Continued progress across pipeline, including advancing BT8009, BT5528, and BT7480 in ongoing clinical trials; clinical and regulatory updates remain on track for BT8009 in 2H23

Entered into strategic collaborations with Novartis, Bayer, and broadened an ongoing collaboration with DKFZ in radiopharmaceuticals

Strengthened balance sheet with gross proceeds of approximately $230M, from July 2023 public offering and $45M Bayer upfront payment; pro-forma cash balance is over $600M

Enhanced leadership team with new CFO hire, Alethia Young, who brings to Bicycle over 20 years of experience in the biopharma industry

Bicycle Therapeutics plc (NASDAQ: BCYC), a biotechnology company pioneering a new and differentiated class of therapeutics based on its proprietary bicyclic peptide (Bicycle®) technology, today reported financial results for the second quarter ended June 30, 2023 and provided recent corporate updates.

“We have made significant progress in the first half of 2023 executing on our plan to become one of the world’s leading solid tumor medicines companies,” said Kevin Lee, Ph.D., Chief Executive Officer of Bicycle Therapeutics. “Not only have we continued to advance our three clinical trial candidates - BT5528, BT8009 and BT7480 – but we have also entered into multiple research and development collaborations with pioneers in the radiopharmaceutical space to develop Bicycle® radio-conjugates (BRCs). These collaborations enable us to advance a broad pipeline of partnered and wholly owned BRCs that represents the third pillar of our oncology strategy beyond our Bicycle toxin conjugate (BTC™) and Bicycle tumor-targeted immune cell agonist® (Bicycle TICA™) programs. Our clinical programs remain on track for us to provide updates in the second half of 2023. Additionally, we are excited to welcome Alethia Young, our new Chief Financial Officer, who brings over 20 years of experience in the healthcare and biotech industry to Bicycle. The advancement of our programs and platform in oncology and beyond are supported by a strong balance sheet that has been further enhanced by the recent proceeds from a public equity offering completed in July.”

Second Quarter 2023 and Recent Highlights

• Raised Gross Proceeds of $230.0 Million in Public Offering. In July 2023, Bicycle announced the closing of an underwritten public offering resulting in gross proceeds of approximately $230.0 million, including the full exercise of the underwriters’ option to purchase additional shares. Net proceeds were approximately $215.5 million. In addition, the company also received gross proceeds from Bicycle’s at-the-market (ATM) offering program during the second quarter of 2023 totaling $12.5 million.

• Continued Progress with Clinical and Regulatory Programs Including BT8009, BT5528, and BT7480. Enrollment in the company’s clinical trial of BT8009, as well as discussions with the U.S. Food and Drug Administration (FDA) remain ongoing. The company expects to provide clinical and regulatory updates on BT8009 in the second half of 2023.

• Enhanced Leadership Team with Appointment of Alethia Young as Chief Financial Officer. In June 2023, Bicycle announced the appointment of Alethia Young as its new Chief Financial Officer, effective July 17. Ms. Young brings to Bicycle more than 20 years of experience in the healthcare and biotech industry, most recently serving as the Chief Financial Officer at Graphite Bio. Prior to Graphite Bio, she served as a senior biotech analyst and head of research at Cantor Fitzgerald, and previously held senior biotech analyst positions at Credit Suisse and Deutsche Bank.

• Presented Potent Anti-Tumor Activity of a Lead-212 Labelled MT1-MMP Targeting Bicycle Radionuclide Conjugate™ at TIDES 2023. In May 2023, Bicycle presented preclinical results from a preclinical research collaboration with OranoMed. In these studies, Pb-BCY20603, a prototype BRC™ that binds with high affinity to the tumor antigen MT1-MMP and carries a chelate of lead-212, showed potent anti-tumor activity in rodent tumor xenograft studies and achieved complete tumor regressions after 3 dosing cycles of 10 µCi, given two weeks apart. Median survival was increased for each dosing group with 90% survival observed for the 3 cycles of 10 μCi, treatment at the end of the 100-day study.

• Announced Multiple Strategic Collaborations for Developing BRCs for Potential Oncology Targets
  • Strategic Collaboration with Bayer. In May 2023, Bicycle announced that it has entered into a strategic collaboration agreement with Bayer to discover, develop, manufacture, and commercialize BRCs for multiple agreed upon oncology targets. Bicycle will use its proprietary phage platform to develop bicyclic peptides, while Bayer will be responsible for, and fully fund, all further preclinical and clinical development, manufacturing, and commercialization activities. Bicycle received a $45 million upfront payment in July 2023 and, with potential development and commercial-based milestone fees, payments under the collaboration to Bicycle could total up to $1.7 billion. Bicycle will also be eligible to receive tiered royalties on Bicycle-based medicines commercialized by Bayer.
  • Expanded Collaboration with the German Cancer Research Center. In May 2023, Bicycle announced the extension of a collaboration with the German Cancer Research Center (DKFZ) to develop and discover BRCs for potential oncology targets. This enhanced relationship will provide a more continuous and purpose-driven commitment towards advancing Bicycle’s wholly owned BRC candidates. Bicycle intends to commence initial testing of its wholly owned BRCs in patients during 2024.
  • Strategic Collaboration with Novartis. In March 2023, Bicycle announced a strategic collaboration with Novartis to collaborate on the discovery, development and commercialization of BRCs for multiple agreed upon oncology targets. Bicycle will utilize its proprietary phage platform to discover Bicycles to be developed into BRCs. Novartis will be responsible for and fund further development, manufacture and commercialization of the BRCs. Under the collaboration, Bicycle received a $50 million upfront payment in April 2023 and is eligible for development and commercial-based milestone payments totaling up to $1.7 billion. Bicycle will also be eligible to receive tiered royalties on Bicycle-based medicines commercialized by Novartis.

