FOR-46

Pictured: FibroGen signage at its headquarters in California/iStock, Sundry Photography FibroGen endured clinical setbacks and a leadership shake-up in recent months, but the California biotech remains optimistic about its path forward, the company said Monday during its second-quarter 2023 earnings report. In particular, FibroGen will focus on what interim CEO Thane Wettig calls its “four strategic pillars” to help the company maximize shareholder value. First of these pillars is its Phase III candidate pamrevlumab, which is currently being developed for Duchenne muscular dystrophy (DMD) and locally advanced pancreatic cancer. The investigational antibody, designed to target the CTGF protein, hit a rough patch during the second quarter, suffering Phase III failures in DMD and idiopathic pulmonary fibrosis in June. The latter was especially tough and forced FibroGen to abandon the development of pamrevlumab in this indication. The company now hopes to turn pamrevlumab’s situation around with three upcoming late-stage readouts, including one in ambulatory DMD in the third quarter of this year and two in pancreatic cancer in the first half of 2024. FibroGen’s second pillar is roxadustat, a first-in-class small molecule inhibitor of the HIF-PH protein approved in several territories for the treatment of anemia in chronic kidney disease. The second quarter of 2023 has seen record Roxadustat sales in China, where the drug made a total of $76.4 million, up 44% from its $53.1 million sales figure during the same period the year before. Roxadustat is not approved in the U.S., after the FDA rejected its application in August 2021, citing safety signals. In May 2023, the candidate failed the Phase III MATTERHORN trial in myelodysplastic syndrome. Still, FibroGen is looking to continue to strengthen its roxadustat business, particularly in China, where it is preparing to apply a supplemental New Drug Application for the drug in chemotherapy-induced anemia and expects a potential approval mid-2024. Bolstering FibroGen’s two most mature assets is a robust early-stage oncology pipeline, which includes FG-3246, an anti-CD46 monoclonal antibody that it in-licensed from Fortis Therapeutics in May 2023. The candidate is being developed for metastatic castration-resistant prostate cancer and other solid tumors, and has best-in-class and first-in-class potential. Data FibroGen currently has two Phase I studies for FG-3246, with findings expected starting late this year through 2024. A Phase II study is also being planned with data out 2026. “We believe there are few biotechnology companies of our market cap that have such a compelling mix of commercial, late-stage and early-stage assets,” Wettig said during an investor call Monday, adding that this balance puts FibroGen in a good place to create significant shareholder value moving forward. To support the advancement of its pipeline is FibroGen’s fourth strategic pillar—its cash position. As of June 30, 2023, its cash—defined as cash, cash equivalents, investments, and accounts receivable—was $361.3 million. FibroGen expects its cash, cash equivalents, investments and accounts receivable to support its operations into 2026. The company posted $44.3 million in total revenue in the second quarter of 2023 as compared with $29.8 million during the same period the year before, representing a 49% increase. FibroGen anticipates its operating expense savings to ramp up over the next three quarters. Tristan Manalac is an independent science writer based in Metro Manila, Philippines. He can be reached at tristan@tristanmanalac.com or tristan.manalac@biospace.com.

