Also, in October, we were one of five companies to make a formal presentation at IDWeek in Atlanta at the session entitled New Antimicrobials in the Pipeline. Also presented were new colonic microbiome data from a state-of-the-art mouse infection model showing the potential microbiome-sparing class effect of representative compounds from our DNA Pol IIIc inhibitor preclinical pipeline.

Gary further stated, "These data indicate a low probability for DNA Pol IIIc inhibitors to increase the risk of causing a C. Now back to our CFO, Rob Shawah, to guide you through the highlights of our financial results for the full year and fourth quarter ended December 31, 2025.

The government apparently is looking for a new pipeline in that area. They'll probably, and we believe they're already working on a guidance for industry to clarify some of the questions and lay down the parameters for what that would be.

What went well
  • Launched a new ibezapolstat clinical program in recurrent CDI (announced March 9, 2026) that could shift treatment and prevention of rCDI from two agents to one, opening a second, LPAD-based path to FDA approval alongside the acute-CDI Phase 3 program.
  • Ended 2025 with $7.6 million in cash (up from $3.7 million a year earlier) and cut full-year spending sharply, with R&D down to $1.8 million (from $5.4 million) and G&A down to $6.3 million (from $8.7 million); the Q4 net loss narrowed to $1.6 million.
  • Highlighted best-in-class Phase 2 efficacy - a 96% clinical cure rate in 26 patients with no recurrence in cured patients (including 5 of 5 followed out to three months) - as the foundation for the new rCDI trial.
  • Benefited from a potential regulatory tailwind: the FDA's new one-trial default standard (published in NEJM and co-authored by the FDA Commissioner) could let Acurx seek approval in the broader CDI population with a single pivotal trial, and a new USPTO composition-of-matter/method-of-use patent (to December 2039) was granted in February 2026.
  • Emphasized U.S.-based manufacturing of ibezapolstat API and packaged product with 48+ months of stability, positioning it well for BARDA discussions and potential government stockpiling.
What went wrong
  • The company remains pre-revenue and thinly capitalized, with $7.6 million of cash against a new rCDI trial estimated to cost $4-5 million and a Phase 3 acute-CDI program that still requires a partner or non-dilutive funding.
  • Full enrollment of the 20-patient open-label rCDI pilot is expected to take roughly 12-15 months after a Q4 2026 first-patient start, deferring meaningful data and the subsequent Phase 3.
  • The favorable one-trial FDA standard is not yet formalized for C. difficile specifically, leaving the ultimate Phase 3 design and requirements subject to FDA clarification.

Guidance Changes

MetricPeriodCurrent guidance
Cash positionAs of Dec 31, 2025$7.6M in cash (vs $3.7M at Dec 31, 2024); ~$7-8M remaining on the ELOC
rCDI open-label pilot trial202620 patients (3+ prior episodes), 14-day treatment, 8-week primary endpoint, 6-month follow-up; ~$4-5M cost; first patient Q4 2026, full enrollment ~12-15 months later
rCDI Phase 3 registration trialAfter pilotActive-controlled pivotal trial (~360-400 patients) planned under the FDA Limited Population Pathway (LPAD)
Acute-CDI Phase 3PendingReady to advance internationally; ~474-patient non-inferiority design that may become a single pivotal trial under FDA's new one-trial standard
Full-year 2025 net lossFY2025$8.0M (vs $14.1M in FY2024)

Performance Breakdown

MetricYoYNote
Research & development expense (Q4 / FY) Q4 $0.3M (vs $0.8M); FY $1.8M (vs $5.4M) Lower manufacturing and consulting costs; prior year carried Phase 2b/Phase 3 preparation spend.
General & administrative expense (Q4 / FY) Q4 $1.3M (vs $2.0M); FY $6.3M (vs $8.7M) Lower professional fees, share-based compensation and compensation costs, partly offset by higher legal costs.
Net loss (Q4 / FY) Q4 $1.6M (vs $2.8M); FY $8.0M (vs $14.1M) Continued operating-cost discipline.
Diluted net loss per share (Q4) $(0.73) (vs $(3.29)) Smaller loss on ~2.35M shares outstanding at year-end.
Cash, equivalents & investments $7.6M ~$4M of full-year ELOC proceeds; ~$1.5M raised in Q4.

Earnings Call Themes & Trends

TopicPrevious mentionCurrent periodTrend
Clinical strategyAcute-CDI Phase 3 focusAdded a recurrent-CDI (rCDI) program via LPAD - two shots on goalUp
Regulatory environmentTwo-trial standardFDA moving toward a one-trial default that could apply to CDIUp
Funding / manufacturingSeeking a partnerU.S.-based manufacturing and stability supporting BARDA / stockpiling discussionsSteady

More on Acurx Pharmaceuticals, Inc.

Reported 2026-03-13 · figures from the Acurx Pharmaceuticals, Inc. Q4 2025 earnings call.

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