Financial Results

• Cash and cash equivalents were $340.4 million as of June 30, 2023, compared to $339.2 million as of December 31, 2022. The increase in cash and cash equivalents is primarily due to $50.0 million received from our collaboration agreement with Novartis and $14.8 million of net proceeds from our ATM offering program, offset by cash used in operating activities. Our cash and cash equivalents at June 30, 2023 do not include the upfront payment from Bayer or proceeds from our public offering received in July 2023. Additionally in July, the company strengthened its balance sheet with gross proceeds of $230.0 million, or net proceeds of approximately $215.5 million, from the July 2023 public offering.

• Research and development expenses were $39.7 million for the three months ended June 30, 2023, compared to $19.9 million for the three months ended June 30, 2022. The increase in expense of $19.9 million was primarily due to increased clinical program expenses for BT8009, BT7480 development expenses, and other discovery and platform related expenses, as well as increased personnel-related expenses, including incremental non-cash share-based compensation expense of $1.3 million, offset by incremental UK research and development incentives.

• General and administrative expenses were $14.8 million for the three months ended June 30, 2023, compared to $11.8 million for the three months ended June 30, 2022. The increase of $3.0 million for the three months ended June 30, 2023 as compared to the same period in the prior year was primarily due to an increase in professional and consulting fees, as well as an increase in personnel-related expenses, including incremental non-cash share-based compensation expense of $1.2 million, offset by a favorable impact of foreign exchange rates.

• Net loss was $42.6 million, or $(1.41) basic and diluted net loss per share, for the three months ended June 30, 2023, compared to net loss of $26.8 million, or $(0.90) basic and diluted net loss per share, for three months ended June 30, 2022.

About Bicycle Therapeutics

Bicycle Therapeutics (NASDAQ: BCYC) is a clinical-stage biopharmaceutical company developing a novel class of medicines, referred to as Bicycles, for diseases that are underserved by existing therapeutics. Bicycles are fully synthetic short peptides constrained with small molecule scaffolds to form two loops that stabilize their structural geometry. This constraint facilitates target binding with high affinity and selectivity, making Bicycles attractive candidates for drug development. Bicycle is evaluating BT5528, a second-generation Bicycle Toxin Conjugate (BTC™) targeting EphA2; BT8009, a second-generation BTC targeting Nectin-4, a well-validated tumor antigen; and BT7480, a Bicycle TICA™ targeting Nectin-4 and agonizing CD137, in company-sponsored Phase I/II trials. In addition, BT1718, a BTC that targets MT1-MMP, is being investigated in an ongoing Phase I/IIa clinical trial sponsored by the Cancer Research UK Centre for Drug Development. Bicycle is headquartered in Cambridge, UK, with many key functions and members of its leadership team located in Cambridge, MA. For more information, visit bicycletherapeutics.com.

Forward Looking Statements

This press release may contain forward-looking statements made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. These statements may be identified by words such as “aims,” “anticipates,” “believes,” “could,” “estimates,” “expects,” “forecasts,” “goal,” “intends,” “may,” “plans,” “possible,” “potential,” “seeks,” “will” and variations of these words or similar expressions that are intended to identify forward-looking statements, although not all forward-looking statements contain these words. Forward-looking statements in this press release include, but are not limited to, statements regarding Bicycle’s anticipated advancement of its product candidates, including BT8009, BT5528 and BT7480; the anticipated progression of Bicycle’s clinical trials; the availability of and timing of announcement of data from clinical trials and regulatory updates for clinical candidates; statements regarding Bicycle’s collaborations with Bayer, Novartis and DKFZ; the discovery, development and potential commercialization of potential radiopharmaceutical or other product candidates using Bicycle’s technology under the strategic collaboration agreements; Bicycle’s intent to commence initial testing of its wholly owned BRCs in patients by the end of 2024; and the therapeutic potential for Bicycles in oncology and other applications. Bicycle may not actually achieve the plans, intentions or expectations disclosed in these forward-looking statements, and you should not place undue reliance on these forward-looking statements. Actual results or events could differ materially from the plans, intentions and expectations disclosed in these forward-looking statements as a result of various factors, including: uncertainties inherent in the initiation, progress and completion of clinical trials and clinical development of Bicycle’s product candidates; the risk that Bicycle may not realize the intended benefits of its technology or strategic collaborations; availability and timing of results from clinical trials; whether the outcomes of preclinical studies will be predictive of clinical trial results; whether initial or interim results from a clinical trial will be predictive of the final results of the trial or the results of future trials; the risk that trials may have unsatisfactory outcomes; potential adverse effects arising from the testing or use of Bicycle’s product candidates; and other important factors, any of which could cause Bicycle’s actual results to differ from those contained in the forward-looking statements, are described in greater detail in the section entitled “Risk Factors” in Bicycle’s Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission (SEC) on May 4, 2023, as well as in other filings Bicycle may make with the SEC in the future. Any forward-looking statements contained in this press release speak only as of the date hereof, and Bicycle expressly disclaims any obligation to update any forward-looking statements contained herein, whether because of any new information, future events, changed circumstances or otherwise, except as otherwise required by law.

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