89bio, Inc. (ETNB)
Data as of , from SEC Form 4 filings.
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- Quoc Le-Nguyen - OfficerOpen-market sale$115K
Rohan Palekar - OfficerOpen-market purchase$39K
About 89bio, Inc. (ETNB)
89bio, Inc. files with the SEC under CIK 0001785173 and is classified as pharmaceutical preparations. It is grouped with Health Care companies on this site.
ETNB Form 4 activity by transaction type, last 90 days
No Form 4 activity for ETNB in the last 90 days.
ETNB insider transactions (Form 4)
12230 Form 4 filings on record, the earliest from Nov 1, 2024, newest first.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
| RA CAPITAL MANAGEMENT, L.P. | Derivative | Common Stock | 335,364 | - footnote F1,F2 | - | |
| RA CAPITAL MANAGEMENT, L.P. | Derivative | Pre-Funded Warrants (Right to Buy) | 4,331,081 | $0.00 | - | |
| RA CAPITAL MANAGEMENT, L.P. | Derivative | Stock Option (Right to Buy) | 7,000 | $0.00 | - | |
| RA CAPITAL MANAGEMENT, L.P. | Derivative | Stock Option (Right to Buy) | 7,000 | $0.00 | - | |
| RA CAPITAL MANAGEMENT, L.P. | Derivative | Stock Option (Right to Buy) | 12,500 | $0.00 | - | |
| RA CAPITAL MANAGEMENT, L.P. | Derivative | Stock Option (Right to Buy) | 25,000 | $0.00 | - | |
| RA CAPITAL MANAGEMENT, L.P. | Derivative | Stock Option (Right to Buy) | 27,400 | $0.00 | - | |
| RA CAPITAL MANAGEMENT, L.P. | Derivative | Stock Option (Right to Buy) | 45,150 | $0.00 | - | |
| RA CAPITAL MANAGEMENT, L.P. | Derivative | Stock Option (Right to Buy) | 56,400 | $0.00 | - | |
| RA CAPITAL MANAGEMENT, L.P. | Derivative | Common Stock | 19,554,319 | - footnote F1,F2 | - | |
| ||||||
| Ryan Martins - Officer | Derivative | Stock Option (Right to Buy) | 48,102 | $0.00 | - | |
| Ryan Martins - Officer | Derivative | Stock Option (Right to Buy) | 110,000 | $0.00 | - | |
| Ryan Martins - Officer | Derivative | Stock Option (Right to Buy) | 175,000 | $0.00 | - | |
| Ryan Martins - Officer | Derivative | Stock Option (Right to Buy) | 300,000 | $0.00 | - | |
| Ryan Martins - Officer | Grant or award | Common Stock | 35,000 footnote F1 | $0.00 | - | |
| Ryan Martins - Officer | Other | Common Stock | 374,295 footnote F2,F3 | - footnote F2,F3 | - | |
| Ryan Martins - Officer | Derivative | Stock Option (Right to Buy) | 47,500 | $0.00 | - | |
| Ryan Martins - Officer | Derivative | Stock Option (Right to Buy) | 57,500 | $0.00 | - | |
| ||||||
| Edward Morrow Atkinson III | Derivative | Stock Option (Right to Buy) | 20,000 | $0.00 | - | |
| Edward Morrow Atkinson III | Derivative | Stock Option (Right to Buy) | 27,400 | $0.00 | - | |
| Edward Morrow Atkinson III | Derivative | Stock Option (Right to Buy) | 45,150 | $0.00 | - | |
| Edward Morrow Atkinson III | Derivative | Stock Option (Right to Buy) | 56,400 | $0.00 | - | |
| Quoc Le-Nguyen - Officer | Other | Common Stock | 13,694 footnote F2,F3 | - footnote F2,F3 | - | |
| Quoc Le-Nguyen - Officer | Derivative | Stock Option (Right to Buy) | 4,063 | $0.00 | - | |
| Quoc Le-Nguyen - Officer | Derivative | Stock Option (Right to Buy) | 3,312 | $0.00 | - | |
| Quoc Le-Nguyen - Officer | Derivative | Stock Option (Right to Buy) | 50,000 | $0.00 | - | |
| Quoc Le-Nguyen - Officer | Derivative | Stock Option (Right to Buy) | 67,500 | $0.00 | - | |
| Quoc Le-Nguyen - Officer | Derivative | Stock Option (Right to Buy) | 70,000 | $0.00 | - | |
| Quoc Le-Nguyen - Officer | Derivative | Stock Option (Right to Buy) | 120,000 | $0.00 | - | |
