Skip to main content
Signal8

Martins Ryan

SEC insider (Form 3/4/5 filer). CIK 0001792018. Chief Financial Officer at 89bio, Inc. (ETNB). 18 reported Form 4/5 transactions since Sep 2024; latest on Oct 30, 2025. Located in SAN FRANCISCO, CA.

Companies Martins Ryan has filed insider reports for

  • 89bio, Inc. (ETNB): Officer, Chief Financial Officer
Martins Ryan profile photo

Martins Ryan

CIK: 0001792018

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)0 (0.0%)

Position reduction

Option Exercises (M)2 (11.1%)

Derivative conversions

Awards (A)3 (16.7%)

Compensation grants

Other (G, F, J, C, D, …)13 (72.2%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

89bio, Inc. logo
ETNB

89bio, Inc.

Officer

Discretionary Trading P&L

Holdings

Transaction History (18 total)

  • 89bio, Inc. logo
    ETNB

    89bio, Inc.

    Oct 30, 2025
    Award
    Direct
    35K shares-
  • 89bio, Inc. logo
    ETNB

    89bio, Inc.

    Oct 30, 2025
    Tender Offer
    Direct
    374.3K shares-
  • 89bio, Inc. logo
    ETNB

    89bio, Inc.

    Oct 30, 2025
    Disposition

    Stock Option (Right to Buy)

    Direct
    47.5K shares-
  • 89bio, Inc. logo
    ETNB

    89bio, Inc.

    Oct 30, 2025
    Disposition

    Stock Option (Right to Buy)

    Direct
    57.5K shares-
  • 89bio, Inc. logo
    ETNB

    89bio, Inc.

    Oct 30, 2025
    Disposition

    Stock Option (Right to Buy)

    Direct
    48.1K shares-
  • 89bio, Inc. logo
    ETNB

    89bio, Inc.

    Oct 30, 2025
    Disposition

    Stock Option (Right to Buy)

    Direct
    110K shares-
  • 89bio, Inc. logo
    ETNB

    89bio, Inc.

    Oct 30, 2025
    Disposition

    Stock Option (Right to Buy)

    Direct
    175K shares-
  • 89bio, Inc. logo
    ETNB

    89bio, Inc.

    Oct 30, 2025
    Disposition

    Stock Option (Right to Buy)

    Direct
    300K shares-
  • 89bio, Inc. logo
    ETNB

    89bio, Inc.

    Oct 22, 2025
    Exercise
    Direct
    3.9K shares at avg. $4.44$17K
  • 89bio, Inc. logo
    ETNB

    89bio, Inc.

    Oct 22, 2025
    Exercise
    Direct
    76.9K shares at avg. $3.11$239K

1-10 of 18