89bio, Inc. (ETNB) Insider Trading & SEC Filings

Updated Jul 16, 2026 · Last SEC filing 2025-11-03

89bio, Inc. (ETNB) — no SEC Form 4 insider filings recorded in the last 90 days. InsiderAlpha tracks every ETNB SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.

About 89bio, Inc. (ETNB)

SEC CIK	0001785173

Recent ETNB Insider Transactions (Form 4)

Date	Insider	Role	Transaction	Shares	Price	Value	Filing
2025-10-30	Hayden Michael R	Insider	J — Other acquisition / disposition	80.9K	—	—	SEC
2025-10-30	Mansbach Harry H	Chief Medical Officer	A — Grant or award	50.0K	$0.00	—	SEC
2025-10-30	McWherter Charles	Insider	J — Other acquisition / disposition	25.0K	—	—	SEC
2025-10-30	Mansbach Harry H	Chief Medical Officer	J — Other acquisition / disposition	352.7K	—	—	SEC
2025-10-30	Sarena Francis Willard	Chief Operating Officer	J — Other acquisition / disposition	75.3K	—	—	SEC
2025-10-30	Le-Nguyen Quoc	See Remarks	J — Other acquisition / disposition	13.7K	—	—	SEC
2025-10-30	PALEKAR ROHAN	Chief Executive Officer	A — Grant or award	125.0K	$0.00	—	SEC
2025-10-30	PALEKAR ROHAN	Chief Executive Officer	J — Other acquisition / disposition	934.3K	—	—	SEC
2025-10-30	Le-Nguyen Quoc	See Remarks	A — Grant or award	50.0K	$0.00	—	SEC
2025-10-30	Le-Nguyen Quoc	See Remarks	J — Other acquisition / disposition	351.7K	—	—	SEC
2025-10-30	Martins Ryan	Chief Financial Officer	A — Grant or award	35.0K	$0.00	—	SEC
2025-10-30	Martins Ryan	Chief Financial Officer	J — Other acquisition / disposition	374.3K	—	—	SEC
2025-10-30	Martins Ryan	Chief Financial Officer	A — Grant or award	35.0K	$0.00	—	SEC
2025-10-30	Martins Ryan	Chief Financial Officer	J — Other acquisition / disposition	374.3K	—	—	SEC
2025-10-30	Hayden Michael R	Insider	J — Other acquisition / disposition	104.0K	—	—	SEC

All transactions sourced from SEC EDGAR Form 4 filings for 89bio, Inc. (ETNB). Updated in real time as new filings are submitted to the SEC.

Recent Insider Filings

2025-11-03 — RA CAPITAL MANAGEMENT, L.P. (Insider)
2025-10-31 — LAPORTE KATHLEEN (Insider)
2025-10-31 — Hayden Michael R (Insider)
2025-10-31 — Martins Ryan (Chief Financial Officer)
2025-10-31 — Martins Ryan (Chief Financial Officer)

Form 4 Transaction Code Reference

SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in ETNB insider filings:

P	Open-market purchase by the insider
S	Open-market sale by the insider
A	Grant, award, or other acquisition from the issuer
M	Exercise or conversion of derivative security (e.g. options)
F	Payment of exercise price or tax liability via share withholding
G	Bona-fide gift of securities
D	Disposition to the issuer (e.g. share buyback participation)
J	Other acquisition or disposition
X	Exercise of in-the-money or at-the-money derivative security
C	Conversion of derivative security
V	Transaction voluntarily reported earlier than required

ETNB Insider Trading — FAQ

What is the latest insider trade for ETNB?: 89bio, Inc. (ETNB) had 0 insider filings in the last 90 days, with the most recent on 2025-11-03. InsiderAlpha tracks every Form 4, 10-K, 10-Q, and 8-K filing in real time.
How many insiders are buying ETNB stock?: 0 insider purchases of ETNB were filed in the last 90 days.
How many insiders are selling ETNB stock?: 0 insider sales of ETNB were filed in the last 90 days.
Where can I see ETNB SEC filings (Form 4, 10-K, 10-Q, 8-K)?: InsiderAlpha aggregates every ETNB SEC filing — Form 4 insider transactions, 10-K and 10-Q quarterly reports, and 8-K material event disclosures — in one timeline.

Learn More

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