Topline data from three late-stage pamrevlumab trials expected through 1H 2024, including the Pancreatic Cancer Action Network (PanCAN) Precision PromiseSM Phase 2/3 study in metastatic pancreatic cancer Robust roxadustat volume growth of over 40% in China Entered into exclusive license for FOR46, a first-in-class CD46-targeting antibody-drug conjugate (ADC) for the treatment of metastatic castration-resistant prostate cancer Implemented cost reduction plan extending cash runway into 2026 Thane Wettig appointed Interim CEO SAN FRANCISCO, Aug. 07, 2023 (GLOBE NEWSWIRE) -- FibroGen, Inc., (NASDAQ: FGEN) today reported financial results for the second quarter 2023 and provided an update on the Company’s recent developments. “We saw another record quarter of roxadustat sales in China, and we recently submitted the sNDA to the China Health Authority for chemotherapy-induced anemia,” said Thane Wettig, Interim Chief Executive Officer, FibroGen. “As I assume the leadership role, I am very optimistic about our future. Within the next year, we have three pamrevlumab read-outs and key milestones for our early-stage pipeline, which combined with our deeply experienced team and strong cash position, set us up well for delivering value to patients and shareholders.” Recent Developments and Key Events of Second Quarter 2023: Appointed Thane Wettig as Interim Chief Executive Officer. Entered into exclusive license for FOR46 (now FG-3246), a first-in-class CD46-targeting ADC for the treatment of metastatic castration-resistant prostate cancer (mCRPC). Reported positive topline data from Company’s Phase 3 clinical study of roxadustat for treatment of anemia in patients receiving concurrent chemotherapy treatment for non-myeloid malignancies in China. Filed Supplemental New Drug Application (sNDA) with China Health Authority for roxadustat in patients with chemotherapy-induced anemia. Announced a non-dilutive term loan facility with investment funds managed by Morgan Stanley Tactical Value (MSTV), which resulted in proceeds to FibroGen of $75 million. Reported negative topline results from MATTERHORN Phase 3 clinical study of roxadustat for treatment of anemia in patients with transfusion-dependent lower risk myelodysplastic syndromes (MDS). Reported negative topline results from the LELANTOS-1 Phase 3 study of pamrevlumab for the treatment of non-ambulatory patients with Duchenne muscular dystrophy (DMD). Reported negative topline results from the ZEPHYRUS-1 Phase 3 study of pamrevlumab in patients with idiopathic pulmonary fibrosis (IPF). Discontinued ZEPHYRUS-2 Phase 3 study of pamrevlumab in patients with IPF. Implemented a cost reduction plan, resulting in an expected reduction of total annualized U.S. GAAP expenses of $100-120 million. China Performance: Achieved second quarter net product revenue under U.S. GAAP from the sale of roxadustat in China of $23.9 million compared to $23.3 million in the second quarter of 2022. Achieved second quarter total roxadustat net sales in China1 by FibroGen and the distribution entity (JDE) jointly owned by FibroGen and AstraZeneca of $76.4 million, compared to $53.1 million in the second quarter of 2022, an increase of 44%, driven by over 40% growth in volume. Roxadustat continues to be the number one brand based on value share in the anemia of chronic kidney disease market in China. Upcoming Milestones: Pamrevlumab Topline data from the LELANTOS-2 Phase 3 study of pamrevlumab in ambulatory DMD patients expected in 3Q 2023. Topline data from the LAPIS Phase 3 study of pamrevlumab in locally advanced unresectable pancreatic cancer (LAPC) expected in 1Q 2024. Topline data from the PanCAN Precision PromiseSM Phase 2/3 study of pamrevlumab in metastatic pancreatic cancer expected in 1H 2024. Early-Stage Oncology Pipeline Anticipate the initiation of a Phase 2 trial of FG-3246, a first-in-class ADC targeting a novel epitope on CD46 for mCRPC in 2H 2024. Anticipate the filing of two INDs: FG-3165 (anti-Gal9 antibody) in 1Q 2024 and FG-3175 (anti-CCR8 antibody) in 2H 2024. Financial: Total revenue for the second quarter of 2023 was $44.3 million, as compared to $29.8 million for the second quarter of 2022, an increase of 49%. Net loss for the second quarter of 2023 was $87.7 million, or $0.90 net loss per basic and diluted share, compared to a net loss of $72.6 million, or $0.78 net loss per basic and diluted share one year ago. Research and development expenses for the second quarter of 2023 included a one-time, non-cash charge of acquired in-process research and development expenses of $24.6 million, or $0.25 impact to net loss per basic and diluted share, resulting from the recent exclusive license for FG-3246 from Fortis Therapeutics. At June 30, 2023, cash – defined as cash, cash equivalents, investments, and accounts receivable – was $361.3 million, including proceeds received during the quarter