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PRESS-RELEASE ·Filed May 22, 2026

ASMB

Assembly Biosciences, Inc.
NEUTRAL
Impact 5/10
Horizonmonths Processed5mo ago WireGlobeNewswire
Press release · FDA
Actionable Insight • Neutral

This is a pipeline-expansion press release with long timeframes (HDV Phase 2 still 6+ months away; PBC/PSC Phase 2 >12 months away). The news is modestly positive for the scientific thesis but does not change near-term valuation. Monitor for HDV Phase 2 data in Q4 2026 as the next hard catalyst.

DirectionNeutral
Confidencemedium
Horizonmonths
Final: all horizons settled through T+60d ⚠ clustered
ASMB ▲ +13.37% at T+60d
NEUTRAL call +13.37% · α vs SPY +10.18% · entry $28.34 → $32.13
Entry = T+0 close
May 22, 2026
via day close
T+1d
+1.45%
call +1.45% · α +0.86%
$28.75
settled 5mo ago
T+5d
-5.01%
call -5.01% · α -6.67%
$26.92
settled 5mo ago
T+20d
-12.01%
call -12.01% · α -10.60%
$24.94
settled 4mo ago
T+60d
+13.37%
call +13.37% · α +10.18%
$32.13
settled 2mo ago

Price Chart

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Executive Summary

Assembly Bio is expanding ABI-6250, an oral NTCP inhibitor in Phase 1a for HDV, into cholestatic liver diseases (PBC/PSC) with a targeted Phase 2 basket study in Q1 2027. While this broadens the pipeline into a large unmet-need market (PSC has no approved therapies), the program is pre-clinical for these indications with no safety/efficacy data yet. The company's HDV Phase 2 is still slated for Q4 2026. No financial data, partner updates, or near-term catalysts were provided.

Key Facts

  • ABI-6250 (NTCP inhibitor) expansion into PBC and PSC, with Phase 2 basket study expected Q1 2027
  • Existing Phase 1a completed in healthy volunteers, showing target engagement (dose-dependent bile acid elevations)
  • HDV Phase 2 study still on track for Q4 2026
  • Pre-IND meeting with FDA held for cholestatic liver disease program; minutes pending but company calls it constructive
  • PSC has zero approved therapies; PBC has multiple treatments but high rate of inadequate response
  • No new financial data, partner updates (Gilead collab), or changes to cash runway disclosed

Financial Impact

Pre-revenue clinical-stage biotech; no financial metrics disclosed. Pipeline expansion adds optionality but no near-term revenue or cost data.

Risk Factors

  • ABI-6250 has not been approved anywhere and has no clinical efficacy data in cholestatic diseases
  • Phase 2 in PBC/PSC not yet initiated; regulatory feedback pending from FDA meeting minutes
  • Company may require additional capital to fund expanded pipeline — cash position not disclosed

Market Snapshot

Exchange
Nasdaq
Sector
Pharmaceutical Preparations
Analyst Consensus
90% bullish (10 analysts)

Investment Themes

Documents Analyzed

This report is based on 1 press release from GlobeNewswire.

DocumentAccession Number
PRESS-RELEASE Data (Synthetic)press-3300036
10 reports for ASMB
Performance horizon
75% Hit rate @ T+5 3 of 4 directional calls Went positive at some point 4 of 4 best @ T+20▲ +9.08%May 22, 2026
Filters
Rows
Reports for ASMB, sortable and filterable
TypeNow
Aug 15, 2026
10w ago
Institutional Cluster
NEUTRAL ★ 4/10
$30.01 $35.28▲ +17.56%▲ +18.75%$20.30 (−32.36%)
Aug 13, 2026
10w ago
Press Release
BULLISH ★ 6/10
$32.95 $34.38▲ +4.34%▲ +5.71%$20.30 (−38.39%)
Jun 11, 2026
19w ago
Institutional Cluster
NEUTRAL ★ 3/10
$22.53 $24.15▲ +7.19%▲ +6.76%$20.30 (−9.90%)
Jun 5, 2026
20w ago
8-K
NEUTRAL ★ 2/10
$22.56 $23.34▲ +3.48%▲ +1.37%$20.30 (−10.00%)
May 22, 2026
22w ago
424B5
BEARISH ★ 6/10
$28.75 $26.92▲ +6.37%▲ +7.45%$20.30 (+29.39%)
May 22, 2026
22w ago
8-K
NEUTRAL ★ 5/10
$28.34 $26.92▼ −5.01%▼ −6.67%$20.30 (−28.37%)
May 22, 2026
22w ago
Press Release
NEUTRAL ★ 5/10
$28.34 $26.92▼ −5.01%▼ −6.67%$20.30 (−28.37%)
May 7, 2026
24w ago
Press Release
BULLISH ★ 6/10
$29.74 $30.30▲ +1.88%▲ +0.42%$20.30 (−31.74%)
Mar 30, 2026
30w ago
EFFECT
NEUTRAL ★ 3/10
$26.64 $28.53▲ +7.09%▲ +2.79%$20.30 (−23.80%)
Mar 19, 2026
31w ago
Press Release
BULLISH ★ 8/10
$28.46 $27.70▼ −2.67%▼ −0.52%$20.30 (−28.67%)
Showing 10 of 10

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Report published May 22, 2026