goss-20211011
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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): October 11, 2021
GOSSAMER BIO, INC.
(Exact name of Registrant as Specified in Its Charter)
 
Delaware001-3879647-5461709
(State or Other Jurisdiction
of Incorporation)
(Commission File Number)(IRS Employer
Identification No.)
3013 Science Park Road
San Diego, California, 92121

(Address of Principal Executive Offices) (Zip Code)
(858) 684-1300
(Registrant’s Telephone Number, Including Area Code)
N/A
(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 (see General Instructions A.2. below):
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, $0.0001 par value per share GOSS Nasdaq Global Select 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 7.01 Regulation FD Disclosure.

On October 11, 2021, Gossamer Bio, Inc. (the “Company”) issued a press release reporting the addition of two CNS-penetrant Bruton's tyrosine kinase, or BTK, inhibitors to its product candidate pipeline discussed in Item 8.01 below. The full text of the press release is attached as Exhibit 99.1 to this Current Report.

The information contained in this Item 7.01, including in Exhibit 99.1 hereto, is being “furnished” and shall not be deemed “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended, is not subject to the liabilities of that section and is not deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, except as shall be expressly set forth by specific reference in such a filing.

Item 8.01 Other Events.

On October 11, 2021, the Company announced the addition of two CNS-penetrant BTK inhibitors to its product candidate pipeline. The Company plans to initiate first-in-human studies of the first of these candidates, GB5121, in the fourth quarter of 2021. The Company intends to develop GB5121 in CNS-oncology indications, including relapsed / refractory primary CNS lymphoma, for which a potentially registrational Phase 1b / 2 study is expected to initiate in the first half of 2022. The second product candidate, GB7208, is currently in IND-enabling studies and is expected to enter the clinic in the second half of 2022. The Company intends to develop GB7208 in neuroinflammatory and neurodegenerative diseases, including multiple sclerosis (MS). In a BTK-dependent pre-clinical disease model, GB7208 demonstrated superior outcomes vs. tolebrutinib, a BTK inhibitor being studied in a broad Phase 3 program for MS.
Item 9.01 Financial Statements and Exhibits.
(d) Exhibits.
 
Exhibit
Number
 Description
99.1 
   
1


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 thereunto duly authorized.
 
  GOSSAMER BIO, INC.
    
Date: October 12, 2021 By:/s/ Christian Waage
   Christian Waage
   Executive Vice President & General Counsel

2
Document
Exhibit 99.1
https://cdn.kscope.io/9397fc8a9d4aec378846bcc4ddffe838-gossamerbio-logoxrega.jpg
Gossamer Bio Announces Addition of Two CNS-Penetrant BTK Inhibitors to its Product Candidate Pipeline: GB5121 & GB7208


SAN DIEGO — (BUSINESS WIRE) — October 11, 2021 — Gossamer Bio, Inc. (Nasdaq: GOSS), a clinical-stage biopharmaceutical company focused on discovering, acquiring, developing and commercializing therapeutics in the disease areas of immunology, inflammation and oncology, today announced the addition of two CNS-penetrant Bruton’s tyrosine kinase (BTK) inhibitors to its product candidate pipeline.

Gossamer plans to initiate first-in-human studies of the first of these candidates, GB5121, in the fourth quarter of 2021. Gossamer intends to develop GB5121 in CNS-oncology indications, including relapsed / refractory primary CNS lymphoma (PCNSL), for which a potentially registrational Phase 1b / 2 study is expected to initiate in the first half of 2022.

The second product candidate, GB7208, is currently in IND-enabling studies and is expected to enter the clinic in the second half of 2022. In a BTK-dependent pre-clinical disease model, GB7208 demonstrated superior outcomes vs. tolebrutinib, a BTK inhibitor being studied in a broad Phase 3 program for multiple sclerosis (MS).

“We are thrilled to be able to share our latest product candidates, the CNS-penetrant BTK inhibitors GB5121 and GB7208,” said Faheem Hasnain, Chairman, co-founder and CEO of Gossamer Bio. “These two promising product candidates are the result of intensive internal research, and we are excited to advance them into the clinic where there remains a high unmet need in treating malignant brain tumors and neurologic diseases.”

“BTK inhibitors have emerged as an important class of treatment, particularly in oncology, but existing molecules have not been optimized for the treatment of central nervous system disorders,” said Laura Carter, Ph.D., Chief Scientific Officer of Gossamer Bio. “GB5121 and GB7208 were designed specifically with these disorders in mind, and in pre-clinical models, they have been shown to be potent, highly selective BTK inhibitors, with potentially best-in-class brain penetrance and target occupancy.”

