ETNB insider transaction filings
89bio, Inc. — 48 most recent Form 4 filings from SEC EDGAR, normalized by FilingPulse. Latest filing: 2025-11-03. Screen ETNB transaction legs live →
| Filed | Form | Insider | Reported transactions | Source |
|---|---|---|---|---|
| 2025-11-03 | 4 | RA CAPITAL MANAGEMENT, L.P. — Director, 10% owner RA Capital Healthcare Fund LP — Director, 10% owner RA Capital Nexus Fund, L.P. — Director, 10% owner Kolchinsky Peter — Director, 10% owner Shah Rajeev M. — Director, 10% owner | Disposition to issuer (D): 19,554,319 · Disposition to issuer (D): 335,364 · Disposition to issuer (D): 4,331,081 (derivative) @ $0 · Disposition to issuer (D): 7,000 (derivative) @ $0 · Disposition to issuer (D): 7,000 (derivative) @ $0 · Disposition to issuer (D): 12,500 (derivative) @ $0 · +4 more | EDGAR |
| 2025-10-30 | 4 | Martins Ryan — Chief Financial Officer | Grant/award (A): 35,000 @ $0 · Code (U): 374,295 · Disposition to issuer (D): 47,500 (derivative) @ $0 · Disposition to issuer (D): 57,500 (derivative) @ $0 · Disposition to issuer (D): 48,102 (derivative) @ $0 · Disposition to issuer (D): 110,000 (derivative) @ $0 · +2 more | EDGAR |
| 2025-10-30 | 4 | Atkinson Edward Morrow III — Director | Disposition to issuer (D): 20,000 (derivative) @ $0 · Disposition to issuer (D): 27,400 (derivative) @ $0 · Disposition to issuer (D): 45,150 (derivative) @ $0 · Disposition to issuer (D): 56,400 (derivative) @ $0 | EDGAR |
| 2025-10-30 | 4 | Le-Nguyen Quoc — See Remarks | Grant/award (A): 50,000 @ $0 · Code (U): 351,684 · Code (U): 13,694 · Disposition to issuer (D): 4,063 (derivative) @ $0 · Disposition to issuer (D): 3,312 (derivative) @ $0 · Disposition to issuer (D): 50,000 (derivative) @ $0 · +7 more | EDGAR |
| 2025-10-30 | 4 | DiRocco Derek — Director | Disposition to issuer (D): 7,000 (derivative) @ $0 · Disposition to issuer (D): 7,000 (derivative) @ $0 · Disposition to issuer (D): 12,500 (derivative) @ $0 · Disposition to issuer (D): 25,000 (derivative) @ $0 · Disposition to issuer (D): 27,400 (derivative) @ $0 · Disposition to issuer (D): 45,150 (derivative) @ $0 · +1 more | EDGAR |
| 2025-10-30 | 4 | McWherter Charles — Director | Code (U): 25,000 · Disposition to issuer (D): 67,700 (derivative) @ $0 · Disposition to issuer (D): 56,400 (derivative) @ $0 | EDGAR |
| 2025-10-30 | 4 | Altschuler Steven — Director | Disposition to issuer (D): 40,000 (derivative) @ $0 · Disposition to issuer (D): 7,000 (derivative) @ $0 · Disposition to issuer (D): 12,500 (derivative) @ $0 · Disposition to issuer (D): 25,000 (derivative) @ $0 · Disposition to issuer (D): 27,400 (derivative) @ $0 · Disposition to issuer (D): 45,150 (derivative) @ $0 · +1 more | EDGAR |
| 2025-10-30 | 4 | Babler Martin — Director | Disposition to issuer (D): 67,700 (derivative) @ $0 · Disposition to issuer (D): 56,400 (derivative) @ $0 | EDGAR |
| 2025-10-30 | 4 | Sarena Francis Willard — Chief Operating Officer | Code (U): 75,310 · Disposition to issuer (D): 350,000 (derivative) @ $0 · Disposition to issuer (D): 215,000 (derivative) @ $0 | EDGAR |
| 2025-10-30 | 4 | PALEKAR ROHAN — Chief Executive Officer, Director | Grant/award (A): 125,000 @ $0 · Code (U): 934,273 · Disposition to issuer (D): 120,231 (derivative) @ $0 · Disposition to issuer (D): 132,242 (derivative) @ $0 · Disposition to issuer (D): 170,000 (derivative) @ $0 · Disposition to issuer (D): 203,750 (derivative) @ $0 · +4 more | EDGAR |
| 2025-10-30 | 4 | Hayden Michael R — Director | Code (U): 80,904 · Code (U): 103,978 · Code (U): 61,538 · Disposition to issuer (D): 27,647 (derivative) @ $0 · Disposition to issuer (D): 2,933 (derivative) @ $0 · Disposition to issuer (D): 22,730 (derivative) @ $0 · +7 more | EDGAR |
