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Spruce Biosciences Reports First Quarter 2025 Financial Results and Provides Corporate Updates Acquisition of Tralesinidase Alfa Enzyme Replacement Therapy (TA-ERT) for the Treatment of Sanfilippo Syndrome Type B (MPS II

Key Takeaway: Spruce Biosciences, Inc. has reported its financial results for Q1 2025 and announced key corporate updates regarding the acquisition of Tralesinidase Alfa Enzyme Replacement Therapy (TA-ERT) for Sanfilippo Syndrome Type B. The company plans to submit a Biologics License Application (BLA) to the U.S. FDA in the first half of 2026, reflecting a significant step towards addressing an unmet need in treating MPS IIIB. Financially, Spruce reported an increased net loss compared to the previous year, although it also highlighted progress in regulatory designations for its therapy. Future studies and operational plans aim to secure accelerated approval and enhance patient access to their therapies.
Price reaction · baseline $5.3925 (2025-05-05 close) · hit after-hours · clean, no other SPRB news in the window
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Market Sentiment Analysis

POSITIVE FACTORS

  • Acquisition of TA-ERT potentially addresses significant unmet medical needs for MPS IIIB.
  • Anticipated BLA submission for TA-ERT in the first half of 2026.
  • Fast Track, Rare Pediatric Disease, and Orphan Drug Designations received for TA-ERT.
  • Focus on pursuing accelerated approval indicates proactive regulatory strategy.

CONCERNS & RISKS

  • Net loss increased from $11.6 million in 2024 to $14.0 million in 2025.
  • Operating expenses remain high, despite minor reductions in G&A expenses.
  • Reliance on forward-looking statements that involve various risks and uncertainties.

BiopharmaWatch Analysis

From our catalyst data and publicly available data · not financial advice
Best trade, last catalyst
+42%
120-day peak, hindsight
Typical move
11.9%
average across 2 past catalysts
Cash runway
~13 mo
Low dilution risk
Lead asset
SPR001
Phase 2 · Congenital Adrenal Hyperplasia