| Quoc Le-Nguyen - Officer | Derivative | Stock Option (Right to Buy) | 195,000 | $0.00 | - | |
| Quoc Le-Nguyen - Officer | Derivative | Stock Option (Right to Buy) | 320,000 | $0.00 | - | |
| Quoc Le-Nguyen - Officer | Derivative | Stock Option (Right to Buy) | 26,400 | $0.00 | - | |
| Quoc Le-Nguyen - Officer | Derivative | Stock Option (Right to Buy) | 17,500 | $0.00 | - | |
| Quoc Le-Nguyen - Officer | Grant or award | Common Stock | 50,000 footnote F1 | $0.00 | - | |
| Quoc Le-Nguyen - Officer | Other | Common Stock | 351,684 footnote F2,F3 | - footnote F2,F3 | - | |
| ||||||
| Derek Dirocco | Derivative | Stock Option (Right to Buy) | 7,000 | $0.00 | - | |
| Derek Dirocco | Derivative | Stock Option (Right to Buy) | 7,000 | $0.00 | - | |
| Derek Dirocco | Derivative | Stock Option (Right to Buy) | 12,500 | $0.00 | - | |
| Derek Dirocco | Derivative | Stock Option (Right to Buy) | 25,000 | $0.00 | - | |
| Derek Dirocco | Derivative | Stock Option (Right to Buy) | 27,400 | $0.00 | - | |
| Derek Dirocco | Derivative | Stock Option (Right to Buy) | 45,150 | $0.00 | - | |
| Derek Dirocco | Derivative | Stock Option (Right to Buy) | 56,400 | $0.00 | - | |
| Charles McWherter | Other | Common Stock | 25,000 footnote F1,F2 | - footnote F1,F2 | - | |
| Charles McWherter | Derivative | Stock Option (Right to Buy) | 67,700 | $0.00 | - | |
| Charles McWherter | Derivative | Stock Option (Right to Buy) | 56,400 | $0.00 | - | |
| ||||||
| Steven Altschuler | Derivative | Stock Option (Right to Buy) | 12,500 | $0.00 | - | |
| Steven Altschuler | Derivative | Stock Option (Right to Buy) | 25,000 | $0.00 | - | |
| Steven Altschuler | Derivative | Stock Option (Right to Buy) | 27,400 | $0.00 | - | |
| Steven Altschuler | Derivative | Stock Option (Right to Buy) | 45,150 | $0.00 | - | |
| Steven Altschuler | Derivative | Stock Option (Right to Buy) | 56,400 | $0.00 | - | |
| Steven Altschuler | Derivative | Stock Option (Right to Buy) | 40,000 | $0.00 | - | |
| Steven Altschuler | Derivative | Stock Option (Right to Buy) | 7,000 | $0.00 | - | |
| Martin Babler | Derivative | Stock Option (Right to Buy) | 67,700 | $0.00 | - | |
| Martin Babler | Derivative | Stock Option (Right to Buy) | 56,400 | $0.00 | - | |
| Francis Willard Sarena - Officer | Other | Common Stock | 75,310 footnote F1,F2,F3 | - footnote F2,F3 | - | |
| Francis Willard Sarena - Officer | Derivative | Stock Option (Right to Buy) | 350,000 | $0.00 | - | |
| Francis Willard Sarena - Officer | Derivative | Stock Option (Right to Buy) | 215,000 | $0.00 | - | |
| ||||||
| Rohan Palekar - Officer | Other | Common Stock | 934,273 footnote F3,F4 | - footnote F3,F4 | - | |
| Rohan Palekar - Officer | Derivative | Stock Option (Right to Buy) | 120,231 | $0.00 | - | |
| Rohan Palekar - Officer | Derivative | Stock Option (Right to Buy) | 132,242 | $0.00 | - | |
| Rohan Palekar - Officer | Derivative | Stock Option (Right to Buy) | 170,000 | $0.00 | - | |
| Rohan Palekar - Officer | Derivative | Stock Option (Right to Buy) | 203,750 | $0.00 | - | |
| Rohan Palekar - Officer | Derivative | Stock Option (Right to Buy) | 220,000 | $0.00 | - | |
| Rohan Palekar - Officer | Derivative | Stock Option (Right to Buy) | 300,000 | $0.00 | - | |
| Rohan Palekar - Officer | Derivative | Stock Option (Right to Buy) | 605,000 | $0.00 | - | |
| Rohan Palekar - Officer | Derivative | Stock Option (Right to Buy) | 848,000 | $0.00 | - | |
| Rohan Palekar - Officer | Grant or award | Common Stock | 125,000 footnote F1 | $0.00 | - | |
