Assembly Biosciences Reports Positive Interim Results from Phase 1b Clinical Studies of Long-Acting Helicase-Primase Inhibitor Candidates ABI-1179 and ABI-5366 Showing Reductions in Viral Shedding Rate and Virologically Confirmed Genital Lesion Rate in Recurrent Genital Herpes

– 98% reduction in HSV-2 shedding rate, >99% reduction in high viral load shedding rate and 91% reduction in virologically confirmed genital lesion rate observed in 50 mg weekly oral dose of ABI-1179, exceeding expectations for the study –

GlobeNewsWire • Dec 8, 2025

Assembly Biosciences, Inc. (ASMB) Discusses Positive Interim Results for ABI-1179 and ABI-5366 in Recurrent Genital Herpes Phase 1b Studies Transcript

Assembly Biosciences, Inc. (ASMB) Discusses Positive Interim Results for ABI-1179 and ABI-5366 in Recurrent Genital Herpes Phase 1b Studies Transcript

Seeking Alpha • Dec 9, 2025

Assembly Biosciences Reports Third Quarter 2025 Financial Results and Recent Updates

– Released positive Phase 1b interim results for long-acting helicase-primase inhibitor candidate ABI-5366 showing significant reductions in viral shedding rate and genital lesion rate in recurrent genital herpes –

GlobeNewsWire • Nov 10, 2025

Assembly Biosciences Presents Positive Phase 1b Data for Next-Generation Capsid Assembly Modulator ABI-4334 at AASLD The Liver Meeting®

– Phase 1b data demonstrating favorable safety and tolerability profile and potent reductions in viral nucleic acids highlighted in late-breaking poster presentation – SOUTH SAN FRANCISCO, Calif., Nov. 07, 2025 (GLOBE NEWSWIRE) -- Assembly Biosciences, Inc. (Nasdaq: ASMB), a biotechnology company developing innovative therapeutics targeting serious viral diseases, today announced Phase 1b clinical data for its next-generation investigational capsid assembly modulator (CAM) ABI-4334 featured in a late-breaking poster presentation at the American Association for the Study of Liver Diseases (AASLD), The Liver Meeting®.

GlobeNewsWire • Nov 7, 2025

Assembly Biosciences Announces Upcoming Investor Conference Participation

SOUTH SAN FRANCISCO, Calif., Oct. 14, 2025 (GLOBE NEWSWIRE) -- Assembly Biosciences, Inc. (Nasdaq: ASMB), a biotechnology company developing innovative therapeutics targeting serious viral diseases, today announced that the company will participate in fireside chats at two upcoming investor conferences.

GlobeNewsWire • Oct 14, 2025

Assembly Biosciences Presents Interim Phase 1b Data for HSV Helicase-Primase Inhibitor Candidate ABI-5366 at the 38th Congress of the International Union Against Sexually Transmitted Infections (IUSTI)- Europe

– Late-breaking oral presentation highlights interim Phase 1b data reported earlier this year for two cohorts in participants with recurrent genital herpes –  – Statistically significant reductions in HSV-2 shedding rate, high viral load shedding rate and genital lesion rate observed in the cohort evaluating 350 mg weekly oral dose compared to placebo – – Interim data evaluating a monthly dosing regimen of ABI-5366 and weekly dosing for second HSV helicase-primase inhibitor candidate ABI-1179 expected to be shared later this fall – SOUTH SAN FRANCISCO, Calif., Oct. 10, 2025 (GLOBE NEWSWIRE) -- Assembly Biosciences, Inc. (Nasdaq: ASMB), a biotechnology company developing innovative therapeutics targeting serious viral diseases, today announced that interim Phase 1b clinical data for its long-acting herpes simplex virus (HSV) helicase-primase inhibitor candidate ABI-5366 are featured in a late-breaking oral presentation during the 38th Congress of the International Union Against Sexually Transmitted Infections (IUSTI)- Europe, taking place October 9-11, 2025, in Athens, Greece.

GlobeNewsWire • Oct 10, 2025

4 Biotechnology Stocks That Outshine In Momentum Amid Strong Technicals

Four biotechnology stocks have surged into the top 10th percentile for momentum ranking, demonstrating remarkable week-on-week technical strength and strong price action.

Benzinga • Sep 29, 2025

Assembly Biosciences (ASMB) Surges 9.8%: Is This an Indication of Further Gains?

Assembly Biosciences (ASMB) was a big mover last session on higher-than-average trading volume. The latest trend in earnings estimate revisions might not help the stock continue moving higher in the near term.

Zacks Investment Research • Sep 22, 2025

Assembly Biosciences Reports Positive Interim Results from Phase 1b Clinical Study of Long-Acting Helicase-Primase Inhibitor Candidate ABI-5366 Showing Reductions in Viral Shedding Rate and Genital Lesion Rate in Recurrent Genital Herpes

– 94% reduction in HSV-2 shedding rate and 98% reduction in high viral load shedding rate, both statistically significant, observed in cohort evaluating 350 mg weekly oral dose compared to placebo over 29-day evaluation period – – 94% reduction in genital lesion rate, also statistically significant, observed with 350 mg weekly oral dose compared to placebo over same period – – Favorable safety and tolerability profile observed in the first two cohorts evaluating weekly oral doses of ABI-5366 – SOUTH SAN FRANCISCO, Calif., Aug. 08, 2025 (GLOBE NEWSWIRE) -- Assembly Biosciences, Inc. (Nasdaq: ASMB), a biotechnology company developing innovative therapeutics targeting serious viral diseases, today announced positive interim antiviral activity, clinical outcomes, safety and pharmacokinetic (PK) results from a Phase 1b study evaluating ABI-5366, an investigational long-acting herpes simplex virus (HSV) helicase-primase inhibitor, in participants seropositive for HSV type 2 (HSV-2) with recurrent genital herpes.

GlobeNewsWire • Aug 8, 2025

Assembly Biosciences Announces Pricing of $175 Million in Equity Financings

SOUTH SAN FRANCISCO, Calif., Aug. 08, 2025 (GLOBE NEWSWIRE) -- Assembly Biosciences, Inc. (“Assembly Bio”) (Nasdaq: ASMB), a biotechnology company developing innovative therapeutics targeting serious viral diseases, today announced the pricing of an underwritten, registered offering (the “offering”) of an aggregate of 5,591,840 shares of common stock and pre-funded warrants to purchase up to 1,040,820 shares of common stock, together with accompanying Class A and Class B warrants to purchase up to an aggregate of 6,632,660 shares of common stock at a combined price per share of common stock and accompanying Class A warrant and Class B warrant of $19.60 and a combined price per pre-funded warrant and accompanying Class A warrant and Class B warrant of $19.599. Each pre-funded warrant will have a nominal exercise price of $0.001 per share of common stock and will be immediately exercisable. Each accompanying Class A warrant will have an exercise price of $21.60 per share of common stock, will be immediately exercisable and will expire on the earlier of (i) five years from the date of issuance (August 11, 2030) and (ii) the date that is 30 days after the public announcement that Assembly Bio has completed enrollment (of at least 200 patients total) for its Phase 2 clinical study evaluating ABI-5366 vs. valacyclovir. Each accompanying Class B warrant will have an exercise price of $21.60 per share of common stock, will be exercisable on or after November 15, 2026 and will expire on December 31, 2026, provided that each Class B warrant will automatically terminate in full and be extinguished and shall no longer be exercisable in the event that Assembly Bio publicly announces prior to November 15, 2026 that it has received at least $75.0 million in the aggregate of non-dilutive capital in connection with a collaboration agreement.

GlobeNewsWire • Aug 8, 2025