC.

 

 

 

 

Date:

May 5, 2026

By:

/s/ Soo-Yeun Lim

 

 

 

Soo-Yeun Lim
General Counsel

 


Exhibit 99.1

img175089203_0.jpg

 

Relay Therapeutics Reports First Quarter 2026 Financial Results and Corporate Updates

 

FDA Breakthrough Therapy designation granted to zovegalisib for PIK3CA-mutant, HR+/HER2- advanced breast cancer, the Phase 3 ReDiscover-2 trial population in 2L breast cancer

 

Presented zovegalisib doublet data at Phase 3 dose in CDK4/6-experienced patients at ESMO TAT, demonstrating 11.1-month median PFS with similar efficacy in kinase and non-kinase mutations

 

Selected zovegalisib plus atirmociclib as go-forward triplet regimen for 1L breast cancer; Phase 3 1L trial in endocrine-sensitive patients expected to initiate in early 2027

 

Initiated Phase 1/2 trial of RLY-8161, a NRAS-selective molecule, in patients with NRAS-mutant solid tumors

 

Initial vascular anomalies clinical data conference call planned for May 19 during the ISSVA World Congress 2026

 

Approximately $642 million in cash, cash equivalents and investments at end of Q1 2026

 

 

Cambridge, Mass. – May 5, 2026 – Relay Therapeutics, Inc. (Nasdaq: RLAY), a clinical-stage, small molecule precision medicine company developing potentially life-changing therapies for patients living with cancer and genetic disease, today reported first quarter 2026 financial results and corporate updates.

 

“We have made important progress so far in 2026, highlighted by promising data supporting further development for the zovegalisib plus atirmociclib triplet combination in frontline breast cancer,” said Sanjiv Patel, M.D., President and Chief Executive Officer of Relay Therapeutics. “With initial clinical data in vascular anomalies expected at ISSVA and preparations underway for our planned Phase 3 frontline study in endocrine-sensitive patients with metastatic breast cancer, we are entering a data-rich period for zovegalisib. Additionally, RLY-8161, our NRAS-selective molecule, has entered clinical development for patients with NRAS-mutant solid tumors. We remain focused on executing across these priorities to bring differentiated therapies to patients.”

 

Corporate Highlights

2L Breast Cancer

U.S. Food and Drug Administration (FDA) granted Breakthrough Therapy designation (BTD) to zovegalisib in combination with fulvestrant for PIK3CA-mutant, HR+/HER2- advanced breast cancer
o
Designation supported by robust clinical data from the Phase 1/2 ReDiscover trial of 600mg twice daily (BID) fasted and 400mg BID fed regimens of zovegalisib in combination with fulvestrant
Presented 400mg BID zovegalisib doublet data at the European Society for Medical Oncology (ESMO) Targeted Anticancer Therapies (TAT) Congress 2026

 

o
11.1-month median progression-free survival (PFS) observed in heavily pre-treated patients with PI3Kα-mutated, HR+/HER2- metastatic breast cancer, consistent with previously reported data
o
Efficacy in patients with kinase and non-kinase domain mutations was similar, with median PFS of 11.2 and 11.0 months, respectively
o
Safety and tolerability data were consistent with previously reported 600mg BID fasted data
Relay Tx continues to execute on the Phase 3 ReDiscover-2 trial of zovegalisib + fulvestrant in PI3Kα-mutated, CDK4/6 pre-treated, HR+/HER2- advanced breast cancer

1L Breast Cancer

Announced clinical data for zovegalisib plus atirmociclib triplet combination, plans for frontline breast cancer study, and clinical supply agreement with Pfizer
o
Compelling efficacy and tolerability data presented for zovegalisib triplet in median third-line (3L) patients with PI3Kα-mutated, HR+/HER2- metastatic breast cancer
o
44% objective response rate (ORR) reported in heavily pre-treated CDK4/6-experienced patients (median 3L) at unoptimized doses and ORR was similar across kinase and non-kinase PIK3CA mutations
o
Adverse events were consistent with those previously reported by each molecule
o
Phase 3 1L trial in patients with endocrine-sensitive breast cancer expected to initiate in early 2027, subject to regulatory feedback
Pfizer has agreed to supply atirmociclib for the experimental arm and the palbociclib portion of the control arm for use in the planned study, and Relay Tx will retain full global rights for zovegalisib
Relay Tx continues to execute the Phase 1/2 ReDiscover trial, advancing the ongoing triplet cohorts with zovegalisib + atirmociclib + endocrine therapy