| 2025-10-30 | 4 | Mansbach Harry H — Chief Medical Officer | Grant/award (A): 50,000 @ $0 · Code (U): 352,656 · Disposition to issuer (D): 98,204 (derivative) @ $0 · Disposition to issuer (D): 39,037 (derivative) @ $0 · Disposition to issuer (D): 45,000 (derivative) @ $0 · Disposition to issuer (D): 67,500 (derivative) @ $0 · +4 more | EDGAR |
| 2025-10-30 | 4 | Zoth Lota S. — Director | Disposition to issuer (D): 20,000 (derivative) @ $0 · Disposition to issuer (D): 12,500 (derivative) @ $0 · Disposition to issuer (D): 25,000 (derivative) @ $0 · Disposition to issuer (D): 27,400 (derivative) @ $0 · Disposition to issuer (D): 45,150 (derivative) @ $0 · Disposition to issuer (D): 56,400 (derivative) @ $0 | EDGAR |
| 2025-10-30 | 4 | LAPORTE KATHLEEN — Director | Disposition to issuer (D): 25,000 (derivative) @ $0 · Disposition to issuer (D): 12,500 (derivative) @ $0 · Disposition to issuer (D): 27,400 (derivative) @ $0 · Disposition to issuer (D): 45,150 (derivative) @ $0 · Disposition to issuer (D): 56,400 (derivative) @ $0 | EDGAR |
| 2025-10-23 | 4 | Martins Ryan — Chief Financial Officer | Option exercise (M): 76,901 @ $3.11 · Option exercise (M): 3,898 @ $4.44 · Option exercise (M): 76,901 (derivative) @ $0 · Option exercise (M): 3,898 (derivative) @ $0 | EDGAR |
| 2025-08-05 | 4 | Le-Nguyen Quoc — See Remarks | Tax withholding (F): 7,680 @ $9.16 · Tax withholding (F): 522 @ $9.16 | EDGAR |
| 2025-08-05 | 4 | Martins Ryan — Chief Financial Officer | Tax withholding (F): 7,680 @ $9.16 | EDGAR |
| 2025-08-05 | 4 | Sarena Francis Willard — Chief Operating Officer | Tax withholding (F): 3,206 @ $9.16 · Tax withholding (F): 2,979 @ $9.69 | EDGAR |
| 2025-08-05 | 4 | PALEKAR ROHAN — Chief Executive Officer, Director | Tax withholding (F): 55,836 @ $9.16 | EDGAR |
| 2025-08-05 | 4 | Mansbach Harry H — Chief Medical Officer | Tax withholding (F): 7,680 @ $9.16 | EDGAR |
| 2025-07-17 | 4 | Le-Nguyen Quoc — See Remarks | Sale (S): 10,461 @ $11.02 | EDGAR |
| 2025-06-13 | 4 | Martins Ryan — Chief Financial Officer | Tax withholding (F): 8,498 @ $9.62 | EDGAR |
| 2025-06-13 | 4 | Le-Nguyen Quoc — See Remarks | Tax withholding (F): 8,498 @ $9.62 · Tax withholding (F): 534 @ $9.62 | EDGAR |
| 2025-06-13 | 4 | Mansbach Harry H — Chief Medical Officer | Tax withholding (F): 8,498 @ $9.62 | EDGAR |
| 2025-04-17 | 4 | Le-Nguyen Quoc — See Remarks | Sale (S): 15,329 @ $5.95 | EDGAR |
| 2025-02-19 | 4 | Le-Nguyen Quoc — See Remarks | Grant/award (A): 6,000 @ $0 · Grant/award (A): 8,750 @ $9.60 · Tax withholding (F): 1,050 @ $10.57 · Grant/award (A): 26,400 (derivative) @ $0 · Grant/award (A): 17,500 (derivative) @ $0 | EDGAR |
| 2025-02-19 | 4 | Martins Ryan — Chief Financial Officer | Tax withholding (F): 780 @ $10.57 | EDGAR |
| 2025-02-19 | 4 | PALEKAR ROHAN — Chief Executive Officer, Director | Tax withholding (F): 3,249 @ $10.57 | EDGAR |
| 2025-02-19 | 4 | Mansbach Harry H — Chief Medical Officer | Tax withholding (F): 1,050 @ $10.57 | EDGAR |
| 2025-02-11 | 4 | Martins Ryan — Chief Financial Officer | Tax withholding (F): 3,828 @ $11.41 | EDGAR |
| 2025-02-11 | 4 | Le-Nguyen Quoc — See Remarks | Tax withholding (F): 3,793 @ $11.41 | EDGAR |
| 2025-02-11 | 4 | PALEKAR ROHAN — Chief Executive Officer, Director | Tax withholding (F): 8,946 @ $11.41 | EDGAR |
| 2025-02-11 | 4 | Mansbach Harry H — Chief Medical Officer | Tax withholding (F): 3,817 @ $11.41 | EDGAR |
| 2025-02-05 | 4 | Atkinson Edward Morrow III — Director | Grant/award (A): 56,400 (derivative) @ $0 | EDGAR |
