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Atara Biotherapeutics Provides a Business Update Atara renegotiates one-time milestone payment with HCRx THOUSAND OAKS, California -(BUSINESS WIRE)- Atara Biotherapeutics, Inc . (Nasdaq: ATRA), a leader in T-cell immunot

Key Takeaway: Atara Biotherapeutics has announced a renegotiation of their $9.0 million milestone payment with HealthCare Royalty. The due date has been extended from June 30, 2026, to January 1, 2028, which will allow Atara to focus on addressing regulatory concerns related to its therapy tabelecleucel. The company's CEO expressed optimism about this therapy's potential for European patients with an ultra-rare form of lymphoma. Additionally, Atara issued a warrant for shares as part of the agreement amendments.

Market Sentiment Analysis

POSITIVE FACTORS

  • The renegotiated payment extension allows Atara to address regulatory concerns more effectively.
  • Atara expresses optimism about their therapy tabelecleucel, which shows promise for patients with specific conditions.
  • The amendment provides necessary time for collaboration with HCRx in navigating FDA approval.

CONCERNS & RISKS

  • There remain significant uncertainties regarding FDA's review of tabelecleucel.
  • Atara faces risks associated with the lengthy and costly pharmaceutical product development process.
  • Capital access and cash resource sufficiency are ongoing concerns for Atara's operational continuity.

Full Press Release Details

Atara Biotherapeutics Provides a Business Update
Atara renegotiates one-time milestone payment with HCRx
THOUSAND OAKS, California -(BUSINESS WIRE)- Atara Biotherapeutics, Inc. (Nasdaq: ATRA), a leader in T-cell immunotherapy, leveraging its novel allogeneic Epstein-Barr virus (EBV) T-cell platform to develop transformative therapies for patients with cancer and autoimmune
diseases, today announced that the Company entered into an amendment (the Amendment) to the Purchase and Sale Agreement dated as of December 20, 2022 with a fund managed by HealthCare Royalty ("HCRx"). Under the terms of the
Amendment, HCRx agreed to amend the due date of the one-time of $9.0 million cash payment associated with the achievement of a certain milestone within the Amended and Restated Commercialization Agreement
dated October 31, 2023, with Pierre Fabre Medicament, as amended, from June 30, 2026 to January 1, 2028.
"We are thankful for this
extension to our one-time cash payment to HCRx", said Cokey Nguyen, President and Chief Executive Officer of Atara. "This flexibility allows us to focus on addressing the concerns in the latest CRL with the agency, supporting our
partners, Pierre Fabre. We believe in the potential of tabelecleucel and are optimistic about the path forward."
In connection with the Amendment,
the Company issued a warrant to purchase up to 400,000 shares of the Company's Common Stock. The exercise price of the Warrant is equal to $0.0001 per share, subject to adjustment as provided therein, and the Warrant will be exercisable
immediately and have no expiration date. The exercise of the Warrant is subject to a beneficial ownership limit as set forth in the Warrant.
"Tabelecleucel is proving to be an important option for European patients suffering from relapsed or refractory EBV+ PTLD, an ultra-rare and aggressive
lymphoma", said Clarke Futch, Chairman and Chief Executive Officer at HCRx. "This amendment to our agreement provides Atara and their partner time to work with the FDA for a path to approval in the United States, where there remain
limited treatment options and significant unmet need."
About Atara Biotherapeutics, Inc.
Atara is harnessing the natural power of the immune system to develop
off-the-shelf cell therapies for difficult-to-treat cancers and autoimmune conditions
that can be rapidly delivered to patients from inventory. With cutting-edge science and differentiated approach, Atara is the first company in the world to receive regulatory approval of an allogeneic T-cell
immunotherapy. Our advanced and versatile T-cell platform does not require T-cell receptor or HLA gene editing and forms the basis of a diverse portfolio of
investigational therapies that target EBV, the root cause of certain diseases. Atara is headquartered in Southern California. For more information, visit atarabio.com and
follow @Atarabio on X and LinkedIn.
Forward-Looking Statements
This press release contains or may imply "forward-looking statements" within the meaning of Section 27A of the Securities Act of 1933 and
Section 21E of the Securities Exchange Act of 1934. For example, forward-looking statements include statements regarding: (1) the development, timing and progress of tab-cel and (2) the timing
of the $9.0 million cash payment to HCRx. Because such statements deal with future events and are based on Atara's current expectations, they are subject to various risks and uncertainties and actual results, performance or achievements
of Atara could differ materially from
those described in or implied by the statements in this press release. These forward-looking statements are subject to risks and uncertainties, including, without limitation, risks and
uncertainties associated with our year-end the costly and time-consuming pharmaceutical product development process and the uncertainty of clinical success; risks related to FDA's review of tab-cel; our ability to access capital, and the sufficiency of Atara's cash resources and access to additional capital on favorable terms or at all; and other risks and uncertainties affecting Atara, including
those discussed in Atara's filings with the Securities and Exchange Commission, including in the "Risk Factors" and "Management's Discussion and Analysis of Financial Condition and Results of Operations" sections
of the Company's most recently filed periodic reports on Form 10-K and Form 10-Q and subsequent filings and in the documents incorporated by reference therein.
Except as otherwise required by law, Atara disclaims any intention or obligation to update or revise any forward-looking statements, which speak only as of the date hereof, whether as a result of new information, future events or circumstances or
Investor and Media Relations
Sr. Director, Strategy and Operations

Frequently Asked Questions

What is the recent business update from Atara Biotherapeutics?

Atara Biotherapeutics amended its agreement with HCRx, extending a $9 million payment deadline.

What is tabelecleucel used for?

Tabelecleucel is an option for patients with relapsed or refractory EBV+ PTLD lymphoma.

What is unique about Atara's T-cell therapies?

Atara's T-cell therapies are off-the-shelf and do not require gene editing for effectiveness.

How many shares were involved in Atara's recent warrant issuance?

Atara issued a warrant to purchase up to 400,000 shares of its common stock.

What does Atara focus on in its therapies?

Atara focuses on developing therapies that harness the immune system for difficult cancers.

Last updated: Feb 23, 2026