Vascular Anomalies

Corporate conference call planned for May 19 at 8:00am ET during the International Society for the Study of Vascular Anomalies (ISSVA) World Congress 2026 to announce initial clinical results for zovegalisib in vascular anomalies
o
Late breaking abstract for clinical data to be presented May 20 from 4:45pm-4:49pm ET
o
Pre-clinical data presentation May 22 at 11:10am ET
o
Conference call details to be shared at a later date
Continued execution of the Phase 1/2 ReInspire trial, evaluating zovegalisib in PIK3CA-driven vascular anomalies

NRAS Selective Inhibitor: RLY-8161

Initiated Phase 1/2 clinical trial for RLY-8161, a NRAS-selective inhibitor, in patients with NRAS-mutant melanoma and other NRAS-mutant solid tumors

 

First Quarter 2026 Financial Results

 

Cash, Cash Equivalents and Investments: As of March 31, 2026, cash, cash equivalents and investments totaled $642.1 million, as compared to $554.5 million as of December 31, 2025. The increase in cash was due to $137.1 million in net proceeds from "at-the-market" offerings under our sales agreement with TD Securities (USA) LLC during the quarter. This figure does not include an additional $22.1 million in net proceeds received from "at-the-market" offerings in April. The company expects its current cash, cash equivalents, and investments will be sufficient to fund its operating expenses and capital expenditure requirements into 2029.


 

 

Revenue: Revenue was $3.0 million for the first quarter of 2026, as compared to $7.7 million for the first quarter of 2025. The revenue recognized in each period was under the company's Exclusive License Agreement with Elevar Therapeutics, Inc.

 

R&D Expenses: Research and development expenses were $70.6 million for the first quarter of 2026, as compared to $73.8 million for the first quarter of 2025. The decrease was primarily due to the series of strategic choices made to streamline the research organization prior to 2026, offset by increases in costs related to the ReDiscover-2 trial.



G&A Expenses: General and administrative expenses were $11.0 million for the first quarter of 2026, as compared to $18.7 million for the first quarter of 2025. The decrease was primarily due to decreases in employee compensation costs, including stock compensation expense, and costs to obtain the Exclusive License Agreement with Elevar Therapeutics, Inc., which were expensed during the three months ended March 31, 2025.



Net Loss: Net loss was $73.3 million for the first quarter of 2026, or a net loss per share of $0.41, as compared to a net loss of $77.1 million for the first quarter of 2025, or a net loss per share of $0.46.

 

About Zovegalisib

Zovegalisib is the lead program in Relay Therapeutics’ efforts to discover and develop mutant-selective inhibitors of PI3Kα, the most frequently mutated kinase in all cancers and all vascular anomalies. Zovegalisib has the potential, if approved, to address a significant portion of the approximately 140,000 patients with HR+/HER2- breast cancer with a PI3Kα mutation and the estimated 170,000 patients with vascular anomalies driven by a PI3Kα mutation per year in the United States, one of the largest patient populations for a precision medicine.

 

Traditionally, the development of PI3Kα inhibitors has focused on the active, or orthosteric, site. The therapeutic index of orthosteric inhibitors is limited by the lack of clinically meaningful selectivity for mutant versus wild-type (WT) PI3Kα and off-isoform activity. Toxicity related to inhibition of WT PI3Kα and other PI3K isoforms results in sub-optimal inhibition of mutant PI3Kα with reductions in dose intensity and frequent discontinuation. The Dynamo® platform enabled the discovery of zovegalisib, the first known allosteric, pan-mutant, and isoform-selective PI3Kα inhibitor, designed to overcome these limitations. Relay Therapeutics solved the full-length cryo-EM structure of PI3Kα, performed computational long time-scale molecular dynamic simulations to elucidate conformational differences between WT and mutant PI3Kα, and leveraged these insights to support the design of zovegalisib. Zovegalisib is currently being evaluated in multiple metastatic breast cancer studies and a Phase 1/2 study designed to treat patients with PIK3CA (PI3Kα) mutation driven vascular anomalies. For more information on zovegalisib, please visit here.