GB5121: Oral, CNS-Penetrant, Irreversible BTK Inhibitor for Treatment of PCNSL

Superior CNS penetration in preclinical models compared to other BTK inhibitors in development for oncology
Highly selective for BTK, with no non-TEC kinases inhibited at greater than 50% in a broad kinome scan
First-in-human Phase 1 clinical trial expected to initiate in the fourth quarter of 2021
First-in-patient Phase 1b/2 clinical trial in patients with relapsed / refractory CNS lymphoma expected to initiate in the first half of 2022
Relapsed and refractory PCNSL provides potential accelerated path to registration

GB7208: Oral, CNS-Penetrant, Irreversible BTK Inhibitor for Treatment of MS

Potentially best-in-class brain penetrance among BTK inhibitors being developed for neuroinflammatory and neurodegenerative diseases based on pre-clinical models



In a BTK-dependent pre-clinical disease model, demonstrated superiority vs. tolebrutinib, a CNS penetrant BTK inhibitor in Phase 3 development for MS
Potent inhibition of microglia inflammation in vitro and in vivo
First-in-human Phase 1 clinical trial expected to initiate in the second half of 2022

Gossamer will host a conference call and webcast today, Monday, October 11, 2021, for investors and analysts at 2:30pm ET to discuss its new product candidates. As part of the event, Gossamer Bio management will be available for questions.

Details below:

Conference Call and Webcast

Gossamer will host a conference call and live audio webcast today, Monday, October 11, 2021, at 2:30 pm ET to discuss its new product candidates. The live audio webcast may be accessed through the “Events / Presentations” page in the “Investors” section of the Company's website at www.gossamerbio.com. Alternatively, the conference call may be accessed through the following:

Conference ID: 4165598
Domestic Dial-in Number: (833) 646-0603
International Dial-in Number: (929) 517-9782
Live Webcast: https://edge.media-server.com/mmc/p/4jha6kh9

A replay of the audio webcast will be available for 30 days on the “Investors” section of the Company's website, www.gossamerbio.com.

About Gossamer Bio
Gossamer Bio is a clinical-stage biopharmaceutical company focused on discovering, acquiring, developing and commercializing therapeutics in the disease areas of immunology, inflammation and oncology. Its goal is to be an industry leader in each of these therapeutic areas and to enhance and extend the lives of patients suffering from such diseases.

Forward-Looking Statements
Gossamer cautions you that statements contained in this press release regarding matters that are not historical facts are forward-looking statements. These statements are based on the Company’s current beliefs and expectations. Such forward-looking statements include, but are not limited to, statements regarding: the anticipated timing of initiation of clinical trials for our product candidates and plans to advance our product candidates; the potential clinical benefits and market potential of our product candidates; and plans to rapidly advance GB5121 through a potential accelerated path to registration. The inclusion of forward-looking statements should not be regarded as a representation by Gossamer that any of its plans will be achieved. Actual results may differ from those set forth in this press release due to the risks and uncertainties inherent in Gossamer’s business, including, without limitation: potential delays in the commencement, enrollment and completion of clinical trials; disruption to our operations from the ongoing global outbreak of the COVID-19 pandemic, including clinical trial delays; the Company’s dependence on third parties in connection with product manufacturing, research and preclinical and clinical testing; the results of preclinical studies and early clinical trials are not necessarily predictive of future results; the success of Gossamer’s clinical trials and preclinical studies for its product candidates; regulatory developments in the United States and foreign countries; unexpected adverse side effects or inadequate efficacy of our product candidates that may limit their development, regulatory approval and/or commercialization, or may result in recalls or product liability claims; Gossamer’s ability to obtain and maintain intellectual property protection for its product candidates; Gossamer’s ability to comply with its obligations in collaboration agreements with third parties or the agreements under which it licenses



intellectual property rights from third parties; Gossamer may use its capital resources sooner than it expects; and other risks described in the Company’s prior press releases and the Company’s filings with the Securities and Exchange Commission (SEC), including under the heading “Risk Factors” in the Company’s annual report on Form 10-K and any subsequent filings with the SEC. You are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date hereof, and Gossamer undertakes no obligation to update such statements to reflect events that occur or circumstances that exist after the date hereof. All forward-looking statements are qualified in their entirety by this cautionary statement, which is made under the safe harbor provisions of the Private Securities Litigation Reform Act of 1995.
For Investors and Media:
Bryan Giraudo, Chief Operating Officer & Chief Financial Officer
Gossamer Bio Investor Relations
ir@gossamerbio.com