Full Press Release Details

Spruce Biosciences Reports First Quarter 2025 Financial Results and Provides Corporate Updates
Acquisition of Tralesinidase Alfa Enzyme Replacement Therapy (TA-ERT) for the Treatment of Sanfilippo Syndrome Type B (MPS IIIB)
Biologics License Application (BLA) Submission to U.S. FDA for TA-ERT Expected in 1H 2026
South San Francisco, Calif. May 6, 2025 Spruce Biosciences, Inc. (OTC: SPRB), a late-stage biopharmaceutical company focused on developing and commercializing novel therapies for neurological disorders with significant unmet medical need, today reported financial results for the first quarter ended March 31, 2025 and provided corporate updates.
With no FDA-approved treatments currently available to treat MPS IIIB, TA-ERT has the potential to be a groundbreaking advancement for patients and families impacted by this devastating disease, said Javier Szwarcberg, M.D., M.P.H., Chief Executive Officer of Spruce. Across the landscape, this is an incredibly important and exciting time for patients and families affected by neuropathic MPS diseases. Looking ahead, we remain focused on pursuing accelerated approval of TA-ERT and filing the BLA in the first half of 2026. We also plan to initiate a confirmatory study prior to potential accelerated approval of TA-ERT and enable expanded access programs to ensure that patients have access to therapy.
-TA-ERT for the Treatment of MPSIIIB. Spruce entered into an Asset Purchase Agreement under which the company acquired an exclusive worldwide license agreement for TA-ERT and other enzyme replacement therapy products. TA-ERT is a fusion protein comprised of recombinant human alpha-N-acetylglucosaminidase (rhNAGLU) with modified human insulin-like growth factor 2 via an amino acid linker. TA-ERT is intended as an enzyme replacement therapy for the treatment of patients with MPS IIIB who lack rhNAGLU enzyme activity. In March 2024, in a Type C meeting with the FDA, the FDA confirmed that HS-NRE is deemed to be a surrogate biomarker reasonably likely to predict clinical benefit and could serve as a basis for accelerated approval. The FDA also confirmed that the completed clinical and non-clinical studies of TA-ERT were sufficient for a BLA submission and provided guidance around key design elements of a confirmatory trial, which must be initiated prior to potential accelerated approval of TA-ERT. TA-ERT has received Fast Track Designation, Rare Pediatric Disease Designation, and Orphan Drug Designation in the U.S. and EU. Spruce intends to submit the BLA of TA-ERT for the treatment of MPS IIIB in the first half of 2026.
-Tildacerfont and Cortibon for the Treatment of MDD. Spruce entered into a license, development and option agreement (the HMNC Agreement ) with HMNC Holding GmbH ( HMNC ). Under the terms of the HMNC Agreement, HMNC will fund and conduct a Phase 2 proof-of-concept study of tildacerfont, a potent and highly selective, oral, small-molecule antagonist of the CRF1 receptor, in patients with MDD who will be screened using Cortibon, HMNC's proprietary genetic test. HMNC has initiated the Phase 2 TAMARIND study, which will explore the efficacy of 400mg twice-daily tildacerfont versus placebo in improving depressive symptoms in MDD patients. Topline results from TAMARIND are anticipated in the first half of 2026.
First Quarter 2025 Financial Results
-Cash and Cash Equivalents: Cash and cash equivalents as of March 31, 2025 were $25.6 million. Cash and cash equivalents are expected to allow the company to fund its current operating plan through the end of 2025.
-Research and Development (R&D) Expenses: R&D expenses for the three months ended March 31, 2025 were $10.8 million compared to $10.3 million for the same period in 2024. R&D expenses for the three months ended March 31, 2025 include $5.7 million in costs related to the acquisition of SPR202, an anti-corticotrophin releasing hormone monoclonal antibody for the treatment of congenital adrenal hyperplasia.
-General and Administrative (G&A) Expenses: G&A expenses for the three months ended March 31, 2025 were $3.7 million compared to $4.3 million for the same period in 2024, primarily driven by a decrease in stock-based compensation expense.
-Total Operating Expenses: Total operating expenses for the three months ended March 31, 2025 were $14.5 million compared to $14.6 million for the same period in 2024. Operating expenses include non-cash stock-based
compensation expenses of $0.5 million for the three months ended March 31, 2025 compared to $1.6 million for the same period in 2024.
-Net Loss: Net loss for the three months ended March 31, 2025 was $14.0 million compared to $11.6 million for the same period in 2024.
About Spruce Biosciences
Forward-Looking Statements
Statements contained in this press release regarding matters that are not historical facts are forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Such forward-looking statements include statements regarding, among other things, the ability to seek accelerated approval of TA-ERT for MPS IIIB based on existing clinical data; the anticipated timing and conduct of Spruce's confirmatory trial for TA-ERT; the timing and likelihood of regulatory filings and approvals for TA-ERT, including the anticipated BLA Submission of TA-ERT for MPS IIIB in the first half of 2026; Spruce's expectation that topline results from the TAMARIND study will be available in the first half of 2026; and Spruce's intended focus on serious diseases with significant unmet medical need and clear biology, are forward-looking statements. Because such statements are subject to risks and uncertainties, actual results may differ materially from those expressed or implied by such forward-looking statements. Words such as anticipate , will , potential , intend , expect and similar expressions are intended to identify forward-looking statements. These forward-looking statements are based upon Spruce's current expectations and involve assumptions that may never materialize or may prove to be incorrect. Actual results could differ materially from those anticipated in such forward-looking statements as a result of various risks and uncertainties, which include, without limitation, risks and uncertainties associated with Spruce's business in general, the impact of geopolitical and macroeconomic events, and the other risks described in Spruce's filings with the U.S. Securities and Exchange Commission. All forward-looking statements contained in this press release speak only as of the date on which they were made and are based on management's assumptions and estimates as of such date. Spruce undertakes no obligation to update such statements to reflect events that occur or circumstances that exist after the date on which they were made, except as required by law.
SPRUCE BIOSCIENCES, INC.
CONDENSED BALANCE SHEETS
(in thousands, except share and per share amounts)
March 31, December 31,
2025 2024
ASSETS
Current assets:
Cash and cash equivalents $ 25,615 $ 38,753
Prepaid expenses 2,899 3,177
Other current assets 2,062 2,276
Total current assets 30,576 44,206
Right-of-use assets 869 934
Other assets 204 69
Total assets $ 31,649 $ 45,209
LIABILITIES AND STOCKHOLDERS' EQUITY
Current liabilities:
Accounts payable $ 1,879 $ 1,295
Accrued expenses and other current liabilities 12,442 12,329
Term loan, current portion 1,345 1,622
Total current liabilities 15,666 15,246
Lease liabilities, net of current portion 659 736
Term loan, net of current portion 124
Other liabilities 282
Total liabilities 16,325 16,388
Commitments and contingencies
Stockholders' equity:
Preferred stock, $0.0001 par value; 10,000,000 shares authorized and no shares issued or outstanding as of March 31, 2025 and December 31, 2024
Common stock, $0.0001 par value; 200,000,000 shares authorized as of March 31, 2025 and December 31, 2024; 42,231,285 shares issued and outstanding as of March 31, 2025 and December 31, 2024 4 4
Additional paid-in capital 279,629 279,085
Accumulated deficit (264,309 ) (250,268 )
Total stockholders' equity 15,324 28,821
Total liabilities and stockholders' equity $ 31,649 $ 45,209
SPRUCE BIOSCIENCES, INC.
CONDENSED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS
(in thousands, except share and per share amounts)
Three Months Ended March 31,
2025 2024
Collaboration revenue $ $ 2,002
Operating expenses:
Research and development 10,837 10,317
General and administrative 3,655 4,318
Total operating expenses 14,492 14,635
Loss from operations (14,492 ) (12,633 )
Interest expense (36 ) (97 )
Interest and other income, net 487 1,105
Net loss and comprehensive loss (14,041 ) (11,625 )
Net loss per share, basic and diluted $ (0.32 ) $ (0.28 )
Weighted-average shares of common stock outstanding, basic and diluted 43,944,946 41,096,231
Spruce Biosciences, Inc.

Frequently Asked Questions

What is TA-ERT used for?

TA-ERT is an enzyme replacement therapy for treating Sanfilippo Syndrome Type B.

When will Spruce submit the BLA for TA-ERT?

The BLA submission for TA-ERT is expected in the first half of 2026.

What is the R&D expense for Q1 2025?

R&D expenses for the first quarter of 2025 were $10.8 million.

What is the net loss reported for Q1 2025?

The net loss for the first quarter of 2025 was $14.0 million.

What notable designations has TA-ERT received?

TA-ERT has received Fast Track, Rare Pediatric Disease, and Orphan Drug designations.

Last updated: May 6, 2025