from the Company’s use of its at-the-market equity facility and the closing of the recently announced term loan. We expect our cash, cash equivalents, investments, and accounts receivable to be sufficient to fund our operating plans into 2026. _______________________ 1 Total roxadustat net sales in China includes sales made by the distribution entity as well as FibroGen China’s direct sales, each to its own distributors. The distribution entity jointly owned by AstraZeneca and FibroGen is not consolidated into FibroGen’s financial statements. Conference Call and Webcast Details FibroGen will host a conference call and webcast today, Monday, August 7, 2023, at 5:00 PM Eastern Time to discuss financial results and provide a business update. Interested parties may access a live audio webcast of the conference call via the “Investor Relations” page of the Company’s website at . To access the call by phone, please go to this link (registration link), and you will be provided with dial in details. To avoid delays, we encourage participants to dial in to the conference call fifteen minutes ahead of the scheduled start time. A replay of the webcast will also be available for a limited time at the following link (webcast replay). About Pamrevlumab Pamrevlumab is a potential first-in-class antibody being developed by FibroGen to inhibit the activity of connective tissue growth factor (CTGF), a common factor in fibrotic and proliferative disorders characterized by persistent and excessive scarring that can lead to organ dysfunction and failure. Pamrevlumab is in Phase 3 clinical development for the treatment of locally advanced unresectable pancreatic cancer (LAPC), ambulatory Duchenne muscular dystrophy (DMD), and in Phase 2/3 for the treatment of metastatic pancreatic cancer. The U.S. Food and Drug Administration has granted Orphan Drug Designation, and Fast Track designation to pamrevlumab for the treatment of patients with DMD and LAPC. The U.S. Food and Drug Administration has also granted Rare Pediatric Disease Designation to pamrevlumab for the treatment of patients with DMD. Pamrevlumab has demonstrated a safety and tolerability pro has supported ongoing clinical investigation in DMD, LAPC, and metastatic pancreatic cancer. Pamrevlumab is an investigational drug and not approved for marketing by any regulatory authority. For information about our pamrevlumab studies please visit . About Roxadustat Roxadustat, an oral medication, is the first in a new class of medicines comprising HIF-PH inhibitors that promote erythropoiesis, or red blood cell production, through increased endogenous production of erythropoietin, improved iron absorption and mobilization, and downregulation of hepcidin. Roxadustat is in clinical development for chemotherapy-induced anemia (CIA) in China. Roxadustat is approved in China, Europe, Japan, and numerous other countries for the treatment of anemia of CKD in adult patients on dialysis (DD) and not on dialysis (NDD). Several other licensing applications for roxadustat have been submitted by partners, Astellas and AstraZeneca, to regulatory authorities across the globe, and are currently under review. Astellas and FibroGen are collaborating on the development and commercialization of roxadustat for the potential treatment of anemia in territories including Japan, Europe, Turkey, Russia and the Commonwealth of Independent States, the Middle East, and South Africa. FibroGen and AstraZeneca are collaborating on the development and commercialization of roxadustat for the potential treatment of anemia in the U.S., China, and other markets not licensed to Astellas. About FibroGen FibroGen, Inc. is a biopharmaceutical company committed to discovering, developing, and commercializing a pipeline of first-in-class therapeutics. The Company applies its pioneering expertise in connective tissue growth factor (CTGF) biology and hypoxia-inducible factor (HIF) to advance innovative medicines for the treatment of unmet needs. Pamrevlumab, an anti-CTGF human monoclonal antibody, is in clinical development for the treatment of locally advanced unresectable pancreatic cancer (LAPC), metastatic pancreatic cancer, and ambulatory Duchenne muscular dystrophy (DMD). Roxadustat (爱瑞卓®, EVRENZO™) is currently approved in China, Europe, Japan, and numerous other countries for the treatment of anemia in CKD patients on dialysis and not on dialysis. Roxadustat is in clinical development for chemotherapy-induced anemia (CIA) in China. FibroGen recently expanded its research and development portfolio to include product candidates in the immuno-oncology space along with an exclusive license for FG-3246. For more information, please visit . Forward-Looking Statements This release contains forward-looking statements regarding FibroGen’s strategy, future plans and prospects, including statements regarding the development and