ETNB insider trading
89bio, Inc.: insider trade history from SEC Form 4 filings.
ETNB insider activity at a glance
FilingIQ tracks 292 insider transactions for ETNB in filings since Nov 13, 2019. The most recent transaction is dated Oct 30, 2025.
Across the full history, 35 open-market purchases
and 46 open-market sales
were filed under transaction codes P and S respectively. Compensatory share awards
(code A) and option exercises (code M) are tracked separately and not counted here.
The average FilingIQ composite score on ETNB insider trades is 61.4/100, produced by FilingIQ's multi-factor Form 4 model. Model framework documented at methodology.
Latest ETNB Form 4 filings
Most recent disclosures. Sign up to filter by score, transaction code, or insider role.
Frequently asked
- How many insider trades does FilingIQ track for ETNB?
- FilingIQ tracks 292 Form 4 insider transactions for ETNB (89bio, Inc.), covering filings from Nov 13, 2019 onwards. 0 of those are dated within the last 90 days.
- Are ETNB insiders net buyers or net sellers?
- Across the full Form 4 history for ETNB, 35 transactions (12%) were open-market purchases and 46 (16%) were open-market sales. Compensatory awards and option exercises are filtered out of these counts.
- Where does ETNB insider data come from?
- Every transaction shown on this page is sourced directly from SEC EDGAR Form 4 filings. FilingIQ normalises insider identity across reporting variations and scores discretionary open-market purchases and sales on its multi-factor composite model.
Methodology & sources
Every ETNB insider transaction shown on FilingIQ is parsed directly from a public SEC Form 4 XML filing. Insider identity is normalised across reporting variants (CIK changes, name spellings, related-party indirect holdings). The FilingIQ composite score is documented in full on the team page and algo disclosure. Not investment advice; see disclaimer.