 

About Relay Therapeutics

Relay Therapeutics (Nasdaq: RLAY) is a clinical-stage, small molecule precision medicine company developing potentially life-changing therapies for patients living with cancer and genetic disease. Relay Therapeutics’ Dynamo® platform integrates an array of leading-edge computational and experimental approaches designed to drug protein targets that have previously been intractable or inadequately


 

addressed. The company’s lead clinical asset, zovegalisib, is the first pan-mutant selective PI3Kα inhibitor to enter clinical development and is currently in a Phase 3 clinical trial (ReDiscover-2) in HR+/HER2- metastatic breast cancer. Zovegalisib is also being investigated in a group of genetic disease indications called PI3Kα-driven vascular anomalies. Relay Therapeutics’ pipeline also includes programs for NRAS-driven solid tumors and Fabry disease. For more information, please visit www.relaytx.com or follow us on LinkedIn.

 

Cautionary Note Regarding Forward-Looking Statements

This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, as amended, including, without limitation, implied and express statements regarding Relay Therapeutics’ strategy, business plans and focus; the progress and timing of the clinical development of the programs across Relay Therapeutics’ portfolio, including zovegalisib and RLY-8161; the timing of clinical data readouts and presentations for zovegalisib; the expected therapeutic benefits and potential efficacy and tolerability of zovegalisib, both as a monotherapy and in combination with other agents, and its other programs; the clinical data for zovegalisib; the interactions with regulatory authorities and any related approvals; the potential commercialization and market opportunity for zovegalisib; and the cash runway projection and the expectations regarding Relay Therapeutics’ use of capital and expenses. The words “may,” “might,” “will,” “could,” “would,” “should,” “plan,” “anticipate,” “intend,” “believe,” “expect,” “estimate,” “seek,” “predict,” “future,” “project,” “potential,” “continue,” “target” and similar words or expressions, or the negative thereof, are intended to identify forward-looking statements, although not all forward-looking statements contain these identifying words.

 

Any forward-looking statements in this press release are based on management's current expectations and beliefs and are subject to a number of risks, uncertainties and important factors that may cause actual events or results to differ materially from those expressed or implied by any forward-looking statements contained in this press release, including, without limitation, risks associated with: the impact of global economic uncertainty, geopolitical instability and conflicts, or public health epidemics or outbreaks of an infectious disease on countries or regions in which Relay Therapeutics has operations or does business, as well as on the timing and anticipated results of its clinical trials, strategy, future operations and profitability; significant political, trade or regulatory developments, such as tariffs, beyond Relay Therapeutics’ control; the delay or pause of any current or planned clinical trials or the development of Relay Therapeutics’ drug candidates; the risk that the preliminary or interim results of its preclinical or clinical trials may not be predictive of future or final results in connection with future clinical trials of its product candidates and that interim and early clinical data may change as more patient data become available and are subject to audit and verification procedures; Relay Therapeutics’ ability to successfully demonstrate the safety and efficacy of its drug candidates; the timing and outcome of its planned interactions with regulatory authorities; and obtaining, maintaining and protecting its intellectual property. These and other risks and uncertainties are described in greater detail in the section entitled “Risk Factors” in Relay Therapeutics’ most recent Annual Report on Form 10-K and Quarterly Report on Form 10-Q, as well as any subsequent filings with the Securities and Exchange Commission. In addition, any forward-looking statements represent Relay Therapeutics' views only as of today and should not be relied upon as representing its views as of any subsequent date. Relay Therapeutics explicitly disclaims any obligation to update any forward-looking statements. No representations or warranties (expressed or implied) are made about the accuracy of any such forward-looking statements.

 

Contact:


 

Mitch Maisel

mmaisel@relaytx.com

 

Media:

Dan Budwick

1AB

973-271-6085

dan@1abmedia.com


 

Relay Therapeutics, Inc.