commercialization of the company’s product candidates, the potential safety and efficacy pro its product candidates, and its clinical programs. These forward-looking statements include, but are not limited to, statements under the caption “Upcoming Milestones”, statements regarding the expected cost reduction savings, the statement that FibroGen expects its cash, cash equivalents, investments, and accounts receivable to be sufficient to fund its operating plans into 2026, and statements about FibroGen’s plans and objectives and typically are identified by use of terms such as “may,” “will”, “should,” “on track,” “could,” “expect,” “plan,” “anticipate,” “believe,” “estimate,” “predict,” “potential,” “continue” and similar words, although some forward-looking statements are expressed differently. FibroGen’s actual results may differ materially from those indicated in these forward-looking statements due to risks and uncertainties related to the continued progress and timing of its various programs, including the enrollment and results from ongoing and potential future clinical trials, and other matters that are described in FibroGen’s Annual Report on Form 10-K for the fiscal year ended December 31, 2022, and our Quarterly Report on Form 10-Q for the quarter ended June 30, 2023, each as filed with the Securities and Exchange Commission (SEC), including the risk factors set forth therein. Investors are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date of this release, and FibroGen undertakes no obligation to update any forward-looking statement in this press release, except as required by law. Condensed Consolidated Balance Sheets (In thousands) June 30, 2023 December 31, 2022 (Unaudited) (1) Assets Current assets: Cash and cash equivalents $ 152,585 $ 155,700 Short-term investments 183,131 266,308 Accounts receivable, net 25,599 16,299 Inventory 41,179 40,436 Prepaid expenses and other current assets 8,863 14,083 Total current assets 411,357 492,826 Restricted time deposits 2,072 2,072 Long-term investments — 4,348 Property and equipment, net 16,829 20,605 Equity method investment in unconsolidated variable interest entity 6,112 5,061 Operating lease right-of-use assets 74,404 79,893 Other assets 4,353 5,282 Total assets $ 515,127 $ 610,087 Liabilities, stockholders’ equity and non-controlling interests Current liabilities: Accounts payable $ 12,802 $ 30,758 Accrued and other liabilities 162,769 219,773 Deferred revenue 7,490 12,739 Operating lease liabilities, current 11,011 10,292 Total current liabilities 194,072 273,562 Product development obligations 17,365 16,917 Deferred revenue, net of current 165,416 185,722 Operating lease liabilities, non-current 73,813 79,593 Senior secured term loan facilities, non-current 71,408 — Liability related to sale of future revenues, non-current 48,399 49,333 Other long-term liabilities 4,961 6,440 Total liabilities 575,434 611,567 Redeemable non-controlling interests 21,480 — Total stockholders’ deficit attributable to FibroGen (102,274 ) (21,447 ) Nonredeemable non-controlling interests 20,487 19,967 Total deficit (81,787 ) (1,480 ) Total liabilities, redeemable non-controlling interests and deficit $ 515,127 $ 610,087 (1) The condensed consolidated balance sheet amounts at December 31, 2022 are derived from audited financial statements. Condensed Consolidated Statements of Operations (In thousands, except per share data) Three Months Ended June 30, Six Months Ended June 30, 2023 2022 2023 2022 (Unaudited) Revenue: License revenue $ 1,000 $ — $ 7,000 $ 22,590 Development and other revenue 5,158 5,457 9,050 17,219 Product revenue, net 23,889 23,256 48,049 42,137 Drug product revenue, net 14,272 1,093 16,381 8,687 Total revenue 44,319 29,806 80,480 90,633 Operating costs and expenses: Cost of goods sold 5,708 6,809 9,199 11,048 Research and development 95,478 70,963 169,964 159,981 Selling, general and administrative 31,181 30,258 65,455 60,820 Total operating costs and expenses 132,367 108,030 244,618 231,849 Loss from operations (88,048 ) (78,224 ) (164,138 ) (141,216 ) Interest and other, net: Interest expense (3,069 ) (141 ) (5,441 ) (238 ) Interest income and other income (expenses), net 2,652 5,199 3,687 4,876 Total interest and other, net (417 ) 5,058 (1,754 ) 4,638 Loss before income taxes (88,465 ) (73,166 ) (165,892 ) (136,578 ) Provision for income taxes (235 ) 23 (161 ) 136 Investment income in unconsolidated variable interest entity 550 565 1,346 885 Net loss $ (87,680 ) $ (72,624 ) $ (164,385 ) $ (135,829 ) Net loss per share - basic and diluted $ (0.90 ) $ (0.78 ) $ (1.71 ) $ (1.46 ) Weighted average number of common shares used to calculate net loss per share - basic and diluted 97,729 93,475 96,218 93,260 Contacts: FibroGen, Inc. Investors: David DeLucia, CFA Head of Corporate FP&A / Investor Relations ddelucia@fibrogen.com Media: Michael Szumera mszumera@fibrogen.com