| 2025-02-05 | 4 | DiRocco Derek — Director | Grant/award (A): 56,400 (derivative) @ $0 | EDGAR |
| 2025-02-05 | 4 | McWherter Charles — Director | Grant/award (A): 56,400 (derivative) @ $0 | EDGAR |
| 2025-02-05 | 4 | Altschuler Steven — Director | Grant/award (A): 56,400 (derivative) @ $0 | EDGAR |
| 2025-02-05 | 4 | Babler Martin — Director | Grant/award (A): 56,400 (derivative) @ $0 | EDGAR |
| 2025-02-05 | 4 | Hayden Michael R — Director | Grant/award (A): 56,400 (derivative) @ $0 | EDGAR |
| 2025-02-05 | 4 | RA CAPITAL MANAGEMENT, L.P. — Director, 10% owner RA Capital Healthcare Fund LP — Director, 10% owner RA Capital Nexus Fund, L.P. — Director, 10% owner Kolchinsky Peter — Director, 10% owner Shah Rajeev M. — Director, 10% owner | Grant/award (A): 56,400 (derivative) @ $0 | EDGAR |
| 2025-02-05 | 4 | Zoth Lota S. — Director | Grant/award (A): 56,400 (derivative) @ $0 | EDGAR |
| 2025-02-05 | 4 | LAPORTE KATHLEEN — Director | Grant/award (A): 56,400 (derivative) @ $0 | EDGAR |
| 2025-02-04 | 4 | Martins Ryan — Chief Financial Officer | Grant/award (A): 80,000 @ $0 · Tax withholding (F): 3,338 @ $9.60 · Grant/award (A): 300,000 (derivative) @ $0 | EDGAR |
| 2025-02-04 | 4 | Le-Nguyen Quoc — See Remarks | Grant/award (A): 80,000 @ $0 · Tax withholding (F): 3,338 @ $9.60 · Grant/award (A): 320,000 (derivative) @ $0 | EDGAR |
| 2025-02-04 | 4 | Sarena Francis Willard — Chief Operating Officer | Grant/award (A): 53,750 @ $0 · Grant/award (A): 215,000 (derivative) @ $0 | EDGAR |
| 2025-02-04 | 4 | PALEKAR ROHAN — Chief Executive Officer, Director | Grant/award (A): 212,000 @ $0 · Grant/award (A): 200,000 @ $0 · Tax withholding (F): 9,598 @ $9.60 · Grant/award (A): 848,000 (derivative) @ $0 | EDGAR |
| 2025-02-04 | 4 | Mansbach Harry H — Chief Medical Officer | Grant/award (A): 80,000 @ $0 · Tax withholding (F): 3,338 @ $9.60 · Grant/award (A): 320,000 (derivative) @ $0 | EDGAR |
| 2025-02-03 | 4 | RA CAPITAL MANAGEMENT, L.P. — Director, 10% owner RA Capital Healthcare Fund LP — Director, 10% owner RA Capital Nexus Fund, L.P. — Director, 10% owner Kolchinsky Peter — Director, 10% owner Shah Rajeev M. — Director, 10% owner | Purchase (P): 5,714,285 @ $8.75 | EDGAR |
Recent 8-K events — 89bio, Inc.
| Filed | Form | Items reported | Source |
|---|---|---|---|
| 2025-10-30 | 8-K | 1.02 — Termination of a Material Definitive Agreement 2.01 — Completion of Acquisition or Disposition of Assets 3.01 — Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing 3.03 — Material Modification to Rights of Security Holders 5.01 — Changes in Control of Registrant 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers 5.03 — Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year 9.01 — Financial Statements and Exhibits | EDGAR |
| 2025-09-18 | 8-K | 1.01 — Entry into a Material Definitive Agreement 8.01 — Other Events 9.01 — Financial Statements and Exhibits | EDGAR |
| 2025-08-07 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2025-05-30 | 8-K | 5.07 — Submission of Matters to a Vote of Security Holders | EDGAR |
| 2025-05-01 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2025-04-09 | 8-K | 7.01 — Regulation FD Disclosure 9.01 — Financial Statements and Exhibits | EDGAR |
| 2025-02-27 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2025-02-04 | 8-K | 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers | EDGAR |
| 2025-01-29 | 8-K | 1.01 — Entry into a Material Definitive Agreement 9.01 — Financial Statements and Exhibits | EDGAR |
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