| ||||||
 Michael R. Hayden | Other | Common Stock | 103,978 footnote F1,F2 | - footnote F1,F2 | - | |
| Michael R. Hayden | Other | Common Stock | 61,538 footnote F1,F2 | - footnote F1,F2 | - | |
| Michael R. Hayden | Derivative | Stock Option (Right to Buy) | 27,647 | $0.00 | - | |
| Michael R. Hayden | Derivative | Stock Option (Right to Buy) | 2,933 | $0.00 | - | |
| Michael R. Hayden | Derivative | Stock Option (Right to Buy) | 22,730 | $0.00 | - | |
| Michael R. Hayden | Derivative | Stock Option (Right to Buy) | 7,000 | $0.00 | - | |
| Michael R. Hayden | Derivative | Stock Option (Right to Buy) | 7,000 | $0.00 | - | |
| Michael R. Hayden | Derivative | Stock Option (Right to Buy) | 12,500 | $0.00 | - | |
| Michael R. Hayden | Derivative | Stock Option (Right to Buy) | 25,000 | $0.00 | - | |
| Michael R. Hayden | Derivative | Stock Option (Right to Buy) | 27,400 | $0.00 | - | |
| Michael R. Hayden | Derivative | Stock Option (Right to Buy) | 45,150 | $0.00 | - | |
| Michael R. Hayden | Derivative | Stock Option (Right to Buy) | 56,400 | $0.00 | - | |
| Michael R. Hayden | Other | Common Stock | 80,904 footnote F1,F2 | - footnote F1,F2 | - | |
| ||||||
 Harry H. Mansbach - Officer | Derivative | Stock Option (Right to Buy) | 120,000 | $0.00 | - | |
| Harry H. Mansbach - Officer | Derivative | Stock Option (Right to Buy) | 195,000 | $0.00 | - | |
| Harry H. Mansbach - Officer | Derivative | Stock Option (Right to Buy) | 320,000 | $0.00 | - | |
| Harry H. Mansbach - Officer | Grant or award | Common Stock | 50,000 footnote F1 | $0.00 | - | |
| Harry H. Mansbach - Officer | Other | Common Stock | 352,656 footnote F2,F3 | - footnote F2,F3 | - | |
| Harry H. Mansbach - Officer | Derivative | Stock Option (Right to Buy) | 98,204 | $0.00 | - | |
| Harry H. Mansbach - Officer | Derivative | Stock Option (Right to Buy) | 39,037 | $0.00 | - | |
| Harry H. Mansbach - Officer | Derivative | Stock Option (Right to Buy) | 45,000 | $0.00 | - | |
| Harry H. Mansbach - Officer | Derivative | Stock Option (Right to Buy) | 67,500 | $0.00 | - | |
| Harry H. Mansbach - Officer | Derivative | Stock Option (Right to Buy) | 70,000 | $0.00 | - | |
| ||||||
| Lota S. Zoth | Derivative | Stock Option (Right to Buy) | 12,500 | $0.00 | - | |
| Lota S. Zoth | Derivative | Stock Option (Right to Buy) | 25,000 | $0.00 | - | |
| Lota S. Zoth | Derivative | Stock Option (Right to Buy) | 27,400 | $0.00 | - | |
| Lota S. Zoth | Derivative | Stock Option (Right to Buy) | 45,150 | $0.00 | - | |
| Lota S. Zoth | Derivative | Stock Option (Right to Buy) | 56,400 | $0.00 | - | |
| Lota S. Zoth | Derivative | Stock Option (Right to Buy) | 20,000 | $0.00 | - | |
| Kathleen Laporte | Derivative | Stock Option (Right to Buy) | 12,500 | $0.00 | - | |
| Kathleen Laporte | Derivative | Stock Option (Right to Buy) | 27,400 | $0.00 | - | |
| Kathleen Laporte | Derivative | Stock Option (Right to Buy) | 45,150 | $0.00 | - | |
| Kathleen Laporte | Derivative | Stock Option (Right to Buy) | 56,400 | $0.00 | - | |
| Kathleen Laporte | Derivative | Stock Option (Right to Buy) | 25,000 | $0.00 | - | |
| Ryan Martins - Officer | Option exercise | Common Stock | 76,901 | $3.11 | $239K | |
| Ryan Martins - Officer | Option exercise | Stock Option (Right to Buy) | 76,901 | $0.00 | - | |
| Ryan Martins - Officer | Option exercise | Stock Option (Right to Buy) | 3,898 | $0.00 | - | |
| Ryan Martins - Officer | Option exercise | Common Stock | 3,898 | $4.44 | $17K | |