Condensed Consolidated Statements of Operations and Comprehensive Loss

(In thousands, except share and per share data)

(Unaudited)

 

 

 

Three Months Ended March 31,

 

 

 

2026

 

 

2025

 

Revenue:

 

 

 

 

 

 

License and other revenue

 

$

3,000

 

 

$

7,679

 

Total revenue

 

 

3,000

 

 

 

7,679

 

Operating expenses:

 

 

 

 

 

 

Research and development expenses

 

$

70,563

 

 

$

73,809

 

General and administrative expenses

 

 

11,027

 

 

 

18,739

 

Total operating expenses

 

 

81,590

 

 

 

92,548

 

Loss from operations

 

 

(78,590

)

 

 

(84,869

)

Other income:

 

 

 

 

 

 

Interest income

 

 

5,352

 

 

 

7,813

 

Other expense

 

 

(53

)

 

 

(9

)

Total other income, net

 

 

5,299

 

 

 

7,804

 

Net loss

 

$

(73,291

)

 

$

(77,065

)

Net loss per share, basic and diluted

 

$

(0.41

)

 

$

(0.46

)

Weighted average shares of common stock, basic and diluted

 

 

179,849,137

 

 

 

169,233,155

 

Other comprehensive (loss) income:

 

 

 

 

 

 

Unrealized holding (loss) gain

 

 

(172

)

 

 

1,029

 

Total other comprehensive (loss) income

 

 

(172

)

 

 

1,029

 

Total comprehensive loss

 

$

(73,463

)

 

$

(76,036

)

 


 

Relay Therapeutics, Inc.

Selected Condensed Consolidated Balance Sheet Data

(In thousands)

(Unaudited)

 

March 31,

2026

December 31,

2025

Cash, cash equivalents and investments

$

642,065

$

554,518

Working capital (1)

628,711

552,701

Total assets

699,613

621,331

Total liabilities

57,430

54,271

Total stockholders’ equity

642,183

567,060

Restricted cash

1,336

1,336

 

(1) Working capital is defined as current assets less current liabilities.

 


FAQ

How did Relay Therapeutics (RLAY) perform financially in Q1 2026?

Relay Therapeutics reported Q1 2026 revenue of $3.0 million, down from $7.7 million a year earlier. Net loss narrowed to $73.3 million, or $0.41 per share, compared with a net loss of $77.1 million, or $0.46 per share.

What is Relay Therapeutics’ cash position and runway after Q1 2026?

As of March 31, 2026, Relay Therapeutics held $642.1 million in cash, cash equivalents and investments. This includes $137.1 million in net proceeds from at-the-market offerings, and management expects this capital to fund operating and capital expenditure requirements into 2029.

What key regulatory milestone did zovegalisib achieve for Relay Therapeutics (RLAY)?

The FDA granted Breakthrough Therapy designation to zovegalisib plus fulvestrant for PIK3CA-mutant, HR+/HER2- advanced breast cancer. This decision was supported by Phase 1/2 ReDiscover data at 600mg BID fasted and 400mg BID fed regimens in this patient population.

What clinical efficacy data did Relay Therapeutics report for zovegalisib in breast cancer?

Relay Therapeutics reported 11.1-month median progression-free survival for a 400mg BID zovegalisib doublet in PI3Kα-mutated HR+/HER2- metastatic breast cancer, and a 44% objective response rate for the zovegalisib plus atirmociclib triplet in heavily pre-treated CDK4/6-experienced patients.

What late-stage trial plans does Relay Therapeutics (RLAY) have for zovegalisib?

Relay continues its Phase 3 ReDiscover‑2 trial of zovegalisib plus fulvestrant in second-line HR+/HER2- advanced breast cancer and plans a Phase 3 first-line trial in endocrine-sensitive breast cancer, expected to start in early 2027, subject to regulatory feedback.

What is RLY-8161 and what progress was reported in Q1 2026?

RLY‑8161 is Relay Therapeutics’ NRAS-selective inhibitor being developed for NRAS-mutant melanoma and other NRAS-mutant solid tumors. During Q1 2026, the company initiated a Phase 1/2 clinical trial to evaluate this candidate in patients with NRAS-mutant solid tumors.

Filing Exhibits & Attachments

2 documents