| Francis Willard Sarena - Officer | Tax withholding / forfeiture | Common Stock | 3,206 | $9.16 | $29K | |
| Francis Willard Sarena - Officer | Tax withholding / forfeiture | Common Stock | 2,979 | $9.69 | $29K | |
| Quoc Le-Nguyen - Officer | Tax withholding / forfeiture | Common Stock | 7,680 | $9.16 | $70K | |
| Quoc Le-Nguyen - Officer | Tax withholding / forfeiture | Common Stock | 522 | $9.16 | $5K | |
| Ryan Martins - Officer | Tax withholding / forfeiture | Common Stock | 7,680 | $9.16 | $70K | |
| Rohan Palekar - Officer | Tax withholding / forfeiture | Common Stock | 55,836 | $9.16 | $511K | |
| Harry H. Mansbach - Officer | Tax withholding / forfeiture | Common Stock | 7,680 | $9.16 | $70K | |
| Quoc Le-Nguyen - Officer | Open-market sale | Common Stock | 10,461 | $11.02 | $115K | |
| Harry H. Mansbach - Officer | Tax withholding / forfeiture | Common Stock | 8,498 | $9.62 | $82K | |
| Quoc Le-Nguyen - Officer | Grant or award | Common Stock | 95,000 | $0.00 | - | |
| Ryan Martins - Officer | Grant or award | Common Stock | 95,000 | $0.00 | - | |
| Harry H. Mansbach - Officer | Grant or award | Common Stock | 95,000 | $0.00 | - | |
| Rohan Palekar - Officer | Open-market purchase | Common Stock | 5,000 | $7.89 | $39K | |
| Charles McWherter | Open-market purchase | Common Stock | 10,000 | $8.00 | $80K | |
| Rohan Palekar - Officer | Open-market purchase | Common Stock | 10,000 | $8.35 | $84K | |
| RA CAPITAL MANAGEMENT, L.P. | Open-market purchase | Pre-Funded Warrants (Right to Buy) | 3,250,000 | $8.50 | $27.62M | |
| Quoc Le-Nguyen - Officer | Open-market sale | Common Stock | 27,955 | $8.12 | $227K | |
ETNB insider trading FAQ
What is the latest insider trade for ETNB?
89bio, Inc. (ETNB) has filed no insider reports in the last 90 days. The most recent on record is dated 2025-11-03. The full record for ETNB runs to 30 Form 4 filings, the earliest from 2024-11-01. InsiderAlpha adds new Form 4, Form 144 and 8-K filings as they arrive from SEC EDGAR.
How many insiders are buying ETNB stock?
No insider purchases of ETNB were filed in the last 90 days. 4 purchases are on record for this company.
How many insiders are selling ETNB stock?
No insider sales of ETNB were filed in the last 90 days. 2 sales are on record for this company.
Where can I see ETNB SEC filings (Form 4, 10-K, 10-Q, 8-K)?
This page collects ETNB Form 4 insider transactions, Form 144 sale notices and 8-K filings in one place. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
More Health Care companies with insider activity
Recent insider filings
10The EDGAR links open each original Form 4, so you can check any number on this page against the filing it came from.
- - RA CAPITAL MANAGEMENT, L.P. view on EDGAR
- - Ryan Martins view on EDGAR
- - Edward Morrow Atkinson III view on EDGAR
- - Quoc Le-Nguyen view on EDGAR
- - Derek Dirocco view on EDGAR
- - Charles McWherter view on EDGAR
- - Steven Altschuler view on EDGAR
- - Martin Babler view on EDGAR
- - Francis Willard Sarena view on EDGAR
Related companies with recent insider activity
Learn more
- What the Form 4 transaction codes mean
- Grants, option exercises, gifts and tax withholding are not trades on the market. The codes say which is which.
- Insider activity in Health Care
- Where ETNB's peers are being bought and sold.
- Every recent Form 4
- The market-wide feed, updated as filings arrive from SEC EDGAR.
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